platform/kernel/linux-rpi.git
3 years agoscsi: ufs: handle cleanup correctly on devm_reset_control_get error
Phillip Potter [Mon, 3 May 2021 11:56:58 +0000 (13:56 +0200)]
scsi: ufs: handle cleanup correctly on devm_reset_control_get error

Move ufshcd_set_variant call in ufs_hisi_init_common to common error
section at end of the function, and then jump to this from the error
checking statements for both devm_reset_control_get and
ufs_hisi_get_resource. This fixes the original commit (63a06181d7ce)
which was reverted due to the University of Minnesota problems.

Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210503115736.2104747-32-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "scsi: ufs: fix a missing check of devm_reset_control_get"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:57 +0000 (13:56 +0200)]
Revert "scsi: ufs: fix a missing check of devm_reset_control_get"

This reverts commit 63a06181d7ce169d09843645c50fea1901bc9f0a.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

The original commit is incorrect, it does not properly clean up on the
error path, so I'll keep the revert and fix it up properly with a
follow-on patch.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Fixes: 63a06181d7ce ("scsi: ufs: fix a missing check of devm_reset_control_get")
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-31-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agochar: hpet: add checks after calling ioremap
Tom Seewald [Mon, 3 May 2021 11:56:56 +0000 (13:56 +0200)]
char: hpet: add checks after calling ioremap

The function hpet_resources() calls ioremap() two times, but in both
cases it does not check if ioremap() returned a null pointer. Fix this
by adding null pointer checks and returning an appropriate error.

Signed-off-by: Tom Seewald <tseewald@gmail.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-30-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "char: hpet: fix a missing check of ioremap"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:55 +0000 (13:56 +0200)]
Revert "char: hpet: fix a missing check of ioremap"

This reverts commit 13bd14a41ce3105d5b1f3cd8b4d1e249d17b6d9b.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

While this is technically correct, it is only fixing ONE of these errors
in this function, so the patch is not fully correct.  I'll leave this
revert and provide a fix for this later that resolves this same
"problem" everywhere in this function.

Cc: Kangjie Lu <kjlu@umn.edu>
Link: https://lore.kernel.org/r/20210503115736.2104747-29-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agocdrom: gdrom: deallocate struct gdrom_unit fields in remove_gdrom
Atul Gopinathan [Mon, 3 May 2021 11:56:54 +0000 (13:56 +0200)]
cdrom: gdrom: deallocate struct gdrom_unit fields in remove_gdrom

The fields, "toc" and "cd_info", of "struct gdrom_unit gd" are allocated
in "probe_gdrom()". Prevent a memory leak by making sure "gd.cd_info" is
deallocated in the "remove_gdrom()" function.

Also prevent double free of the field "gd.toc" by moving it from the
module's exit function to "remove_gdrom()". This is because, in
"probe_gdrom()", the function makes sure to deallocate "gd.toc" in case
of any errors, so the exit function invoked later would again free
"gd.toc".

The patch also maintains consistency by deallocating the above mentioned
fields in "remove_gdrom()" along with another memory allocated field
"gd.disk".

Suggested-by: Jens Axboe <axboe@kernel.dk>
Cc: Peter Rosin <peda@axentia.se>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Atul Gopinathan <atulgopinathan@gmail.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-28-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "gdrom: fix a memory leak bug"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:53 +0000 (13:56 +0200)]
Revert "gdrom: fix a memory leak bug"

This reverts commit 093c48213ee37c3c3ff1cf5ac1aa2a9d8bc66017.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

Because of this, all submissions from this group must be reverted from
the kernel tree and will need to be re-reviewed again to determine if
they actually are a valid fix.  Until that work is complete, remove this
change to ensure that no problems are being introduced into the
codebase.

Cc: Wenwen Wang <wang6495@umn.edu>
Cc: Peter Rosin <peda@axentia.se>
Cc: Jens Axboe <axboe@kernel.dk>
Fixes: 093c48213ee3 ("gdrom: fix a memory leak bug")
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-27-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoqlcnic: Add null check after calling netdev_alloc_skb
Tom Seewald [Mon, 3 May 2021 11:56:52 +0000 (13:56 +0200)]
qlcnic: Add null check after calling netdev_alloc_skb

The function qlcnic_dl_lb_test() currently calls netdev_alloc_skb()
without checking afterwards that the allocation succeeded. Fix this by
checking if the skb is NULL and returning an error in such a case.
Breaking out of the loop if the skb is NULL is not correct as no error
would be reported to the caller and no message would be printed for the
user.

Cc: David S. Miller <davem@davemloft.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Tom Seewald <tseewald@gmail.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-26-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "qlcnic: Avoid potential NULL pointer dereference"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:51 +0000 (13:56 +0200)]
Revert "qlcnic: Avoid potential NULL pointer dereference"

This reverts commit 5bf7295fe34a5251b1d241b9736af4697b590670.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

This commit does not properly detect if an error happens because the
logic after this loop will not detect that there was a failed
allocation.

Cc: Aditya Pakki <pakki001@umn.edu>
Cc: David S. Miller <davem@davemloft.net>
Fixes: 5bf7295fe34a ("qlcnic: Avoid potential NULL pointer dereference")
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-25-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoethernet: sun: niu: fix missing checks of niu_pci_eeprom_read()
Du Cheng [Mon, 3 May 2021 11:56:50 +0000 (13:56 +0200)]
ethernet: sun: niu: fix missing checks of niu_pci_eeprom_read()

niu_pci_eeprom_read() may fail, so add checks to its return value and
propagate the error up the callstack.

An examination of the callstack up to niu_pci_eeprom_read shows that:

niu_pci_eeprom_read() // returns int
    niu_pci_vpd_scan_props() // returns int
        niu_pci_vpd_fetch() // returns *void*
            niu_get_invariants() // returns int

since niu_pci_vpd_fetch() returns void which breaks the bubbling up,
change its return type to int so that error is propagated upwards.

Signed-off-by: Du Cheng <ducheng2@gmail.com>
Cc: Shannon Nelson <shannon.lee.nelson@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-24-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "niu: fix missing checks of niu_pci_eeprom_read"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:49 +0000 (13:56 +0200)]
Revert "niu: fix missing checks of niu_pci_eeprom_read"

This reverts commit 26fd962bde0b15e54234fe762d86bc0349df1de4.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

The change here was incorrect.  While it is nice to check if
niu_pci_eeprom_read() succeeded or not when using the data, any error
that might have happened was not propagated upwards properly, causing
the kernel to assume that these reads were successful, which results in
invalid data in the buffer that was to contain the successfully read
data.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Shannon Nelson <shannon.lee.nelson@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Fixes: 26fd962bde0b ("niu: fix missing checks of niu_pci_eeprom_read")
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-23-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agonet: stmicro: handle clk_prepare() failure during init
Anirudh Rayabharam [Mon, 3 May 2021 11:56:48 +0000 (13:56 +0200)]
net: stmicro: handle clk_prepare() failure during init

In case clk_prepare() fails, capture and propagate the error code up the
stack. If regulator_enable() was called earlier, properly unwind it by
calling regulator_disable().

Signed-off-by: Anirudh Rayabharam <mail@anirudhrb.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-22-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "net: stmicro: fix a missing check of clk_prepare"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:47 +0000 (13:56 +0200)]
Revert "net: stmicro: fix a missing check of clk_prepare"

This reverts commit f86a3b83833e7cfe558ca4d70b64ebc48903efec.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

The original commit causes a memory leak when it is trying to claim it
is properly handling errors.  Revert this change and fix it up properly
in a follow-on commit.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: David S. Miller <davem@davemloft.net>
Fixes: f86a3b83833e ("net: stmicro: fix a missing check of clk_prepare")
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-21-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agonet: caif: remove BUG_ON(dev == NULL) in caif_xmit
Du Cheng [Mon, 3 May 2021 11:56:46 +0000 (13:56 +0200)]
net: caif: remove BUG_ON(dev == NULL) in caif_xmit

The condition of dev == NULL is impossible in caif_xmit(), hence it is
for the removal.

Explanation:
The static caif_xmit() is only called upon via a function pointer
`ndo_start_xmit` defined in include/linux/netdevice.h:
```
struct net_device_ops {
    ...
    netdev_tx_t     (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev);
    ...
}
```

The exhausive list of call points are:
```
drivers/net/ethernet/qualcomm/rmnet/rmnet_map_command.c
    dev->netdev_ops->ndo_start_xmit(skb, dev);
    ^                                    ^

drivers/infiniband/ulp/opa_vnic/opa_vnic_netdev.c
    struct opa_vnic_adapter *adapter = opa_vnic_priv(netdev);
     ^                       ^
    return adapter->rn_ops->ndo_start_xmit(skb, netdev); // adapter would crash first
   ^                                    ^

drivers/usb/gadget/function/f_ncm.c
    ncm->netdev->netdev_ops->ndo_start_xmit(NULL, ncm->netdev);
      ^                                   ^

include/linux/netdevice.h
static inline netdev_tx_t __netdev_start_xmit(...
{
    return ops->ndo_start_xmit(skb, dev);
    ^
}

    const struct net_device_ops *ops = dev->netdev_ops;
       ^
    rc = __netdev_start_xmit(ops, skb, dev, more);
       ^
```

In each of the enumerated scenarios, it is impossible for the NULL-valued dev to
reach the caif_xmit() without crashing the kernel earlier, therefore `BUG_ON(dev ==
NULL)` is rather useless, hence the removal.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Du Cheng <ducheng2@gmail.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-20-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "net: caif: replace BUG_ON with recovery code"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:45 +0000 (13:56 +0200)]
Revert "net: caif: replace BUG_ON with recovery code"

This reverts commit c5dea815834c7d2e9fc633785455bc428b7a1956.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

The original change here was pointless as dev can never be NULL in this
function so the claim in the changelog that this "fixes" anything is
incorrect (also the developer forgot about panic_on_warn).  A follow-up
change will resolve this issue properly.

Cc: Aditya Pakki <pakki001@umn.edu>
Cc: David S. Miller <davem@davemloft.net>
Link: https://lore.kernel.org/r/20210503115736.2104747-19-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agonet/smc: properly handle workqueue allocation failure
Anirudh Rayabharam [Mon, 3 May 2021 11:56:44 +0000 (13:56 +0200)]
net/smc: properly handle workqueue allocation failure

In smcd_alloc_dev(), if alloc_ordered_workqueue() fails, properly catch
it, clean up and return NULL to let the caller know there was a failure.
Move the call to alloc_ordered_workqueue higher in the function in order
to abort earlier without needing to unwind the call to device_initialize().

Cc: Ursula Braun <ubraun@linux.ibm.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Anirudh Rayabharam <mail@anirudhrb.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-18-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "net/smc: fix a NULL pointer dereference"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:43 +0000 (13:56 +0200)]
Revert "net/smc: fix a NULL pointer dereference"

This reverts commit e183d4e414b64711baf7a04e214b61969ca08dfa.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

The original commit causes a memory leak and does not properly fix the
issue it claims to fix.  I will send a follow-on patch to resolve this
properly.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Ursula Braun <ubraun@linux.ibm.com>
Cc: David S. Miller <davem@davemloft.net>
Link: https://lore.kernel.org/r/20210503115736.2104747-17-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agonet: fujitsu: fix potential null-ptr-deref
Anirudh Rayabharam [Mon, 3 May 2021 11:56:42 +0000 (13:56 +0200)]
net: fujitsu: fix potential null-ptr-deref

In fmvj18x_get_hwinfo(), if ioremap fails there will be NULL pointer
deref. To fix this, check the return value of ioremap and return -1
to the caller in case of failure.

Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Anirudh Rayabharam <mail@anirudhrb.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-16-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "net: fujitsu: fix a potential NULL pointer dereference"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:41 +0000 (13:56 +0200)]
Revert "net: fujitsu: fix a potential NULL pointer dereference"

This reverts commit 9f4d6358e11bbc7b839f9419636188e4151fb6e4.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

The original change does not change any behavior as the caller of this
function onlyu checks for "== -1" as an error condition so this error is
not handled properly.  Remove this change and it will be fixed up
properly in a later commit.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: David S. Miller <davem@davemloft.net>
Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Link: https://lore.kernel.org/r/20210503115736.2104747-15-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agonet: rtlwifi: properly check for alloc_workqueue() failure
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:40 +0000 (13:56 +0200)]
net: rtlwifi: properly check for alloc_workqueue() failure

If alloc_workqueue() fails, properly catch this and propagate the error
to the calling functions, so that the devuce initialization will
properly error out.

Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Bryan Brattlof <hello@bryanbrattlof.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-14-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "rtlwifi: fix a potential NULL pointer dereference"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:39 +0000 (13:56 +0200)]
Revert "rtlwifi: fix a potential NULL pointer dereference"

This reverts commit 765976285a8c8db3f0eb7f033829a899d0c2786e.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

This commit is not correct, it should not have used unlikely() and is
not propagating the error properly to the calling function, so it should
be reverted at this point in time.  Also, if the check failed, the
work queue was still assumed to be allocated, so further accesses would
have continued to fail, meaning this patch does nothing to solve the
root issues at all.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: Bryan Brattlof <hello@bryanbrattlof.com>
Fixes: 765976285a8c ("rtlwifi: fix a potential NULL pointer dereference")
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-13-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoserial: max310x: unregister uart driver in case of failure and abort
Atul Gopinathan [Mon, 3 May 2021 11:56:38 +0000 (13:56 +0200)]
serial: max310x: unregister uart driver in case of failure and abort

The macro "spi_register_driver" invokes the function
"__spi_register_driver()" which has a return type of int and can fail,
returning a negative value in such a case. This is currently ignored and
the init() function yields success even if the spi driver failed to
register.

Fix this by collecting the return value of "__spi_register_driver()" and
also unregister the uart driver in case of failure.

Cc: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Atul Gopinathan <atulgopinathan@gmail.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-12-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "serial: max310x: pass return value of spi_register_driver"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:37 +0000 (13:56 +0200)]
Revert "serial: max310x: pass return value of spi_register_driver"

This reverts commit 51f689cc11333944c7a457f25ec75fcb41e99410.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

This change did not properly unwind from the error condition, so it was
not correct.

Cc: Kangjie Lu <kjlu@umn.edu>
Acked-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-11-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoleds: lp5523: check return value of lp5xx_read and jump to cleanup code
Phillip Potter [Mon, 3 May 2021 11:56:36 +0000 (13:56 +0200)]
leds: lp5523: check return value of lp5xx_read and jump to cleanup code

Check return value of lp5xx_read and if non-zero, jump to code at end of
the function, causing lp5523_stop_all_engines to be executed before
returning the error value up the call chain. This fixes the original
commit (248b57015f35) which was reverted due to the University of Minnesota
problems.

Cc: stable <stable@vger.kernel.org>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210503115736.2104747-10-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "leds: lp5523: fix a missing check of return value of lp55xx_read"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:35 +0000 (13:56 +0200)]
Revert "leds: lp5523: fix a missing check of return value of lp55xx_read"

This reverts commit 248b57015f35c94d4eae2fdd8c6febf5cd703900.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It will be fixed up "correctly" in a
later kernel change.

The original commit does not properly unwind if there is an error
condition so it needs to be reverted at this point in time.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Cc: stable <stable@vger.kernel.org>
Fixes: 248b57015f35 ("leds: lp5523: fix a missing check of return value of lp55xx_read")
Link: https://lore.kernel.org/r/20210503115736.2104747-9-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "ALSA: sb: fix a missing check of snd_ctl_add"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:34 +0000 (13:56 +0200)]
Revert "ALSA: sb: fix a missing check of snd_ctl_add"

This reverts commit beae77170c60aa786f3e4599c18ead2854d8694d.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be incorrect for the reasons
below, so it must be reverted.  It is safe to ignore this error as the
mixer element is optional, and the driver is very legacy.

Cc: Aditya Pakki <pakki001@umn.edu>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20210503115736.2104747-8-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "media: usb: gspca: add a missed check for goto_low_power"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:33 +0000 (13:56 +0200)]
Revert "media: usb: gspca: add a missed check for goto_low_power"

This reverts commit 5b711870bec4dc9a6d705d41e127e73944fa3650.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to do does nothing useful as a user
can do nothing with this information and if an error did happen, the
code would continue on as before.  Because of this, just revert it.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-7-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:32 +0000 (13:56 +0200)]
Revert "serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference"

This reverts commit 32f47179833b63de72427131169809065db6745e.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, this commit was found to be not be needed at all as the
change was useless because this function can only be called when
of_match_device matched on something.  So it should be reverted.

Cc: Aditya Pakki <pakki001@umn.edu>
Cc: stable <stable@vger.kernel.org>
Fixes: 32f47179833b ("serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference")
Acked-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20210503115736.2104747-6-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "hwmon: (lm80) fix a missing check of bus read in lm80 probe"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:31 +0000 (13:56 +0200)]
Revert "hwmon: (lm80) fix a missing check of bus read in lm80 probe"

This reverts commit 9aa3aa15f4c2f74f47afd6c5db4b420fadf3f315.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, it was determined that this commit is not needed at all so
just revert it.  Also, the call to lm80_init_client() was not properly
handled, so if error handling is needed in the lm80_probe() function,
then it should be done properly, not half-baked like the commit being
reverted here did.

Cc: Kangjie Lu <kjlu@umn.edu>
Fixes: 9aa3aa15f4c2 ("hwmon: (lm80) fix a missing check of bus read in lm80 probe")
Cc: stable <stable@vger.kernel.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210503115736.2104747-5-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "media: rcar_drif: fix a memory disclosure"
Greg Kroah-Hartman [Mon, 3 May 2021 11:56:30 +0000 (13:56 +0200)]
Revert "media: rcar_drif: fix a memory disclosure"

This reverts commit d39083234c60519724c6ed59509a2129fd2aed41.

Because of recent interactions with developers from @umn.edu, all
commits from them have been recently re-reviewed to ensure if they were
correct or not.

Upon review, it was determined that this commit is not needed at all as
the media core already prevents memory disclosure on this codepath, so
just drop the extra memset happening here.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Fixes: d39083234c60 ("media: rcar_drif: fix a memory disclosure")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-4-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "crypto: cavium/nitrox - add an error message to explain the failure of pci_re...
Greg Kroah-Hartman [Wed, 28 Apr 2021 07:49:31 +0000 (09:49 +0200)]
Revert "crypto: cavium/nitrox - add an error message to explain the failure of pci_request_mem_regions"

This reverts commit 9fcddaf2e28d779cb946d23838ba6d50f299aa80 as it was
submitted under a fake name and we can not knowingly accept anonymous
contributions to the repository.

This commit was part of a submission "test" to the Linux kernel
community by some "researchers" at umn.edu.  As outlined at:
https://www-users.cs.umn.edu/%7Ekjlu/papers/full-disclosure.pdf
it was done so as an attempt to submit a known-buggy patch to see if it
could get by our review.  However, the submission turned out to actually
be correct, and not have a bug in it as the author did not understand
how the PCI driver model works at all, and so the submission was
accepted.

As this change is of useless consequence, there is no loss of
functionality in reverting it.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: linux-crypto@vger.kernel.org
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Email: Herbert Xu <herbert@gondor.apana.org.au>
Link: https://lore.kernel.org/r/YIkTi9a3nnL50wMq@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoics932s401: fix broken handling of errors when word reading fails
Darrick J. Wong [Wed, 28 Apr 2021 22:25:34 +0000 (15:25 -0700)]
ics932s401: fix broken handling of errors when word reading fails

In commit b05ae01fdb89, someone tried to make the driver handle i2c read
errors by simply zeroing out the register contents, but for some reason
left unaltered the code that sets the cached register value the function
call return value.

The original patch was authored by a member of the Underhanded
Mangle-happy Nerds, I'm not terribly surprised.  I don't have the
hardware anymore so I can't test this, but it seems like a pretty
obvious API usage fix to me...

Fixes: b05ae01fdb89 ("misc/ics932s401: Add a missing check to i2c_smbus_read_word_data")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Link: https://lore.kernel.org/r/20210428222534.GJ3122264@magnolia
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoMerge tag 'misc-habanalabs-fixes-2021-05-08' of https://git.kernel.org/pub/scm/linux...
Greg Kroah-Hartman [Mon, 10 May 2021 14:30:03 +0000 (16:30 +0200)]
Merge tag 'misc-habanalabs-fixes-2021-05-08' of https://git./linux/kernel/git/ogabbay/linux into char-misc-linus

Oded writes:

This tag contains the following fixes for 5.13-rc2:

- Expose PLL information per ASIC. This also fixes some casting warnings.
- Skip reading further firmware errors in case PCI link is down.
- Security firmware error should be handled as error and not warning.
- Allow user to ignore firmware errors.
- Fix bug in timeout calculation when waiting for interrupt of CS.
- Fix bug of potential use-after-free.

* tag 'misc-habanalabs-fixes-2021-05-08' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux:
  habanalabs/gaudi: Fix a potential use after free in gaudi_memset_device_memory
  habanalabs: wait for interrupt wrong timeout calculation
  habanalabs: ignore f/w status error
  habanalabs: change error level of security not ready
  habanalabs: skip reading f/w errors on bad status
  habanalabs: expose ASIC specific PLL index

3 years agoLinux 5.13-rc1
Linus Torvalds [Sun, 9 May 2021 21:17:44 +0000 (14:17 -0700)]
Linux 5.13-rc1

3 years agofbmem: fix horribly incorrect placement of __maybe_unused
Linus Torvalds [Sun, 9 May 2021 21:03:33 +0000 (14:03 -0700)]
fbmem: fix horribly incorrect placement of __maybe_unused

Commit b9d79e4ca4ff ("fbmem: Mark proc_fb_seq_ops as __maybe_unused")
places the '__maybe_unused' in an entirely incorrect location between
the "struct" keyword and the structure name.

It's a wonder that gcc accepts that silently, but clang quite reasonably
warns about it:

    drivers/video/fbdev/core/fbmem.c:736:21: warning: attribute declaration must precede definition [-Wignored-attributes]
    static const struct __maybe_unused seq_operations proc_fb_seq_ops = {
                        ^

Fix it.

Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'drm-next-2021-05-10' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Sun, 9 May 2021 20:42:39 +0000 (13:42 -0700)]
Merge tag 'drm-next-2021-05-10' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Bit later than usual, I queued them all up on Friday then promptly
  forgot to write the pull request email. This is mainly amdgpu fixes,
  with some radeon/msm/fbdev and one i915 gvt fix thrown in.

  amdgpu:
   - MPO hang workaround
   - Fix for concurrent VM flushes on vega/navi
   - dcefclk is not adjustable on navi1x and newer
   - MST HPD debugfs fix
   - Suspend/resumes fixes
   - Register VGA clients late in case driver fails to load
   - Fix GEM leak in user framebuffer create
   - Add support for polaris12 with 32 bit memory interface
   - Fix duplicate cursor issue when using overlay
   - Fix corruption with tiled surfaces on VCN3
   - Add BO size and stride check to fix BO size verification

  radeon:
   - Fix off-by-one in power state parsing
   - Fix possible memory leak in power state parsing

  msm:
   - NULL ptr dereference fix

  fbdev:
   - procfs disabled warning fix

  i915:
   - gvt: Fix a possible division by zero in vgpu display rate
     calculation"

* tag 'drm-next-2021-05-10' of git://anongit.freedesktop.org/drm/drm:
  drm/amdgpu: Use device specific BO size & stride check.
  drm/amdgpu: Init GFX10_ADDR_CONFIG for VCN v3 in DPG mode.
  drm/amd/pm: initialize variable
  drm/radeon: Avoid power table parsing memory leaks
  drm/radeon: Fix off-by-one power_state index heap overwrite
  drm/amd/display: Fix two cursor duplication when using overlay
  drm/amdgpu: add new MC firmware for Polaris12 32bit ASIC
  fbmem: Mark proc_fb_seq_ops as __maybe_unused
  drm/msm/dpu: Delete bonkers code
  drm/i915/gvt: Prevent divided by zero when calculating refresh rate
  amdgpu: fix GEM obj leak in amdgpu_display_user_framebuffer_create
  drm/amdgpu: Register VGA clients after init can no longer fail
  drm/amdgpu: Handling of amdgpu_device_resume return value for graceful teardown
  drm/amdgpu: fix r initial values
  drm/amd/display: fix wrong statement in mst hpd debugfs
  amdgpu/pm: set pp_dpm_dcefclk to readonly on NAVI10 and newer gpus
  amdgpu/pm: Prevent force of DCEFCLK on NAVI10 and SIENNA_CICHLID
  drm/amdgpu: fix concurrent VM flushes on Vega/Navi v2
  drm/amd/display: Reject non-zero src_y and src_x for video planes

3 years agoMerge tag 'block-5.13-2021-05-09' of git://git.kernel.dk/linux-block
Linus Torvalds [Sun, 9 May 2021 20:25:14 +0000 (13:25 -0700)]
Merge tag 'block-5.13-2021-05-09' of git://git.kernel.dk/linux-block

Pull block fix from Jens Axboe:
 "Turns out the bio max size change still has issues, so let's get it
  reverted for 5.13-rc1. We'll shake out the issues there and defer it
  to 5.14 instead"

* tag 'block-5.13-2021-05-09' of git://git.kernel.dk/linux-block:
  Revert "bio: limit bio max size"

3 years agoMerge tag '5.13-rc-smb3-part3' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sun, 9 May 2021 20:19:29 +0000 (13:19 -0700)]
Merge tag '5.13-rc-smb3-part3' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Three small SMB3 chmultichannel related changesets (also for stable)
  from the SMB3 test event this week.

  The other fixes are still in review/testing"

* tag '5.13-rc-smb3-part3' of git://git.samba.org/sfrench/cifs-2.6:
  smb3: if max_channels set to more than one channel request multichannel
  smb3: do not attempt multichannel to server which does not support it
  smb3: when mounting with multichannel include it in requested capabilities

3 years agoMerge tag 'sched-urgent-2021-05-09' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 9 May 2021 20:14:34 +0000 (13:14 -0700)]
Merge tag 'sched-urgent-2021-05-09' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Thomas Gleixner:
 "A set of scheduler updates:

   - Prevent PSI state corruption when schedule() races with cgroup
     move.

     A recent commit combined two PSI callbacks to reduce the number of
     cgroup tree updates, but missed that schedule() can drop rq::lock
     for load balancing, which opens the race window for
     cgroup_move_task() which then observes half updated state.

     The fix is to solely use task::ps_flags instead of looking at the
     potentially mismatching scheduler state

   - Prevent an out-of-bounds access in uclamp caused bu a rounding
     division which can lead to an off-by-one error exceeding the
     buckets array size.

   - Prevent unfairness caused by missing load decay when a task is
     attached to a cfs runqueue.

     The old load of the task was attached to the runqueue and never
     removed. Fix it by enforcing the load update through the hierarchy
     for unthrottled run queue instances.

   - A documentation fix fot the 'sched_verbose' command line option"

* tag 'sched-urgent-2021-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Fix unfairness caused by missing load decay
  sched: Fix out-of-bound access in uclamp
  psi: Fix psi state corruption when schedule() races with cgroup move
  sched,doc: sched_debug_verbose cmdline should be sched_verbose

3 years agoMerge tag 'locking-urgent-2021-05-09' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 9 May 2021 20:07:03 +0000 (13:07 -0700)]
Merge tag 'locking-urgent-2021-05-09' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Thomas Gleixner:
 "A set of locking related fixes and updates:

   - Two fixes for the futex syscall related to the timeout handling.

     FUTEX_LOCK_PI does not support the FUTEX_CLOCK_REALTIME bit and
     because it's not set the time namespace adjustment for clock
     MONOTONIC is applied wrongly.

     FUTEX_WAIT cannot support the FUTEX_CLOCK_REALTIME bit because its
     always a relative timeout.

   - Cleanups in the futex syscall entry points which became obvious
     when the two timeout handling bugs were fixed.

   - Cleanup of queued_write_lock_slowpath() as suggested by Linus

   - Fixup of the smp_call_function_single_async() prototype"

* tag 'locking-urgent-2021-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Make syscall entry points less convoluted
  futex: Get rid of the val2 conditional dance
  futex: Do not apply time namespace adjustment on FUTEX_LOCK_PI
  Revert 337f13046ff0 ("futex: Allow FUTEX_CLOCK_REALTIME with FUTEX_WAIT op")
  locking/qrwlock: Cleanup queued_write_lock_slowpath()
  smp: Fix smp_call_function_single_async prototype

3 years agoMerge tag 'perf_urgent_for_v5.13_rc1' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 9 May 2021 20:00:26 +0000 (13:00 -0700)]
Merge tag 'perf_urgent_for_v5.13_rc1' of git://git./linux/kernel/git/tip/tip

Pull x86 perf fix from Borislav Petkov:
 "Handle power-gating of AMD IOMMU perf counters properly when they are
  used"

* tag 'perf_urgent_for_v5.13_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/events/amd/iommu: Fix invalid Perf result due to IOMMU PMC power-gating

3 years agoMerge tag 'x86_urgent_for_v5.13_rc1' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 9 May 2021 19:52:25 +0000 (12:52 -0700)]
Merge tag 'x86_urgent_for_v5.13_rc1' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:
 "A bunch of things accumulated for x86 in the last two weeks:

   - Fix guest vtime accounting so that ticks happening while the guest
     is running can also be accounted to it. Along with a consolidation
     to the guest-specific context tracking helpers.

   - Provide for the host NMI handler running after a VMX VMEXIT to be
     able to run on the kernel stack correctly.

   - Initialize MSR_TSC_AUX when RDPID is supported and not RDTSCP (virt
     relevant - real hw supports both)

   - A code generation improvement to TASK_SIZE_MAX through the use of
     alternatives

   - The usual misc and related cleanups and improvements"

* tag 'x86_urgent_for_v5.13_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  KVM: x86: Consolidate guest enter/exit logic to common helpers
  context_tracking: KVM: Move guest enter/exit wrappers to KVM's domain
  context_tracking: Consolidate guest enter/exit wrappers
  sched/vtime: Move guest enter/exit vtime accounting to vtime.h
  sched/vtime: Move vtime accounting external declarations above inlines
  KVM: x86: Defer vtime accounting 'til after IRQ handling
  context_tracking: Move guest exit vtime accounting to separate helpers
  context_tracking: Move guest exit context tracking to separate helpers
  KVM/VMX: Invoke NMI non-IST entry instead of IST entry
  x86/cpu: Remove write_tsc() and write_rdtscp_aux() wrappers
  x86/cpu: Initialize MSR_TSC_AUX if RDTSCP *or* RDPID is supported
  x86/resctrl: Fix init const confusion
  x86: Delete UD0, UD1 traces
  x86/smpboot: Remove duplicate includes
  x86/cpu: Use alternative to generate the TASK_SIZE_MAX constant

3 years agoRevert "bio: limit bio max size"
Jens Axboe [Sun, 9 May 2021 03:49:48 +0000 (21:49 -0600)]
Revert "bio: limit bio max size"

This reverts commit cd2c7545ae1beac3b6aae033c7f31193b3255946.

Alex reports that the commit causes corruption with LUKS on ext4. Revert
it for now so that this can be investigated properly.

Link: https://lore.kernel.org/linux-block/1620493841.bxdq8r5haw.none@localhost/
Reported-by: Alex Xu (Hello71) <alex_y_xu@yahoo.ca>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoMerge tag 'riscv-for-linus-5.13-mw1' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 8 May 2021 18:52:37 +0000 (11:52 -0700)]
Merge tag 'riscv-for-linus-5.13-mw1' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - A fix to avoid over-allocating the kernel's mapping on !MMU systems,
   which could lead to up to 2MiB of lost memory

 - The SiFive address extension errata only manifest on rv64, they are
   now disabled on rv32 where they are unnecessary

 - A pair of late-landing cleanups

* tag 'riscv-for-linus-5.13-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: remove unused handle_exception symbol
  riscv: Consistify protect_kernel_linear_mapping_text_rodata() use
  riscv: enable SiFive errata CIP-453 and CIP-1200 Kconfig only if CONFIG_64BIT=y
  riscv: Only extend kernel reservation if mapped read-only

3 years agodrm/i915/display: fix compiler warning about array overrun
Linus Torvalds [Sat, 8 May 2021 18:30:22 +0000 (11:30 -0700)]
drm/i915/display: fix compiler warning about array overrun

intel_dp_check_mst_status() uses a 14-byte array to read the DPRX Event
Status Indicator data, but then passes that buffer at offset 10 off as
an argument to drm_dp_channel_eq_ok().

End result: there are only 4 bytes remaining of the buffer, yet
drm_dp_channel_eq_ok() wants a 6-byte buffer.  gcc-11 correctly warns
about this case:

  drivers/gpu/drm/i915/display/intel_dp.c: In function â€˜intel_dp_check_mst_status’:
  drivers/gpu/drm/i915/display/intel_dp.c:3491:22: warning: â€˜drm_dp_channel_eq_ok’ reading 6 bytes from a region of size 4 [-Wstringop-overread]
   3491 |                     !drm_dp_channel_eq_ok(&esi[10], intel_dp->lane_count)) {
        |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  drivers/gpu/drm/i915/display/intel_dp.c:3491:22: note: referencing argument 1 of type â€˜const u8 *’ {aka â€˜const unsigned char *’}
  In file included from drivers/gpu/drm/i915/display/intel_dp.c:38:
  include/drm/drm_dp_helper.h:1466:6: note: in a call to function â€˜drm_dp_channel_eq_ok’
   1466 | bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE],
        |      ^~~~~~~~~~~~~~~~~~~~
       6:14 elapsed

This commit just extends the original array by 2 zero-initialized bytes,
avoiding the warning.

There may be some underlying bug in here that caused this confusion, but
this is at least no worse than the existing situation that could use
random data off the stack.

Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 8 May 2021 17:44:36 +0000 (10:44 -0700)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi

Pull more SCSI updates from James Bottomley:
 "This is a set of minor fixes in various drivers (qla2xxx, ufs,
  scsi_debug, lpfc) one doc fix and a fairly large update to the fnic
  driver to remove the open coded iteration functions in favour of the
  scsi provided ones"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: fnic: Use scsi_host_busy_iter() to traverse commands
  scsi: fnic: Kill 'exclude_id' argument to fnic_cleanup_io()
  scsi: scsi_debug: Fix cmd_per_lun, set to max_queue
  scsi: ufs: core: Narrow down fast path in system suspend path
  scsi: ufs: core: Cancel rpm_dev_flush_recheck_work during system suspend
  scsi: ufs: core: Do not put UFS power into LPM if link is broken
  scsi: qla2xxx: Prevent PRLI in target mode
  scsi: qla2xxx: Add marginal path handling support
  scsi: target: tcmu: Return from tcmu_handle_completions() if cmd_id not found
  scsi: ufs: core: Fix a typo in ufs-sysfs.c
  scsi: lpfc: Fix bad memory access during VPD DUMP mailbox command
  scsi: lpfc: Fix DMA virtual address ptr assignment in bsg
  scsi: lpfc: Fix illegal memory access on Abort IOCBs
  scsi: blk-mq: Fix build warning when making htmldocs

3 years agoMerge tag 'kbuild-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy...
Linus Torvalds [Sat, 8 May 2021 17:00:11 +0000 (10:00 -0700)]
Merge tag 'kbuild-v5.13-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull more Kbuild updates from Masahiro Yamada:

 - Convert sh and sparc to use generic shell scripts to generate the
   syscall headers

 - refactor .gitignore files

 - Update kernel/config_data.gz only when the content of the .config
   is really changed, which avoids the unneeded re-link of vmlinux

 - move "remove stale files" workarounds to scripts/remove-stale-files

 - suppress unused-but-set-variable warnings by default for Clang
   as well

 - fix locale setting LANG=C to LC_ALL=C

 - improve 'make distclean'

 - always keep intermediate objects from scripts/link-vmlinux.sh

 - move IF_ENABLED out of <linux/kconfig.h> to make it self-contained

 - misc cleanups

* tag 'kbuild-v5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits)
  linux/kconfig.h: replace IF_ENABLED() with PTR_IF() in <linux/kernel.h>
  kbuild: Don't remove link-vmlinux temporary files on exit/signal
  kbuild: remove the unneeded comments for external module builds
  kbuild: make distclean remove tag files in sub-directories
  kbuild: make distclean work against $(objtree) instead of $(srctree)
  kbuild: refactor modname-multi by using suffix-search
  kbuild: refactor fdtoverlay rule
  kbuild: parameterize the .o part of suffix-search
  arch: use cross_compiling to check whether it is a cross build or not
  kbuild: remove ARCH=sh64 support from top Makefile
  .gitignore: prefix local generated files with a slash
  kbuild: replace LANG=C with LC_ALL=C
  Makefile: Move -Wno-unused-but-set-variable out of GCC only block
  kbuild: add a script to remove stale generated files
  kbuild: update config_data.gz only when the content of .config is changed
  .gitignore: ignore only top-level modules.builtin
  .gitignore: move tags and TAGS close to other tag files
  kernel/.gitgnore: remove stale timeconst.h and hz.bc
  usr/include: refactor .gitignore
  genksyms: fix stale comment
  ...

3 years agosmb3: if max_channels set to more than one channel request multichannel
Steve French [Sat, 8 May 2021 00:33:51 +0000 (19:33 -0500)]
smb3: if max_channels set to more than one channel request multichannel

Mounting with "multichannel" is obviously implied if user requested
more than one channel on mount (ie mount parm max_channels>1).
Currently both have to be specified. Fix that so that if max_channels
is greater than 1 on mount, enable multichannel rather than silently
falling back to non-multichannel.

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-By: Tom Talpey <tom@talpey.com>
Cc: <stable@vger.kernel.org> # v5.11+
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
3 years agosmb3: do not attempt multichannel to server which does not support it
Steve French [Sat, 8 May 2021 01:00:41 +0000 (20:00 -0500)]
smb3: do not attempt multichannel to server which does not support it

We were ignoring CAP_MULTI_CHANNEL in the server response - if the
server doesn't support multichannel we should not be attempting it.

See MS-SMB2 section 3.2.5.2

Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-By: Tom Talpey <tom@talpey.com>
Cc: <stable@vger.kernel.org> # v5.8+
Signed-off-by: Steve French <stfrench@microsoft.com>
3 years agoMerge tag 'powerpc-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sat, 8 May 2021 15:49:54 +0000 (08:49 -0700)]
Merge tag 'powerpc-5.13-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc updates and fixes from Michael Ellerman:
 "A bit of a mixture of things, tying up some loose ends.

  There's the removal of the nvlink code, which dependend on a commit in
  the vfio tree. Then the enablement of huge vmalloc which was in next
  for a few weeks but got dropped due to conflicts. And there's also a
  few fixes.

  Summary:

   - Remove the nvlink support now that it's only user has been removed.

   - Enable huge vmalloc mappings for Radix MMU (P9).

   - Fix KVM conversion to gfn-based MMU notifier callbacks.

   - Fix a kexec/kdump crash with hot plugged CPUs.

   - Fix boot failure on 32-bit with CONFIG_STACKPROTECTOR.

   - Restore alphabetic order of the selects under CONFIG_PPC.

  Thanks to: Christophe Leroy, Christoph Hellwig, Nicholas Piggin,
  Sandipan Das, and Sourabh Jain"

* tag 'powerpc-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  KVM: PPC: Book3S HV: Fix conversion to gfn-based MMU notifier callbacks
  powerpc/kconfig: Restore alphabetic order of the selects under CONFIG_PPC
  powerpc/32: Fix boot failure with CONFIG_STACKPROTECTOR
  powerpc/powernv/memtrace: Fix dcache flushing
  powerpc/kexec_file: Use current CPU info while setting up FDT
  powerpc/64s/radix: Enable huge vmalloc mappings
  powerpc/powernv: remove the nvlink support

3 years agosmb3: when mounting with multichannel include it in requested capabilities
Steve French [Fri, 7 May 2021 23:24:11 +0000 (18:24 -0500)]
smb3: when mounting with multichannel include it in requested capabilities

In the SMB3/SMB3.1.1 negotiate protocol request, we are supposed to
advertise CAP_MULTICHANNEL capability when establishing multiple
channels has been requested by the user doing the mount. See MS-SMB2
sections 2.2.3 and 3.2.5.2

Without setting it there is some risk that multichannel could fail
if the server interpreted the field strictly.

Reviewed-By: Tom Talpey <tom@talpey.com>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Cc: <stable@vger.kernel.org> # v5.8+
Signed-off-by: Steve French <stfrench@microsoft.com>
3 years agoMerge tag 'net-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Sat, 8 May 2021 15:31:46 +0000 (08:31 -0700)]
Merge tag 'net-5.13-rc1' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Networking fixes for 5.13-rc1, including fixes from bpf, can and
  netfilter trees. Self-contained fixes, nothing risky.

  Current release - new code bugs:

   - dsa: ksz: fix a few bugs found by static-checker in the new driver

   - stmmac: fix frame preemption handshake not triggering after
     interface restart

  Previous releases - regressions:

   - make nla_strcmp handle more then one trailing null character

   - fix stack OOB reads while fragmenting IPv4 packets in openvswitch
     and net/sched

   - sctp: do asoc update earlier in sctp_sf_do_dupcook_a

   - sctp: delay auto_asconf init until binding the first addr

   - stmmac: clear receive all(RA) bit when promiscuous mode is off

   - can: mcp251x: fix resume from sleep before interface was brought up

  Previous releases - always broken:

   - bpf: fix leakage of uninitialized bpf stack under speculation

   - bpf: fix masking negation logic upon negative dst register

   - netfilter: don't assume that skb_header_pointer() will never fail

   - only allow init netns to set default tcp cong to a restricted algo

   - xsk: fix xp_aligned_validate_desc() when len == chunk_size to avoid
     false positive errors

   - ethtool: fix missing NLM_F_MULTI flag when dumping

   - can: m_can: m_can_tx_work_queue(): fix tx_skb race condition

   - sctp: fix a SCTP_MIB_CURRESTAB leak in sctp_sf_do_dupcook_b

   - bridge: fix NULL-deref caused by a races between assigning
     rx_handler_data and setting the IFF_BRIDGE_PORT bit

  Latecomer:

   - seg6: add counters support for SRv6 Behaviors"

* tag 'net-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (73 commits)
  atm: firestream: Use fallthrough pseudo-keyword
  net: stmmac: Do not enable RX FIFO overflow interrupts
  mptcp: fix splat when closing unaccepted socket
  i40e: Remove LLDP frame filters
  i40e: Fix PHY type identifiers for 2.5G and 5G adapters
  i40e: fix the restart auto-negotiation after FEC modified
  i40e: Fix use-after-free in i40e_client_subtask()
  i40e: fix broken XDP support
  netfilter: nftables: avoid potential overflows on 32bit arches
  netfilter: nftables: avoid overflows in nft_hash_buckets()
  tcp: Specify cmsgbuf is user pointer for receive zerocopy.
  mlxsw: spectrum_mr: Update egress RIF list before route's action
  net: ipa: fix inter-EE IRQ register definitions
  can: m_can: m_can_tx_work_queue(): fix tx_skb race condition
  can: mcp251x: fix resume from sleep before interface was brought up
  can: mcp251xfd: mcp251xfd_probe(): add missing can_rx_offload_del() in error path
  can: mcp251xfd: mcp251xfd_probe(): fix an error pointer dereference in probe
  netfilter: nftables: Fix a memleak from userdata error path in new objects
  netfilter: remove BUG_ON() after skb_header_pointer()
  netfilter: nfnetlink_osf: Fix a missing skb_header_pointer() NULL check
  ...

3 years agolinux/kconfig.h: replace IF_ENABLED() with PTR_IF() in <linux/kernel.h>
Masahiro Yamada [Wed, 5 May 2021 17:45:15 +0000 (02:45 +0900)]
linux/kconfig.h: replace IF_ENABLED() with PTR_IF() in <linux/kernel.h>

<linux/kconfig.h> is included from all the kernel-space source files,
including C, assembly, linker scripts. It is intended to contain a
minimal set of macros to evaluate CONFIG options.

IF_ENABLED() is an intruder here because (x ? y : z) is C code, which
should not be included from assembly files or linker scripts.

Also, <linux/kconfig.h> is no longer self-contained because NULL is
defined in <linux/stddef.h>.

Move IF_ENABLED() out to <linux/kernel.h> as PTR_IF(). PTF_IF()
takes the general boolean expression instead of a CONFIG option
so that it fits better in <linux/kernel.h>.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
3 years agoMerge branch 'master' into next
Michael Ellerman [Sat, 8 May 2021 11:12:55 +0000 (21:12 +1000)]
Merge branch 'master' into next

Merge master back into next, this allows us to resolve some conflicts in
arch/powerpc/Kconfig, and also re-sort the symbols under config PPC so
that they are in alphabetical order again.

3 years agohabanalabs/gaudi: Fix a potential use after free in gaudi_memset_device_memory
Lv Yunlong [Mon, 26 Apr 2021 13:43:46 +0000 (06:43 -0700)]
habanalabs/gaudi: Fix a potential use after free in gaudi_memset_device_memory

Our code analyzer reported a uaf.

In gaudi_memset_device_memory, cb is get via hl_cb_kernel_create()
with 2 refcount.
If hl_cs_allocate_job() failed, the execution runs into release_cb
branch. One ref of cb is dropped by hl_cb_put(cb) and could be freed
if other thread also drops one ref. Then cb is used by cb->id later,
which is a potential uaf.

My patch add a variable 'id' to accept the value of cb->id before the
hl_cb_put(cb) is called, to avoid the potential uaf.

Fixes: 423815bf02e25 ("habanalabs/gaudi: remove PCI access to SM block")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
3 years agohabanalabs: wait for interrupt wrong timeout calculation
Ofir Bitton [Tue, 27 Apr 2021 14:49:25 +0000 (17:49 +0300)]
habanalabs: wait for interrupt wrong timeout calculation

Wait for interrupt timeout calculation is wrong, hence timeout occurs
when user waits on an interrupt with certain timeout values.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
3 years agohabanalabs: ignore f/w status error
Oded Gabbay [Mon, 12 Apr 2021 06:52:05 +0000 (09:52 +0300)]
habanalabs: ignore f/w status error

In case firmware has a bug and erroneously reports a status error
(e.g. device unusable) during boot, allow the user to tell the driver
to continue the boot regardless of the error status.

This will be done via kernel parameter which exposes a mask. The
user that loads the driver can decide exactly which status error to
ignore and which to take into account. The bitmask is according to
defines in hl_boot_if.h

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
3 years agohabanalabs: change error level of security not ready
Oded Gabbay [Mon, 12 Apr 2021 06:38:22 +0000 (09:38 +0300)]
habanalabs: change error level of security not ready

This error indicates a problem in the security initialization inside
the f/w so we need to stop the device loading because it won't be
usable.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
3 years agohabanalabs: skip reading f/w errors on bad status
Oded Gabbay [Sun, 11 Apr 2021 18:06:05 +0000 (21:06 +0300)]
habanalabs: skip reading f/w errors on bad status

If we read all FF from the boot status register, then something is
totally wrong and there is no point of reading specific errors.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
3 years agohabanalabs: expose ASIC specific PLL index
Bharat Jauhari [Thu, 25 Mar 2021 16:15:40 +0000 (18:15 +0200)]
habanalabs: expose ASIC specific PLL index

Currently the user cannot interpret the PLL information based on index
as its exposed as an integer.

This commit exposes ASIC specific PLL indexes and maps it to a generic
FW compatible index.

Signed-off-by: Bharat Jauhari <bjauhari@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
3 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Jakub Kicinski [Fri, 7 May 2021 23:10:12 +0000 (16:10 -0700)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

1) Add SECMARK revision 1 to fix incorrect layout that prevents
   from remove rule with this target, from Phil Sutter.

2) Fix pernet exit path spat in arptables, from Florian Westphal.

3) Missing rcu_read_unlock() for unknown nfnetlink callbacks,
   reported by syzbot, from Eric Dumazet.

4) Missing check for skb_header_pointer() NULL pointer in
   nfnetlink_osf.

5) Remove BUG_ON() after skb_header_pointer() from packet path
   in several conntrack helper and the TCP tracker.

6) Fix memleak in the new object error path of userdata.

7) Avoid overflows in nft_hash_buckets(), reported by syzbot,
   also from Eric.

8) Avoid overflows in 32bit arches, from Eric.

* git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf:
  netfilter: nftables: avoid potential overflows on 32bit arches
  netfilter: nftables: avoid overflows in nft_hash_buckets()
  netfilter: nftables: Fix a memleak from userdata error path in new objects
  netfilter: remove BUG_ON() after skb_header_pointer()
  netfilter: nfnetlink_osf: Fix a missing skb_header_pointer() NULL check
  netfilter: nfnetlink: add a missing rcu_read_unlock()
  netfilter: arptables: use pernet ops struct during unregister
  netfilter: xt_SECMARK: add new revision to fix structure layout
====================

Link: https://lore.kernel.org/r/20210507174739.1850-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Jakub Kicinski [Fri, 7 May 2021 23:04:22 +0000 (16:04 -0700)]
Merge branch '40GbE' of git://git./linux/kernel/git/tnguy/net-queue

Nguyen, Anthony L says:

====================
Intel Wired LAN Driver Updates 2021-05-07

This series contains updates to i40e driver only.

Magnus fixes XDP by adding and correcting checks that were caused by a
previous commit which introduced a new variable but did not account for
it in all paths.

Yunjian Wang adds a return in an error path to prevent reading a freed
pointer.

Jaroslaw forces link reset when changing FEC so that changes take
affect.

Mateusz fixes PHY types for 2.5G and 5G as there is a differentiation on
PHY identifiers based on operation.

Arkadiusz removes filtering of LLDP frames for software DCB as this is
preventing them from being properly transmitted.

* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  i40e: Remove LLDP frame filters
  i40e: Fix PHY type identifiers for 2.5G and 5G adapters
  i40e: fix the restart auto-negotiation after FEC modified
  i40e: Fix use-after-free in i40e_client_subtask()
  i40e: fix broken XDP support
====================

Link: https://lore.kernel.org/r/20210507164151.2878147-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoatm: firestream: Use fallthrough pseudo-keyword
Wei Ming Chen [Fri, 7 May 2021 12:38:43 +0000 (20:38 +0800)]
atm: firestream: Use fallthrough pseudo-keyword

Add pseudo-keyword macro fallthrough[1]

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Wei Ming Chen <jj251510319013@gmail.com>
Link: https://lore.kernel.org/r/20210507123843.10602-1-jj251510319013@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: stmmac: Do not enable RX FIFO overflow interrupts
Yannick Vignon [Thu, 6 May 2021 14:33:12 +0000 (16:33 +0200)]
net: stmmac: Do not enable RX FIFO overflow interrupts

The RX FIFO overflows when the system is not able to process all received
packets and they start accumulating (first in the DMA queue in memory,
then in the FIFO). An interrupt is then raised for each overflowing packet
and handled in stmmac_interrupt(). This is counter-productive, since it
brings the system (or more likely, one CPU core) to its knees to process
the FIFO overflow interrupts.

stmmac_interrupt() handles overflow interrupts by writing the rx tail ptr
into the corresponding hardware register (according to the MAC spec, this
has the effect of restarting the MAC DMA). However, without freeing any rx
descriptors, the DMA stops right away, and another overflow interrupt is
raised as the FIFO overflows again. Since the DMA is already restarted at
the end of stmmac_rx_refill() after freeing descriptors, disabling FIFO
overflow interrupts and the corresponding handling code has no side effect,
and eliminates the interrupt storm when the RX FIFO overflows.

Signed-off-by: Yannick Vignon <yannick.vignon@nxp.com>
Link: https://lore.kernel.org/r/20210506143312.20784-1-yannick.vignon@oss.nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agomptcp: fix splat when closing unaccepted socket
Paolo Abeni [Fri, 7 May 2021 00:16:38 +0000 (17:16 -0700)]
mptcp: fix splat when closing unaccepted socket

If userspace exits before calling accept() on a listener that had at least
one new connection ready, we get:

   Attempt to release TCP socket in state 8

This happens because the mptcp socket gets cloned when the TCP connection
is ready, but the socket is never exposed to userspace.

The client additionally sends a DATA_FIN, which brings connection into
CLOSE_WAIT state.  This in turn prevents the orphan+state reset fixup
in mptcp_sock_destruct() from doing its job.

Fixes: 3721b9b64676b ("mptcp: Track received DATA_FIN sequence number and add related helpers")
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/185
Tested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Link: https://lore.kernel.org/r/20210507001638.225468-1-mathew.j.martineau@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge tag 'tag-chrome-platform-for-v5.13' of git://git.kernel.org/pub/scm/linux/kerne...
Linus Torvalds [Fri, 7 May 2021 21:49:18 +0000 (14:49 -0700)]
Merge tag 'tag-chrome-platform-for-v5.13' of git://git./linux/kernel/git/chrome-platform/linux

Pull chrome platform updates from Benson Leung:
 "cros_ec_typec:

   - Changes around DP mode check, hard reset, tracking port change.

  cros_ec misc:

   - wilco_ec: Convert stream-like files from nonseekable to stream open

   - cros_usbpd_notify: Listen to EC_HSOT_EVENT_USB_MUX host event

   - fix format warning in cros_ec_typec"

* tag 'tag-chrome-platform-for-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
  platform/chrome: cros_ec_lpc: Use DEFINE_MUTEX() for mutex lock
  platform/chrome: cros_usbpd_notify: Listen to EC_HOST_EVENT_USB_MUX host event
  platform/chrome: cros_ec_typec: Add DP mode check
  platform/chrome: cros_ec_typec: Handle hard reset
  platform/chrome: cros_ec: Add Type C hard reset
  platform/chrome: cros_ec_typec: Track port role
  platform/chrome: cros_ec_typec: fix clang -Wformat warning
  platform/chrome: cros_ec_typec: Check for device within remove function
  platform/chrome: wilco_ec: convert stream-like files from nonseekable_open -> stream_open

3 years agoMerge tag 'i3c/for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux
Linus Torvalds [Fri, 7 May 2021 20:06:34 +0000 (13:06 -0700)]
Merge tag 'i3c/for-5.13' of git://git./linux/kernel/git/i3c/linux

Pull i3cupdates from Alexandre Belloni:
 "Fix i3c_master_register error path"

* tag 'i3c/for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
  Revert "i3c master: fix missing destroy_workqueue() on error in i3c_master_register"
  dt-bindings: i3c: Fix silvaco,i3c-master-v1 compatible string
  i3c: master: svc: remove redundant assignment to cmd->read_len

3 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 7 May 2021 19:11:05 +0000 (12:11 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull more arm64 updates from Catalin Marinas:
 "A mix of fixes and clean-ups that turned up too late for the first
  pull request:

   - Restore terminal stack frame records. Their previous removal caused
     traces which cross secondary_start_kernel to terminate one entry
     too late, with a spurious "0" entry.

   - Fix boot warning with pseudo-NMI due to the way we manipulate the
     PMR register.

   - ACPI fixes: avoid corruption of interrupt mappings on watchdog
     probe failure (GTDT), prevent unregistering of GIC SGIs.

   - Force SPARSEMEM_VMEMMAP as the only memory model, it saves with
     having to test all the other combinations.

   - Documentation fixes and updates: tagged address ABI exceptions on
     brk/mmap/mremap(), event stream frequency, update booting
     requirements on the configuration of traps"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: kernel: Update the stale comment
  arm64: Fix the documented event stream frequency
  arm64: entry: always set GIC_PRIO_PSR_I_SET during entry
  arm64: Explicitly document boot requirements for SVE
  arm64: Explicitly require that FPSIMD instructions do not trap
  arm64: Relax booting requirements for configuration of traps
  arm64: cpufeatures: use min and max
  arm64: stacktrace: restore terminal records
  arm64/vdso: Discard .note.gnu.property sections in vDSO
  arm64: doc: Add brk/mmap/mremap() to the Tagged Address ABI Exceptions
  psci: Remove unneeded semicolon
  ACPI: irq: Prevent unregistering of GIC SGIs
  ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure
  arm64: Show three registers per line
  arm64: remove HAVE_DEBUG_BUGVERBOSE
  arm64: alternative: simplify passing alt_region
  arm64: Force SPARSEMEM_VMEMMAP as the only memory management model
  arm64: vdso32: drop -no-integrated-as flag

3 years agoMerge tag 'sound-fix-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 7 May 2021 18:40:18 +0000 (11:40 -0700)]
Merge tag 'sound-fix-5.13-rc1' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Just a few device-specific HD-audio and USB-audio fixes"

* tag 'sound-fix-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda: generic: change the DAC ctl name for LO+SPK or LO+HP
  ALSA: hda/realtek: Add fixup for HP OMEN laptop
  ALSA: hda/realtek: Fix speaker amp on HP Envy AiO 32
  ALSA: hda/realtek: Fix silent headphone output on ASUS UX430UA
  ALSA: usb-audio: Add dB range mapping for Sennheiser Communications Headset PC 8
  ALSA: hda/realtek: ALC285 Thinkpad jack pin quirk is unreachable

3 years agoMerge tag 'block-5.13-2021-05-07' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 7 May 2021 18:35:12 +0000 (11:35 -0700)]
Merge tag 'block-5.13-2021-05-07' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - dasd spelling fixes (Bhaskar)

 - Limit bio max size on multi-page bvecs to the hardware limit, to
   avoid overly large bio's (and hence latencies). Originally queued for
   the merge window, but needed a fix and was dropped from the initial
   pull (Changheun)

 - NVMe pull request (Christoph):
      - reset the bdev to ns head when failover (Daniel Wagner)
      - remove unsupported command noise (Keith Busch)
      - misc passthrough improvements (Kanchan Joshi)
      - fix controller ioctl through ns_head (Minwoo Im)
      - fix controller timeouts during reset (Tao Chiu)

 - rnbd fixes/cleanups (Gioh, Md, Dima)

 - Fix iov_iter re-expansion (yangerkun)

* tag 'block-5.13-2021-05-07' of git://git.kernel.dk/linux-block:
  block: reexpand iov_iter after read/write
  nvmet: remove unsupported command noise
  nvme-multipath: reset bdev to ns head when failover
  nvme-pci: fix controller reset hang when racing with nvme_timeout
  nvme: move the fabrics queue ready check routines to core
  nvme: avoid memset for passthrough requests
  nvme: add nvme_get_ns helper
  nvme: fix controller ioctl through ns_head
  bio: limit bio max size
  RDMA/rtrs: fix uninitialized symbol 'cnt'
  s390: dasd: Mundane spelling fixes
  block/rnbd: Remove all likely and unlikely
  block/rnbd-clt: Check the return value of the function rtrs_clt_query
  block/rnbd: Fix style issues
  block/rnbd-clt: Change queue_depth type in rnbd_clt_session to size_t

3 years agoMerge tag 'io_uring-5.13-2021-05-07' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 7 May 2021 18:29:23 +0000 (11:29 -0700)]
Merge tag 'io_uring-5.13-2021-05-07' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "Mostly fixes for merge window merged code. In detail:

   - Error case memory leak fixes (Colin, Zqiang)

   - Add the tools/io_uring/ to the list of maintained files (Lukas)

   - Set of fixes for the modified buffer registration API (Pavel)

   - Sanitize io thread setup on x86 (Stefan)

   - Ensure we truncate transfer count for registered buffers (Thadeu)"

* tag 'io_uring-5.13-2021-05-07' of git://git.kernel.dk/linux-block:
  x86/process: setup io_threads more like normal user space threads
  MAINTAINERS: add io_uring tool to IO_URING
  io_uring: truncate lengths larger than MAX_RW_COUNT on provide buffers
  io_uring: Fix memory leak in io_sqe_buffers_register()
  io_uring: Fix premature return from loop and memory leak
  io_uring: fix unchecked error in switch_start()
  io_uring: allow empty slots for reg buffers
  io_uring: add more build check for uapi
  io_uring: dont overlap internal and user req flags
  io_uring: fix drain with rsrc CQEs

3 years agoMerge tag 'nfs-for-5.13-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Fri, 7 May 2021 18:23:41 +0000 (11:23 -0700)]
Merge tag 'nfs-for-5.13-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  Stable fixes:

   - Add validation of the UDP retrans parameter to prevent shift
     out-of-bounds

   - Don't discard pNFS layout segments that are marked for return

  Bugfixes:

   - Fix a NULL dereference crash in xprt_complete_bc_request() when the
     NFSv4.1 server misbehaves.

   - Fix the handling of NFS READDIR cookie verifiers

   - Sundry fixes to ensure attribute revalidation works correctly when
     the server does not return post-op attributes.

   - nfs4_bitmask_adjust() must not change the server global bitmasks

   - Fix major timeout handling in the RPC code.

   - NFSv4.2 fallocate() fixes.

   - Fix the NFSv4.2 SEEK_HOLE/SEEK_DATA end-of-file handling

   - Copy offload attribute revalidation fixes

   - Fix an incorrect filehandle size check in the pNFS flexfiles driver

   - Fix several RDMA transport setup/teardown races

   - Fix several RDMA queue wrapping issues

   - Fix a misplaced memory read barrier in sunrpc's call_decode()

  Features:

   - Micro optimisation of the TCP transmission queue using TCP_CORK

   - statx() performance improvements by further splitting up the
     tracking of invalid cached file metadata.

   - Support the NFSv4.2 'change_attr_type' attribute and use it to
     optimise handling of change attribute updates"

* tag 'nfs-for-5.13-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (85 commits)
  xprtrdma: Fix a NULL dereference in frwr_unmap_sync()
  sunrpc: Fix misplaced barrier in call_decode
  NFSv4.2: Remove ifdef CONFIG_NFSD from NFSv4.2 client SSC code.
  xprtrdma: Move fr_mr field to struct rpcrdma_mr
  xprtrdma: Move the Work Request union to struct rpcrdma_mr
  xprtrdma: Move fr_linv_done field to struct rpcrdma_mr
  xprtrdma: Move cqe to struct rpcrdma_mr
  xprtrdma: Move fr_cid to struct rpcrdma_mr
  xprtrdma: Remove the RPC/RDMA QP event handler
  xprtrdma: Don't display r_xprt memory addresses in tracepoints
  xprtrdma: Add an rpcrdma_mr_completion_class
  xprtrdma: Add tracepoints showing FastReg WRs and remote invalidation
  xprtrdma: Avoid Send Queue wrapping
  xprtrdma: Do not wake RPC consumer on a failed LocalInv
  xprtrdma: Do not recycle MR after FastReg/LocalInv flushes
  xprtrdma: Clarify use of barrier in frwr_wc_localinv_done()
  xprtrdma: Rename frwr_release_mr()
  xprtrdma: rpcrdma_mr_pop() already does list_del_init()
  xprtrdma: Delete rpcrdma_recv_buffer_put()
  xprtrdma: Fix cwnd update ordering
  ...

3 years agoMerge tag '9p-for-5.13-rc1' of git://github.com/martinetd/linux
Linus Torvalds [Fri, 7 May 2021 18:18:52 +0000 (11:18 -0700)]
Merge tag '9p-for-5.13-rc1' of git://github.com/martinetd/linux

Pull 9p updates from Dominique Martinet:
 "An error handling fix and constification"

* tag '9p-for-5.13-rc1' of git://github.com/martinetd/linux:
  fs: 9p: fix v9fs_file_open writeback fid error check
  9p: Constify static struct v9fs_attr_group

3 years agoi40e: Remove LLDP frame filters
Arkadiusz Kubalewski [Fri, 16 Apr 2021 21:43:57 +0000 (23:43 +0200)]
i40e: Remove LLDP frame filters

Remove filters from being setup in case of software DCB and allow the
LLDP frames to be properly transmitted to the wire.

It is not possible to transmit the LLDP frame out of the port, if they
are filtered by control VSI. This prohibits software LLDP agent
properly communicate its DCB capabilities to the neighbors.

Fixes: 4b208eaa8078 ("i40e: Add init and default config of software based DCB")
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Tested-by: Imam Hassan Reza Biswas <imam.hassan.reza.biswas@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoi40e: Fix PHY type identifiers for 2.5G and 5G adapters
Mateusz Palczewski [Tue, 13 Apr 2021 14:43:07 +0000 (14:43 +0000)]
i40e: Fix PHY type identifiers for 2.5G and 5G adapters

Unlike other supported adapters, 2.5G and 5G use different
PHY type identifiers for reading/writing PHY settings
and for reading link status. This commit introduces
separate PHY identifiers for these two operation types.

Fixes: 2e45d3f4677a ("i40e: Add support for X710 B/P & SFP+ cards")
Signed-off-by: Dawid Lukwinski <dawid.lukwinski@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoi40e: fix the restart auto-negotiation after FEC modified
Jaroslaw Gawin [Tue, 13 Apr 2021 14:19:40 +0000 (14:19 +0000)]
i40e: fix the restart auto-negotiation after FEC modified

When FEC mode was changed the link didn't know it because
the link was not reset and new parameters were not negotiated.
Set a flag 'I40E_AQ_PHY_ENABLE_ATOMIC_LINK' in 'abilities'
to restart the link and make it run with the new settings.

Fixes: 1d96340196f1 ("i40e: Add support FEC configuration for Fortville 25G")
Signed-off-by: Jaroslaw Gawin <jaroslawx.gawin@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoi40e: Fix use-after-free in i40e_client_subtask()
Yunjian Wang [Mon, 12 Apr 2021 14:41:18 +0000 (22:41 +0800)]
i40e: Fix use-after-free in i40e_client_subtask()

Currently the call to i40e_client_del_instance frees the object
pf->cinst, however pf->cinst->lan_info is being accessed after
the free. Fix this by adding the missing return.

Addresses-Coverity: ("Read from pointer after free")
Fixes: 7b0b1a6d0ac9 ("i40e: Disable iWARP VSI PETCP_ENA flag on netdev down events")
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoi40e: fix broken XDP support
Magnus Karlsson [Mon, 26 Apr 2021 11:14:01 +0000 (13:14 +0200)]
i40e: fix broken XDP support

Commit 12738ac4754e ("i40e: Fix sparse errors in i40e_txrx.c") broke
XDP support in the i40e driver. That commit was fixing a sparse error
in the code by introducing a new variable xdp_res instead of
overloading this into the skb pointer. The problem is that the code
later uses the skb pointer in if statements and these where not
extended to also test for the new xdp_res variable. Fix this by adding
the correct tests for xdp_res in these places.

The skb pointer was used to store the result of the XDP program by
overloading the results in the error pointer
ERR_PTR(-result). Therefore, the allocation failure test that used to
only test for !skb now need to be extended to also consider !xdp_res.

i40e_cleanup_headers() had a check that based on the skb value being
an error pointer, i.e. a result from the XDP program != XDP_PASS, and
if so start to process a new packet immediately, instead of populating
skb fields and sending the skb to the stack. This check is not needed
anymore, since we have added an explicit test for xdp_res being set
and if so just do continue to pick the next packet from the NIC.

Fixes: 12738ac4754e ("i40e: Fix sparse errors in i40e_txrx.c")
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: Jesper Dangaard Brouer <brouer@redhat.com>
Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agonetfilter: nftables: avoid potential overflows on 32bit arches
Eric Dumazet [Thu, 6 May 2021 12:53:50 +0000 (05:53 -0700)]
netfilter: nftables: avoid potential overflows on 32bit arches

User space could ask for very large hash tables, we need to make sure
our size computations wont overflow.

nf_tables_newset() needs to double check the u64 size
will fit into size_t field.

Fixes: 0ed6389c483d ("netfilter: nf_tables: rename set implementations")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
3 years agonetfilter: nftables: avoid overflows in nft_hash_buckets()
Eric Dumazet [Thu, 6 May 2021 12:53:23 +0000 (05:53 -0700)]
netfilter: nftables: avoid overflows in nft_hash_buckets()

Number of buckets being stored in 32bit variables, we have to
ensure that no overflows occur in nft_hash_buckets()

syzbot injected a size == 0x40000000 and reported:

UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13
shift exponent 64 is too large for 64-bit type 'long unsigned int'
CPU: 1 PID: 29539 Comm: syz-executor.4 Not tainted 5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148
 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327
 __roundup_pow_of_two include/linux/log2.h:57 [inline]
 nft_hash_buckets net/netfilter/nft_set_hash.c:411 [inline]
 nft_hash_estimate.cold+0x19/0x1e net/netfilter/nft_set_hash.c:652
 nft_select_set_ops net/netfilter/nf_tables_api.c:3586 [inline]
 nf_tables_newset+0xe62/0x3110 net/netfilter/nf_tables_api.c:4322
 nfnetlink_rcv_batch+0xa09/0x24b0 net/netfilter/nfnetlink.c:488
 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:612 [inline]
 nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:630
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46

Fixes: 0ed6389c483d ("netfilter: nf_tables: rename set implementations")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
3 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Fri, 7 May 2021 07:34:51 +0000 (00:34 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge yet more updates from Andrew Morton:
 "This is everything else from -mm for this merge window.

  90 patches.

  Subsystems affected by this patch series: mm (cleanups and slub),
  alpha, procfs, sysctl, misc, core-kernel, bitmap, lib, compat,
  checkpatch, epoll, isofs, nilfs2, hpfs, exit, fork, kexec, gcov,
  panic, delayacct, gdb, resource, selftests, async, initramfs, ipc,
  drivers/char, and spelling"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (90 commits)
  mm: fix typos in comments
  mm: fix typos in comments
  treewide: remove editor modelines and cruft
  ipc/sem.c: spelling fix
  fs: fat: fix spelling typo of values
  kernel/sys.c: fix typo
  kernel/up.c: fix typo
  kernel/user_namespace.c: fix typos
  kernel/umh.c: fix some spelling mistakes
  include/linux/pgtable.h: few spelling fixes
  mm/slab.c: fix spelling mistake "disired" -> "desired"
  scripts/spelling.txt: add "overflw"
  scripts/spelling.txt: Add "diabled" typo
  scripts/spelling.txt: add "overlfow"
  arm: print alloc free paths for address in registers
  mm/vmalloc: remove vwrite()
  mm: remove xlate_dev_kmem_ptr()
  drivers/char: remove /dev/kmem for good
  mm: fix some typos and code style problems
  ipc/sem.c: mundane typo fixes
  ...

3 years agomm: fix typos in comments
Lu Jialin [Fri, 7 May 2021 01:06:50 +0000 (18:06 -0700)]
mm: fix typos in comments

succed -> succeed in mm/hugetlb.c
wil -> will in mm/mempolicy.c
wit -> with in mm/page_alloc.c
Retruns -> Returns in mm/page_vma_mapped.c
confict -> conflict in mm/secretmem.c
No functionality changed.

Link: https://lkml.kernel.org/r/20210408140027.60623-1-lujialin4@huawei.com
Signed-off-by: Lu Jialin <lujialin4@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm: fix typos in comments
Ingo Molnar [Fri, 7 May 2021 01:06:47 +0000 (18:06 -0700)]
mm: fix typos in comments

Fix ~94 single-word typos in locking code comments, plus a few
very obvious grammar mistakes.

Link: https://lkml.kernel.org/r/20210322212624.GA1963421@gmail.com
Link: https://lore.kernel.org/r/20210322205203.GB1959563@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agotreewide: remove editor modelines and cruft
Masahiro Yamada [Fri, 7 May 2021 01:06:44 +0000 (18:06 -0700)]
treewide: remove editor modelines and cruft

The section "19) Editor modelines and other cruft" in
Documentation/process/coding-style.rst clearly says, "Do not include any
of these in source files."

I recently receive a patch to explicitly add a new one.

Let's do treewide cleanups, otherwise some people follow the existing code
and attempt to upstream their favoriate editor setups.

It is even nicer if scripts/checkpatch.pl can check it.

If we like to impose coding style in an editor-independent manner, I think
editorconfig (patch [1]) is a saner solution.

[1] https://lore.kernel.org/lkml/20200703073143.423557-1-danny@kdrag0n.dev/

Link: https://lkml.kernel.org/r/20210324054457.1477489-1-masahiroy@kernel.org
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org> [auxdisplay]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoipc/sem.c: spelling fix
Bhaskar Chowdhury [Fri, 7 May 2021 01:06:41 +0000 (18:06 -0700)]
ipc/sem.c: spelling fix

s/purpuse/purpose/

Link: https://lkml.kernel.org/r/20210319221432.26631-1-unixbhaskar@gmail.com
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agofs: fat: fix spelling typo of values
dingsenjie [Fri, 7 May 2021 01:06:39 +0000 (18:06 -0700)]
fs: fat: fix spelling typo of values

vaules -> values

Link: https://lkml.kernel.org/r/20210302034817.30384-1-dingsenjie@163.com
Signed-off-by: dingsenjie <dingsenjie@yulong.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agokernel/sys.c: fix typo
Xiaofeng Cao [Fri, 7 May 2021 01:06:36 +0000 (18:06 -0700)]
kernel/sys.c: fix typo

change 'infite'     to 'infinite'
change 'concurent'  to 'concurrent'
change 'memvers'    to 'members'
change 'decendants' to 'descendants'
change 'argumets'   to 'arguments'

Link: https://lkml.kernel.org/r/20210316112904.10661-1-cxfcosmos@gmail.com
Signed-off-by: Xiaofeng Cao <caoxiaofeng@yulong.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agokernel/up.c: fix typo
Bhaskar Chowdhury [Fri, 7 May 2021 01:06:33 +0000 (18:06 -0700)]
kernel/up.c: fix typo

s/condtions/conditions/

Link: https://lkml.kernel.org/r/20210317032732.3260835-1-unixbhaskar@gmail.com
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agokernel/user_namespace.c: fix typos
Xiaofeng Cao [Fri, 7 May 2021 01:06:30 +0000 (18:06 -0700)]
kernel/user_namespace.c: fix typos

change 'verifing' to 'verifying'
change 'certaint' to 'certain'
change 'approprpiate' to 'appropriate'

Link: https://lkml.kernel.org/r/20210317100129.12440-1-caoxiaofeng@yulong.com
Signed-off-by: Xiaofeng Cao <caoxiaofeng@yulong.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agokernel/umh.c: fix some spelling mistakes
zhouchuangao [Fri, 7 May 2021 01:06:27 +0000 (18:06 -0700)]
kernel/umh.c: fix some spelling mistakes

Fix some spelling mistakes, and modify the order of the parameter comments
to be consistent with the order of the parameters passed to the function.

Link: https://lkml.kernel.org/r/1615636139-4076-1-git-send-email-zhouchuangao@vivo.com
Signed-off-by: zhouchuangao <zhouchuangao@vivo.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoinclude/linux/pgtable.h: few spelling fixes
Bhaskar Chowdhury [Fri, 7 May 2021 01:06:24 +0000 (18:06 -0700)]
include/linux/pgtable.h: few spelling fixes

Few spelling fixes throughout the file.

Link: https://lkml.kernel.org/r/20210318201404.6380-1-unixbhaskar@gmail.com
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/slab.c: fix spelling mistake "disired" -> "desired"
Colin Ian King [Fri, 7 May 2021 01:06:21 +0000 (18:06 -0700)]
mm/slab.c: fix spelling mistake "disired" -> "desired"

There is a spelling mistake in a comment. Fix it.

Link: https://lkml.kernel.org/r/20210317094158.5762-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoscripts/spelling.txt: add "overflw"
Drew Fustini [Fri, 7 May 2021 01:06:18 +0000 (18:06 -0700)]
scripts/spelling.txt: add "overflw"

Add typo "overflw" for "overflow".  This typo was found and fixed in
drivers/clocksource/timer-pistachio.c.

Link: https://lore.kernel.org/lkml/20210305090315.384547-1-drew@beagleboard.org/
Link: https://lkml.kernel.org/r/20210305095151.388182-1-drew@beagleboard.org
Signed-off-by: Drew Fustini <drew@beagleboard.org>
Suggested-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoscripts/spelling.txt: Add "diabled" typo
zuoqilin [Fri, 7 May 2021 01:06:15 +0000 (18:06 -0700)]
scripts/spelling.txt: Add "diabled" typo

Increase "diabled" spelling error check.

Link: https://lkml.kernel.org/r/20210304070106.2313-1-zuoqilin1@163.com
Signed-off-by: zuoqilin <zuoqilin@yulong.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoscripts/spelling.txt: add "overlfow"
Drew Fustini [Fri, 7 May 2021 01:06:12 +0000 (18:06 -0700)]
scripts/spelling.txt: add "overlfow"

Add typo "overlfow" for "overflow". This typo was found and fixed in
net/sctp/tsnmap.c.

Link: https://lore.kernel.org/netdev/20210304055548.56829-1-drew@beagleboard.org/
Link: https://lkml.kernel.org/r/20210304072657.64577-1-drew@beagleboard.org
Signed-off-by: Drew Fustini <drew@beagleboard.org>
Suggested-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoarm: print alloc free paths for address in registers
Maninder Singh [Fri, 7 May 2021 01:06:09 +0000 (18:06 -0700)]
arm: print alloc free paths for address in registers

In case of a use after free kernel oops, the freeing path of the object
is required to debug futher.  In most of cases the object address is
present in one of the registers.

Thus check the register's address and if it belongs to slab, print its
alloc and free path.

e.g. in the below issue register r6 belongs to slab, and a use after
free issue occurred on one of its dereferenced values:

  Unable to handle kernel paging request at virtual address 6b6b6b6f
  ....
  pc : [<c0538afc>]    lr : [<c0465674>]    psr: 60000013
  sp : c8927d40  ip : ffffefff  fp : c8aa8020
  r10: c8927e10  r9 : 00000001  r8 : 00400cc0
  r7 : 00000000  r6 : c8ab0180  r5 : c1804a80  r4 : c8aa8008
  r3 : c1a5661c  r2 : 00000000  r1 : 6b6b6b6b  r0 : c139bf48
  .....
  Register r6 information: slab kmalloc-64 start c8ab0140 data offset 64 pointer offset 0 size 64 allocated at meminfo_proc_show+0x40/0x4fc
      meminfo_proc_show+0x40/0x4fc
      seq_read_iter+0x18c/0x4c4
      proc_reg_read_iter+0x84/0xac
      generic_file_splice_read+0xe8/0x17c
      splice_direct_to_actor+0xb8/0x290
      do_splice_direct+0xa0/0xe0
      do_sendfile+0x2d0/0x438
      sys_sendfile64+0x12c/0x140
      ret_fast_syscall+0x0/0x58
      0xbeeacde4
   Free path:
      meminfo_proc_show+0x5c/0x4fc
      seq_read_iter+0x18c/0x4c4
      proc_reg_read_iter+0x84/0xac
      generic_file_splice_read+0xe8/0x17c
      splice_direct_to_actor+0xb8/0x290
      do_splice_direct+0xa0/0xe0
      do_sendfile+0x2d0/0x438
      sys_sendfile64+0x12c/0x140
      ret_fast_syscall+0x0/0x58
      0xbeeacde4

Link: https://lkml.kernel.org/r/1615891032-29160-3-git-send-email-maninder1.s@samsung.com
Co-developed-by: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Vaneet Narang <v.narang@samsung.com>
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/vmalloc: remove vwrite()
David Hildenbrand [Fri, 7 May 2021 01:06:06 +0000 (18:06 -0700)]
mm/vmalloc: remove vwrite()

The last user (/dev/kmem) is gone. Let's drop it.

Link: https://lkml.kernel.org/r/20210324102351.6932-4-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: huang ying <huang.ying.caritas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm: remove xlate_dev_kmem_ptr()
David Hildenbrand [Fri, 7 May 2021 01:06:01 +0000 (18:06 -0700)]
mm: remove xlate_dev_kmem_ptr()

Since /dev/kmem has been removed, let's remove the xlate_dev_kmem_ptr()
leftovers.

Link: https://lkml.kernel.org/r/20210324102351.6932-3-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Palmer Dabbelt <palmerdabbelt@google.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Niklas Schnelle <schnelle@linux.ibm.com>
Cc: Pierre Morel <pmorel@linux.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agodrivers/char: remove /dev/kmem for good
David Hildenbrand [Fri, 7 May 2021 01:05:55 +0000 (18:05 -0700)]
drivers/char: remove /dev/kmem for good

Patch series "drivers/char: remove /dev/kmem for good".

Exploring /dev/kmem and /dev/mem in the context of memory hot(un)plug and
memory ballooning, I started questioning the existence of /dev/kmem.

Comparing it with the /proc/kcore implementation, it does not seem to be
able to deal with things like

a) Pages unmapped from the direct mapping (e.g., to be used by secretmem)
  -> kern_addr_valid(). virt_addr_valid() is not sufficient.

b) Special cases like gart aperture memory that is not to be touched
  -> mem_pfn_is_ram()

Unless I am missing something, it's at least broken in some cases and might
fault/crash the machine.

Looks like its existence has been questioned before in 2005 and 2010 [1],
after ~11 additional years, it might make sense to revive the discussion.

CONFIG_DEVKMEM is only enabled in a single defconfig (on purpose or by
mistake?).  All distributions disable it: in Ubuntu it has been disabled
for more than 10 years, in Debian since 2.6.31, in Fedora at least
starting with FC3, in RHEL starting with RHEL4, in SUSE starting from
15sp2, and OpenSUSE has it disabled as well.

1) /dev/kmem was popular for rootkits [2] before it got disabled
   basically everywhere. Ubuntu documents [3] "There is no modern user of
   /dev/kmem any more beyond attackers using it to load kernel rootkits.".
   RHEL documents in a BZ [5] "it served no practical purpose other than to
   serve as a potential security problem or to enable binary module drivers
   to access structures/functions they shouldn't be touching"

2) /proc/kcore is a decent interface to have a controlled way to read
   kernel memory for debugging puposes. (will need some extensions to
   deal with memory offlining/unplug, memory ballooning, and poisoned
   pages, though)

3) It might be useful for corner case debugging [1]. KDB/KGDB might be a
   better fit, especially, to write random memory; harder to shoot
   yourself into the foot.

4) "Kernel Memory Editor" [4] hasn't seen any updates since 2000 and seems
   to be incompatible with 64bit [1]. For educational purposes,
   /proc/kcore might be used to monitor value updates -- or older
   kernels can be used.

5) It's broken on arm64, and therefore, completely disabled there.

Looks like it's essentially unused and has been replaced by better
suited interfaces for individual tasks (/proc/kcore, KDB/KGDB). Let's
just remove it.

[1] https://lwn.net/Articles/147901/
[2] https://www.linuxjournal.com/article/10505
[3] https://wiki.ubuntu.com/Security/Features#A.2Fdev.2Fkmem_disabled
[4] https://sourceforge.net/projects/kme/
[5] https://bugzilla.redhat.com/show_bug.cgi?id=154796

Link: https://lkml.kernel.org/r/20210324102351.6932-1-david@redhat.com
Link: https://lkml.kernel.org/r/20210324102351.6932-2-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Alexander A. Klimov" <grandmaster@al2klimov.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Chris Zankel <chris@zankel.net>
Cc: Corentin Labbe <clabbe@baylibre.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Gregory Clement <gregory.clement@bootlin.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Hillf Danton <hdanton@sina.com>
Cc: huang ying <huang.ying.caritas@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: James Troup <james.troup@canonical.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kairui Song <kasong@redhat.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Niklas Schnelle <schnelle@linux.ibm.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: openrisc@lists.librecores.org
Cc: Palmer Dabbelt <palmerdabbelt@google.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "Pavel Machek (CIP)" <pavel@denx.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Pierre Morel <pmorel@linux.ibm.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Rich Felker <dalias@libc.org>
Cc: Robert Richter <rric@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: sparclinux@vger.kernel.org
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Theodore Dubois <tblodt@icloud.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: William Cohen <wcohen@redhat.com>
Cc: Xiaoming Ni <nixiaoming@huawei.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm: fix some typos and code style problems
Shijie Luo [Fri, 7 May 2021 01:05:51 +0000 (18:05 -0700)]
mm: fix some typos and code style problems

fix some typos and code style problems in mm.

gfp.h: s/MAXNODES/MAX_NUMNODES
mmzone.h: s/then/than
rmap.c: s/__vma_split()/__vma_adjust()
swap.c: s/__mod_zone_page_stat/__mod_zone_page_state, s/is is/is
swap_state.c: s/whoes/whose
z3fold.c: code style problem fix in z3fold_unregister_migration
zsmalloc.c: s/of/or, s/give/given

Link: https://lkml.kernel.org/r/20210419083057.64820-1-luoshijie1@huawei.com
Signed-off-by: Shijie Luo <luoshijie1@huawei.com>
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoipc/sem.c: mundane typo fixes
Bhaskar Chowdhury [Fri, 7 May 2021 01:05:48 +0000 (18:05 -0700)]
ipc/sem.c: mundane typo fixes

s/runtine/runtime/
s/AQUIRE/ACQUIRE/
s/seperately/separately/
s/wont/won\'t/
s/succesfull/successful/

Link: https://lkml.kernel.org/r/20210326022240.26375-1-unixbhaskar@gmail.com
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>