Liu Bo [Tue, 28 Jun 2016 20:44:38 +0000 (13:44 -0700)]
Btrfs: fix double free of fs root
I got this warning while mounting a btrfs image,
[ 3020.509606] ------------[ cut here ]------------
[ 3020.510107] WARNING: CPU: 3 PID: 5581 at lib/idr.c:1051 ida_remove+0xca/0x190
[ 3020.510853] ida_remove called for id=42 which is not allocated.
[ 3020.511466] Modules linked in:
[ 3020.511802] CPU: 3 PID: 5581 Comm: mount Not tainted 4.7.0-rc5+ #274
[ 3020.512438] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.2-20150714_191134- 04/01/2014
[ 3020.513385]
0000000000000286 0000000021295d86 ffff88006c66b8f0 ffffffff8182ba5a
[ 3020.514153]
0000000000000000 0000000000000009 ffff88006c66b930 ffffffff810e0ed7
[ 3020.514928]
0000041b00000000 ffffffff8289a8c0 ffff88007f437880 0000000000000000
[ 3020.515717] Call Trace:
[ 3020.515965] [<
ffffffff8182ba5a>] dump_stack+0xc9/0x13f
[ 3020.516487] [<
ffffffff810e0ed7>] __warn+0x147/0x160
[ 3020.517005] [<
ffffffff810e0f4f>] warn_slowpath_fmt+0x5f/0x80
[ 3020.517572] [<
ffffffff8182e6ca>] ida_remove+0xca/0x190
[ 3020.518075] [<
ffffffff813a2bcc>] free_anon_bdev+0x2c/0x60
[ 3020.518609] [<
ffffffff81657a9f>] free_fs_root+0x13f/0x160
[ 3020.519138] [<
ffffffff8165c679>] btrfs_get_fs_root+0x379/0x3d0
[ 3020.519710] [<
ffffffff81e6e975>] ? __mutex_unlock_slowpath+0x155/0x2c0
[ 3020.520366] [<
ffffffff816615b1>] open_ctree+0x2e91/0x3200
[ 3020.520965] [<
ffffffff8161ede2>] btrfs_mount+0x1322/0x15b0
[ 3020.521536] [<
ffffffff81e60e74>] ? kmemleak_alloc_percpu+0x44/0x170
[ 3020.522167] [<
ffffffff8115f5e1>] ? lockdep_init_map+0x61/0x210
[ 3020.522780] [<
ffffffff813a4f59>] mount_fs+0x49/0x2c0
[ 3020.523305] [<
ffffffff813d840c>] vfs_kern_mount+0xac/0x1b0
[ 3020.523872] [<
ffffffff8161dee1>] btrfs_mount+0x421/0x15b0
[ 3020.524402] [<
ffffffff81e60e74>] ? kmemleak_alloc_percpu+0x44/0x170
[ 3020.525045] [<
ffffffff8115f5e1>] ? lockdep_init_map+0x61/0x210
[ 3020.525657] [<
ffffffff8115f5e1>] ? lockdep_init_map+0x61/0x210
[ 3020.526289] [<
ffffffff813a4f59>] mount_fs+0x49/0x2c0
[ 3020.526803] [<
ffffffff813d840c>] vfs_kern_mount+0xac/0x1b0
[ 3020.527365] [<
ffffffff813dc27a>] do_mount+0x41a/0x1770
[ 3020.527899] [<
ffffffff812e800d>] ? strndup_user+0x6d/0xc0
[ 3020.528447] [<
ffffffff812e7f68>] ? memdup_user+0x78/0xb0
[ 3020.528987] [<
ffffffff813ddad0>] SyS_mount+0x150/0x160
[ 3020.529493] [<
ffffffff81e72b7c>] entry_SYSCALL_64_fastpath+0x1f/0xbd
It turns out that we free fs root twice, btrfs_init_fs_root() calls
free_anon_bdev(root->anon_dev) and later then btrfs_get_fs_root() cals
free_fs_root which does another free_anon_bdev() and it ends up with the
above warning.
Instead of reset root->anon_dev to 0 after free_anon_bdev(), we can let
btrfs_init_fs_root() return directly since its callers have already done
the free job by calling free_fs_root().
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Reviewed-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Liu Bo [Thu, 23 Jun 2016 23:32:45 +0000 (16:32 -0700)]
Btrfs: error out if generic_bin_search get invalid arguments
With btrfs-corrupt-block, one can set btree node/leaf's field, if
we assign a negative value to node/leaf, we can get various hangs,
eg. if extent_root's nritems is -2ULL, then we get stuck in
btrfs_read_block_groups() because it has a while loop and
btrfs_search_slot() on extent_root will always return the first
child.
This lets us know what's happening and returns a EINVAL to callers
instead of returning the first item.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Liu Bo [Thu, 23 Jun 2016 01:31:27 +0000 (18:31 -0700)]
Btrfs: check inconsistence between chunk and block group
With btrfs-corrupt-block, one can drop one chunk item and mounting
will end up with a panic in btrfs_full_stripe_len().
This doesn't not remove the BUG_ON, but instead checks it a bit
earlier when we find the block group item.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Wang Xiaoguang [Tue, 21 Jun 2016 03:12:56 +0000 (11:12 +0800)]
btrfs: add missing bytes_readonly attribute file in sysfs
Signed-off-by: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Chris Mason [Tue, 19 Jul 2016 12:52:36 +0000 (05:52 -0700)]
Btrfs: fix delalloc accounting after copy_from_user faults
Commit
56244ef151c3cd11 was almost but not quite enough to fix the
reservation math after btrfs_copy_from_user returned partial copies.
Some users are still seeing warnings in btrfs_destroy_inode, and with a
long enough test run I'm able to trigger them as well.
This patch fixes the accounting math again, bringing it much closer to
the way it was before the sectorsize conversion Chandan did. The
problem is accounting for the offset into the page/sector when we do a
partial copy. This one just uses the dirty_sectors variable which
should already be updated properly.
Signed-off-by: Chris Mason <clm@fb.com>
cc: stable@vger.kernel.org # v4.6+
Josef Bacik [Wed, 20 Jul 2016 23:48:45 +0000 (16:48 -0700)]
Btrfs: avoid deadlocks during reservations in btrfs_truncate_block
The new enospc code makes it possible to deadlock if we don't use
FLUSH_LIMIT during reservations inside a transaction. This enforces
the correct flush type to avoid both deadlocks and assertions
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Chris Mason [Wed, 20 Jul 2016 18:46:52 +0000 (11:46 -0700)]
Merge branch 'kdave-part1-enospc' into for-linus-4.8
Josef Bacik [Fri, 27 May 2016 17:24:13 +0000 (13:24 -0400)]
Btrfs: use FLUSH_LIMIT for relocation in reserve_metadata_bytes
We used to allow you to set FLUSH_ALL and then just wouldn't do things like
commit transactions or wait on ordered extents if we noticed you were in a
transaction. However now that all the flushing for FLUSH_ALL is asynchronous
we've lost the ability to tell, and we could end up deadlocking. So instead use
FLUSH_LIMIT in reserve_metadata_bytes in relocation and then return -EAGAIN if
we error out to preserve the previous behavior. I've also added an ASSERT() to
catch anybody else who tries to do this. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 27 May 2016 17:08:26 +0000 (13:08 -0400)]
Btrfs: fill relocation block rsv after allocation
Since we set the reloc control before we've reserved our space for relocation we
could race with a root being dirtied and not actually have space to do our init
reloc root. So once we've allocated it and set it up go ahead and make our
reservation before setting the relocate control, that way anybody who tries to
do the reloc root init has space to use. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 27 May 2016 17:01:08 +0000 (13:01 -0400)]
Btrfs: always use trans->block_rsv for orphans
This is the case all the time anyway except for relocation which could be doing
a reloc root for a non ref counted root, in which case we'd end up with some
random block rsv rather than the one we have our reservation in. If there isn't
enough space in the block rsv we are trying to steal from we'll BUG() because we
expect there to be space for the orphan to make its reservation. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 27 May 2016 16:58:35 +0000 (12:58 -0400)]
Btrfs: change how we calculate the global block rsv
Traditionally we've calculated the global block rsv by guessing how much of the
metadata used amount was the extent tree, and then taking the data size and
figuring out how large the csum tree would have to be to hold that much data.
This is imprecise and falls down on MIXED file systems as we can't trust the
data used amount. This resulted in failures for xfstests generic/333 because it
creates lots of clones, which explodes out the extent tree. Our global reserve
calculations were woefully inaccurate in this case which meant we got into a
situation where we did not have enough reserved to do our work.
We know we only use the global block rsv for the extent, csum, and root trees,
so just get the bytes used for these trees and use that as the basis of our
global reserve. Since these are not reference counted trees the bytes_used
value will be accurate. This fixed the transaction aborts seen with
generic/333. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Mon, 25 Apr 2016 13:58:18 +0000 (09:58 -0400)]
Btrfs: use root when checking need_async_flush
Instead of doing fs_info->fs_root in need_async_flush, which may not be set
during recovery when mounting, just pass the root itself in, which makes more
sense as thats what btrfs_calc_reclaim_metadata_size takes.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Reported-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:59 +0000 (13:25 -0400)]
Btrfs: don't bother kicking async if there's nothing to reclaim
We do this check when we start the async reclaimer thread, might as well check
before we kick it off to save us some cycles. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:58 +0000 (13:25 -0400)]
Btrfs: fix release reserved extents trace points
We were doing trace_btrfs_release_reserved_extent() in pin_down_extent which
isn't quite right because we will go through and free that extent later when we
unpin, so it messes up apps that are accounting for the reservation space. We
were also unconditionally doing it in __btrfs_free_reserved_extent(), when we
only actually free the reservation instead of pinning the extent. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:57 +0000 (13:25 -0400)]
Btrfs: add fsid to some tracepoints
When tracing enospc problems on a box with multiple file systems mounted I need
to be able to differentiate between the two file systems. Most of the important
trace points I'm looking at already have an fsid, but the reserved extent trace
points do not, so add that to make it possible to figure out which trace point
belongs to which file system. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:56 +0000 (13:25 -0400)]
Btrfs: add tracepoints for flush events
We want to track when we're triggering flushing from our reservation code and
what flushing is being done when we start flushing. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:55 +0000 (13:25 -0400)]
Btrfs: fix delalloc reservation amount tracepoint
We can sometimes drop the reservation we had for our inode, so we need to remove
that amount from to_reserve so that our tracepoint reports a valid amount of
space.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:54 +0000 (13:25 -0400)]
Btrfs: trace pinned extents
Pinned extents are an important metric to keep track of for enospc.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Tue, 17 May 2016 17:30:55 +0000 (13:30 -0400)]
Btrfs: introduce ticketed enospc infrastructure
Our enospc flushing sucks. It is born from a time where we were early
enospc'ing constantly because multiple threads would race in for the same
reservation and randomly starve other ones out. So I came up with this solution
to block any other reservations from happening while one guy tried to flush
stuff to satisfy his reservation. This gives us pretty good correctness, but
completely crap latency.
The solution I've come up with is ticketed reservations. Basically we try to
make our reservation, and if we can't we put a ticket on a list in order and
kick off an async flusher thread. This async flusher thread does the same old
flushing we always did, just asynchronously. As space is freed and added back
to the space_info it checks and sees if we have any tickets that need
satisfying, and adds space to the tickets and wakes up anything we've satisfied.
Once the flusher thread stops making progress it wakes up all the current
tickets and tells them to take a hike.
There is a priority list for things that can't flush, since the async flusher
could do anything we need to avoid deadlocks. These guys get priority for
having their reservation made, and will still do manual flushing themselves in
case the async flusher isn't running.
This patch gives us significantly better latencies. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:52 +0000 (13:25 -0400)]
Btrfs: add tracepoint for adding block groups
I'm writing a tool to visualize the enospc system inside btrfs, I need this
tracepoint in order to keep track of the block groups in the system. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:51 +0000 (13:25 -0400)]
Btrfs: warn_on for unaccounted spaces
These were hidden behind enospc_debug, which isn't helpful as they indicate
actual bugs, unlike the rest of the enospc_debug stuff which is really debug
information. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:50 +0000 (13:25 -0400)]
Btrfs: change delayed reservation fallback behavior
We reserve space for the inode update when we first reserve space for writing to
a file. However there are lots of ways that we can use this reservation and not
have it for subsequent ordered extents. Previously we'd fall through and try to
reserve metadata bytes for this, then we'd just steal the full reservation from
the delalloc_block_rsv, and if that didn't have enough space we'd steal the full
reservation from the global reserve. The problem with this is we can easily
just return ENOSPC and fallback to updating the inode item directly. In the
worst case (assuming 4k nodesize) we'd steal 64kib from the global reserve if we
fall all the way through, however if we just fallback and update the inode
directly we'd only steal 4k * BTRFS_PATH_MAX in the worst case which is 32kib.
We would have also just added the extent item for the inode so we likely will
have already cow'ed down most of the way to the leaf containing the inode item,
so we are more often than not only need one or two nodesize's worth of
reservations. Given the reservation for the extent itself is also a worst case
we will likely already have space to cover the inode update.
This change will make us behave better in the theoretical worst case, and much
better in the case that we don't have our reservation and cannot reserve more
metadata. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:49 +0000 (13:25 -0400)]
Btrfs: always reserve metadata for delalloc extents
There are a few races in the metadata reservation stuff. First we add the bytes
to the block_rsv well after we've set the bit on the inode saying that we have
space for it and after we've reserved the bytes. So use the normal
btrfs_block_rsv_add helper for this case. Secondly we can flush delalloc
extents when we try to reserve space for our write, which means that we could
have used up the space for the inode and we wouldn't know because we only check
before the reservation. So instead make sure we are always reserving space for
the inode update, and then if we don't need it release those bytes afterward.
Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:48 +0000 (13:25 -0400)]
Btrfs: fix callers of btrfs_block_rsv_migrate
So btrfs_block_rsv_migrate just unconditionally calls block_rsv_migrate_bytes.
Not only this but it unconditionally changes the size of the block_rsv. This
isn't a bug strictly speaking, but it makes truncate block rsv's look funny
because every time we migrate bytes over its size grows, even though we only
want it to be a specific size. So collapse this into one function that takes an
update_size argument and make truncate and evict not update the size for
consistency sake. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 25 Mar 2016 17:25:47 +0000 (13:25 -0400)]
Btrfs: add bytes_readonly to the spaceinfo at once
For some reason we're adding bytes_readonly to the space info after we update
the space info with the block group info. This creates a tiny race where we
could over-reserve space because we haven't yet taken out the bytes_readonly
bit. Since we already know this information at the time we call
update_space_info, just pass it along so it can be updated all at once. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Linus Torvalds [Mon, 4 Jul 2016 06:01:00 +0000 (23:01 -0700)]
Linux 4.7-rc6
Linus Torvalds [Sun, 3 Jul 2016 19:02:00 +0000 (12:02 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse
Pull fuse fix from Miklos Szeredi:
"This makes sure userspace filesystems are not broken by the parallel
lookups and readdir feature"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: serialize dirops by default
Linus Torvalds [Sun, 3 Jul 2016 18:57:09 +0000 (11:57 -0700)]
Merge branch 'overlayfs-linus' of git://git./linux/kernel/git/mszeredi/vfs
Pull overlayfs fixes from Miklos Szeredi:
"This contains fixes for a dentry leak, a regression in 4.6 noticed by
Docker users and missing write access checking in truncate"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: warn instead of error if d_type is not supported
ovl: get_write_access() in truncate
ovl: fix dentry leak for default_permissions
Vivek Goyal [Fri, 1 Jul 2016 14:02:44 +0000 (10:02 -0400)]
ovl: warn instead of error if d_type is not supported
overlay needs underlying fs to support d_type. Recently I put in a
patch in to detect this condition and started failing mount if
underlying fs did not support d_type.
But this breaks existing configurations over kernel upgrade. Those who
are running docker (partially broken configuration) with xfs not
supporting d_type, are surprised that after kernel upgrade docker does
not run anymore.
https://github.com/docker/docker/issues/22937#issuecomment-
229881315
So instead of erroring out, detect broken configuration and warn
about it. This should allow existing docker setups to continue
working after kernel upgrade.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes:
45aebeaf4f67 ("ovl: Ensure upper filesystem supports d_type")
Cc: <stable@vger.kernel.org> 4.6
Linus Torvalds [Sun, 3 Jul 2016 02:10:21 +0000 (19:10 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull MIPS fix from Ralf Baechle:
"Only a single fix for 4.7 pending at this point. It fixes an issue
that may lead to corruption of the cache mode bits in the page table"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Fix possible corruption of cache mode by mprotect.
Linus Torvalds [Sun, 3 Jul 2016 00:47:54 +0000 (17:47 -0700)]
Merge tag 'powerpc-4.7-5' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- tm: Always reclaim in start_thread() for exec() class syscalls from
Cyril Bur
- tm: Avoid SLB faults in treclaim/trecheckpoint when RI=0 from Michael
Neuling
- eeh: Fix wrong argument passed to eeh_rmv_device() from Gavin Shan
- Initialise pci_io_base as early as possible from Darren Stevens
* tag 'powerpc-4.7-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Initialise pci_io_base as early as possible
powerpc/tm: Avoid SLB faults in treclaim/trecheckpoint when RI=0
powerpc/eeh: Fix wrong argument passed to eeh_rmv_device()
powerpc/tm: Always reclaim in start_thread() for exec() class syscalls
Linus Torvalds [Sat, 2 Jul 2016 16:41:28 +0000 (09:41 -0700)]
Merge tag 'drm-fixes-for-v4.7-rc6' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes frlm Dave Airlie:
"Just some AMD and Intel fixes, the AMD ones are further production
Polaris fixes, and the Intel ones fix some early timeouts, some PCI ID
changes and a couple of other fixes.
Still a bit Internet challenged here, hopefully end of next week will
solve it"
* tag 'drm-fixes-for-v4.7-rc6' of git://people.freedesktop.org/~airlied/linux:
drm/i915: Fix missing unlock on error in i915_ppgtt_info()
drm/amd/powerplay: workaround for UVD clock issue
drm/amdgpu: add ACLK_CNTL setting for polaris10
drm/amd/powerplay: fix issue uvd dpm can't enabled on Polaris11.
drm/amd/powerplay: Workaround for Memory EDC Error on Polaris10.
drm/i915: Removing PCI IDs that are no longer listed as Kabylake.
drm/i915: Add more Kabylake PCI IDs.
drm/i915: Avoid early timeout during AUX transfers
drm/i915/hsw: Avoid early timeout during LCPLL disable/restore
drm/i915/lpt: Avoid early timeout during FDI PHY reset
drm/i915/bxt: Avoid early timeout during PLL enable
drm/i915: Refresh cached DP port register value on resume
drm/amd/powerplay: Update CKS on/ CKS off voltage offset calculation
drm/amd/powerplay: disable FFC.
drm/amd/powerplay: add some definition for FFC feature on polaris.
Linus Torvalds [Sat, 2 Jul 2016 16:40:11 +0000 (09:40 -0700)]
Merge tag 'spi-fix-v4.7-rc5' of git://git./linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few small driver-specific fixes for SPI, all in the normal important
if you hit them category especially the rockchip driver fix which
addresses a race which has been exposed more frequently with some
recent performance improvements"
* tag 'spi-fix-v4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: sunxi: fix transfer timeout
spi: sun4i: fix FIFO limit
spi: rockchip: Signal unfinished DMA transfers
spi: spi-ti-qspi: Suspend the queue before removing the device
Linus Torvalds [Sat, 2 Jul 2016 16:39:03 +0000 (09:39 -0700)]
Merge tag 'regulator-fix-v4.7-rc5' of git://git./linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"Two small fixes for the regulator subsystem - one fixing a crash with
one of the devices supported by the max77620 driver, another fixing
startup for the anatop regulator when it starts up with the regulator
in bypass mode"
* tag 'regulator-fix-v4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: max77620: check for valid regulator info
regulator: anatop: allow regulator to be in bypass mode
Linus Torvalds [Sat, 2 Jul 2016 16:36:49 +0000 (09:36 -0700)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A small fix for the newly added oxnas clk driver and a handful of
rockchip clk driver fixes for newly added rk3399 support"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: Fix return value check in oxnas_stdclk_probe()
clk: rockchip: release io resource when failing to init clk on rk3399
clk: rockchip: fix cpuclk registration error handling
clk: rockchip: Revert "clk: rockchip: reset init state before mmc card initialization"
clk: rockchip: fix incorrect parent for rk3399's {c,g}pll_aclk_perihp_src
clk: rockchip: mark rk3399 GIC clocks as critical
clk: rockchip: initialize flags of clk_init_data in mmc-phase clock
Dave Airlie [Sat, 2 Jul 2016 05:50:41 +0000 (15:50 +1000)]
Merge tag 'drm-intel-fixes-2016-06-30' of git://anongit.freedesktop.org/drm-intel into drm-fixes
here's a batch of i915 fixes for 4.7.
* tag 'drm-intel-fixes-2016-06-30' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Fix missing unlock on error in i915_ppgtt_info()
drm/i915: Removing PCI IDs that are no longer listed as Kabylake.
drm/i915: Add more Kabylake PCI IDs.
drm/i915: Avoid early timeout during AUX transfers
drm/i915/hsw: Avoid early timeout during LCPLL disable/restore
drm/i915/lpt: Avoid early timeout during FDI PHY reset
drm/i915/bxt: Avoid early timeout during PLL enable
drm/i915: Refresh cached DP port register value on resume
Dave Airlie [Sat, 2 Jul 2016 05:48:33 +0000 (15:48 +1000)]
Merge branch 'drm-fixes-4.7' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Just a few more late fixes for Polaris cards.
* 'drm-fixes-4.7' of git://people.freedesktop.org/~agd5f/linux:
drm/amd/powerplay: workaround for UVD clock issue
drm/amdgpu: add ACLK_CNTL setting for polaris10
drm/amd/powerplay: fix issue uvd dpm can't enabled on Polaris11.
drm/amd/powerplay: Workaround for Memory EDC Error on Polaris10.
drm/amd/powerplay: Update CKS on/ CKS off voltage offset calculation
drm/amd/powerplay: disable FFC.
drm/amd/powerplay: add some definition for FFC feature on polaris.
Ralf Baechle [Fri, 1 Jul 2016 13:01:01 +0000 (15:01 +0200)]
MIPS: Fix possible corruption of cache mode by mprotect.
The following testcase may result in a page table entries with a invalid
CCA field being generated:
static void *bindstack;
static int sysrqfd;
static void protect_low(int protect)
{
mprotect(bindstack, BINDSTACK_SIZE, protect);
}
static void sigbus_handler(int signal, siginfo_t * info, void *context)
{
void *addr = info->si_addr;
write(sysrqfd, "x", 1);
printf("sigbus, fault address %p (should not happen, but might)\n",
addr);
abort();
}
static void run_bind_test(void)
{
unsigned int *p = bindstack;
p[0] = 0xf001f001;
write(sysrqfd, "x", 1);
/* Set trap on access to p[0] */
protect_low(PROT_NONE);
write(sysrqfd, "x", 1);
/* Clear trap on access to p[0] */
protect_low(PROT_READ | PROT_WRITE | PROT_EXEC);
write(sysrqfd, "x", 1);
/* Check the contents of p[0] */
if (p[0] != 0xf001f001) {
write(sysrqfd, "x", 1);
/* Reached, but shouldn't be */
printf("badness, shouldn't happen but does\n");
abort();
}
}
int main(void)
{
struct sigaction sa;
sysrqfd = open("/proc/sysrq-trigger", O_WRONLY);
if (sigprocmask(SIG_BLOCK, NULL, &sa.sa_mask)) {
perror("sigprocmask");
return 0;
}
sa.sa_sigaction = sigbus_handler;
sa.sa_flags = SA_SIGINFO | SA_NODEFER | SA_RESTART;
if (sigaction(SIGBUS, &sa, NULL)) {
perror("sigaction");
return 0;
}
bindstack = mmap(NULL,
BINDSTACK_SIZE,
PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (bindstack == MAP_FAILED) {
perror("mmap bindstack");
return 0;
}
printf("bindstack: %p\n", bindstack);
run_bind_test();
printf("done\n");
return 0;
}
There are multiple ingredients for this:
1) PAGE_NONE is defined to _CACHE_CACHABLE_NONCOHERENT, which is CCA 3
on all platforms except SB1 where it's CCA 5.
2) _page_cachable_default must have bits set which are not set
_CACHE_CACHABLE_NONCOHERENT.
3) Either the defective version of pte_modify for XPA or the standard
version must be in used. However pte_modify for the 36 bit address
space support is no affected.
In that case additional bits in the final CCA mode may generate an invalid
value for the CCA field. On the R10000 system where this was tracked
down for example a CCA 7 has been observed, which is Uncached Accelerated.
Fixed by:
1) Using the proper CCA mode for PAGE_NONE just like for all the other
PAGE_* pte/pmd bits.
2) Fix the two affected variants of pte_modify.
Further code inspection also shows the same issue to exist in pmd_modify
which would affect huge page systems.
Issue in pte_modify tracked down by Alastair Bridgewater, PAGE_NONE
and pmd_modify issue found by me.
The history of this goes back beyond Linus' git history. Chris Dearman's
commit
351336929ccf222ae38ff0cb7a8dd5fd5c6236a0 ("[MIPS] Allow setting of
the cache attribute at run time.") missed the opportunity to fix this
but it was originally introduced in lmo commit
d523832cf12007b3242e50bb77d0c9e63e0b6518 ("Missing from last commit.")
and
32cc38229ac7538f2346918a09e75413e8861f87 ("New configuration option
CONFIG_MIPS_UNCACHED.")
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Alastair Bridgewater <alastair.bridgewater@gmail.com>
Linus Torvalds [Fri, 1 Jul 2016 22:31:48 +0000 (15:31 -0700)]
Merge tag 'acpi-4.7-rc6' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Fix an expression in the ACPI PCI IRQ management code added by a
recent commit that overlooked missing parens in it, so the result of
the computation is incorrect in some cases (Sinan Kaya)"
* tag 'acpi-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI,PCI,IRQ: correct operator precedence
Linus Torvalds [Fri, 1 Jul 2016 22:28:22 +0000 (15:28 -0700)]
Merge tag 'pm-4.7-rc6' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Three cpufreq fixes, one in the core (stable-candidate) and two in
drivers (intel_pstate and cpufreq-dt).
Specifics:
- Fix a recent intel_pstate regression that caused the number of
wakeups to increase significantly on an idle system in some cases
due to excessive synchronize_sched() invocations (Rafael Wysocki).
- Fix unnecessary invocations of WARN_ON() in the cpufreq core after
cpufreq has been suspended introduced during the 4.6 cycla (Rafael
Wysocki).
- Fix an error code path in the cpufreq-dt-platdev driver that
forgets to drop a reference to a DT node (Masahiro Yamada)"
* tag 'pm-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: Avoid false-positive WARN_ON()s in cpufreq_update_policy()
cpufreq: dt: call of_node_put() before error out
intel_pstate: Do not clear utilization update hooks on policy changes
Linus Torvalds [Fri, 1 Jul 2016 22:20:11 +0000 (15:20 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"Tmpfs readdir throughput regression fix (this cycle) + some -stable
fodder all over the place.
One missing bit is Miklos' tonight locks.c fix - NFS folks had already
grabbed that one by the time I woke up ;-)"
[ The locks.c fix came through the nfsd tree just moments ago ]
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
namespace: update event counter when umounting a deleted dentry
9p: use file_dentry()
ceph: fix d_obtain_alias() misuses
lockless next_positive()
libfs.c: new helper - next_positive()
dcache_{readdir,dir_lseek}(): don't bother with nested ->d_lock
Linus Torvalds [Fri, 1 Jul 2016 22:18:49 +0000 (15:18 -0700)]
Merge tag 'nfsd-4.7-3' of git://linux-nfs.org/~bfields/linux
Pull lockd/locks fixes from Bruce Fields:
"One fix for lockd soft lookups in an error path, and one fix for file
leases on overlayfs"
* tag 'nfsd-4.7-3' of git://linux-nfs.org/~bfields/linux:
locks: use file_inode()
lockd: unregister notifier blocks if the service fails to come up completely
Linus Torvalds [Fri, 1 Jul 2016 22:17:16 +0000 (15:17 -0700)]
Merge tag 'mfd-fixes-4.7.1' of git://git./linux/kernel/git/lee/mfd
Pull more MFD fixes from Lee Jones:
"Apologies for missing these from the first pull request.
Final patches fixing Reset API change"
* tag 'mfd-fixes-4.7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
usb: dwc3: st: Use explicit reset_control_get_exclusive() API
phy: phy-stih407-usb: Use explicit reset_control_get_exclusive() API
phy: miphy28lp: Inform the reset framework that our reset line may be shared
Linus Torvalds [Fri, 1 Jul 2016 22:15:03 +0000 (15:15 -0700)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
"1/ Two regression fixes since v4.6: one for the byte order of a sysfs
attribute (bz121161) and another for QEMU 2.6's NVDIMM _DSM (ACPI
Device Specific Method) implementation that gets tripped up by new
auto-probing behavior in the NFIT driver.
2/ A fix tagged for -stable that stops the kernel from
clobbering/ignoring changes to the configuration of a 'pfn'
instance ("struct page" driver). For example changing the
alignment from 2M to 1G may silently revert to 2M if that value is
currently stored on media.
3/ A fix from Eric for an xfstests failure in dax. It is not
currently tagged for -stable since it requires an 8-exabyte file
system to trigger, and there appear to be no user visible side
effects"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nfit: fix format interface code byte order
dax: fix offset overflow in dax_io
acpi, nfit: fix acpi_check_dsm() vs zero functions implemented
libnvdimm, pfn, dax: fix initialization vs autodetect for mode + alignment
Linus Torvalds [Fri, 1 Jul 2016 16:21:34 +0000 (09:21 -0700)]
Merge tag 'staging-4.7-rc6' of git://git./linux/kernel/git/gregkh/staging
Pull staging and IIO fixes from Greg KH:
"Here are a few small staging and iio driver fixes for 4.7-rc6.
Nothing major here, just a number of small fixes, all have been in
linux-next for a while, and the full details are in the shortlog"
* tag 'staging-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio:ad7266: Fix probe deferral for vref
iio:ad7266: Fix support for optional regulators
iio:ad7266: Fix broken regulator error handling
iio: accel: kxsd9: fix the usage of spi_w8r8()
staging: iio: accel: fix error check
staging: iio: ad5933: fix order of cycle conditions
staging: iio: fix ad7606_spi regression
iio: inv_mpu6050: Fix use-after-free in ACPI code
Linus Torvalds [Fri, 1 Jul 2016 16:20:12 +0000 (09:20 -0700)]
Merge tag 'tty-4.7-rc6' of git://git./linux/kernel/git/gregkh/tty
Pull tty fixes from Greg KH:
"Here are two tty fixes for some reported issues. One resolves a crash
in devpts, and the other resolves a problem with the fbcon cursor
blink causing lockups.
Both have been in linux-next with no reported problems"
* tag 'tty-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
devpts: fix null pointer dereference on failed memory allocation
tty: vt: Fix soft lockup in fbcon cursor blink timer.
Linus Torvalds [Fri, 1 Jul 2016 16:18:17 +0000 (09:18 -0700)]
Merge tag 'usb-4.7-rc6' of git://git./linux/kernel/git/gregkh/usb
Pull USB and PHY fixes from Greg KH:
"Here are a number of small USB and PHY driver fixes for 4.7-rc6.
Nothing major here, all are described in the shortlog below. All have
been in linux-next with no reported issues"
* tag 'usb-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: don't free bandwidth_mutex too early
USB: EHCI: declare hostpc register as zero-length array
phy-sun4i-usb: Fix irq free conditions to match request conditions
phy: bcm-ns-usb2: checking the wrong variable
phy-sun4i-usb: fix missing __iomem *
phy: phy-sun4i-usb: Fix optional gpios failing probe
phy: rockchip-dp: fix return value check in rockchip_dp_phy_probe()
phy: rcar-gen3-usb2: fix unexpected repeat interrupts of VBUS change
usb: common: otg-fsm: add license to usb-otg-fsm
Linus Torvalds [Fri, 1 Jul 2016 16:13:31 +0000 (09:13 -0700)]
Merge tag 'iommu-fixes-v4.7-rc5' of git://git./linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
"Three fixes:
- Fix use of smp_processor_id() in preemptible code in the IOVA
allocation code. This got introduced with the scalability
improvements in this release cycle.
- A VT-d fix for out-of-bounds access of the iommu->domains array.
The bug showed during suspend/resume.
- AMD IOMMU fix to print the correct device id in the ACPI parsing
code"
* tag 'iommu-fixes-v4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/amd: Initialize devid variable before using it
iommu/vt-d: Fix overflow of iommu->domains array
iommu/iova: Disable preemption around use of this_cpu_ptr()
Mark Brown [Fri, 1 Jul 2016 16:06:48 +0000 (18:06 +0200)]
Merge remote-tracking branches 'regulator/fix/anatop' and 'regulator/fix/max77620' into regulator-linus
Miklos Szeredi [Fri, 1 Jul 2016 12:56:07 +0000 (14:56 +0200)]
locks: use file_inode()
(Another one for the f_path debacle.)
ltp fcntl33 testcase caused an Oops in selinux_file_send_sigiotask.
The reason is that generic_add_lease() used filp->f_path.dentry->inode
while all the others use file_inode(). This makes a difference for files
opened on overlayfs since the former will point to the overlay inode the
latter to the underlying inode.
So generic_add_lease() added the lease to the overlay inode and
generic_delete_lease() removed it from the underlying inode. When the file
was released the lease remained on the overlay inode's lock list, resulting
in use after free.
Reported-by: Eryu Guan <eguan@redhat.com>
Fixes:
4bacc9c9234c ("overlayfs: Make f_path always point to the overlay and f_inode to the underlay")
Cc: <stable@vger.kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Lee Jones [Tue, 28 Jun 2016 08:24:40 +0000 (09:24 +0100)]
usb: dwc3: st: Use explicit reset_control_get_exclusive() API
We're making all reset line users specify whether their lines are
shared with other IP or they operate them exclusively. In this case
the line is exclusively used only by this IP, so use the *_exclusive()
API accordingly.
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Lee Jones [Tue, 28 Jun 2016 08:33:55 +0000 (09:33 +0100)]
phy: phy-stih407-usb: Use explicit reset_control_get_exclusive() API
We're making all reset line users specify whether their lines are
shared with other IP or they operate them exclusively. In this case
the line is exclusively used only by this IP, so use the *_exclusive()
API accordingly.
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Lee Jones [Fri, 3 Jun 2016 10:44:28 +0000 (11:44 +0100)]
phy: miphy28lp: Inform the reset framework that our reset line may be shared
On the STiH410 B2120 development board the MiPHY28lp shares its reset
line with the Synopsys DWC3 SuperSpeed (SS) USB 3.0 Dual-Role-Device
(DRD). New functionality in the reset subsystems forces consumers to
be explicit when requesting shared/exclusive reset lines.
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Andrey Ulanov [Fri, 15 Apr 2016 21:24:41 +0000 (14:24 -0700)]
namespace: update event counter when umounting a deleted dentry
- m_start() in fs/namespace.c expects that ns->event is incremented each
time a mount added or removed from ns->list.
- umount_tree() removes items from the list but does not increment event
counter, expecting that it's done before the function is called.
- There are some codepaths that call umount_tree() without updating
"event" counter. e.g. from __detach_mounts().
- When this happens m_start may reuse a cached mount structure that no
longer belongs to ns->list (i.e. use after free which usually leads
to infinite loop).
This change fixes the above problem by incrementing global event counter
before invoking umount_tree().
Change-Id: I622c8e84dcb9fb63542372c5dbf0178ee86bb589
Cc: stable@vger.kernel.org
Signed-off-by: Andrey Ulanov <andreyu@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Miklos Szeredi [Wed, 29 Jun 2016 08:54:23 +0000 (10:54 +0200)]
9p: use file_dentry()
v9fs may be used as lower layer of overlayfs and accessing f_path.dentry
can lead to a crash. In this case it's a NULL pointer dereference in
p9_fid_create().
Fix by replacing direct access of file->f_path.dentry with the
file_dentry() accessor, which will always return a native object.
Reported-by: Alessio Igor Bogani <alessioigorbogani@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Tested-by: Alessio Igor Bogani <alessioigorbogani@gmail.com>
Fixes:
4bacc9c9234c ("overlayfs: Make f_path always point to the overlay and f_inode to the underlay")
Cc: <stable@vger.kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Scott Mayhew [Thu, 30 Jun 2016 14:39:32 +0000 (10:39 -0400)]
lockd: unregister notifier blocks if the service fails to come up completely
If the lockd service fails to start up then we need to be sure that the
notifier blocks are not registered, otherwise a subsequent start of the
service could cause the same notifier to be registered twice, leading to
soft lockups.
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Cc: stable@vger.kernel.org
Fixes:
0751ddf77b6a "lockd: Register callbacks on the inetaddr_chain..."
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Linus Torvalds [Thu, 30 Jun 2016 16:57:52 +0000 (09:57 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"ARM and x86 fixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: nVMX: VMX instructions: fix segment checks when L1 is in long mode.
KVM: LAPIC: cap __delay at lapic_timer_advance_ns
KVM: x86: move nsec_to_cycles from x86.c to x86.h
pvclock: Get rid of __pvclock_read_cycles in function pvclock_read_flags
pvclock: Cleanup to remove function pvclock_get_nsec_offset
pvclock: Add CPU barriers to get correct version value
KVM: arm/arm64: Stop leaking vcpu pid references
arm64: KVM: fix build with CONFIG_ARM_PMU disabled
Linus Torvalds [Thu, 30 Jun 2016 16:53:43 +0000 (09:53 -0700)]
Merge tag 'arc-4.7-rc6-fixes' of git://git./linux/kernel/git/vgupta/arc
Pull ARC fix from Vineet Gupta:
"Reinstate dwarf unwinder/loadable-modules with new gnu tools"
* tag 'arc-4.7-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
arc: unwind: warn only once if DW2_UNWIND is disabled
ARC: unwind: ensure that .debug_frame is generated (vs. .eh_frame)
Linus Torvalds [Thu, 30 Jun 2016 16:49:26 +0000 (09:49 -0700)]
Merge tag 'pwm/for-4.7-rc6' of git://git./linux/kernel/git/thierry.reding/linux-pwm
Pull pwm fixes from Thierry Reding:
"One more fix for some fallout observed after the introduction of the
atomic API"
* tag 'pwm/for-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: Fix pwm_apply_args()
Linus Torvalds [Thu, 30 Jun 2016 16:44:34 +0000 (09:44 -0700)]
Merge tag 'mfd-fixes-4.7' of git://git./linux/kernel/git/lee/mfd
Pull MFD fixes from Lee Jones:
"Contained are some standard fixes and unusually an extension to the
Reset API. Some of those changes are required to fix a bug introduced
in -rc1, which introduces extra 'reset line checks' i.e. whether the
line is shared or not. If a line is shared and the new *_shared() API
is not used, the request fails with an error. This breaks USB in v4.7
for ST's platforms.
Admittedly, there are some patches contained in our (MFD/Reset)
immutable branch which are not true -fixes, but there isn't anything I
can do about that. Rest assured though, there aren't any API
'changes'. Everything is the same from the consumer's perspective.
- Use new reset_*_get_shared() variant to prevent reset line
obtainment failure (Fixes commit
0b52297f2288: "reset: Add support
for shared reset controls")
- Fix unintentional switch() fall-through into error path
- Fix uninitialised variable compiler warning"
* tag 'mfd-fixes-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
mfd: da9053: Fix compiler warning message for uninitialised variable
mfd: max77620: Fix FPS switch statements
phy: phy-stih407-usb: Inform the reset framework that our reset line may be shared
usb: dwc3: st: Inform the reset framework that our reset line may be shared
usb: host: ehci-st: Inform the reset framework that our reset line may be shared
usb: host: ohci-st: Inform the reset framework that our reset line may be shared
reset: TRIVIAL: Add line break at same place for similar APIs
reset: Supply *_shared variant calls when using *_optional APIs
reset: Supply *_shared variant calls when using of_* API
reset: Ensure drivers are explicit when requesting reset lines
reset: Reorder inline reset_control_get*() wrappers
Paolo Bonzini [Thu, 30 Jun 2016 15:11:20 +0000 (17:11 +0200)]
Merge tag 'kvm-arm-for-v4.7-rc6' of git://git./linux/kernel/git/kvmarm/kvmarm into kvm-master
KVM/ARM Fixes for v4.7-rc6:
Fixes a build issue without CONFIG_ARM_PMU and plugs pid leak on arm/arm64.
Sinan Kaya [Wed, 29 Jun 2016 08:27:38 +0000 (04:27 -0400)]
ACPI,PCI,IRQ: correct operator precedence
The omitted parenthesis prevents the addition operation when
acpi_penalize_isa_irq function is called.
Fixes:
103544d86976 (ACPI,PCI,IRQ: reduce resource requirements)
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Mark Brown [Thu, 30 Jun 2016 12:17:29 +0000 (13:17 +0100)]
Merge remote-tracking branches 'spi/fix/ep93xx', 'spi/fix/rockchip', 'spi/fix/sunxi' and 'spi/fix/ti-qspi' into spi-linus
Miklos Szeredi [Thu, 30 Jun 2016 11:10:49 +0000 (13:10 +0200)]
fuse: serialize dirops by default
Negotiate with userspace filesystems whether they support parallel readdir
and lookup. Disable parallelism by default for fear of breaking fuse
filesystems.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes:
9902af79c01a ("parallel lookups: actual switch to rwsem")
Fixes:
d9b3dbdcfd62 ("fuse: switch to ->iterate_shared()")
Wei Yongjun [Mon, 13 Jun 2016 23:42:00 +0000 (23:42 +0000)]
drm/i915: Fix missing unlock on error in i915_ppgtt_info()
Add the missing unlock before return from function i915_ppgtt_info()
in the error handling case.
Fixes:
1d2ac403ae3b(drm: Protect dev->filelist with its own mutex)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465861320-26221-1-git-send-email-weiyj_lk@163.com
(cherry picked from commit
b0212486909de4f239ca9f20d032de1b1f2dc52e)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Darren Stevens [Wed, 29 Jun 2016 20:06:28 +0000 (21:06 +0100)]
powerpc: Initialise pci_io_base as early as possible
Commit
d6a9996e84ac ("powerpc/mm: vmalloc abstraction in preparation for
radix") turned kernel memory and IO addresses from #defined constants to
variables initialised at runtime.
On PA6T (pasemi) systems the setup_arch() machine call initialises the
onboard PCI-e root-ports, and uses pci_io_base to do this, which is now
before its value has been set, resulting in a panic early in boot before
console IO is initialised.
Move the pci_io_base initialisation to the same place as vmalloc ranges
are set (hash__early_init_mmu()/radix__early_init_mmu()) - this is the
earliest possible place we can initialise it.
Fixes:
d6a9996e84ac ("powerpc/mm: vmalloc abstraction in preparation for radix")
Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Darren Stevens <darren@stevens-zone.net>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[mpe: Add #ifdef CONFIG_PCI, massage change log slightly]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Steve Twiss [Mon, 27 Jun 2016 15:06:36 +0000 (16:06 +0100)]
mfd: da9053: Fix compiler warning message for uninitialised variable
Fix compiler warning caused by an uninitialised variable inside
da9052_group_write() function. Defaulting the value to zero covers
the trivial case.
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Rhyland Klein [Thu, 12 May 2016 17:45:04 +0000 (13:45 -0400)]
mfd: max77620: Fix FPS switch statements
When configuring FPS during probe, assuming a DT node is present for
FPS, the code can run into a problem with the switch statements in
max77620_config_fps() and max77620_get_fps_period_reg_value(). Namely,
in the case of chip->chip_id == MAX77620, it will set
fps_[mix|max]_period but then fall through to the default switch case
and return -EINVAL. Returning this from max77620_config_fps() will
cause probe to fail.
Signed-off-by: Rhyland Klein <rklein@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Lee Jones [Tue, 28 Jun 2016 08:32:12 +0000 (09:32 +0100)]
phy: phy-stih407-usb: Inform the reset framework that our reset line may be shared
On the STiH410 B2120 development board the ports on the Generic PHY
share their reset lines with each other. New functionality in the
reset subsystems forces consumers to be explicit when requesting
shared/exclusive reset lines.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Lee Jones [Tue, 28 Jun 2016 08:23:58 +0000 (09:23 +0100)]
usb: dwc3: st: Inform the reset framework that our reset line may be shared
On the STiH410 B2120 development board the MiPHY28lp shares its reset
line with the Synopsys DWC3 SuperSpeed (SS) USB 3.0 Dual-Role-Device
(DRD). New functionality in the reset subsystems forces consumers to
be explicit when requesting shared/exclusive reset lines.
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Lee Jones [Mon, 6 Jun 2016 17:08:53 +0000 (18:08 +0100)]
usb: host: ehci-st: Inform the reset framework that our reset line may be shared
On the STiH410 B2120 development board the ST EHCI IP shares its reset
line with the OHCI IP. New functionality in the reset subsystems forces
consumers to be explicit when requesting shared/exclusive reset lines.
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Lee Jones [Mon, 6 Jun 2016 17:08:54 +0000 (18:08 +0100)]
usb: host: ohci-st: Inform the reset framework that our reset line may be shared
On the STiH410 B2120 development board the ST EHCI IP shares its reset
line with the OHCI IP. New functionality in the reset subsystems forces
consumers to be explicit when requesting shared/exclusive reset lines.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Linus Torvalds [Wed, 29 Jun 2016 22:30:26 +0000 (15:30 -0700)]
Merge tag 'nfs-for-4.7-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client bugfixes from Anna Schumaker:
"Stable bugfixes:
- Fix _cancel_empty_pagelist
- Fix a double page unlock
- Make nfs_atomic_open() call d_drop() on all ->open_context() errors.
- Fix another OPEN_DOWNGRADE bug
Other bugfixes:
- Ensure we handle delegation errors in nfs4_proc_layoutget()
- Layout stateids start out as being invalid
- Add sparse lock annotations for pnfs_find_alloc_layout
- Handle bad delegation stateids in nfs4_layoutget_handle_exception
- Fix up O_DIRECT results
- Fix potential use after free of state in nfs4_do_reclaim.
- Mark the layout stateid invalid when all segments are removed
- Don't let readdirplus revalidate an inode that was marked as stale
- Fix potential race in nfs_fhget()
- Fix an unused variable warning"
* tag 'nfs-for-4.7-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
NFS: Fix another OPEN_DOWNGRADE bug
make nfs_atomic_open() call d_drop() on all ->open_context() errors.
NFS: Fix an unused variable warning
NFS: Fix potential race in nfs_fhget()
NFS: Don't let readdirplus revalidate an inode that was marked as stale
NFSv4.1/pnfs: Mark the layout stateid invalid when all segments are removed
NFS: Fix a double page unlock
pnfs_nfs: fix _cancel_empty_pagelist
nfs4: Fix potential use after free of state in nfs4_do_reclaim.
NFS: Fix up O_DIRECT results
NFS/pnfs: handle bad delegation stateids in nfs4_layoutget_handle_exception
NFSv4.1/pnfs: Add sparse lock annotations for pnfs_find_alloc_layout
NFSv4.1/pnfs: Layout stateids start out as being invalid
NFSv4.1/pnfs: Ensure we handle delegation errors in nfs4_proc_layoutget()
Linus Torvalds [Wed, 29 Jun 2016 22:18:47 +0000 (15:18 -0700)]
Merge branch 'stable-4.7' of git://git.infradead.org/users/pcmoore/audit
Pull audit fixes from Paul Moore:
"Two small patches to fix audit problems in 4.7-rcX: the first fixes a
potential kref leak, the second removes some header file noise.
The first is an important bug fix that really should go in before 4.7
is released, the second is not critical, but falls into the very-nice-
to-have category so I'm including in the pull request.
Both patches are straightforward, self-contained, and pass our
testsuite without problem"
* 'stable-4.7' of git://git.infradead.org/users/pcmoore/audit:
audit: move audit_get_tty to reduce scope and kabi changes
audit: move calcs after alloc and check when logging set loginuid
Greg Kroah-Hartman [Wed, 29 Jun 2016 20:53:31 +0000 (13:53 -0700)]
Merge tag 'iio-fixes-for-4.7c' of git://git./linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Third set of fixes for IIO in the 4.7 cycle.
A couple of really old bugs and the results of Mark taking a close look at
some nasty regulator handling.
* ad7266
- Fix broken regulator handling that won't play well with dummy regulators.
- Correctly handle and optional regulator.
- Fix probe deferral for the vref regulator.
* kxsd9
- Fix a wrong error check that leads to an inability to write or read
the scale.
* sca3000
- Fix a wrong error check that leads to an inability to read back the
sampling frequency.
Lee Jones [Mon, 6 Jun 2016 15:56:53 +0000 (16:56 +0100)]
reset: TRIVIAL: Add line break at same place for similar APIs
Standardise the way inline functions:
devm_reset_control_get_shared_by_index
devm_reset_control_get_exclusive_by_index
... are formatted.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Lee Jones [Mon, 6 Jun 2016 15:56:52 +0000 (16:56 +0100)]
reset: Supply *_shared variant calls when using *_optional APIs
Consumers need to be able to specify whether they are requesting an
'exclusive' or 'shared' reset line no matter which API (of_*, devm_*,
etc) they are using. This change allows users of the optional_* API
in particular to specify that their request is for a 'shared' line.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Lee Jones [Mon, 6 Jun 2016 15:56:51 +0000 (16:56 +0100)]
reset: Supply *_shared variant calls when using of_* API
Consumers need to be able to specify whether they are requesting an
'exclusive' or 'shared' reset line no matter which API (of_*, devm_*,
etc) they are using. This change allows users of the of_* API in
particular to specify that their request is for a 'shared' line.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Lee Jones [Mon, 6 Jun 2016 15:56:50 +0000 (16:56 +0100)]
reset: Ensure drivers are explicit when requesting reset lines
Phasing out generic reset line requests enables us to make some better
decisions on when and how to (de)assert said lines. If an 'exclusive'
line is requested, we know a device *requires* a reset and that it's
preferable to act upon a request right away. However, if a 'shared'
reset line is requested, we can reasonably assume sure that placing a
device into reset isn't a hard requirement, but probably a measure to
save power and is thus able to cope with not being asserted if another
device is still in use.
In order allow gentle adoption and not to forcing all consumers to
move to the API immediately, causing administration headache between
subsystems, this patch adds some temporary stand-in shim-calls. This
will ease the burden at merge time and allow subsystems to migrate over
to the new API in a more realistic time-frame.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Lee Jones [Mon, 6 Jun 2016 15:56:49 +0000 (16:56 +0100)]
reset: Reorder inline reset_control_get*() wrappers
We're about to split the current API into two, where consumers will
be forced to be explicit when requesting reset lines. The choice
will be to either the call the *_exclusive or *_shared variant
depending on whether they can actually tolorate not being asserted
when that request is made.
The new API will look like this once reorded and complete:
reset_control_get_exclusive()
reset_control_get_shared()
reset_control_get_optional_exclusive()
reset_control_get_optional_shared()
of_reset_control_get_exclusive()
of_reset_control_get_shared()
of_reset_control_get_exclusive_by_index()
of_reset_control_get_shared_by_index()
devm_reset_control_get_exclusive()
devm_reset_control_get_shared()
devm_reset_control_get_optional_exclusive()
devm_reset_control_get_optional_shared()
devm_reset_control_get_exclusive_by_index()
devm_reset_control_get_shared_by_index()
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Linus Torvalds [Wed, 29 Jun 2016 18:50:42 +0000 (11:50 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
"I've been traveling so this accumulates more than week or so of bug
fixing. It perhaps looks a little worse than it really is.
1) Fix deadlock in ath10k driver, from Ben Greear.
2) Increase scan timeout in iwlwifi, from Luca Coelho.
3) Unbreak STP by properly reinjecting STP packets back into the
stack. Regression fix from Ido Schimmel.
4) Mediatek driver fixes (missing malloc failure checks, leaking of
scratch memory, wrong indexing when mapping TX buffers, etc.) from
John Crispin.
5) Fix endianness bug in icmpv6_err() handler, from Hannes Frederic
Sowa.
6) Fix hashing of flows in UDP in the ruseport case, from Xuemin Su.
7) Fix netlink notifications in ovs for tunnels, delete link messages
are never emitted because of how the device registry state is
handled. From Nicolas Dichtel.
8) Conntrack module leaks kmemcache on unload, from Florian Westphal.
9) Prevent endless jump loops in nft rules, from Liping Zhang and
Pablo Neira Ayuso.
10) Not early enough spinlock initialization in mlx4, from Eric
Dumazet.
11) Bind refcount leak in act_ipt, from Cong WANG.
12) Missing RCU locking in HTB scheduler, from Florian Westphal.
13) Several small MACSEC bug fixes from Sabrina Dubroca (missing RCU
barrier, using heap for SG and IV, and erroneous use of async flag
when allocating AEAD conext.)
14) RCU handling fix in TIPC, from Ying Xue.
15) Pass correct protocol down into ipv4_{update_pmtu,redirect}() in
SIT driver, from Simon Horman.
16) Socket timer deadlock fix in TIPC from Jon Paul Maloy.
17) Fix potential deadlock in team enslave, from Ido Schimmel.
18) Memory leak in KCM procfs handling, from Jiri Slaby.
19) ESN generation fix in ipv4 ESP, from Herbert Xu.
20) Fix GFP_KERNEL allocations with locks held in act_ife, from Cong
WANG.
21) Use after free in netem, from Eric Dumazet.
22) Uninitialized last assert time in multicast router code, from Tom
Goff.
23) Skip raw sockets in sock_diag destruction broadcast, from Willem
de Bruijn.
24) Fix link status reporting in thunderx, from Sunil Goutham.
25) Limit resegmentation of retransmit queue so that we do not
retransmit too large GSO frames. From Eric Dumazet.
26) Delay bpf program release after grace period, from Daniel
Borkmann"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (141 commits)
openvswitch: fix conntrack netlink event delivery
qed: Protect the doorbell BAR with the write barriers.
neigh: Explicitly declare RCU-bh read side critical section in neigh_xmit()
e1000e: keep VLAN interfaces functional after rxvlan off
cfg80211: fix proto in ieee80211_data_to_8023 for frames without LLC header
qlcnic: use the correct ring in qlcnic_83xx_process_rcv_ring_diag()
bpf, perf: delay release of BPF prog after grace period
net: bridge: fix vlan stats continue counter
tcp: do not send too big packets at retransmit time
ibmvnic: fix to use list_for_each_safe() when delete items
net: thunderx: Fix TL4 configuration for secondary Qsets
net: thunderx: Fix link status reporting
net/mlx5e: Reorganize ethtool statistics
net/mlx5e: Fix number of PFC counters reported to ethtool
net/mlx5e: Prevent adding the same vxlan port
net/mlx5e: Check for BlueFlame capability before allocating SQ uar
net/mlx5e: Change enum to better reflect usage
net/mlx5: Add ConnectX-5 PCIe 4.0 to list of supported devices
net/mlx5: Update command strings
net: marvell: Add separate config ANEG function for Marvell 88E1111
...
Linus Torvalds [Wed, 29 Jun 2016 18:48:05 +0000 (11:48 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"Another two bug fixes for 4.7:
- The revert of patch which removed boot information for systems
using an intermediate boot kernel, e.g. the SLES12 grub setup.
- A fix for an incorrect inline assembly constraint that causes
broken code to be generated with gcc 4.8.5"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: fix test_fp_ctl inline assembly contraints
Revert "s390/kdump: Clear subchannel ID to signal non-CCW/SCSI IPL"
Dan Williams [Wed, 29 Jun 2016 18:19:32 +0000 (11:19 -0700)]
nfit: fix format interface code byte order
Per JEDEC Annex L Release 3 the SPD data is:
Bits 9~5 00 000 = Function Undefined
00 001 = Byte addressable energy backed
00 010 = Block addressed
00 011 = Byte addressable, no energy backed
All other codes reserved
Bits 4~0 0 0000 = Proprietary interface
0 0001 = Standard interface 1
All other codes reserved; see Definitions of Functions
...and per the ACPI 6.1 spec:
byte0: Bits 4~0 (0 or 1)
byte1: Bits 9~5 (1, 2, or 3)
...so a format interface code displayed as 0x301 should be stored in the
nfit as (0x1, 0x3), little-endian.
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Robert Elliott <elliott@hpe.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=121161
Fixes:
30ec5fd464d5 ("nfit: fix format interface code byte order per ACPI6.1")
Fixes:
5ad9a7fde07a ("acpi/nfit: Update nfit driver to comply with ACPI 6.1")
Reported-by: Kristin Jacque <kristin.jacque@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Venkat Reddy Talla [Wed, 29 Jun 2016 10:01:27 +0000 (15:31 +0530)]
regulator: max77620: check for valid regulator info
SD4 regulator is not registered with regulator core
framework in probe as there is no support in MAX77620 PMIC,
removing SD4 entry from MAX77620 regulator information list
and checking for valid regulator information data before
configuring FPS source and FPS power up/down period to avoid
NULL pointer exception if regulator not registered with core.
Signed-off-by: Venkat Reddy Talla <vreddytalla@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Linus Torvalds [Wed, 29 Jun 2016 17:05:44 +0000 (10:05 -0700)]
Merge tag 'pinctrl-v4.7-3' of git://git./linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Here are a bunch of fixes for pin control. Just drivers and a
MAINTAINERS fixup:
- Driver fixes for i.MX, single register, Tegra and BayTrail.
- MAINTAINERS entry for the documentation"
* tag 'pinctrl-v4.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: baytrail: Fix mingled clock pins
MAINTAINERS: belong Documentation/pinctrl.txt properly
pinctrl: tegra: Fix build dependency
gpio: tegra: Make lockdep class file-scoped
pinctrl: single: Fix missing flush of posted write for a wakeirq
pinctrl: imx: Do not treat a PIN without MUX register as an error
Linus Torvalds [Wed, 29 Jun 2016 17:04:42 +0000 (10:04 -0700)]
Merge branch 'for-4.7-fixes' of git://git./linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
"Three fix patches. Two are for cgroup / css init failure path. The
last one makes css_set_lock irq-safe as the deadline scheduler ends up
calling put_css_set() from irq context"
* 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: Disable IRQs while holding css_set_lock
cgroup: set css->id to -1 during init
cgroup: remove redundant cleanup in css_create
Rex Zhu [Tue, 28 Jun 2016 08:22:07 +0000 (16:22 +0800)]
drm/amd/powerplay: workaround for UVD clock issue
workaround issue that when uvd dpm disabled,
uvd clock remain high on polaris10. Manually turn
off the clocks.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Ken Wang [Tue, 28 Jun 2016 05:28:50 +0000 (13:28 +0800)]
drm/amdgpu: add ACLK_CNTL setting for polaris10
This is a temporary workaround for early boards.
Signed-off-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rex Zhu [Mon, 27 Jun 2016 09:30:24 +0000 (17:30 +0800)]
drm/amd/powerplay: fix issue uvd dpm can't enabled on Polaris11.
1. Populate correct value of VDDCI voltage for SMC SAMU, VCE,
and UVD levels depending on whether VDDCi control is SVI2 or GPIO.
2. Populate SMC ACPI minimum voltage using VBIOS boot SCLK and MCLK
When static voltage is configured as VDDCI, driver still tries to program
a voltage for MM minVoltage using VDDC-VDDCI delta requirement.
minVoltage should be set as boot up voltage.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rex Zhu [Mon, 27 Jun 2016 06:46:47 +0000 (14:46 +0800)]
drm/amd/powerplay: Workaround for Memory EDC Error on Polaris10.
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Miklos Szeredi [Wed, 29 Jun 2016 14:03:55 +0000 (16:03 +0200)]
ovl: get_write_access() in truncate
When truncating a file we should check write access on the underlying
inode. And we should do so on the lower file as well (before copy-up) for
consistency.
Original patch and test case by Aihua Zhang.
- - >o >o - - test.c - - >o >o - -
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
int main(int argc, char *argv[])
{
int ret;
ret = truncate(argv[0], 4096);
if (ret != -1) {
fprintf(stderr, "truncate(argv[0]) should have failed\n");
return 1;
}
if (errno != ETXTBSY) {
perror("truncate(argv[0])");
return 1;
}
return 0;
}
- - >o >o - - >o >o - - >o >o - -
Reported-by: Aihua Zhang <zhangaihua1@huawei.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org>
David S. Miller [Wed, 29 Jun 2016 12:33:46 +0000 (08:33 -0400)]
Merge tag 'mac80211-for-davem-2016-06-29-v2' of git://git./linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
Just two small fixes
* fix mesh peer link counter, decrement wasn't always done at all
* fix ethertype (length) for packets without RFC 1042 or bridge
tunnel header
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Samuel Gauthier [Tue, 28 Jun 2016 15:22:26 +0000 (17:22 +0200)]
openvswitch: fix conntrack netlink event delivery
Only the first and last netlink message for a particular conntrack are
actually sent. The first message is sent through nf_conntrack_confirm when
the conntrack is committed. The last one is sent when the conntrack is
destroyed on timeout. The other conntrack state change messages are not
advertised.
When the conntrack subsystem is used from netfilter, nf_conntrack_confirm
is called for each packet, from the postrouting hook, which in turn calls
nf_ct_deliver_cached_events to send the state change netlink messages.
This commit fixes the problem by calling nf_ct_deliver_cached_events in the
non-commit case as well.
Fixes:
7f8a436eaa2c ("openvswitch: Add conntrack action")
CC: Joe Stringer <joestringer@nicira.com>
CC: Justin Pettit <jpettit@nicira.com>
CC: Andy Zhou <azhou@nicira.com>
CC: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Samuel Gauthier <samuel.gauthier@6wind.com>
Acked-by: Joe Stringer <joe@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sudarsana Reddy Kalluru [Tue, 28 Jun 2016 11:46:03 +0000 (07:46 -0400)]
qed: Protect the doorbell BAR with the write barriers.
SPQ doorbell is currently protected with the compilation barrier. Under the
stress scenarios, we may get into a state where (due to the weak ordering)
several ramrod doorbells were written to the BAR with an out-of-order
producer values. Need to change the barrier type to a write barrier to make
sure that the write buffer is flushed after each doorbell.
Signed-off-by: Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Barroso [Tue, 28 Jun 2016 08:16:43 +0000 (11:16 +0300)]
neigh: Explicitly declare RCU-bh read side critical section in neigh_xmit()
neigh_xmit() expects to be called inside an RCU-bh read side critical
section, and while one of its two current callers gets this right, the
other one doesn't.
More specifically, neigh_xmit() has two callers, mpls_forward() and
mpls_output(), and while both callers call neigh_xmit() under
rcu_read_lock(), this provides sufficient protection for neigh_xmit()
only in the case of mpls_forward(), as that is always called from
softirq context and therefore doesn't need explicit BH protection,
while mpls_output() can be called from process context with softirqs
enabled.
When mpls_output() is called from process context, with softirqs
enabled, we can be preempted by a softirq at any time, and RCU-bh
considers the completion of a softirq as signaling the end of any
pending read-side critical sections, so if we do get a softirq
while we are in the part of neigh_xmit() that expects to be run inside
an RCU-bh read side critical section, we can end up with an unexpected
RCU grace period running right in the middle of that critical section,
making things go boom.
This patch fixes this impedance mismatch in the callee, by making
neigh_xmit() always take rcu_read_{,un}lock_bh() around the code that
expects to be treated as an RCU-bh read side critical section, as this
seems a safer option than fixing it in the callers.
Fixes:
4fd3d7d9e868f ("neigh: Add helper function neigh_xmit")
Signed-off-by: David Barroso <dbarroso@fastly.com>
Signed-off-by: Lennert Buytenhek <lbuytenhek@fastly.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: Robert Shearman <rshearma@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jarod Wilson [Wed, 29 Jun 2016 03:41:31 +0000 (20:41 -0700)]
e1000e: keep VLAN interfaces functional after rxvlan off
I've got a bug report about an e1000e interface, where a VLAN interface is
set up on top of it:
$ ip link add link ens1f0 name ens1f0.99 type vlan id 99
$ ip link set ens1f0 up
$ ip link set ens1f0.99 up
$ ip addr add 192.168.99.92 dev ens1f0.99
At this point, I can ping another host on vlan 99, ip 192.168.99.91.
However, if I do the following:
$ ethtool -K ens1f0 rxvlan off
Then no traffic passes on ens1f0.99. It comes back if I toggle rxvlan on
again. I'm not sure if this is actually intended behavior, or if there's a
lack of software VLAN stripping fallback, or what, but things continue to
work if I simply don't call e1000e_vlan_strip_disable() if there are
active VLANs (plagiarizing a function from the e1000 driver here) on the
interface.
Also slipped a related-ish fix to the kerneldoc text for
e1000e_vlan_strip_disable here...
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Felix Fietkau [Wed, 29 Jun 2016 08:36:39 +0000 (10:36 +0200)]
cfg80211: fix proto in ieee80211_data_to_8023 for frames without LLC header
The PDU length of incoming LLC frames is set to the total skb payload size
in __ieee80211_data_to_8023() of net/wireless/util.c which incorrectly
includes the length of the IEEE 802.11 header.
The resulting LLC frame header has a too large PDU length, causing the
llc_fixup_skb() function of net/llc/llc_input.c to reject the incoming
skb, effectively breaking STP.
Solve the problem by properly substracting the IEEE 802.11 frame header size
from the PDU length, allowing the LLC processor to pick up the incoming
control messages.
Special thanks to Gerry Rozema for tracking down the regression and proposing
a suitable patch.
Fixes:
2d1c304cb2d5 ("cfg80211: add function for 802.3 conversion with separate output buffer")
Cc: stable@vger.kernel.org
Reported-by: Gerry Rozema <gerryr@rozeware.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Dan Carpenter [Mon, 27 Jun 2016 20:50:29 +0000 (23:50 +0300)]
qlcnic: use the correct ring in qlcnic_83xx_process_rcv_ring_diag()
There is a static checker warning here "warn: mask and shift to zero"
and the code sets "ring" to zero every time. From looking at how
QLCNIC_FETCH_RING_ID() is used in qlcnic_83xx_process_rcv_ring() the
qlcnic_83xx_hndl() should be removed.
Fixes:
4be41e92f7c6 ('qlcnic: 83xx data path routines')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Mon, 27 Jun 2016 19:38:11 +0000 (21:38 +0200)]
bpf, perf: delay release of BPF prog after grace period
Commit
dead9f29ddcc ("perf: Fix race in BPF program unregister") moved
destruction of BPF program from free_event_rcu() callback to __free_event(),
which is problematic if used with tail calls: if prog A is attached as
trace event directly, but at the same time present in a tail call map used
by another trace event program elsewhere, then we need to delay destruction
via RCU grace period since it can still be in use by the program doing the
tail call (the prog first needs to be dropped from the tail call map, then
trace event with prog A attached destroyed, so we get immediate destruction).
Fixes:
dead9f29ddcc ("perf: Fix race in BPF program unregister")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: Jann Horn <jann@thejh.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nikolay Aleksandrov [Mon, 27 Jun 2016 16:34:42 +0000 (18:34 +0200)]
net: bridge: fix vlan stats continue counter
I made a dumb off-by-one mistake when I added the vlan stats counter
dumping code. The increment should happen before the check, not after
otherwise we miss one entry when we continue dumping.
Fixes:
a60c090361ea ("bridge: netlink: export per-vlan stats")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>