==================================================================
BUG: KCSAN: data-race in handle_mm_fault / watchdog

read to 0xffff888076b8e110 of 8 bytes by task 1061 on cpu 0:
 check_hung_uninterruptible_tasks kernel/hung_task.c:197 [inline]
 watchdog+0x2c3/0x7c0 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 0xffff888076b8e110 of 8 bytes by task 31319 on cpu 1:
 handle_mm_fault+0x4a/0x530 mm/memory.c:3987
 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline]
 __do_page_fault+0x3fb/0x9e0 arch/x86/mm/fault.c:1506
 do_page_fault+0x54/0x233 arch/x86/mm/fault.c:1530
 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1202

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 31319 Comm: syz-executor.3 Not tainted 5.4.0-rc3+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 31319 Comm: syz-executor.3 Not tainted 5.4.0-rc3+ #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+0xf5/0x159 lib/dump_stack.c:113
 panic+0x210/0x640 kernel/panic.c:221
 kcsan_report.cold+0xc/0x10 kernel/kcsan/report.c:302
 __kcsan_setup_watchpoint+0x32e/0x4a0 kernel/kcsan/core.c:411
 __tsan_write8 kernel/kcsan/kcsan.c:36 [inline]
 __tsan_write8+0x32/0x40 kernel/kcsan/kcsan.c:36
 handle_mm_fault+0x4a/0x530 mm/memory.c:3987
 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline]
 __do_page_fault+0x3fb/0x9e0 arch/x86/mm/fault.c:1506
 do_page_fault+0x54/0x233 arch/x86/mm/fault.c:1530
 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1202
RIP: 0033:0x40ef30
Code: 31 c6 44 8d 4f 04 41 89 f8 8d 1c f6 89 d8 c1 e8 04 31 c3 69 c3 2d eb d4 27 89 c3 c1 eb 0f 31 c3 89 f8 89 c6 81 e6 ff 1f 00 00 <8b> 14 b5 00 00 73 00 41 39 d0 74 23 85 d2 74 58 83 c0 01 41 39 c1
RSP: 002b:00007ffce57e87f0 EFLAGS: 00010206
RAX: 00000000de7412d7 RBX: 000000004d50e01e RCX: 0000001b32420000
RDX: 0000001b3142002c RSI: 00000000000012d7 RDI: ffffffffde7412d7
RBP: 0000000000000003 R08: 00000000de7412d7 R09: 00000000de7412db
R10: 00007ffce57e8990 R11: 0000000000000246 R12: 000000000075bfa8
R13: 0000000080000000 R14: 00007f9ef9612008 R15: 0000000000000003
Kernel Offset: disabled
Rebooting in 86400 seconds..