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Date: Sat, 19 Dec 2020 23:35:09 +0800
From: kernel test robot <oliver.sang@...el.com>
To: John Stultz <john.stultz@...aro.org>
Cc: 0day robot <lkp@...el.com>, Sumit Semwal <sumit.semwal@...aro.org>,
Liam Mark <lmark@...eaurora.org>,
Chris Goldsworthy <cgoldswo@...eaurora.org>,
Laura Abbott <labbott@...nel.org>,
Brian Starkey <Brian.Starkey@....com>,
Hridya Valsaraju <hridya@...gle.com>,
Suren Baghdasaryan <surenb@...gle.com>,
Sandeep Patil <sspatil@...gle.com>,
Daniel Mentz <danielmentz@...gle.com>,
Ørjan Eide <orjan.eide@....com>,
Robin Murphy <robin.murphy@....com>,
Ezequiel Garcia <ezequiel@...labora.com>,
Simon Ser <contact@...rsion.fr>,
James Jones <jajones@...dia.com>,
LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
John Stultz <john.stultz@...aro.org>,
linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: [dma] adc430f226: WARNING:at_kernel/sched/core.c:#__might_sleep
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: adc430f226136c02a382fe6dff29a6382059ce0c ("dma-buf: system_heap: Add deferred freeing to the system heap")
url: https://github.com/0day-ci/linux/commits/John-Stultz/dma-buf-heaps-Add-deferred-free-helper-library-code/20201218-071112
in testcase: locktorture
version:
with following parameters:
runtime: 300s
test: cpuhotplug
test-description: This torture test consists of creating a number of kernel threads which acquire the lock and hold it for specific amount of time, thus simulating different critical region behaviors.
test-url: https://www.kernel.org/doc/Documentation/locking/locktorture.txt
on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-------------------------------------------------------+------------+------------+
| | 51e229fb2d | adc430f226 |
+-------------------------------------------------------+------------+------------+
| boot_successes | 19 | 0 |
| boot_failures | 9 | 4 |
| invoked_oom-killer:gfp_mask=0x | 1 | |
| Mem-Info | 1 | |
| EIP:__put_user_nocheck_4 | 1 | |
| kernel_BUG_at_kernel/sched/core.c | 8 | 4 |
| invalid_opcode:#[##] | 8 | 4 |
| EIP:sched_cpu_dying | 8 | 4 |
| Kernel_panic-not_syncing:Fatal_exception | 8 | 4 |
| WARNING:possible_circular_locking_dependency_detected | 8 | 4 |
| WARNING:at_kernel/sched/core.c:#__might_sleep | 0 | 4 |
| EIP:__might_sleep | 0 | 4 |
+-------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>
[ 107.814818] WARNING: CPU: 0 PID: 130 at kernel/sched/core.c:7858 __might_sleep+0x6c/0x80
[ 107.816258] mtdoops: mtd device (mtddev=name/number) must be supplied
[ 107.818504] Modules linked in:
[ 107.818520] CPU: 0 PID: 130 Comm: dmabuf-deferred Not tainted 5.10.0-next-20201217-00003-gadc430f22613 #1
[ 107.818536] EIP: __might_sleep+0x6c/0x80
[ 107.821708] L440GX flash mapping: failed to find PIIX4 ISA bridge, cannot continue
[ 107.823070] Code: 32 db 01 8b 73 0c 8b 83 e0 17 00 00 89 44 24 0c 8b 9b e0 17 00 00 89 5c 24 08 89 74 24 04 c7 04 24 38 92 cb da e8 c9 a5 b5 00 <0f> 0b 8b 4d ec 8b 55 f0 8b 45 f4 eb b0 8d b4 26 00 00 00 00 55 89
[ 107.827562] SBC-GXx flash: IO:0x258-0x259 MEM:0xdc000-0xdffff
[ 107.828850] EAX: 00000069 EBX: d96a0ed1 ECX: 00000000 EDX: 00000000
[ 107.836825] scx200_docflash: NatSemi SCx200 DOCCS Flash Driver
[ 107.839849] ESI: 00000001 EDI: c11e4200 EBP: c11b3eec ESP: c11b3ec8
[ 107.839857] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010296
[ 107.839867] CR0: 80050033 CR2: 00000000 CR3: 1b540000 CR4: 00040690
[ 107.839889] Call Trace:
[ 107.842656] slram: not enough parameters.
[ 107.844946] ? prepare_to_wait_event+0x51/0x140
[ 107.855521] mtd mtd0: GPIO lookup for consumer wp
[ 107.855658] ? prepare_to_wait_event+0x51/0x140
[ 107.856828] mtd mtd0: using lookup tables for GPIO lookup
[ 107.856842] mtd mtd0: No GPIO consumer wp found
[ 107.858676] __mutex_lock+0x21/0x820
[ 107.858693] ? lockdep_hardirqs_on_prepare+0xda/0x180
[ 107.858706] ? _raw_spin_unlock_irqrestore+0x35/0x40
[ 107.874413] ? prepare_to_wait_event+0x7d/0x140
[ 107.876397] ? trace_hardirqs_on+0x22/0xe0
[ 107.878110] ? prepare_to_wait_event+0x7d/0x140
[ 107.880095] mutex_lock_nested+0x20/0x40
[ 107.881791] ? deferred_free_thread+0x75/0xc0
[ 107.883801] deferred_free_thread+0x75/0xc0
[ 107.885686] ? do_wait_intr_irq+0xa0/0xa0
[ 107.887498] kthread+0x107/0x120
[ 107.889019] ? freelist_shrink_count+0x40/0x40
[ 107.890980] ? kthread_create_worker_on_cpu+0x20/0x20
[ 107.893128] ret_from_fork+0x19/0x24
[ 107.894780] irq event stamp: 339
[ 107.896256] hardirqs last enabled at (349): [<d96bfb75>] console_unlock+0x3f5/0x5a0
[ 107.899642] hardirqs last disabled at (358): [<d96bfb66>] console_unlock+0x3e6/0x5a0
[ 107.903036] softirqs last enabled at (336): [<da2d79d5>] __do_softirq+0x295/0x435
[ 107.906066] softirqs last disabled at (331): [<d96232bd>] do_softirq_own_stack+0x1d/0x40
[ 107.908613] random: get_random_bytes called from init_oops_id+0x37/0x40 with crng_init=0
[ 107.908624] ---[ end trace 4d9142d8a53ac308 ]---
To reproduce:
# build kernel
cd linux
cp config-5.10.0-next-20201217-00003-gadc430f22613 .config
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 INSTALL_MOD_PATH=<mod-install-dir> modules_install
cd <mod-install-dir>
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
Thanks,
Oliver Sang
View attachment "config-5.10.0-next-20201217-00003-gadc430f22613" of type "text/plain" (155566 bytes)
View attachment "job-script" of type "text/plain" (4662 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (20348 bytes)
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