Baokun Li [Wed, 9 Jun 2021 07:02:42 +0000 (15:02 +0800)]
clockevents: Use list_move() instead of list_del()/list_add()
Simplify the code.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210609070242.1322450-1-libaokun1@huawei.com
Feng Tang [Thu, 27 May 2021 19:01:24 +0000 (12:01 -0700)]
clocksource: Print deviation in nanoseconds when a clocksource becomes unstable
Currently when an unstable clocksource is detected, the raw counters of
that clocksource and watchdog will be printed, which can only be understood
after some math calculation.
So print the delta in nanoseconds as well to make it easier for humans to
check the results.
[ paulmck: Fix typo. ]
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210527190124.440372-6-paulmck@kernel.org
Paul E. McKenney [Thu, 27 May 2021 19:01:23 +0000 (12:01 -0700)]
clocksource: Provide kernel module to test clocksource watchdog
When the clocksource watchdog marks a clock as unstable, this might
be due to that clock being unstable or it might be due to delays that
happen to occur between the reads of the two clocks. It would be good
to have a way of testing the clocksource watchdog's ability to
distinguish between these two causes of clock skew and instability.
Therefore, provide a new clocksource-wdtest module selected by a new
TEST_CLOCKSOURCE_WATCHDOG Kconfig option. This module has a single module
parameter named "holdoff" that provides the number of seconds of delay
before testing should start, which defaults to zero when built as a module
and to 10 seconds when built directly into the kernel. Very large systems
that boot slowly may need to increase the value of this module parameter.
This module uses hand-crafted clocksource structures to do its testing,
thus avoiding messing up timing for the rest of the kernel and for user
applications. This module first verifies that the ->uncertainty_margin
field of the clocksource structures are set sanely. It then tests the
delay-detection capability of the clocksource watchdog, increasing the
number of consecutive delays injected, first provoking console messages
complaining about the delays and finally forcing a clock-skew event.
Unexpected test results cause at least one WARN_ON_ONCE() console splat.
If there are no splats, the test has passed. Finally, it fuzzes the
value returned from a clocksource to test the clocksource watchdog's
ability to detect time skew.
This module checks the state of its clocksource after each test, and
uses WARN_ON_ONCE() to emit a console splat if there are any failures.
This should enable all types of test frameworks to detect any such
failures.
This facility is intended for diagnostic use only, and should be avoided
on production systems.
Reported-by: Chris Mason <clm@fb.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Feng Tang <feng.tang@intel.com>
Link: https://lore.kernel.org/r/20210527190124.440372-5-paulmck@kernel.org
Paul E. McKenney [Thu, 27 May 2021 19:01:22 +0000 (12:01 -0700)]
clocksource: Reduce clocksource-skew threshold
Currently, WATCHDOG_THRESHOLD is set to detect a 62.5-millisecond skew in
a 500-millisecond WATCHDOG_INTERVAL. This requires that clocks be skewed
by more than 12.5% in order to be marked unstable. Except that a clock
that is skewed by that much is probably destroying unsuspecting software
right and left. And given that there are now checks for false-positive
skews due to delays between reading the two clocks, it should be possible
to greatly decrease WATCHDOG_THRESHOLD, at least for fine-grained clocks
such as TSC.
Therefore, add a new uncertainty_margin field to the clocksource structure
that contains the maximum uncertainty in nanoseconds for the corresponding
clock. This field may be initialized manually, as it is for
clocksource_tsc_early and clocksource_jiffies, which is copied to
refined_jiffies. If the field is not initialized manually, it will be
computed at clock-registry time as the period of the clock in question
based on the scale and freq parameters to __clocksource_update_freq_scale()
function. If either of those two parameters are zero, the
tens-of-milliseconds WATCHDOG_THRESHOLD is used as a cowardly alternative
to dividing by zero. No matter how the uncertainty_margin field is
calculated, it is bounded below by twice WATCHDOG_MAX_SKEW, that is, by 100
microseconds.
Note that manually initialized uncertainty_margin fields are not adjusted,
but there is a WARN_ON_ONCE() that triggers if any such field is less than
twice WATCHDOG_MAX_SKEW. This WARN_ON_ONCE() is intended to discourage
production use of the one-nanosecond uncertainty_margin values that are
used to test the clock-skew code itself.
The actual clock-skew check uses the sum of the uncertainty_margin fields
of the two clocksource structures being compared. Integer overflow is
avoided because the largest computed value of the uncertainty_margin
fields is one billion (10^9), and double that value fits into an
unsigned int. However, if someone manually specifies (say) UINT_MAX,
they will get what they deserve.
Note that the refined_jiffies uncertainty_margin field is initialized to
TICK_NSEC, which means that skew checks involving this clocksource will
be sufficently forgiving. In a similar vein, the clocksource_tsc_early
uncertainty_margin field is initialized to 32*NSEC_PER_MSEC, which
replicates the current behavior and allows custom setting if needed
in order to address the rare skews detected for this clocksource in
current mainline.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Feng Tang <feng.tang@intel.com>
Link: https://lore.kernel.org/r/20210527190124.440372-4-paulmck@kernel.org
Paul E. McKenney [Thu, 27 May 2021 19:01:21 +0000 (12:01 -0700)]
clocksource: Limit number of CPUs checked for clock synchronization
Currently, if skew is detected on a clock marked CLOCK_SOURCE_VERIFY_PERCPU,
that clock is checked on all CPUs. This is thorough, but might not be
what you want on a system with a few tens of CPUs, let alone a few hundred
of them.
Therefore, by default check only up to eight randomly chosen CPUs. Also
provide a new clocksource.verify_n_cpus kernel boot parameter. A value of
-1 says to check all of the CPUs, and a non-negative value says to randomly
select that number of CPUs, without concern about selecting the same CPU
multiple times. However, make use of a cpumask so that a given CPU will be
checked at most once.
Suggested-by: Thomas Gleixner <tglx@linutronix.de> # For verify_n_cpus=1.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Feng Tang <feng.tang@intel.com>
Link: https://lore.kernel.org/r/20210527190124.440372-3-paulmck@kernel.org
Paul E. McKenney [Thu, 27 May 2021 19:01:20 +0000 (12:01 -0700)]
clocksource: Check per-CPU clock synchronization when marked unstable
Some sorts of per-CPU clock sources have a history of going out of
synchronization with each other. However, this problem has purportedy been
solved in the past ten years. Except that it is all too possible that the
problem has instead simply been made less likely, which might mean that
some of the occasional "Marking clocksource 'tsc' as unstable" messages
might be due to desynchronization. How would anyone know?
Therefore apply CPU-to-CPU synchronization checking to newly unstable
clocksource that are marked with the new CLOCK_SOURCE_VERIFY_PERCPU flag.
Lists of desynchronized CPUs are printed, with the caveat that if it
is the reporting CPU that is itself desynchronized, it will appear that
all the other clocks are wrong. Just like in real life.
Reported-by: Chris Mason <clm@fb.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Feng Tang <feng.tang@intel.com>
Link: https://lore.kernel.org/r/20210527190124.440372-2-paulmck@kernel.org
Paul E. McKenney [Thu, 27 May 2021 19:01:19 +0000 (12:01 -0700)]
clocksource: Retry clock read if long delays detected
When the clocksource watchdog marks a clock as unstable, this might be due
to that clock being unstable or it might be due to delays that happen to
occur between the reads of the two clocks. Yes, interrupts are disabled
across those two reads, but there are no shortage of things that can delay
interrupts-disabled regions of code ranging from SMI handlers to vCPU
preemption. It would be good to have some indication as to why the clock
was marked unstable.
Therefore, re-read the watchdog clock on either side of the read from the
clock under test. If the watchdog clock shows an excessive time delta
between its pair of reads, the reads are retried.
The maximum number of retries is specified by a new kernel boot parameter
clocksource.max_cswd_read_retries, which defaults to three, that is, up to
four reads, one initial and up to three retries. If more than one retry
was required, a message is printed on the console (the occasional single
retry is expected behavior, especially in guest OSes). If the maximum
number of retries is exceeded, the clock under test will be marked
unstable. However, the probability of this happening due to various sorts
of delays is quite small. In addition, the reason (clock-read delays) for
the unstable marking will be apparent.
Reported-by: Chris Mason <clm@fb.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Feng Tang <feng.tang@intel.com>
Link: https://lore.kernel.org/r/20210527190124.440372-1-paulmck@kernel.org
Baokun Li [Tue, 8 Jun 2021 02:43:05 +0000 (10:43 +0800)]
clockevents: Add missing parameter documentation
Add the missing documentation for the @cpu parameter of
tick_cleanup_dead_cpu().
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210608024305.2750999-1-libaokun1@huawei.com
Thomas Gleixner [Fri, 18 Jun 2021 15:57:47 +0000 (17:57 +0200)]
Merge tag 'timers-v5.14' of https://git.linaro.org/people/daniel.lezcano/linux into timers/core
Pull clockevent/source updates from Daniel Lezcano:
- Remove arch_timer_rate1 variable as it is unused in the architected
ARM timer (Jisheng Zhang)
- Minor cleanups (whitespace, constification, ...) for the Samsung pwm
timer (Krzysztof Kozlowski)
- Acknowledge and disable the timer interrupt at suspend time to
prevent the suspend to be aborted by the ATF if there is a pending
one on the Mediatek timer (Evan Benn)
- Save and restore the configuration register at suspend/resume time
for TI dm timer (Tony Lindgren)
- Set the scene for the next timers support by renaming the array
variables on the Ingenic time (Zhou Yanjie)
- Add the clock rate change notification to adjust the prescalar value
and compensate the clock source on the ARM global timer (Andrea
Merello)
- Add missing variable static annotation on the ARM global timer (Zou
Wei)
- Remove a duplicate argument when building the bits field on the ARM
global timer (Wan Jiabing)
- Improve the timer workaround function by reducing the loop on the
Allwinner A64 timer (Samuel Holland)
- Do no restore the register context in case of error on the TI dm
timer (Tony Lindgren)
Link: https://lore.kernel.org/r/65ed5f60-d7a5-b4ae-ff78-0382d4671cc5@linaro.org
Tony Lindgren [Tue, 18 May 2021 07:53:06 +0000 (10:53 +0300)]
clocksource/drivers/timer-ti-dm: Drop unnecessary restore
The device is not losing context on CPU_CLUSTER_PM_ERROR. As we are only
saving and restoring context with cpu_pm, there is no need to restore the
context in case of an error.
Note that the unnecessary restoring of context does not cause issues, it's
just not needed.
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210518075306.35532-1-tony@atomide.com
Samuel Holland [Sat, 15 May 2021 02:14:39 +0000 (21:14 -0500)]
clocksource/arm_arch_timer: Improve Allwinner A64 timer workaround
Bad counter reads are experienced sometimes when bit 10 or greater rolls
over. Originally, testing showed that at least 10 lower bits would be
set to the same value during these bad reads. However, some users still
reported time skips.
Wider testing revealed that on some chips, occasionally only the lowest
9 bits would read as the anomalous value. During these reads (which
still happen only when bit 10), bit 9 would read as the correct value.
Reduce the mask by one bit to cover these cases as well.
Cc: stable@vger.kernel.org
Fixes:
c950ca8c35ee ("clocksource/drivers/arch_timer: Workaround for Allwinner A64 timer instability")
Reported-by: Roman Stratiienko <r.stratiienko@gmail.com>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210515021439.55316-1-samuel@sholland.org
Wan Jiabing [Tue, 15 Jun 2021 11:54:40 +0000 (19:54 +0800)]
clocksource/drivers/arm_global_timer: Remove duplicated argument in arm_global_timer
Fix the following coccicheck warning:
drivers/clocksource/arm_global_timer.c:107:4-23:
duplicated argument to & or |
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210615115440.8881-1-wanjiabing@vivo.com
Zou Wei [Sat, 12 Jun 2021 09:27:26 +0000 (17:27 +0800)]
clocksource/drivers/arm_global_timer: Make symbol 'gt_clk_rate_change_nb' static
The sparse tool complains as follows:
drivers/clocksource/arm_global_timer.c:54:23: warning:
symbol 'gt_clk_rate_change_nb' was not declared. Should it be static?
This symbol is not used outside of arm_global_timer.c, so mark it static.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1623490046-37972-1-git-send-email-zou_wei@huawei.com
Andrea Merello [Tue, 6 Apr 2021 13:00:45 +0000 (15:00 +0200)]
arm: zynq: don't disable CONFIG_ARM_GLOBAL_TIMER due to CONFIG_CPU_FREQ anymore
Now ARM global timer driver could work even if it's source clock rate
changes, so we don't need to disable that driver when cpu frequency scaling
is in use.
This cause Zynq arch to get support for timer delay and get_cycles().
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210406130045.15491-3-andrea.merello@gmail.com
Andrea Merello [Tue, 6 Apr 2021 13:00:44 +0000 (15:00 +0200)]
clocksource/drivers/arm_global_timer: Implement rate compensation whenever source clock changes
This patch adds rate change notification support for the parent clock;
should that clock change, then we try to adjust the our prescaler in order
to compensate (i.e. we adjust to still get the same timer frequency).
This is loosely based on what it's done in timer-cadence-ttc. timer-sun51,
mips-gic-timer and smp_twd.c also seem to look at their parent clock rate
and to perform some kind of adjustment whenever needed.
In this particular case we have only one single counter and prescaler for
all clocksource, clockevent and timer_delay, and we just update it for all
(i.e. we don't let it go and call clockevents_update_freq() to notify to
the kernel that our rate has changed).
Note that, there is apparently no other way to fixup things, because once
we call register_current_timer_delay(), specifying the timer rate, it seems
that that rate is not supposed to change ever.
In order for this mechanism to work, we have to make assumptions about how
much the initial clock is supposed to eventually decrease from the initial
one, and set our initial prescaler to a value that we can eventually
decrease enough to compensate. We provide an option in KConfig for this.
In case we end up in a situation in which we are not able to compensate the
parent clock change, we fail returning NOTIFY_BAD.
This fixes a real-world problem with Zynq arch not being able to use this
driver and CPU_FREQ at the same time (because ARM global timer is fed by
the CPU clock, which may keep changing when CPU_FREQ is enabled).
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Sören Brinkmann <soren.brinkmann@xilinx.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210406130045.15491-2-andrea.merello@gmail.com
周琰杰 (Zhou Yanjie) [Fri, 4 Jun 2021 16:31:45 +0000 (00:31 +0800)]
clocksource/drivers/ingenic: Rename unreasonable array names
1.Rename the "ingenic_ost_clk_info[]" to "x1000_ost_clk_info[]" to
facilitate the addition of OST support for X2000 SoC in a later
commit
2.When the OST support for X2000 SoC is added, there will be two
compatible strings, so renaming "ingenic_ost_of_match[]" to
"ingenic_ost_of_matches[]" is more reasonable
3.Remove the unnecessary comma in "ingenic_ost_of_matches[]" to reduce
code size as much as possible.
Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1622824306-30987-2-git-send-email-zhouyanjie@wanyeetech.com
Tony Lindgren [Thu, 15 Apr 2021 08:55:06 +0000 (11:55 +0300)]
clocksource/drivers/timer-ti-dm: Save and restore timer TIOCP_CFG
As we are using cpu_pm to save and restore context, we must also save and
restore the timer sysconfig register TIOCP_CFG. This is needed because
we are not calling PM runtime functions at all with cpu_pm.
Fixes:
b34677b0999a ("clocksource/drivers/timer-ti-dm: Implement cpu_pm notifier for context save and restore")
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Adam Ford <aford173@gmail.com>
Cc: Andreas Kemnade <andreas@kemnade.info>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210415085506.56828-1-tony@atomide.com
Evan Benn [Wed, 12 May 2021 02:25:44 +0000 (12:25 +1000)]
clocksource/drivers/mediatek: Ack and disable interrupts on suspend
Interrupts are disabled during suspend before this driver disables its
timers. ARM trusted firmware will abort suspend if the timer irq is
pending, so ack and disable the timer interrupt during suspend.
Signed-off-by: Evan Benn <evanbenn@chromium.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210512122528.v4.1.I1d9917047de06715da16e1620759f703fcfdcbcb@changeid
Krzysztof Kozlowski [Thu, 6 May 2021 20:27:28 +0000 (16:27 -0400)]
clocksource/drivers/samsung_pwm: Constify source IO memory
The 'source_reg' IO memory is only read, so the pointer can point to
const for safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210506202729.157260-4-krzysztof.kozlowski@canonical.com
Krzysztof Kozlowski [Thu, 6 May 2021 20:27:27 +0000 (16:27 -0400)]
clocksource/drivers/samsung_pwm: Cleanup on init error
Failure of timer initialization is likely to be fatal for the system, so
cleanup in such case is not strictly necessary. However the code might
be refactored or reused, so better not to rely on such assumption that
system won't continue init failure.
Unmap the IO memory and put the clock on initialization failures from
devicetree.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210506202729.157260-3-krzysztof.kozlowski@canonical.com
Krzysztof Kozlowski [Thu, 6 May 2021 20:27:26 +0000 (16:27 -0400)]
clocksource/drivers/samsung_pwm: Constify passed structure
The 'struct samsung_pwm_variant' argument passed to initialization
functions is not modified, so it can be made const for safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210506202729.157260-2-krzysztof.kozlowski@canonical.com
Krzysztof Kozlowski [Thu, 6 May 2021 20:27:25 +0000 (16:27 -0400)]
clocksource/drivers/samsung_pwm: Minor whitespace cleanup
Cleanup the code to be slightly more readable and follow coding
convention - only whitespace. This fixes checkpatch warnings:
WARNING: Block comments should align the * on each line
WARNING: please, no space before tabs
WARNING: Missing a blank line after declarations
CHECK: Alignment should match open parenthesis
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210506202729.157260-1-krzysztof.kozlowski@canonical.com
Jisheng Zhang [Tue, 11 May 2021 07:48:56 +0000 (15:48 +0800)]
clocksource/drivers/arm_arch_timer: Remove arch_timer_rate1
This variable is added by my mistake, it's not used at all.
Fixes:
e2bf384d4329 ("clocksource/drivers/arm_arch_timer: Add __ro_after_init and __init")
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210511154856.6afbcb65@xhacker.debian
Will Deacon [Mon, 24 May 2021 22:18:18 +0000 (23:18 +0100)]
timer_list: Print name of per-cpu wakeup device
With the introduction of per-cpu wakeup devices that can be used in
preference to the broadcast timer, print the name of such devices when
they are available.
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210524221818.15850-6-will@kernel.org
Will Deacon [Mon, 24 May 2021 22:18:17 +0000 (23:18 +0100)]
tick/broadcast: Program wakeup timer when entering idle if required
When configuring the broadcast timer on entry to and exit from deep idle
states, prefer a per-CPU wakeup timer if one exists.
On entry to idle, stop the tick device and transfer the next event into
the oneshot wakeup device, which will serve as the wakeup from idle. To
avoid the overhead of additional hardware accesses on exit from idle,
leave the timer armed and treat the inevitable interrupt as a (possibly
spurious) tick event.
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210524221818.15850-5-will@kernel.org
Will Deacon [Mon, 24 May 2021 22:18:16 +0000 (23:18 +0100)]
tick/broadcast: Prefer per-cpu oneshot wakeup timers to broadcast
Some SoCs have two per-cpu timer implementations where the timer with the
higher rating stops in deep idle (i.e. suffers from CLOCK_EVT_FEAT_C3STOP)
but is otherwise preferable to the timer with the lower rating. In such a
design, selecting the higher rated devices relies on a global broadcast
timer and IPIs to wake up from deep idle states.
To avoid the reliance on a global broadcast timer and also to reduce the
overhead associated with the IPI wakeups, extend
tick_install_broadcast_device() to manage per-cpu wakeup timers separately
from the broadcast device.
For now, these timers remain unused.
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210524221818.15850-4-will@kernel.org
Will Deacon [Mon, 24 May 2021 22:18:15 +0000 (23:18 +0100)]
tick/broadcast: Split __tick_broadcast_oneshot_control() into a helper
In preparation for adding support for per-cpu wakeup timers, split
_tick_broadcast_oneshot_control() into a helper function which deals
only with the broadcast timer management across idle transitions.
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210524221818.15850-3-will@kernel.org
Will Deacon [Mon, 24 May 2021 22:18:14 +0000 (23:18 +0100)]
tick/broadcast: Drop unneeded CONFIG_GENERIC_CLOCKEVENTS_BROADCAST guard
tick-broadcast.o is only built if CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
so remove the redundant #ifdef guards around the definition of
tick_receive_broadcast().
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210524221818.15850-2-will@kernel.org
YueHaibing [Sun, 23 May 2021 06:58:25 +0000 (14:58 +0800)]
clockevents: Use DEVICE_ATTR_[RO|WO] macros
Use the DEVICE_ATTR_[RO|WO] helpers instead of plain DEVICE_ATTR, which
makes the code a bit shorter and easier to read.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20210523065825.19684-1-yuehaibing@huawei.com
Linus Torvalds [Sun, 30 May 2021 21:58:25 +0000 (11:58 -1000)]
Linux 5.13-rc4
Linus Torvalds [Sun, 30 May 2021 04:24:00 +0000 (18:24 -1000)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"This is a bit larger than usual at rc4 time. The reason is due to
Lee's work of fixing newly reported build warnings.
The rest is fixes as usual"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (22 commits)
MAINTAINERS: adjust to removing i2c designware platform data
i2c: s3c2410: fix possible NULL pointer deref on read message after write
i2c: mediatek: Disable i2c start_en and clear intr_stat brfore reset
i2c: i801: Don't generate an interrupt on bus reset
i2c: mpc: implement erratum A-004447 workaround
powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
dt-bindings: i2c: mpc: Add fsl,i2c-erratum-a004447 flag
i2c: busses: i2c-stm32f4: Remove incorrectly placed ' ' from function name
i2c: busses: i2c-st: Fix copy/paste function misnaming issues
i2c: busses: i2c-pnx: Provide descriptions for 'alg_data' data structure
i2c: busses: i2c-ocores: Place the expected function names into the documentation headers
i2c: busses: i2c-eg20t: Fix 'bad line' issue and provide description for 'msgs' param
i2c: busses: i2c-designware-master: Fix misnaming of 'i2c_dw_init_master()'
i2c: busses: i2c-cadence: Fix incorrectly documented 'enum cdns_i2c_slave_mode'
i2c: busses: i2c-ali1563: File headers are not good candidates for kernel-doc
i2c: muxes: i2c-arb-gpio-challenge: Demote non-conformant kernel-doc headers
i2c: busses: i2c-nomadik: Fix formatting issue pertaining to 'timeout'
i2c: sh_mobile: Use new clock calculation formulas for RZ/G2E
i2c: I2C_HISI should depend on ACPI
...
Linus Torvalds [Sun, 30 May 2021 04:16:09 +0000 (18:16 -1000)]
Merge tag 'seccomp-fixes-v5.13-rc4' of git://git./linux/kernel/git/kees/linux
Pull seccomp fixes from Kees Cook:
"This fixes a hard-to-hit race condition in the addfd user_notif
feature of seccomp, visible since v5.9.
And a small documentation fix"
* tag 'seccomp-fixes-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
seccomp: Refactor notification handler to prepare for new semantics
Documentation: seccomp: Fix user notification documentation
Linus Torvalds [Sun, 30 May 2021 04:10:10 +0000 (18:10 -1000)]
Merge tag 'riscv-for-linus-5.13-rc4' of git://git./linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
"A handful of RISC-V related fixes:
- avoid errors when the stack tracing code is tracing itself.
- resurrect the memtest= kernel command line argument on RISC-V,
which was briefly enabled during the merge window before a
refactoring disabled it.
- build fix and some warning cleanups"
* tag 'riscv-for-linus-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: kexec: Fix W=1 build warnings
riscv: kprobes: Fix build error when MMU=n
riscv: Select ARCH_USE_MEMTEST
riscv: stacktrace: fix the riscv stacktrace when CONFIG_FRAME_POINTER enabled
Linus Torvalds [Sun, 30 May 2021 03:47:19 +0000 (17:47 -1000)]
Merge tag 'xfs-5.13-fixes-3' of git://git./fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"This week's pile mitigates some decades-old problems in how extent
size hints interact with realtime volumes, fixes some failures in
online shrink, and fixes a problem where directory and symlink
shrinking on extremely fragmented filesystems could fail.
The most user-notable change here is to point users at our (new) IRC
channel on OFTC. Freedom isn't free, it costs folks like you and me;
and if you don't kowtow, they'll expel everyone and take over your
channel. (Ok, ok, that didn't fit the song lyrics...)
Summary:
- Fix a bug where unmapping operations end earlier than expected,
which can cause chaos on multi-block directory and symlink shrink
operations.
- Fix an erroneous assert that can trigger if we try to transition a
bmap structure from btree format to extents format with zero
extents. This was exposed by xfs/538"
* tag 'xfs-5.13-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: bunmapi has unnecessary AG lock ordering issues
xfs: btree format inode forks can have zero extents
xfs: add new IRC channel to MAINTAINERS
xfs: validate extsz hints against rt extent size when rtinherit is set
xfs: standardize extent size hint validation
xfs: check free AG space when making per-AG reservations
Sargun Dhillon [Mon, 17 May 2021 19:39:06 +0000 (12:39 -0700)]
seccomp: Refactor notification handler to prepare for new semantics
This refactors the user notification code to have a do / while loop around
the completion condition. This has a small change in semantic, in that
previously we ignored addfd calls upon wakeup if the notification had been
responded to, but instead with the new change we check for an outstanding
addfd calls prior to returning to userspace.
Rodrigo Campos also identified a bug that can result in addfd causing
an early return, when the supervisor didn't actually handle the
syscall [1].
[1]: https://lore.kernel.org/lkml/
20210413160151.3301-1-rodrigo@kinvolk.io/
Fixes:
7cf97b125455 ("seccomp: Introduce addfd ioctl to seccomp user notifier")
Signed-off-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Tycho Andersen <tycho@tycho.pizza>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Rodrigo Campos <rodrigo@kinvolk.io>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210517193908.3113-3-sargun@sargun.me
Linus Torvalds [Sat, 29 May 2021 16:55:55 +0000 (06:55 -1000)]
Merge tag 'thermal-v5.13-rc4' of git://git./linux/kernel/git/thermal/linux
Pull thermal fixes from Daniel Lezcano:
- Fix uninitialized error code value for the SPMI adc driver (Yang
Yingliang)
- Fix kernel doc warning (Yang Li)
- Fix wrong read-write thermal trip point initialization (Srinivas
Pandruvada)
* tag 'thermal-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
thermal/drivers/qcom: Fix error code in adc_tm5_get_dt_channel_data()
thermal/ti-soc-thermal: Fix kernel-doc
thermal/drivers/intel: Initialize RW trip to THERMAL_TEMP_INVALID
Linus Torvalds [Sat, 29 May 2021 16:41:50 +0000 (06:41 -1000)]
Merge tag 'char-misc-5.13-rc4' of git://git./linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some tiny char/misc driver fixes for 5.13-rc4.
Nothing huge here, just some tiny fixes for reported issues:
- two interconnect driver fixes
- kgdb build warning fix for gcc-11
- hgafb regression fix
- soundwire driver fix
- mei driver fix
All have been in linux-next with no reported issues"
* tag 'char-misc-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
mei: request autosuspend after sending rx flow control
kgdb: fix gcc-11 warnings harder
video: hgafb: correctly handle card detect failure during probe
soundwire: qcom: fix handling of qcom,ports-block-pack-mode
interconnect: qcom: Add missing MODULE_DEVICE_TABLE
interconnect: qcom: bcm-voter: add a missing of_node_put()
Linus Torvalds [Sat, 29 May 2021 16:33:28 +0000 (06:33 -1000)]
Merge tag 'driver-core-5.13-rc4' of git://git./linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are three small driver core / debugfs fixes for 5.13-rc4:
- debugfs fix for incorrect "lockdown" mode for selinux accesses
- two device link changes, one bugfix and one cleanup
All of these have been in linux-next for over a week with no reported
problems"
* tag 'driver-core-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
drivers: base: Reduce device link removal code duplication
drivers: base: Fix device link removal
debugfs: fix security_locked_down() call for SELinux
Linus Torvalds [Sat, 29 May 2021 16:29:13 +0000 (06:29 -1000)]
Merge tag 'staging-5.13-rc4' of git://git./linux/kernel/git/gregkh/staging
Pull staging and IIO driver fixes from Greg KH:
"Here are some small IIO and staging driver fixes for reported issues
for 5.13-rc4.
Nothing major here, tiny changes for reported problems, full details
are in the shortlog if people are curious.
All have been in linux-next for a while with no reported problems"
* tag 'staging-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio: adc: ad7793: Add missing error code in ad7793_setup()
iio: adc: ad7923: Fix undersized rx buffer.
iio: adc: ad7768-1: Fix too small buffer passed to iio_push_to_buffers_with_timestamp()
iio: dac: ad5770r: Put fwnode in error case during ->probe()
iio: gyro: fxas21002c: balance runtime power in error path
staging: emxx_udc: fix loop in _nbu2ss_nuke()
staging: iio: cdc: ad7746: avoid overwrite of num_channels
iio: adc: ad7192: handle regulator voltage error first
iio: adc: ad7192: Avoid disabling a clock that was never enabled.
iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers
iio: adc: ad7124: Fix missbalanced regulator enable / disable on error.
Linus Torvalds [Sat, 29 May 2021 16:25:16 +0000 (06:25 -1000)]
Merge tag 'tty-5.13-rc4' of git://git./linux/kernel/git/gregkh/tty
Pull tty / serial driver fixes from Greg KH:
"Here are some small fixes for reported problems for tty and serial
drivers for 5.13-rc4.
They consist of:
- 8250 bugfixes and new device support
- lockdown security mode fixup
- syzbot found problems fixed
- 8250_omap fix for interrupt storm
- revert of 8250_omap driver fix as it caused worse problem than the
original issue
All but the last patch have been in linux-next for a while, the last
one is a revert of a problem found in linux-next with the 8250_omap
driver change"
* tag 'tty-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "serial: 8250: 8250_omap: Fix possible interrupt storm"
serial: 8250_pci: handle FL_NOIRQ board flag
serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait'
serial: 8250_pci: Add support for new HPE serial device
serial: 8250: 8250_omap: Fix possible interrupt storm
serial: 8250: Use BIT(x) for UART_{CAP,BUG}_*
serial: 8250: Add UART_BUG_TXRACE workaround for Aspeed VUART
serial: 8250_dw: Add device HID for new AMD UART controller
serial: sh-sci: Fix off-by-one error in FIFO threshold register setting
serial: core: fix suspicious security_locked_down() call
serial: tegra: Fix a mask operation that is always true
Linus Torvalds [Sat, 29 May 2021 16:11:21 +0000 (06:11 -1000)]
Merge tag 'usb-5.13-rc4' of git://git./linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt fixes from Greg KH:
"Here are a number of tiny USB and Thunderbolt driver fixes for
5.13-rc4.
They consist of:
- thunderbolt fixes for some NVM bound issues
- xhci fixes for reported problems
- control-request fixups
- documentation build warning fixes
- new usb-serial driver device ids
- typec bugfixes for reported issues
- usbfs warning fixups (could be triggered from userspace)
- other tiny fixes for reported problems.
All of these have been in linux-next with no reported issues"
* tag 'usb-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (22 commits)
xhci: Fix 5.12 regression of missing xHC cache clearing command after a Stall
xhci: fix giving back URB with incorrect status regression in 5.12
usb: gadget: udc: renesas_usb3: Fix a race in usb3_start_pipen()
usb: typec: tcpm: Respond Not_Supported if no snk_vdo
usb: typec: tcpm: Properly interrupt VDM AMS
USB: trancevibrator: fix control-request direction
usb: Restore the usb_header label
usb: typec: tcpm: Use LE to CPU conversion when accessing msg->header
usb: typec: ucsi: Clear pending after acking connector change
usb: typec: mux: Fix matching with typec_altmode_desc
misc/uss720: fix memory leak in uss720_probe
usb: dwc3: gadget: Properly track pending and queued SG
USB: usbfs: Don't WARN about excessively large memory allocations
thunderbolt: usb4: Fix NVM read buffer bounds and offset issue
thunderbolt: dma_port: Fix NVM read buffer bounds and offset issue
usb: chipidea: udc: assign interrupt number to USB gadget structure
usb: cdnsp: Fix lack of removing request from pending list.
usb: cdns3: Fix runtime PM imbalance on error
USB: serial: pl2303: add device id for ADLINK ND-6530 GC
USB: serial: ti_usb_3410_5052: add startech.com device id
...
Linus Torvalds [Sat, 29 May 2021 16:02:25 +0000 (06:02 -1000)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"ARM fixes:
- Another state update on exit to userspace fix
- Prevent the creation of mixed 32/64 VMs
- Fix regression with irqbypass not restarting the guest on failed
connect
- Fix regression with debug register decoding resulting in
overlapping access
- Commit exception state on exit to usrspace
- Fix the MMU notifier return values
- Add missing 'static' qualifiers in the new host stage-2 code
x86 fixes:
- fix guest missed wakeup with assigned devices
- fix WARN reported by syzkaller
- do not use BIT() in UAPI headers
- make the kvm_amd.avic parameter bool
PPC fixes:
- make halt polling heuristics consistent with other architectures
selftests:
- various fixes
- new performance selftest memslot_perf_test
- test UFFD minor faults in demand_paging_test"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (44 commits)
selftests: kvm: fix overlapping addresses in memslot_perf_test
KVM: X86: Kill off ctxt->ud
KVM: X86: Fix warning caused by stale emulation context
KVM: X86: Use kvm_get_linear_rip() in single-step and #DB/#BP interception
KVM: x86/mmu: Fix comment mentioning skip_4k
KVM: VMX: update vcpu posted-interrupt descriptor when assigning device
KVM: rename KVM_REQ_PENDING_TIMER to KVM_REQ_UNBLOCK
KVM: x86: add start_assignment hook to kvm_x86_ops
KVM: LAPIC: Narrow the timer latency between wait_lapic_expire and world switch
selftests: kvm: do only 1 memslot_perf_test run by default
KVM: X86: Use _BITUL() macro in UAPI headers
KVM: selftests: add shared hugetlbfs backing source type
KVM: selftests: allow using UFFD minor faults for demand paging
KVM: selftests: create alias mappings when using shared memory
KVM: selftests: add shmem backing source type
KVM: selftests: refactor vm_mem_backing_src_type flags
KVM: selftests: allow different backing source types
KVM: selftests: compute correct demand paging size
KVM: selftests: simplify setup_demand_paging error handling
KVM: selftests: Print a message if /dev/kvm is missing
...
Linus Torvalds [Sat, 29 May 2021 15:51:53 +0000 (05:51 -1000)]
Merge tag 's390-5.13-3' of git://git./linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
"Fix races in vfio-ccw request handling"
* tag 's390-5.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
vfio-ccw: Serialize FSM IDLE state with I/O completion
vfio-ccw: Reset FSM state to IDLE inside FSM
vfio-ccw: Check initialized flag in cp_init()
Paolo Bonzini [Fri, 28 May 2021 19:10:58 +0000 (15:10 -0400)]
selftests: kvm: fix overlapping addresses in memslot_perf_test
vm_create allocates memory and maps it close to GPA. This memory
is separate from what is allocated in subsequent calls to
vm_userspace_mem_region_add, so it is incorrect to pass the
test memory size to vm_create_default. Just pass a small
fixed amount of memory which can be used later for page table,
otherwise GPAs are already allocated at MEM_GPA and the
test aborts.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Linus Torvalds [Sat, 29 May 2021 00:47:48 +0000 (14:47 -1000)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Ten small fixes, all in drivers"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: target: qla2xxx: Wait for stop_phase1 at WWN removal
scsi: hisi_sas: Drop free_irq() of devm_request_irq() allocated irq
scsi: vmw_pvscsi: Set correct residual data length
scsi: bnx2fc: Return failure if io_req is already in ABTS processing
scsi: aic7xxx: Remove multiple definition of globals
scsi: aic7xxx: Restore several defines for aic7xxx firmware build
scsi: target: iblock: Fix smp_processor_id() BUG messages
scsi: libsas: Use _safe() loop in sas_resume_port()
scsi: target: tcmu: Fix xarray RCU warning
scsi: target: core: Avoid smp_processor_id() in preemptible code
Linus Torvalds [Sat, 29 May 2021 00:42:37 +0000 (14:42 -1000)]
Merge tag 'block-5.13-2021-05-28' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request (Christoph):
- fix a memory leak in nvme_cdev_add (Guoqing Jiang)
- fix inline data size comparison in nvmet_tcp_queue_response (Hou
Pu)
- fix false keep-alive timeout when a controller is torn down
(Sagi Grimberg)
- fix a nvme-tcp Kconfig dependency (Sagi Grimberg)
- short-circuit reconnect retries for FC (Hannes Reinecke)
- decode host pathing error for connect (Hannes Reinecke)
- MD pull request (Song):
- Fix incorrect chunk boundary assert (Christoph)
- Fix s390/dasd verification panic (Stefan)
* tag 'block-5.13-2021-05-28' of git://git.kernel.dk/linux-block:
nvmet: fix false keep-alive timeout when a controller is torn down
nvmet-tcp: fix inline data size comparison in nvmet_tcp_queue_response
nvme-tcp: remove incorrect Kconfig dep in BLK_DEV_NVME
md/raid5: remove an incorrect assert in in_chunk_boundary
s390/dasd: add missing discipline function
nvme-fabrics: decode host pathing error for connect
nvme-fc: short-circuit reconnect retries
nvme: fix potential memory leaks in nvme_cdev_add
Linus Torvalds [Sat, 29 May 2021 00:35:55 +0000 (14:35 -1000)]
Merge tag 'io_uring-5.13-2021-05-28' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"A few minor fixes:
- Fix an issue with hashed wait removal on exit (Zqiang, Pavel)
- Fix a recent data race introduced in this series (Marco)"
* tag 'io_uring-5.13-2021-05-28' of git://git.kernel.dk/linux-block:
io_uring: fix data race to avoid potential NULL-deref
io-wq: Fix UAF when wakeup wqe in hash waitqueue
io_uring/io-wq: close io-wq full-stop gap
Linus Torvalds [Sat, 29 May 2021 00:28:58 +0000 (14:28 -1000)]
Merge tag 'drm-fixes-2021-05-29' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Pretty quiet this week, couple of amdgpu, one i915, and a few misc otherwise.
ttm:
- prevent irrelevant swapout
amdgpu:
- MultiGPU fan fix
- VCN powergating fixes
amdkfd:
- Fix SDMA register offset error
meson:
- fix shutdown crash
i915:
- Re-enable LTTPR non-transparent LT mode for DPCD_REV < 1.4"
* tag 'drm-fixes-2021-05-29' of git://anongit.freedesktop.org/drm/drm:
drm/ttm: Skip swapout if ttm object is not populated
drm/i915: Reenable LTTPR non-transparent LT mode for DPCD_REV<1.4
drm/meson: fix shutdown crash when component not probed
drm/amdgpu/jpeg3: add cancel_delayed_work_sync before power gate
drm/amdgpu/jpeg2.5: add cancel_delayed_work_sync before power gate
drm/amdgpu/jpeg2.0: add cancel_delayed_work_sync before power gate
drm/amdgpu/vcn3: add cancel_delayed_work_sync before power gate
drm/amdgpu/vcn2.5: add cancel_delayed_work_sync before power gate
drm/amdgpu/vcn2.0: add cancel_delayed_work_sync before power gate
drm/amdgpu/vcn1: add cancel_delayed_work_sync before power gate
drm/amdkfd: correct sienna_cichlid SDMA RLC register offset error
drm/amd/pm: correct MGpuFanBoost setting
Linus Torvalds [Sat, 29 May 2021 00:23:05 +0000 (14:23 -1000)]
Merge tag 'perf-tools-fixes-for-v5.13-2021-05-28' of git://git./linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Fix error checking of BPF prog attachment in 'perf stat'.
- Fix getting maximum number of fds in the vendor events JSON parser.
- Move debug initialization earlier, fixing a segfault in some cases.
- Fix eventcode of power10 JSON events.
* tag 'perf-tools-fixes-for-v5.13-2021-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
perf vendor events powerpc: Fix eventcode of power10 JSON events
perf stat: Fix error check for bpf_program__attach
perf debug: Move debug initialization earlier
perf jevents: Fix getting maximum number of fds
Linus Torvalds [Sat, 29 May 2021 00:15:47 +0000 (14:15 -1000)]
Merge tag '5.13-rc4-smb3' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Three SMB3 fixes.
Two for stable, and the other fixes a problem pointed out with a
recently added ioctl"
* tag '5.13-rc4-smb3' of git://git.samba.org/sfrench/cifs-2.6:
cifs: change format of CIFS_FULL_KEY_DUMP ioctl
cifs: fix string declarations and assignments in tracepoints
cifs: set server->cipher_type to AES-128-CCM for SMB3.0
Linus Torvalds [Fri, 28 May 2021 18:53:19 +0000 (08:53 -1000)]
Merge tag 'nfs-for-5.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
"Stable fixes:
- Fix v4.0/v4.1 SEEK_DATA return -ENOTSUPP when set NFS_V4_2 config
- Fix Oops in xs_tcp_send_request() when transport is disconnected
- Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
Bugfixes:
- Fix instances where signal_pending() should be fatal_signal_pending()
- fix an incorrect limit in filelayout_decode_layout()
- Fixes for the SUNRPC backlogged RPC queue
- Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()
- Revert commit
586a0787ce35 ("Clean up rpcrdma_prepare_readch()")"
* tag 'nfs-for-5.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
nfs: Remove trailing semicolon in macros
xprtrdma: Revert
586a0787ce35
NFSv4: Fix v4.0/v4.1 SEEK_DATA return -ENOTSUPP when set NFS_V4_2 config
NFS: Clean up reset of the mirror accounting variables
NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()
NFS: Fix an Oopsable condition in __nfs_pageio_add_request()
SUNRPC: More fixes for backlog congestion
SUNRPC: Fix Oops in xs_tcp_send_request() when transport is disconnected
NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
SUNRPC in case of backlog, hand free slots directly to waiting task
pNFS/NFSv4: Remove redundant initialization of 'rd_size'
NFS: fix an incorrect limit in filelayout_decode_layout()
fs/nfs: Use fatal_signal_pending instead of signal_pending
Linus Torvalds [Fri, 28 May 2021 18:47:50 +0000 (08:47 -1000)]
Merge tag 'sound-5.13-rc4' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A slightly high volume at this time due to pending ASoC fixes.
While there are a few generic simple-card fixes for regressions, most
of the changes are device-specific fixes: ASoC Intel SOF, codec
clocks, other codec / platform fixes as well as usual HD-audio and
USB-audio"
* tag 'sound-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (37 commits)
ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook Fury 17 G8
ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook Fury 15 G8
ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook G8
ALSA: hda/realtek: fix mute/micmute LEDs for HP 855 G8
ALSA: hda/realtek: Chain in pop reduction fixup for ThinkStation P340
ALSA: usb-audio: scarlett2: snd_scarlett_gen2_controls_create() can be static
ALSA: hda/realtek: the bass speaker can't output sound on Yoga 9i
ALSA: hda/realtek: Headphone volume is controlled by Front mixer
ALSA: usb-audio: scarlett2: Improve driver startup messages
ALSA: usb-audio: scarlett2: Fix device hang with ehci-pci
ALSA: usb-audio: fix control-request direction
ASoC: qcom: lpass-cpu: Use optional clk APIs
ASoC: cs35l33: fix an error code in probe()
ASoC: SOF: Intel: hda: don't send DAI_CONFIG IPC for older firmware
ASoC: fsl: fix SND_SOC_IMX_RPMSG dependency
ASoC: cs42l52: Minor tidy up of error paths
ASoC: cs35l32: Add missing regmap use_single config
ASoC: cs35l34: Add missing regmap use_single config
ASoC: cs42l73: Add missing regmap use_single config
ASoC: cs53l30: Add missing regmap use_single config
...
Linus Torvalds [Fri, 28 May 2021 18:31:48 +0000 (08:31 -1000)]
Merge tag 'clang-features-v5.13-rc4' of git://git./linux/kernel/git/kees/linux
Pull clang feature fixes from Kees Cook:
- Correctly pass stack frame size checking under LTO (Nick Desaulniers)
- Avoid CFI mismatches by checking initcall_t types (Marco Elver)
* tag 'clang-features-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
Makefile: LTO: have linker check -Wframe-larger-than
init: verify that function is initcall_t at compile-time
Linus Torvalds [Fri, 28 May 2021 18:24:13 +0000 (08:24 -1000)]
Merge tag 'mips-fixes_5.13_1' of git://git./linux/kernel/git/mips/linux
Pull MIPS fixes from Thomas Bogendoerfer:
- fix function/preempt trace hangs
- a few build fixes
* tag 'mips-fixes_5.13_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: Fix kernel hang under FUNCTION_GRAPH_TRACER and PREEMPT_TRACER
MIPS: ralink: export rt_sysc_membase for rt2880_wdt.c
MIPS: launch.h: add include guard to prevent build errors
MIPS: alchemy: xxs1500: add gpio-au1000.h header file
Paolo Bonzini [Fri, 28 May 2021 17:02:03 +0000 (13:02 -0400)]
Merge tag 'kvmarm-fixes-5.13-2' of git://git./linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 5.13, take #2
- Another state update on exit to userspace fix
- Prevent the creation of mixed 32/64 VMs
Wanpeng Li [Fri, 28 May 2021 00:01:37 +0000 (17:01 -0700)]
KVM: X86: Kill off ctxt->ud
ctxt->ud is consumed only by x86_decode_insn(), we can kill it off by
passing emulation_type to x86_decode_insn() and dropping ctxt->ud
altogether. Tracking that info in ctxt for literally one call is silly.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <
1622160097-37633-2-git-send-email-wanpengli@tencent.com>
Wanpeng Li [Fri, 28 May 2021 00:01:36 +0000 (17:01 -0700)]
KVM: X86: Fix warning caused by stale emulation context
Reported by syzkaller:
WARNING: CPU: 7 PID: 10526 at linux/arch/x86/kvm//x86.c:7621 x86_emulate_instruction+0x41b/0x510 [kvm]
RIP: 0010:x86_emulate_instruction+0x41b/0x510 [kvm]
Call Trace:
kvm_mmu_page_fault+0x126/0x8f0 [kvm]
vmx_handle_exit+0x11e/0x680 [kvm_intel]
vcpu_enter_guest+0xd95/0x1b40 [kvm]
kvm_arch_vcpu_ioctl_run+0x377/0x6a0 [kvm]
kvm_vcpu_ioctl+0x389/0x630 [kvm]
__x64_sys_ioctl+0x8e/0xd0
do_syscall_64+0x3c/0xb0
entry_SYSCALL_64_after_hwframe+0x44/0xae
Commit
4a1e10d5b5d8 ("KVM: x86: handle hardware breakpoints during emulation())
adds hardware breakpoints check before emulation the instruction and parts of
emulation context initialization, actually we don't have the EMULTYPE_NO_DECODE flag
here and the emulation context will not be reused. Commit
c8848cee74ff ("KVM: x86:
set ctxt->have_exception in x86_decode_insn()) triggers the warning because it
catches the stale emulation context has #UD, however, it is not during instruction
decoding which should result in EMULATION_FAILED. This patch fixes it by moving
the second part emulation context initialization into init_emulate_ctxt() and
before hardware breakpoints check. The ctxt->ud will be dropped by a follow-up
patch.
syzkaller source: https://syzkaller.appspot.com/x/repro.c?x=
134683fdd00000
Reported-by: syzbot+71271244f206d17f6441@syzkaller.appspotmail.com
Fixes:
4a1e10d5b5d8 (KVM: x86: handle hardware breakpoints during emulation)
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <
1622160097-37633-1-git-send-email-wanpengli@tencent.com>
Yuan Yao [Wed, 26 May 2021 06:38:28 +0000 (14:38 +0800)]
KVM: X86: Use kvm_get_linear_rip() in single-step and #DB/#BP interception
The kvm_get_linear_rip() handles x86/long mode cases well and has
better readability, __kvm_set_rflags() also use the paired
function kvm_is_linear_rip() to check the vcpu->arch.singlestep_rip
set in kvm_arch_vcpu_ioctl_set_guest_debug(), so change the
"CS.BASE + RIP" code in kvm_arch_vcpu_ioctl_set_guest_debug() and
handle_exception_nmi() to this one.
Signed-off-by: Yuan Yao <yuan.yao@intel.com>
Message-Id: <
20210526063828.1173-1-yuan.yao@linux.intel.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Sargun Dhillon [Mon, 17 May 2021 19:39:05 +0000 (12:39 -0700)]
Documentation: seccomp: Fix user notification documentation
The documentation had some previously incorrect information about how
userspace notifications (and responses) were handled due to a change
from a previously proposed patchset.
Signed-off-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Tycho Andersen <tycho@tycho.pizza>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Fixes:
6a21cc50f0c7 ("seccomp: add a return code to trap to userspace")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210517193908.3113-2-sargun@sargun.me
Lukas Bulwahn [Mon, 19 Apr 2021 06:18:09 +0000 (08:18 +0200)]
MAINTAINERS: adjust to removing i2c designware platform data
Commit
5a517b5bf687 ("i2c: designware: Get rid of legacy platform data")
removes ./include/linux/platform_data/i2c-designware.h, but misses to
adjust the SYNOPSYS DESIGNWARE I2C DRIVER section in MAINTAINERS.
Hence, ./scripts/get_maintainer.pl --self-test=patterns complains:
warning: no file matches F: include/linux/platform_data/i2c-designware.h
Remove the file entry to this removed file as well.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Kajol Jain [Tue, 25 May 2021 06:37:23 +0000 (12:07 +0530)]
perf vendor events powerpc: Fix eventcode of power10 JSON events
Fixed the eventcode values in the power10 JSON event files to prepend
"0x" since these are hexadecimal values.
The patch also changes the event description of the PM_EXEC_STALL_LOAD_FINISH
and PM_EXEC_STALL_NTC_FLUSH event and move some events to correct files.
Fixes:
32daa5d7899e ("perf vendor events: Initial JSON/events list for power10 platform")
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Reviewed-by: Paul A. Clarke <pc@us.ibm.com>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lore.kernel.org/lkml/20210525063723.1191514-1-kjain@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Greg Kroah-Hartman [Fri, 28 May 2021 08:58:49 +0000 (10:58 +0200)]
Revert "serial: 8250: 8250_omap: Fix possible interrupt storm"
This reverts commit
31fae7c8b18c3f8029a2a5dce97a3182c1a167a0.
Tony writes:
I just noticed this causes the following regression in Linux
next when pressing a key on uart console after boot at least on
omap3. This seems to happen on serial_port_in(port, UART_RX) in
the quirk handling.
So let's drop this.
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/YLCCJzkkB4N7LTQS@atomide.com
Fixes:
31fae7c8b18c ("serial: 8250: 8250_omap: Fix possible interrupt storm")
Reported-by: Tony Lindgren <tony@atomide.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Krzysztof Kozlowski [Wed, 26 May 2021 12:39:37 +0000 (08:39 -0400)]
i2c: s3c2410: fix possible NULL pointer deref on read message after write
Interrupt handler processes multiple message write requests one after
another, till the driver message queue is drained. However if driver
encounters a read message without preceding START, it stops the I2C
transfer as it is an invalid condition for the controller. At least the
comment describes a requirement "the controller forces us to send a new
START when we change direction". This stop results in clearing the
message queue (i2c->msg = NULL).
The code however immediately jumped back to label "retry_write" which
dereferenced the "i2c->msg" making it a possible NULL pointer
dereference.
The Coverity analysis:
1. Condition !is_msgend(i2c), taking false branch.
if (!is_msgend(i2c)) {
2. Condition !is_lastmsg(i2c), taking true branch.
} else if (!is_lastmsg(i2c)) {
3. Condition i2c->msg->flags & 1, taking true branch.
if (i2c->msg->flags & I2C_M_RD) {
4. write_zero_model: Passing i2c to s3c24xx_i2c_stop, which sets i2c->msg to NULL.
s3c24xx_i2c_stop(i2c, -EINVAL);
5. Jumping to label retry_write.
goto retry_write;
6. var_deref_model: Passing i2c to is_msgend, which dereferences null i2c->msg.
if (!is_msgend(i2c)) {"
All previous calls to s3c24xx_i2c_stop() in this interrupt service
routine are followed by jumping to end of function (acknowledging
the interrupt and returning). This seems a reasonable choice also here
since message buffer was entirely emptied.
Addresses-Coverity: Explicit null dereferenced
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Qii Wang [Thu, 27 May 2021 12:04:04 +0000 (20:04 +0800)]
i2c: mediatek: Disable i2c start_en and clear intr_stat brfore reset
The i2c controller driver do dma reset after transfer timeout,
but sometimes dma reset will trigger an unexpected DMA_ERR irq.
It will cause the i2c controller to continuously send interrupts
to the system and cause soft lock-up. So we need to disable i2c
start_en and clear intr_stat to stop i2c controller before dma
reset when transfer timeout.
Fixes:
aafced673c06("i2c: mediatek: move dma reset before i2c reset")
Signed-off-by: Qii Wang <qii.wang@mediatek.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Dave Airlie [Fri, 28 May 2021 03:28:18 +0000 (13:28 +1000)]
Merge tag 'drm-intel-fixes-2021-05-27' of ssh://git.freedesktop.org/git/drm/drm-intel into drm-fixes
drm/i915 fixes for v5.13-rc4:
- Re-enable LTTPR non-transparent LT mode for DPCD_REV<1.4
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/875yz4bnmj.fsf@intel.com
Dave Airlie [Fri, 28 May 2021 03:24:25 +0000 (13:24 +1000)]
Merge tag 'drm-misc-fixes-2021-05-27' of ssh://git.freedesktop.org/git/drm/drm-misc into drm-fixes
A fix in meson for a crash at shutdown and one for TTM to prevent
irrelevant swapout
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210527120828.3w7f53krzkslc4ii@gilmour
Namhyung Kim [Thu, 27 May 2021 22:00:52 +0000 (15:00 -0700)]
perf stat: Fix error check for bpf_program__attach
It seems the bpf_program__attach() returns a negative error code instead
of a NULL pointer in case of error.
Fixes:
7fac83aaf2ee ("perf stat: Introduce 'bperf' to share hardware PMCs with BPF")
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Link: http://lore.kernel.org/lkml/20210527220052.1657578-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Dave Airlie [Thu, 27 May 2021 23:18:04 +0000 (09:18 +1000)]
Merge tag 'amd-drm-fixes-5.13-2021-05-26' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-5.13-2021-05-26:
amdgpu:
- MultiGPU fan fix
- VCN powergating fixes
amdkfd:
- Fix SDMA register offset error
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210527031831.4057-1-alexander.deucher@amd.com
Linus Torvalds [Thu, 27 May 2021 22:01:26 +0000 (12:01 -1000)]
Merge branch 'for-5.13-fixes' of git://git./linux/kernel/git/dennis/percpu
Pull percpu fixes from Dennis Zhou:
"This contains a cleanup to lib/percpu-refcount.c and an update to the
MAINTAINERS file to more formally take over support for lib/percpu*"
* 'for-5.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
MAINTAINERS: Add lib/percpu* as part of percpu entry
percpu_ref: Don't opencode percpu_ref_is_dying
Linus Torvalds [Thu, 27 May 2021 21:58:26 +0000 (11:58 -1000)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Don't use contiguous or block mappings for the linear map when KFENCE
is enabled.
- Fix link in the arch_counter_enforce_ordering() comment.
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mm: don't use CON and BLK mapping if KFENCE is enabled
arm64: Fix stale link in the arch_counter_enforce_ordering() comment
Linus Torvalds [Thu, 27 May 2021 21:54:36 +0000 (11:54 -1000)]
Merge tag 'for-5.13/dm-fixes-2' of git://git./linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- Fix DM verity target's 'require_signatures' module_param permissions.
- Revert DM snapshot fix from v5.13-rc3 and then properly fix crash
when an origin has no snapshots. This allows only the proper fix to
go to stable@ (since the original fix was successfully dropped).
* tag 'for-5.13/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm snapshot: properly fix a crash when an origin has no snapshots
dm snapshot: revert "fix a crash when an origin has no snapshots"
dm verity: fix require_signatures module_param permissions
Aurelien Aptel [Fri, 21 May 2021 15:19:28 +0000 (17:19 +0200)]
cifs: change format of CIFS_FULL_KEY_DUMP ioctl
Make CIFS_FULL_KEY_DUMP ioctl able to return variable-length keys.
* userspace needs to pass the struct size along with optional
session_id and some space at the end to store keys
* if there is enough space kernel returns keys in the extra space and
sets the length of each key via xyz_key_length fields
This also fixes the build error for get_user() on ARM.
Sample program:
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
struct smb3_full_key_debug_info {
uint32_t in_size;
uint64_t session_id;
uint16_t cipher_type;
uint8_t session_key_length;
uint8_t server_in_key_length;
uint8_t server_out_key_length;
uint8_t data[];
/*
* return this struct with the keys appended at the end:
* uint8_t session_key[session_key_length];
* uint8_t server_in_key[server_in_key_length];
* uint8_t server_out_key[server_out_key_length];
*/
} __attribute__((packed));
#define CIFS_IOCTL_MAGIC 0xCF
#define CIFS_DUMP_FULL_KEY _IOWR(CIFS_IOCTL_MAGIC, 10, struct smb3_full_key_debug_info)
void dump(const void *p, size_t len) {
const char *hex = "
0123456789ABCDEF";
const uint8_t *b = p;
for (int i = 0; i < len; i++)
printf("%c%c ", hex[(b[i]>>4)&0xf], hex[b[i]&0xf]);
putchar('\n');
}
int main(int argc, char **argv)
{
struct smb3_full_key_debug_info *keys;
uint8_t buf[sizeof(*keys)+1024] = {0};
size_t off = 0;
int fd, rc;
keys = (struct smb3_full_key_debug_info *)&buf;
keys->in_size = sizeof(buf);
fd = open(argv[1], O_RDONLY);
if (fd < 0)
perror("open"), exit(1);
rc = ioctl(fd, CIFS_DUMP_FULL_KEY, keys);
if (rc < 0)
perror("ioctl"), exit(1);
printf("SessionId ");
dump(&keys->session_id, 8);
printf("Cipher %04x\n", keys->cipher_type);
printf("SessionKey ");
dump(keys->data+off, keys->session_key_length);
off += keys->session_key_length;
printf("ServerIn Key ");
dump(keys->data+off, keys->server_in_key_length);
off += keys->server_in_key_length;
printf("ServerOut Key ");
dump(keys->data+off, keys->server_out_key_length);
return 0;
}
Usage:
$ gcc -o dumpkeys dumpkeys.c
Against Windows Server 2020 preview (with AES-256-GCM support):
# mount.cifs //$ip/test /mnt -o "username=administrator,password=foo,vers=3.0,seal"
# ./dumpkeys /mnt/somefile
SessionId 0D 00 00 00 00 0C 00 00
Cipher 0002
SessionKey AB CD CC 0D E4 15 05 0C 6F 3C 92 90 19 F3 0D 25
ServerIn Key 73 C6 6A C8 6B 08 CF A2 CB 8E A5 7D 10 D1 5B DC
ServerOut Key 6D 7E 2B A1 71 9D D7 2B 94 7B BA C4 F0 A5 A4 F8
# umount /mnt
With 256 bit keys:
# echo 1 > /sys/module/cifs/parameters/require_gcm_256
# mount.cifs //$ip/test /mnt -o "username=administrator,password=foo,vers=3.11,seal"
# ./dumpkeys /mnt/somefile
SessionId 09 00 00 00 00 0C 00 00
Cipher 0004
SessionKey 93 F5 82 3B 2F B7 2A 50 0B B9 BA 26 FB 8C 8B 03
ServerIn Key 6C 6A 89 B2 CB 7B 78 E8 04 93 37 DA 22 53 47 DF B3 2C 5F 02 26 70 43 DB 8D 33 7B DC 66 D3 75 A9
ServerOut Key 04 11 AA D7 52 C7 A8 0F ED E3 93 3A 65 FE 03 AD 3F 63 03 01 2B C0 1B D7 D7 E5 52 19 7F CC 46 B4
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Jean Delvare [Tue, 25 May 2021 15:03:36 +0000 (17:03 +0200)]
i2c: i801: Don't generate an interrupt on bus reset
Now that the i2c-i801 driver supports interrupts, setting the KILL bit
in a attempt to recover from a timed out transaction triggers an
interrupt. Unfortunately, the interrupt handler (i801_isr) is not
prepared for this situation and will try to process the interrupt as
if it was signaling the end of a successful transaction. In the case
of a block transaction, this can result in an out-of-range memory
access.
This condition was reproduced several times by syzbot:
https://syzkaller.appspot.com/bug?extid=
ed71512d469895b5b34e
https://syzkaller.appspot.com/bug?extid=
8c8dedc0ba9e03f6c79e
https://syzkaller.appspot.com/bug?extid=
c8ff0b6d6c73d81b610e
https://syzkaller.appspot.com/bug?extid=
33f6c360821c399d69eb
https://syzkaller.appspot.com/bug?extid=
be15dc0b1933f04b043a
https://syzkaller.appspot.com/bug?extid=
b4d3fd1dfd53e90afd79
So disable interrupts while trying to reset the bus. Interrupts will
be enabled again for the following transaction.
Fixes:
636752bcb517 ("i2c-i801: Enable IRQ for SMBus transactions")
Reported-by: syzbot+b4d3fd1dfd53e90afd79@syzkaller.appspotmail.com
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Chris Packham [Tue, 11 May 2021 21:20:52 +0000 (09:20 +1200)]
i2c: mpc: implement erratum A-004447 workaround
The P2040/P2041 has an erratum where the normal i2c recovery mechanism
does not work. Implement the alternative recovery mechanism documented
in the P2040 Chip Errata Rev Q.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Chris Packham [Tue, 11 May 2021 21:20:51 +0000 (09:20 +1200)]
powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
The i2c controllers on the P1010 have an erratum where the documented
scheme for i2c bus recovery will not work (A-004447). A different
mechanism is needed which is documented in the P1010 Chip Errata Rev L.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Chris Packham [Tue, 11 May 2021 21:20:50 +0000 (09:20 +1200)]
powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
The i2c controllers on the P2040/P2041 have an erratum where the
documented scheme for i2c bus recovery will not work (A-004447). A
different mechanism is needed which is documented in the P2040 Chip
Errata Rev Q (latest available at the time of writing).
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Chris Packham [Tue, 11 May 2021 21:20:49 +0000 (09:20 +1200)]
dt-bindings: i2c: mpc: Add fsl,i2c-erratum-a004447 flag
Document the fsl,i2c-erratum-a004447 flag which indicates the presence
of an i2c erratum on some QorIQ SoCs.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Lee Jones [Thu, 20 May 2021 19:01:03 +0000 (20:01 +0100)]
i2c: busses: i2c-stm32f4: Remove incorrectly placed ' ' from function name
Fixes the following W=1 kernel build warning(s):
drivers/i2c/busses/i2c-stm32f4.c:321: warning: expecting prototype for stm32f4_i2c_write_ byte()(). Prototype was for stm32f4_i2c_write_byte() instead
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Lee Jones [Thu, 20 May 2021 19:01:02 +0000 (20:01 +0100)]
i2c: busses: i2c-st: Fix copy/paste function misnaming issues
Fixes the following W=1 kernel build warning(s):
drivers/i2c/busses/i2c-st.c:531: warning: expecting prototype for st_i2c_handle_write(). Prototype was for st_i2c_handle_read() instead
drivers/i2c/busses/i2c-st.c:566: warning: expecting prototype for st_i2c_isr(). Prototype was for st_i2c_isr_thread() instead
Fix the "enmpty" typo while here.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Lee Jones [Thu, 20 May 2021 19:01:00 +0000 (20:01 +0100)]
i2c: busses: i2c-pnx: Provide descriptions for 'alg_data' data structure
Fixes the following W=1 kernel build warning(s):
drivers/i2c/busses/i2c-pnx.c:147: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_start'
drivers/i2c/busses/i2c-pnx.c:147: warning: Excess function parameter 'adap' description in 'i2c_pnx_start'
drivers/i2c/busses/i2c-pnx.c:202: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_stop'
drivers/i2c/busses/i2c-pnx.c:202: warning: Excess function parameter 'adap' description in 'i2c_pnx_stop'
drivers/i2c/busses/i2c-pnx.c:231: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_master_xmit'
drivers/i2c/busses/i2c-pnx.c:231: warning: Excess function parameter 'adap' description in 'i2c_pnx_master_xmit'
drivers/i2c/busses/i2c-pnx.c:301: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_master_rcv'
drivers/i2c/busses/i2c-pnx.c:301: warning: Excess function parameter 'adap' description in 'i2c_pnx_master_rcv'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Lee Jones [Thu, 20 May 2021 19:00:59 +0000 (20:00 +0100)]
i2c: busses: i2c-ocores: Place the expected function names into the documentation headers
Fixes the following W=1 kernel build warning(s):
drivers/i2c/busses/i2c-ocores.c:253: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
drivers/i2c/busses/i2c-ocores.c:267: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
drivers/i2c/busses/i2c-ocores.c:299: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
drivers/i2c/busses/i2c-ocores.c:347: warning: expecting prototype for It handles an IRQ(). Prototype was for ocores_process_polling() instead
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Lee Jones [Thu, 20 May 2021 19:00:57 +0000 (20:00 +0100)]
i2c: busses: i2c-eg20t: Fix 'bad line' issue and provide description for 'msgs' param
Fixes the following W=1 kernel build warning(s):
drivers/i2c/busses/i2c-eg20t.c:151: warning: bad line: PCH i2c controller
drivers/i2c/busses/i2c-eg20t.c:369: warning: Function parameter or member 'msgs' not described in 'pch_i2c_writebytes'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Lee Jones [Thu, 20 May 2021 19:00:56 +0000 (20:00 +0100)]
i2c: busses: i2c-designware-master: Fix misnaming of 'i2c_dw_init_master()'
Fixes the following W=1 kernel build warning(s):
drivers/i2c/busses/i2c-designware-master.c:176: warning: expecting prototype for i2c_dw_init(). Prototype was for i2c_dw_init_master() instead
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Lee Jones [Thu, 20 May 2021 19:00:55 +0000 (20:00 +0100)]
i2c: busses: i2c-cadence: Fix incorrectly documented 'enum cdns_i2c_slave_mode'
Fixes the following W=1 kernel build warning(s):
drivers/i2c/busses/i2c-cadence.c:157: warning: expecting prototype for enum cdns_i2c_slave_mode. Prototype was for enum cdns_i2c_slave_state instead
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Lee Jones [Thu, 20 May 2021 19:00:52 +0000 (20:00 +0100)]
i2c: busses: i2c-ali1563: File headers are not good candidates for kernel-doc
Fixes the following W=1 kernel build warning(s):
drivers/i2c/busses/i2c-ali1563.c:24: warning: expecting prototype for i2c(). Prototype was for ALI1563_MAX_TIMEOUT() instead
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Lee Jones [Thu, 20 May 2021 19:00:51 +0000 (20:00 +0100)]
i2c: muxes: i2c-arb-gpio-challenge: Demote non-conformant kernel-doc headers
Fixes the following W=1 kernel build warning(s):
drivers/i2c/muxes/i2c-arb-gpio-challenge.c:43: warning: Function parameter or member 'muxc' not described in 'i2c_arbitrator_select'
drivers/i2c/muxes/i2c-arb-gpio-challenge.c:43: warning: Function parameter or member 'chan' not described in 'i2c_arbitrator_select'
drivers/i2c/muxes/i2c-arb-gpio-challenge.c:86: warning: Function parameter or member 'muxc' not described in 'i2c_arbitrator_deselect'
drivers/i2c/muxes/i2c-arb-gpio-challenge.c:86: warning: Function parameter or member 'chan' not described in 'i2c_arbitrator_deselect'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Lee Jones [Thu, 20 May 2021 19:00:50 +0000 (20:00 +0100)]
i2c: busses: i2c-nomadik: Fix formatting issue pertaining to 'timeout'
Fixes the following W=1 kernel build warning(s):
drivers/i2c/busses/i2c-nomadik.c:184: warning: Function parameter or member 'timeout' not described in 'nmk_i2c_dev'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Shyam Prasad N [Fri, 21 May 2021 06:35:52 +0000 (06:35 +0000)]
cifs: fix string declarations and assignments in tracepoints
We missed using the variable length string macros in several
tracepoints. Fixed them in this change.
There's probably more useful macros that we can use to print
others like flags etc. But I'll submit sepawrate patches for
those at a future date.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Cc: <stable@vger.kernel.org> # v5.12
Signed-off-by: Steve French <stfrench@microsoft.com>
Aurelien Aptel [Fri, 21 May 2021 15:19:27 +0000 (17:19 +0200)]
cifs: set server->cipher_type to AES-128-CCM for SMB3.0
SMB3.0 doesn't have encryption negotiate context but simply uses
the SMB2_GLOBAL_CAP_ENCRYPTION flag.
When that flag is present in the neg response cifs.ko uses AES-128-CCM
which is the only cipher available in this context.
cipher_type was set to the server cipher only when parsing encryption
negotiate context (SMB3.1.1).
For SMB3.0 it was set to 0. This means cipher_type value can be 0 or 1
for AES-128-CCM.
Fix this by checking for SMB3.0 and encryption capability and setting
cipher_type appropriately.
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Linus Torvalds [Thu, 27 May 2021 18:39:05 +0000 (08:39 -1000)]
Merge tag 'acpi-5.13-rc4' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Fix a recent ACPI power management regression causing boot issues to
occur on some systems due to attempts to turn off ACPI power resources
that are already off (which should work according to the ACPI
specification)"
* tag 'acpi-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: power: Refine turning off unused power resources
Linus Torvalds [Thu, 27 May 2021 18:06:36 +0000 (08:06 -1000)]
Merge tag 'iommu-fixes-v5.13-rc3' of git://git./linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- Important fix for the AMD IOMMU driver in the recently added
page-specific invalidation code to fix a calculation.
- Fix a NULL-ptr dereference in the AMD IOMMU driver when a device
switches domain types.
- Fixes for the Intel VT-d driver to check for allocation failure and
do correct cleanup.
- Another fix for Intel VT-d to not allow supervisor page requests from
devices when using second level page translation.
- Add a MODULE_DEVICE_TABLE to the VIRTIO IOMMU driver
* tag 'iommu-fixes-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/vt-d: Fix sysfs leak in alloc_iommu()
iommu/vt-d: Use user privilege for RID2PASID translation
iommu/vt-d: Check for allocation failure in aux_detach_device()
iommu/virtio: Add missing MODULE_DEVICE_TABLE
iommu/amd: Fix wrong parentheses on page-specific invalidations
iommu/amd: Clear DMA ops when switching domain
Ian Rogers [Wed, 19 May 2021 16:44:47 +0000 (09:44 -0700)]
perf debug: Move debug initialization earlier
This avoids segfaults during option handlers that use pr_err. For
example, "perf --debug nopager list" segfaults before this change.
Fixes:
8abceacff87d (perf debug: Add debug_set_file function)
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210519164447.2672030-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
David Howells [Thu, 27 May 2021 10:24:33 +0000 (11:24 +0100)]
afs: Fix the nlink handling of dir-over-dir rename
Fix rename of one directory over another such that the nlink on the deleted
directory is cleared to 0 rather than being decremented to 1.
This was causing the generic/035 xfstest to fail.
Fixes:
e49c7b2f6de7 ("afs: Build an abstraction around an "operation" concept")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/162194384460.3999479.7605572278074191079.stgit@warthog.procyon.org.uk/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dave Chinner [Thu, 27 May 2021 15:11:01 +0000 (08:11 -0700)]
xfs: bunmapi has unnecessary AG lock ordering issues
large directory block size operations are assert failing because
xfs_bunmapi() is not completely removing fragmented directory blocks
like so:
XFS: Assertion failed: done, file: fs/xfs/libxfs/xfs_dir2.c, line: 677
....
Call Trace:
xfs_dir2_shrink_inode+0x1a8/0x210
xfs_dir2_block_to_sf+0x2ae/0x410
xfs_dir2_block_removename+0x21a/0x280
xfs_dir_removename+0x195/0x1d0
xfs_rename+0xb79/0xc50
? avc_has_perm+0x8d/0x1a0
? avc_has_perm_noaudit+0x9a/0x120
xfs_vn_rename+0xdb/0x150
vfs_rename+0x719/0xb50
? __lookup_hash+0x6a/0xa0
do_renameat2+0x413/0x5e0
__x64_sys_rename+0x45/0x50
do_syscall_64+0x3a/0x70
entry_SYSCALL_64_after_hwframe+0x44/0xae
We are aborting the bunmapi() pass because of this specific chunk of
code:
/*
* Make sure we don't touch multiple AGF headers out of order
* in a single transaction, as that could cause AB-BA deadlocks.
*/
if (!wasdel && !isrt) {
agno = XFS_FSB_TO_AGNO(mp, del.br_startblock);
if (prev_agno != NULLAGNUMBER && prev_agno > agno)
break;
prev_agno = agno;
}
This is designed to prevent deadlocks in AGF locking when freeing
multiple extents by ensuring that we only ever lock in increasing
AG number order. Unfortunately, this also violates the "bunmapi will
always succeed" semantic that some high level callers depend on,
such as xfs_dir2_shrink_inode(), xfs_da_shrink_inode() and
xfs_inactive_symlink_rmt().
This AG lock ordering was introduced back in 2017 to fix deadlocks
triggered by generic/299 as reported here:
https://lore.kernel.org/linux-xfs/
800468eb-3ded-9166-20a4-
047de8018582@gmail.com/
This codebase is old enough that it was before we were defering all
AG based extent freeing from within xfs_bunmapi(). THat is, we never
actually lock AGs in xfs_bunmapi() any more - every non-rt based
extent free is added to the defer ops list, as is all BMBT block
freeing. And RT extents are not RT based, so there's no lock
ordering issues associated with them.
Hence this AGF lock ordering code is both broken and dead. Let's
just remove it so that the large directory block code works reliably
again.
Tested against xfs/538 and generic/299 which is the original test
that exposed the deadlocks that this code fixed.
Fixes:
5b094d6dac04 ("xfs: fix multi-AG deadlock in xfs_bunmapi")
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Dave Chinner [Thu, 27 May 2021 02:57:42 +0000 (19:57 -0700)]
xfs: btree format inode forks can have zero extents
xfs/538 is assert failing with this trace when testing with
directory block sizes of 64kB:
XFS: Assertion failed: !xfs_need_iread_extents(ifp), file: fs/xfs/libxfs/xfs_bmap.c, line: 608
....
Call Trace:
xfs_bmap_btree_to_extents+0x2a9/0x470
? kmem_cache_alloc+0xe7/0x220
__xfs_bunmapi+0x4ca/0xdf0
xfs_bunmapi+0x1a/0x30
xfs_dir2_shrink_inode+0x71/0x210
xfs_dir2_block_to_sf+0x2ae/0x410
xfs_dir2_block_removename+0x21a/0x280
xfs_dir_removename+0x195/0x1d0
xfs_remove+0x244/0x460
xfs_vn_unlink+0x53/0xa0
? selinux_inode_unlink+0x13/0x20
vfs_unlink+0x117/0x220
do_unlinkat+0x1a2/0x2d0
__x64_sys_unlink+0x42/0x60
do_syscall_64+0x3a/0x70
entry_SYSCALL_64_after_hwframe+0x44/0xae
This is a check to ensure that the extents have been read into
memory before we are doing a ifork btree manipulation. This assert
is bogus in the above case.
We have a fragmented directory block that has more extents in it
than can fit in extent format, so the inode data fork is in btree
format. xfs_dir2_shrink_inode() asks to remove all remaining 16
filesystem blocks from the inode so it can convert to short form,
and __xfs_bunmapi() removes all the extents. We now have a data fork
in btree format but have zero extents in the fork. This incorrectly
trips the xfs_need_iread_extents() assert because it assumes that an
empty extent btree means the extent tree has not been read into
memory yet. This is clearly not the case with xfs_bunmapi(), as it
has an explicit call to xfs_iread_extents() in it to pull the
extents into memory before it starts unmapping.
Also, the assert directly after this bogus one is:
ASSERT(ifp->if_format == XFS_DINODE_FMT_BTREE);
Which covers the context in which it is legal to call
xfs_bmap_btree_to_extents just fine. Hence we should just remove the
bogus assert as it is clearly wrong and causes a regression.
The returns the test behaviour to the pre-existing assert failure in
xfs_dir2_shrink_inode() that indicates xfs_bunmapi() has failed to
remove all the extents in the range it was asked to unmap.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Rolf Eike Beer [Tue, 25 May 2021 07:08:02 +0000 (15:08 +0800)]
iommu/vt-d: Fix sysfs leak in alloc_iommu()
iommu_device_sysfs_add() is called before, so is has to be cleaned on subsequent
errors.
Fixes:
39ab9555c2411 ("iommu: Add sysfs bindings for struct iommu_device")
Cc: stable@vger.kernel.org # 4.11.x
Signed-off-by: Rolf Eike Beer <eb@emlix.com>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/17411490.HIIP88n32C@mobilepool36.emlix.com
Link: https://lore.kernel.org/r/20210525070802.361755-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Marco Elver [Thu, 27 May 2021 09:25:48 +0000 (11:25 +0200)]
io_uring: fix data race to avoid potential NULL-deref
Commit
ba5ef6dc8a82 ("io_uring: fortify tctx/io_wq cleanup") introduced
setting tctx->io_wq to NULL a bit earlier. This has caused KCSAN to
detect a data race between accesses to tctx->io_wq:
write to 0xffff88811d8df330 of 8 bytes by task 3709 on cpu 1:
io_uring_clean_tctx fs/io_uring.c:9042 [inline]
__io_uring_cancel fs/io_uring.c:9136
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit kernel/exit.c:781
do_group_exit kernel/exit.c:923
get_signal kernel/signal.c:2835
arch_do_signal_or_restart arch/x86/kernel/signal.c:789
handle_signal_work kernel/entry/common.c:147 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
...
read to 0xffff88811d8df330 of 8 bytes by task 6412 on cpu 0:
io_uring_try_cancel_iowq fs/io_uring.c:8911 [inline]
io_uring_try_cancel_requests fs/io_uring.c:8933
io_ring_exit_work fs/io_uring.c:8736
process_one_work kernel/workqueue.c:2276
...
With the config used, KCSAN only reports data races with value changes:
this implies that in the case here we also know that tctx->io_wq was
non-NULL. Therefore, depending on interleaving, we may end up with:
[CPU 0] | [CPU 1]
io_uring_try_cancel_iowq() | io_uring_clean_tctx()
if (!tctx->io_wq) // false | ...
... | tctx->io_wq = NULL
io_wq_cancel_cb(tctx->io_wq, ...) | ...
-> NULL-deref |
Note: It is likely that thus far we've gotten lucky and the compiler
optimizes the double-read into a single read into a register -- but this
is never guaranteed, and can easily change with a different config!
Fix the data race by restoring the previous behaviour, where both
setting io_wq to NULL and put of the wq are _serialized_ after
concurrent io_uring_try_cancel_iowq() via acquisition of the uring_lock
and removal of the node in io_uring_del_task_file().
Fixes:
ba5ef6dc8a82 ("io_uring: fortify tctx/io_wq cleanup")
Suggested-by: Pavel Begunkov <asml.silence@gmail.com>
Reported-by: syzbot+bf2b3d0435b9b728946c@syzkaller.appspotmail.com
Signed-off-by: Marco Elver <elver@google.com>
Cc: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/20210527092547.2656514-1-elver@google.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Thu, 27 May 2021 13:38:12 +0000 (07:38 -0600)]
Merge tag 'nvme-5.13-2021-05-27' of git://git.infradead.org/nvme into block-5.13
Pull NVMe fixes from Christoph:
"nvme fixes for Linux 5.13
- fix a memory leak in nvme_cdev_add (Guoqing Jiang)
- fix inline data size comparison in nvmet_tcp_queue_response (Hou Pu)
- fix false keep-alive timeout when a controller is torn down
(Sagi Grimberg)
- fix a nvme-tcp Kconfig dependency (Sagi Grimberg)
- short-circuit reconnect retries for FC (Hannes Reinecke)
- decode host pathing error for connect (Hannes Reinecke)"
* tag 'nvme-5.13-2021-05-27' of git://git.infradead.org/nvme:
nvmet: fix false keep-alive timeout when a controller is torn down
nvmet-tcp: fix inline data size comparison in nvmet_tcp_queue_response
nvme-tcp: remove incorrect Kconfig dep in BLK_DEV_NVME
nvme-fabrics: decode host pathing error for connect
nvme-fc: short-circuit reconnect retries
nvme: fix potential memory leaks in nvme_cdev_add
Christian Gmeiner [Thu, 27 May 2021 09:54:40 +0000 (11:54 +0200)]
serial: 8250_pci: handle FL_NOIRQ board flag
In commit
8428413b1d14 ("serial: 8250_pci: Implement MSI(-X) support")
the way the irq gets allocated was changed. With that change the
handling FL_NOIRQ got lost. Restore the old behaviour.
Fixes:
8428413b1d14 ("serial: 8250_pci: Implement MSI(-X) support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Link: https://lore.kernel.org/r/20210527095529.26281-1-christian.gmeiner@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Huilong Deng [Fri, 21 May 2021 14:07:37 +0000 (22:07 +0800)]
nfs: Remove trailing semicolon in macros
Macros should not use a trailing semicolon.
Signed-off-by: Huilong Deng <denghuilong@cdjrlc.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>