general protection fault, probably for non-canonical address 0xdffffc00000000aa: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000550-0x0000000000000557]
CPU: 1 PID: 15457 Comm: syz-executor.5 Not tainted 5.14.0-rc5-next-20210810-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 50 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 13 00 00 48 8b 9b 50 05 00 00 48 b8 00 00 00
RSP: 0000:ffffc90008097c20 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 00000000000000aa RSI: ffffffff83d107dd RDI: 0000000000000550
RBP: ffff88801a9fe800 R08: 0000000000000003 R09: ffff88801a9fe983
R10: ffffffff83d107d2 R11: 0000000000000000 R12: 0000000000000003
R13: 0000000000000000 R14: ffff8881465f5680 R15: ffff88801a9fe8d0
FS:  0000000002bed400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30626000 CR3: 0000000070f3f000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x45/0xc0 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0033:0x414681
Code: 49 89 0e 49 89 7e 08 49 8b 50 f8 48 89 ee 4c 89 e3 4c 89 c0 0f 1f 44 00 00 49 89 dd 48 39 cf 72 2f 48 83 e8 08 48 39 d1 73 14 <0f> 1f 80 00 00 00 00 48 8b 50 f8 48 83 e8 08 48 39 ca 77 f3 48 39
RSP: 002b:00007ffcc7ef8c60 EFLAGS: 00000283
RAX: 00007f637dcbc120 RBX: 00007f637dcbb970 RCX: ffffffff83efffac
RDX: ffffffff83efffcc RSI: 00007f637dcbb978 RDI: ffffffff83efffcc
RBP: 00007f637dcbb5c0 R08: 00007f637dcbcc18 R09: 0000001b306239d4
R10: 0000000000000fb6 R11: 00000000e3a88fba R12: 00007f637dcbb5b8
R13: 00007f637dcbb970 R14: 00007f637dcbb5b0 R15: 0000000000000016
Modules linked in:
---[ end trace ff90b64ca60ff556 ]---
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 50 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 13 00 00 48 8b 9b 50 05 00 00 48 b8 00 00 00
RSP: 0000:ffffc90008097c20 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 00000000000000aa RSI: ffffffff83d107dd RDI: 0000000000000550
RBP: ffff88801a9fe800 R08: 0000000000000003 R09: ffff88801a9fe983
R10: ffffffff83d107d2 R11: 0000000000000000 R12: 0000000000000003
R13: 0000000000000000 R14: ffff8881465f5680 R15: ffff88801a9fe8d0
FS:  0000000002bed400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30626000 CR3: 0000000070f3f000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400