general protection fault, probably for non-canonical address 0xdffffc00000000b2: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000590-0x0000000000000597]
CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 5.14.0-rc5-next-20210812-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:latency_exceeded block/blk-wbt.c:237 [inline]
RIP: 0010:wb_timer_fn+0x149/0x1740 block/blk-wbt.c:360
Code: 03 80 3c 02 00 0f 85 68 13 00 00 48 8b 9b c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 90 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 13 00 00 48 8b 9b 90 05 00 00 48 b8 00 00 00
RSP: 0018:ffffc90000d27bc0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 00000000000000b2 RSI: ffffffff83d2005d RDI: 0000000000000590
RBP: ffff88801acd9800 R08: 0000000000000003 R09: ffff88801acd9983
R10: ffffffff83d20052 R11: 0000000000000000 R12: 0000000000000003
R13: 0000000000000000 R14: ffff88801af0fb80 R15: ffff88801acd98d0
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020263030 CR3: 000000003d853000 CR4: 00000000001506f0
Call Trace:
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
 expire_timers kernel/time/timer.c:1466 [inline]
 __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734
 __run_timers kernel/time/timer.c:1715 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 run_ksoftirqd kernel/softirq.c:920 [inline]
 run_ksoftirqd+0x2d/0x60 kernel/softirq.c:912
 smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace 18179df82e06f8d4 ]---
RIP: 0010:latency_exceeded block/blk-wbt.c:237 [inline]
RIP: 0010:wb_timer_fn+0x149/0x1740 block/blk-wbt.c:360
Code: 03 80 3c 02 00 0f 85 68 13 00 00 48 8b 9b c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 90 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 13 00 00 48 8b 9b 90 05 00 00 48 b8 00 00 00
RSP: 0018:ffffc90000d27bc0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 00000000000000b2 RSI: ffffffff83d2005d RDI: 0000000000000590
RBP: ffff88801acd9800 R08: 0000000000000003 R09: ffff88801acd9983
R10: ffffffff83d20052 R11: 0000000000000000 R12: 0000000000000003
R13: 0000000000000000 R14: ffff88801af0fb80 R15: ffff88801acd98d0
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020263030 CR3: 000000003d853000 CR4: 00000000001506f0