[Why]
Incorrect values were resulting in flash lines
when MPO was enabled and system was left idle.
[How]
Increase min clk values only when MPO is enabled
and display is active to not affect S3 power.
Signed-off-by: Pratik Vishwakarma <Pratik.Vishwakarma@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Toggle on/off gfxoff during video playback to fix gpu hang.
v2: change sequence to be more compatible with original code.
Signed-off-by: Jiansong Chen <Jiansong.Chen@amd.com>
Reviewed-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Recout calculation does not corrrectly handle plane
clip rect that extends beyond the left most border
of stream source rect. This change adds handling by
truncating the invisible clip rect.
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Header Changes]
- Add command for retrieving PSR residency
- Add command for forcing PSR static
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
If we have more than 4 displays we will run
into dummy irq calls or flip timout issues.
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
Fail and restart timing for HDCP1 retry occurs too quickly.
This would cause some MST monitors to show black screen.
[How]
Adjusted timing of fail and restart to 200ms.
Signed-off-by: Jake Wang <haonan.wang2@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
Commit "Blank HUBP during pixel data blank for DCN30 v2"
modifies HW behaviour during blank, which might have OS
dependencies. We need to assess the impact on amdgpu_dm
and only re-enable HUBP blanking when all necessary
changes are understood.
[How]
- revert functional changes
- leave architectural changes intact
Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
Customer make a request to add this WA by driver.
Some MUX chips will power down with eDP 1.4 panel and
lose previous supported link rates(DPCD 0x010) in
customer's hybrid-GPU designs. As a result, during sleep
resuming and screen turns on from idle, link training
will be performed incorrectly and eDP will flicker or
black screen. These MUX chips need source to read DPCD
0x010 again during LKT so that it can restore supported
link rates of panel.
For driver side, supported link rate set is fetched when
link detection, no need to update but just read again
as WA.
[How]
Read DPCD 0x010 again during link training for eDP 1.4.
Signed-off-by: Dale Zhao <dale.zhao@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[why]
Currently, we only support calculating CRC on whole frame.
We want to extend the capability to calculate CRC on
specific frame area.
[how]
Calculate CRC on specific area once it's specified from the
input parameter.
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[why]
There is a DRM_ERROR when the dc_sink is NULL and
there should not be this warning when the connector
is forced.
[how]
Do not warn if dc_sink is NULL if the connector
is forced.
Signed-off-by: Victor Lu <victorchengchi.lu@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
Prior commit "Blank HUBP during pixel data blank for DCN30"
missed the call to set_disp_pattern_generator from
set_crtc_test_pattern, which re-exposed the issue for which
we initially blocked active-only p-state switching.
[How]
- remove dcn30_blank_pixel_data, set dcn30 back to dcn20 version
- new hwss funciton set_disp_pattern_generator
- dcn20 version just calls opp_set_disp_pattern_generator
- dcn30 version implements the HUBP blank
Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
When checking if we want to disable GSL or not,
we should reset flip_immediate to be the flip type
of the topmost plane before looping through the
other planes.
[How]
Set flip_immediate to be the flip type of the topmost
plane before looping through the other planes.
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
We want to trigger atomic check on connector when
DSC debugfs properties are changed. The previous
method was reverted because it accessed connector
properties unsafely and would also heavily
impact performance.
[How]
Add a flag for forcing DSC update in CRTC state
and add connector to the state if the flag is set.
Signed-off-by: Eryk Brol <eryk.brol@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
The current end of T9 delay is relay on polling
sink status by DPCD. But the polling for sink
status change after NoVideoStream_flag set to 0.
[How]
Add function edp_add_delay_for_T9 to add T9 delay.
Move the sink status polling after blank.
Signed-off-by: Hugo Hu <hugo.hu@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
The OPTC memory blocks should be powered down when they are not in use.
This will reduce power consumption.
[How]
1. Set ODM_MEM_UNASSIGNED_PWR_MODE to shutdown memory when unassigned
2. Set ODM_MEM_VBLANK_PWR_MODE to light sleep mode when in vblank
3. Added a debug option to allow this behaviour to be turned off
4. Restructured debug options to use a bitfield in a way that's more clear
Signed-off-by: Jacky Liao <ziyu.liao@amd.com>
Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
Incorrect panel register settings are
applied for power sequence because the
register macro is not defined in resource.
[How]
Implement same register space to future
resource files.
Signed-off-by: Chris Park <Chris.Park@amd.com>
Reviewed-by: Joshua Aberback <Joshua.Aberback@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[why]
If pbn_per_slot is 0, fail instead of dividing by zero and
bugchecking.
[how]
Check for zero divisor before division operation.
Signed-off-by: Ashley Thomas <Ashley.Thomas2@amd.com>
Reviewed-by: Wyatt Wood <Wyatt.Wood@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
There are some timings for which we support p-state
switching in active, but not in blank. There was a
previous issue where a timing that had active-only
support would hang a p-state request when we were in
an extended blanking period. The workaround for that
issue was to block active-only p-state switching,
but that resulted in a lack of p-state support for
some common timings such as 1440p60. We want to fix
that issue properly by un-blocking p-state requests
while the display is blanked, so that we can re-enable
active-only p-state switching.
[How]
- new version of blank_pixel_data for DCN30
- call hubp->set_blank from dcn30_blank_pixel_data
- blank every hubp in the mpcc tree, and odm tree
- on blank enable, wait until the next frame before blanking HUBP
Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
Driver keeps the invalid information cause report the
incorrect monitor which save in remote sink to OS
[How]
When connector type change from MST to non-MST,
stop the topology manager.
Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
When enabling PIP in Heaven, the PIP planes are VSYNC
flip and is also the top-most pipe. In this case GSL
will be disabled because we only check immediate flip
for the top pipe. However, the desktop planes are still
flip immediate so we should at least keep GSL on until
the full update.
[How]
Check each pipe in the tree to see if any planes
are flip immediate. Maintain the GSL lock if yes,
and take it down after when unlocking if any planes
are flipping VSYNC. Keeping GSL on with VSYNC +
flip immediate planes causes corruption.
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
On APU should be always using prefetch mode 0.
Currently, sometimes prefetch mode 1 is being
used causing system to hard hang due to
minTTUVBlank being too low.
[How]
Any ASIC running DCN21 will by default allow
self refresh and mclk switch. This sets both
min and max prefetch mode to 0 by default.
Signed-off-by: Isabel Zhang <isabel.zhang@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why & How]
1. only need to check first ODM pipe.
2. Only need to check eDP which is on.
Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
The MPC memory blocks in DCN3 should be powered down completely when
they are not in use. This will reduce power consumption.
[How]
This commits changes behaviour for dcn3 and does the following:
1. Write to MPC_RMU<X>_LOW_PWR_MODE and MPCC_OGAM_MEM_LOW_PWR_MODE to
automatically shut down memory when not in use
2. mpc3_power_on_shaper_3dlut and mpc3_power_on_ogam_lut are called
to disable force power on when configuration finishes
3. Added a debug option to allow this behaviour to be turned off
Signed-off-by: Jacky Liao <ziyu.liao@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
The C standard does not specify whether an enum is signed or unsigned.
In the function prototype, one of the argument is defined as an enum
but its declaration was unit32_t. Fix this by changing the function
argument to enum in the declaration.
Signed-off-by: Tao.Huang <Tao.Huang@amd.com>
Signed-off-by: Florin Iucha <florin.iucha@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Commit 32927393dc ("sysctl: pass kernel pointers to ->proc_handler")
removed various __user annotations from function signatures as part of
its refactoring.
It also removed the __user annotation for proc_dohung_task_timeout_secs()
at its declaration in sched/sysctl.h, but not at its definition in
kernel/hung_task.c.
Hence, sparse complains:
kernel/hung_task.c:271:5: error: symbol 'proc_dohung_task_timeout_secs' redeclared with different type (incompatible argument 3 (different address spaces))
Adjust the annotation at the definition fitting to that refactoring to make
sparse happy again, which also resolves this warning from sparse:
kernel/hung_task.c:277:52: warning: incorrect type in argument 3 (different address spaces)
kernel/hung_task.c:277:52: expected void *
kernel/hung_task.c:277:52: got void [noderef] __user *buffer
No functional change. No change in object code.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Ignatov <rdna@fb.com>
Link: https://lkml.kernel.org/r/20201028130541.20320-1-lukas.bulwahn@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add a test case to ensure an event is observed by at least one poller
when an epoll timeout is used.
Signed-off-by: Guantao Liu <guantaol@google.com>
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Khazhismel Kumykov <khazhy@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Link: https://lkml.kernel.org/r/20201028180202.952079-2-soheil.kdev@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The purpose of io_remap_pfn_range() is to map IO memory, such as a
memory mapped IO exposed through a PCI BAR. IO devices do not
understand encryption, so this memory must always be decrypted.
Automatically call pgprot_decrypted() as part of the generic
implementation.
This fixes a bug where enabling AMD SME causes subsystems, such as RDMA,
using io_remap_pfn_range() to expose BAR pages to user space to fail.
The CPU will encrypt access to those BAR pages instead of passing
unencrypted IO directly to the device.
Places not mapping IO should use remap_pfn_range().
Fixes: aca20d5462 ("x86/mm: Add support to make use of Secure Memory Encryption")
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: "Dave Young" <dyoung@redhat.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Toshimitsu Kani <toshi.kani@hpe.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/0-v1-025d64bdf6c4+e-amd_sme_fix_jgg@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
For oom_score_adj values in the range [942,999], the current
calculations will print 16 for oom_adj. This patch simply limits the
output so output is inline with docs.
Signed-off-by: Charles Haithcock <chaithco@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Link: https://lkml.kernel.org/r/20201020165130.33927-1-chaithco@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There is a small race window when a delayed work is being canceled and
the work still might be queued from the timer_fn:
CPU0 CPU1
kthread_cancel_delayed_work_sync()
__kthread_cancel_work_sync()
__kthread_cancel_work()
work->canceling++;
kthread_delayed_work_timer_fn()
kthread_insert_work();
BUG: kthread_insert_work() should not get called when work->canceling is
set.
Signed-off-by: Zqiang <qiang.zhang@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201014083030.16895-1-qiang.zhang@windriver.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix the following sparse warning:
mm/truncate.c:531:15: warning: symbol '__invalidate_mapping_pages' was not declared. Should it be static?
Fixes: eb1d7a65f0 ("mm, fadvise: improve the expensive remote LRU cache draining after FADV_DONTNEED")
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lkml.kernel.org/r/20201015054808.2445904-1-yanaijie@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This testcase
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <sys/ptrace.h>
#include <sys/wait.h>
#include <pthread.h>
#include <assert.h>
void *tf(void *arg)
{
return NULL;
}
int main(void)
{
int pid = fork();
if (!pid) {
kill(getpid(), SIGSTOP);
pthread_t th;
pthread_create(&th, NULL, tf, NULL);
return 0;
}
waitpid(pid, NULL, WSTOPPED);
ptrace(PTRACE_SEIZE, pid, 0, PTRACE_O_TRACECLONE);
waitpid(pid, NULL, 0);
ptrace(PTRACE_CONT, pid, 0,0);
waitpid(pid, NULL, 0);
int status;
int thread = waitpid(-1, &status, 0);
assert(thread > 0 && thread != pid);
assert(status == 0x80137f);
return 0;
}
fails and triggers WARN_ON_ONCE(!signr) in do_jobctl_trap().
This is because task_join_group_stop() has 2 problems when current is traced:
1. We can't rely on the "JOBCTL_STOP_PENDING" check, a stopped tracee
can be woken up by debugger and it can clone another thread which
should join the group-stop.
We need to check group_stop_count || SIGNAL_STOP_STOPPED.
2. If SIGNAL_STOP_STOPPED is already set, we should not increment
sig->group_stop_count and add JOBCTL_STOP_CONSUME. The new thread
should stop without another do_notify_parent_cldstop() report.
To clarify, the problem is very old and we should blame
ptrace_init_task(). But now that we have task_join_group_stop() it makes
more sense to fix this helper to avoid the code duplication.
Reported-by: syzbot+3485e3773f7da290eecc@syzkaller.appspotmail.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Christian Brauner <christian@brauner.io>
Cc: "Eric W . Biederman" <ebiederm@xmission.com>
Cc: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201019134237.GA18810@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When flags in queue_pages_pte_range don't have MPOL_MF_MOVE or
MPOL_MF_MOVE_ALL bits, code breaks and passing origin pte - 1 to
pte_unmap_unlock seems like not a good idea.
queue_pages_pte_range can run in MPOL_MF_MOVE_ALL mode which doesn't
migrate misplaced pages but returns with EIO when encountering such a
page. Since commit a7f40cfe3b ("mm: mempolicy: make mbind() return
-EIO when MPOL_MF_STRICT is specified") and early break on the first pte
in the range results in pte_unmap_unlock on an underflow pte. This can
lead to lockups later on when somebody tries to lock the pte resp.
page_table_lock again..
Fixes: a7f40cfe3b ("mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified")
Signed-off-by: Shijie Luo <luoshijie1@huawei.com>
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Feilong Lin <linfeilong@huawei.com>
Cc: Shijie Luo <luoshijie1@huawei.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201019074853.50856-1-luoshijie1@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Now that we have KASAN-KUNIT tests integration, it's easy to see that
some KASAN tests are not adopted to the SW_TAGS mode and are failing.
Adjust the allocation size for kasan_memchr() and kasan_memcmp() by
roung it up to OOB_TAG_OFF so the bad access ends up in a separate
memory granule.
Add a new kmalloc_uaf_16() tests that relies on UAF, and a new
kasan_bitops_tags() test that is tailored to tag-based mode, as it's
hard to adopt the existing kmalloc_oob_16() and kasan_bitops_generic()
(renamed from kasan_bitops()) without losing the precision.
Add new kmalloc_uaf_16() and kasan_bitops_uaf() tests that rely on UAFs,
as it's hard to adopt the existing kmalloc_oob_16() and
kasan_bitops_oob() (rename from kasan_bitops()) without losing the
precision.
Disable kasan_global_oob() and kasan_alloca_oob_left/right() as SW_TAGS
mode doesn't instrument globals nor dynamic allocas.
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: David Gow <davidgow@google.com>
Link: https://lkml.kernel.org/r/76eee17b6531ca8b3ca92b240cb2fd23204aaff7.1603129942.git.andreyknvl@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Richard reported a warning which can be reproduced by running the LTP
madvise6 test (cgroup v1 in the non-hierarchical mode should be used):
WARNING: CPU: 0 PID: 12 at mm/page_counter.c:57 page_counter_uncharge (mm/page_counter.c:57 mm/page_counter.c:50 mm/page_counter.c:156)
Modules linked in:
CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.9.0-rc7-22-default #77
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-48-gd9c812d-rebuilt.opensuse.org 04/01/2014
Workqueue: events drain_local_stock
RIP: 0010:page_counter_uncharge (mm/page_counter.c:57 mm/page_counter.c:50 mm/page_counter.c:156)
Call Trace:
__memcg_kmem_uncharge (mm/memcontrol.c:3022)
drain_obj_stock (./include/linux/rcupdate.h:689 mm/memcontrol.c:3114)
drain_local_stock (mm/memcontrol.c:2255)
process_one_work (./arch/x86/include/asm/jump_label.h:25 ./include/linux/jump_label.h:200 ./include/trace/events/workqueue.h:108 kernel/workqueue.c:2274)
worker_thread (./include/linux/list.h:282 kernel/workqueue.c:2416)
kthread (kernel/kthread.c:292)
ret_from_fork (arch/x86/entry/entry_64.S:300)
The problem occurs because in the non-hierarchical mode non-root page
counters are not linked to root page counters, so the charge is not
propagated to the root memory cgroup.
After the removal of the original memory cgroup and reparenting of the
object cgroup, the root cgroup might be uncharged by draining a objcg
stock, for example. It leads to an eventual underflow of the charge and
triggers a warning.
Fix it by linking all page counters to corresponding root page counters
in the non-hierarchical mode.
Please note, that in the non-hierarchical mode all objcgs are always
reparented to the root memory cgroup, even if the hierarchy has more
than 1 level. This patch doesn't change it.
The patch also doesn't affect how the hierarchical mode is working,
which is the only sane and truly supported mode now.
Thanks to Richard for reporting, debugging and providing an alternative
version of the fix!
Fixes: bf4f059954 ("mm: memcg/slab: obj_cgroup API")
Reported-by: <ltp@lists.linux.it>
Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201026231326.3212225-1-guro@fb.com
Debugged-by: Richard Palethorpe <rpalethorpe@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
memcg_page_state will get the specified number in hierarchical memcg, It
should multiply by HPAGE_PMD_NR rather than an page if the item is
NR_ANON_THPS.
[akpm@linux-foundation.org: fix printk warning]
[akpm@linux-foundation.org: use u64 cast, per Michal]
Fixes: 468c398233 ("mm: memcontrol: switch to native NR_ANON_THPS counter")
Signed-off-by: zhongjiang-ali <zhongjiang-ali@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Link: https://lkml.kernel.org/r/1603722395-72443-1-git-send-email-zhongjiang-ali@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michal Privoznik was using "free page reporting" in QEMU/virtio-balloon
with hugetlbfs and hit the warning below. QEMU with free page hinting
uses fallocate(FALLOC_FL_PUNCH_HOLE) to discard pages that are reported
as free by a VM. The reporting granularity is in pageblock granularity.
So when the guest reports 2M chunks, we fallocate(FALLOC_FL_PUNCH_HOLE)
one huge page in QEMU.
WARNING: CPU: 7 PID: 6636 at mm/page_counter.c:57 page_counter_uncharge+0x4b/0x50
Modules linked in: ...
CPU: 7 PID: 6636 Comm: qemu-system-x86 Not tainted 5.9.0 #137
Hardware name: Gigabyte Technology Co., Ltd. X570 AORUS PRO/X570 AORUS PRO, BIOS F21 07/31/2020
RIP: 0010:page_counter_uncharge+0x4b/0x50
...
Call Trace:
hugetlb_cgroup_uncharge_file_region+0x4b/0x80
region_del+0x1d3/0x300
hugetlb_unreserve_pages+0x39/0xb0
remove_inode_hugepages+0x1a8/0x3d0
hugetlbfs_fallocate+0x3c4/0x5c0
vfs_fallocate+0x146/0x290
__x64_sys_fallocate+0x3e/0x70
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Investigation of the issue uncovered bugs in hugetlb cgroup reservation
accounting. This patch addresses the found issues.
Fixes: 075a61d07a ("hugetlb_cgroup: add accounting for shared mappings")
Reported-by: Michal Privoznik <mprivozn@redhat.com>
Co-developed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Cc: <stable@vger.kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Tejun Heo <tj@kernel.org>
Link: https://lkml.kernel.org/r/20201021204426.36069-1-mike.kravetz@oracle.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
commit 6f42193fd8 ("memremap: don't use a separate devm action for
devmap_managed_enable_get") changed the static key updates such that we
now call devmap_managed_enable_put() without doing the equivalent
devmap_managed_enable_get().
devmap_managed_enable_get() is only called for MEMORY_DEVICE_PRIVATE and
MEMORY_DEVICE_FS_DAX, But memunmap_pages() get called for other pgmap
types too. This results in the below warning when switching between
system-ram and devdax mode for devdax namespace.
jump label: negative count!
WARNING: CPU: 52 PID: 1335 at kernel/jump_label.c:235 static_key_slow_try_dec+0x88/0xa0
Modules linked in:
....
NIP static_key_slow_try_dec+0x88/0xa0
LR static_key_slow_try_dec+0x84/0xa0
Call Trace:
static_key_slow_try_dec+0x84/0xa0
__static_key_slow_dec_cpuslocked+0x34/0xd0
static_key_slow_dec+0x54/0xf0
memunmap_pages+0x36c/0x500
devm_action_release+0x30/0x50
release_nodes+0x2f4/0x3e0
device_release_driver_internal+0x17c/0x280
bus_remove_device+0x124/0x210
device_del+0x1d4/0x530
unregister_dev_dax+0x48/0xe0
devm_action_release+0x30/0x50
release_nodes+0x2f4/0x3e0
device_release_driver_internal+0x17c/0x280
unbind_store+0x130/0x170
drv_attr_store+0x40/0x60
sysfs_kf_write+0x6c/0xb0
kernfs_fop_write+0x118/0x280
vfs_write+0xe8/0x2a0
ksys_write+0x84/0x140
system_call_exception+0x120/0x270
system_call_common+0xf0/0x27c
Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Sachin Sant <sachinp@linux.vnet.ibm.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Link: https://lkml.kernel.org/r/20201023183222.13186-1-rcampbell@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
ARC HSDK platform stopped booting on released v5.10-rc1, getting stuck
in startup of non master SMP cores.
This was bisected to upstream commit 7fef431be9
"(mm/page_alloc: place pages to tail in __free_pages_core())"
That commit itself is harmless, it just exposed a subtle assumption in
our platform code (hence CC'ing linux-mm just as FYI in case some other
arches / platforms trip on it).
The upstream commit is semantically disruptive as it reverses the order
of page allocations (actually it can be good test for hardware
verification to exercise different memory patterns altogether).
For ARC HSDK platform that meant a remapped memory region (pertaining to
unused Closely Coupled Memory) started getting used early for dynamice
allocations, while not effectively remapped on all the cores, triggering
memory error exception on those cores.
The fix is to move the CCM remapping from early platform code to to early core
boot code. And while it is undesirable to riddle common boot code with
platform quirks, there is no other way to do this since the faltering code
involves setting up stack itself so even function calls are not allowed at
that point.
If anyone is interested, all the gory details can be found at Link below.
Link: https://github.com/foss-for-synopsys-dwc-arc-processors/linux/issues/32
Cc: David Hildenbrand <david@redhat.com>
Cc: linux-mm@kvack.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Failure in srpt_refresh_port() for the second port will leave MAD
registered for the first one, however, the srpt_add_one() will be marked
as "failed" and SRPT will leak resources for that registered but not used
and released first port.
Unregister the MAD agent for all ports in case of failure.
Fixes: a42d985bd5 ("ib_srpt: Initial SRP Target merge for v3.3-rc1")
Link: https://lore.kernel.org/r/20201028065051.112430-1-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Camelia Groza says:
====================
dpaa_eth: buffer layout fixes
The patches are related to the software workaround for the A050385 erratum.
The first patch ensures optimal buffer usage for non-erratum scenarios. The
second patch fixes a currently inconsequential discrepancy between the
FMan and Ethernet drivers.
Changes in v3:
- refactor defines for clarity in 1/2
- add more details on the user impact in 1/2
- remove unnecessary inline identifier in 2/2
Changes in v2:
- make the returned value for TX ports explicit in 2/2
- simplify the buf_layout reference in 2/2
====================
Link: https://lore.kernel.org/r/cover.1604339942.git.camelia.groza@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The headroom reserved for received frames needs to be aligned to an
RX specific value. There is currently a discrepancy between the values
used in the Ethernet driver and the values passed to the FMan.
Coincidentally, the resulting aligned values are identical.
Fixes: 3c68b8fffb ("dpaa_eth: FMan erratum A050385 workaround")
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Impose a larger RX private data area only when the A050385 erratum is
present on the hardware. A smaller buffer size is sufficient in all
other scenarios. This enables a wider range of linear Jumbo frame
sizes in non-erratum scenarios, instead of turning to multi
buffer Scatter/Gather frames. The maximum linear frame size is
increased by 128 bytes for non-erratum arm64 platforms.
Cleanup the hardware annotations header defines in the process.
Fixes: 3c68b8fffb ("dpaa_eth: FMan erratum A050385 workaround")
Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Multiple CPUs may be mapped to the same hctx, allowing mulitple
submission contexts to attempt commit_rqs(). We need to verify we're
not writing the same doorbell value multiple times since that's a spec
violation.
Revert commit 54b2fcee1d.
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1878596
Reported-by: "B.L. Jones" <brandon.gustav@googlemail.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
