==================================================================
BUG: KCSAN: data-race in poll_schedule_timeout.constprop.0 / watchdog
read to 0xffff88812b740050 of 8 bytes by task 1048 on cpu 1:
check_hung_uninterruptible_tasks kernel/hung_task.c:197 [inline]
watchdog+0x2b1/0x960 kernel/hung_task.c:289
kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
write to 0xffff88812b740050 of 8 bytes by task 1 on cpu 0:
poll_schedule_timeout.constprop.0+0x8f/0xc0 fs/select.c:244
do_select+0xd7f/0x1020 fs/select.c:603
core_sys_select+0x312/0x650 fs/select.c:677
kern_select+0x106/0x170 fs/select.c:718
__do_sys_select fs/select.c:725 [inline]
__se_sys_select fs/select.c:722 [inline]
__x64_sys_select+0x70/0x90 fs/select.c:722
do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 1 Comm: init Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 1 Comm: init Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x11d/0x181 lib/dump_stack.c:118
panic+0x210/0x640 kernel/panic.c:221
kcsan_report.cold+0xc/0xd kernel/kcsan/report.c:313
kcsan_setup_watchpoint+0x3fe/0x460 kernel/kcsan/core.c:416
check_access kernel/kcsan/core.c:459 [inline]
__tsan_unaligned_write8+0xc7/0x110 kernel/kcsan/core.c:589
poll_schedule_timeout.constprop.0+0x8f/0xc0 fs/select.c:244
do_select+0xd7f/0x1020 fs/select.c:603
core_sys_select+0x312/0x650 fs/select.c:677
kern_select+0x106/0x170 fs/select.c:718
__do_sys_select fs/select.c:725 [inline]
__se_sys_select fs/select.c:722 [inline]
__x64_sys_select+0x70/0x90 fs/select.c:722
do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fa97dde2dd3
Code: 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 90 90 90 83 3d 25 48 2b 00 00 75 13 49 89 ca b8 17 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 ab 2f 01 00 48 89 04 24
RSP: 002b:00007ffdadd5a9c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000017
RAX: ffffffffffffffda RBX: 00007ffdadd5ab70 RCX: 00007fa97dde2dd3
RDX: 0000000000000000 RSI: 00007ffdadd5ad20 RDI: 000000000000000b
RBP: 00007ffdadd5ad20 R08: 00007ffdadd5ada0 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00007ffdadd5b100 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..