general protection fault, probably for non-canonical address 0xdffffc00000000aa: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000550-0x0000000000000557]
CPU: 0 PID: 9925 Comm: syz-executor.1 Not tainted 5.14.0-rc5-next-20210811-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: 0018:ffffc90000007cd8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 00000000000000aa RSI: ffffffff83d184fd RDI: 0000000000000550
RBP: ffff88801abbb000 R08: 0000000000000003 R09: ffff88801abbb183
R10: ffffffff83d184f2 R11: 0000000000000000 R12: 0000000000000003
R13: 0000000000000000 R14: ffff888146002700 R15: ffff88801abbb0d0
FS:  00007f0a055c6700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002022c030 CR3: 00000000772f6000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 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+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:191
Code: 74 24 10 e8 da 72 29 f8 48 89 ef e8 82 e8 29 f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> e3 c6 1d f8 65 8b 05 ec 4a d0 76 85 c0 74 0a 5b 5d c3 e8 10 2b
RSP: 0018:ffffc900063a7740 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000200 RCX: 1ffffffff1adbf7d
RDX: 0000000000000000 RSI: ffffffff817bd041 RDI: 0000000000000001
RBP: ffff88801a275bc0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff817bd028 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000010 R14: 0000000000000001 R15: 0000000000000246
 spin_unlock_irqrestore include/linux/spinlock.h:414 [inline]
 __wake_up_common_lock+0xde/0x130 kernel/sched/wait.c:140
 __unix_dgram_recvmsg+0x2cd/0xb80 net/unix/af_unix.c:2257
 unix_dgram_recvmsg+0xca/0xf0 net/unix/af_unix.c:2326
 sock_recvmsg_nosec net/socket.c:944 [inline]
 ____sys_recvmsg+0x527/0x600 net/socket.c:2620
 ___sys_recvmsg+0x127/0x200 net/socket.c:2664
 do_recvmmsg+0x24d/0x6d0 net/socket.c:2758
 __sys_recvmmsg net/socket.c:2837 [inline]
 __do_sys_recvmmsg net/socket.c:2860 [inline]
 __se_sys_recvmmsg net/socket.c:2853 [inline]
 __x64_sys_recvmmsg+0x20b/0x260 net/socket.c:2853
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0a055c6188 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffc4008166f R14: 00007f0a055c6300 R15: 0000000000022000
Modules linked in:
---[ end trace e2755849320b57ff ]---
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: 0018:ffffc90000007cd8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100
RDX: 00000000000000aa RSI: ffffffff83d184fd RDI: 0000000000000550
RBP: ffff88801abbb000 R08: 0000000000000003 R09: ffff88801abbb183
R10: ffffffff83d184f2 R11: 0000000000000000 R12: 0000000000000003
R13: 0000000000000000 R14: ffff888146002700 R15: ffff88801abbb0d0
FS:  00007f0a055c6700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002022c030 CR3: 00000000772f6000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400