BUG: unable to handle page fault for address: fffffc0000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 546 Comm: io_uring-sq Not tainted 5.4.242-syzkaller-00082-g487daef44f9f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:91 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:108 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:181 [inline]
RIP: 0010:check_memory_region+0x6b/0x280 mm/kasan/generic.c:191
Code: 03 49 bb 01 00 00 00 00 fc ff df 4f 8d 34 1a 4c 89 f5 4c 29 cd 48 83 fd 10 7f 26 48 85 ed 0f 84 3a 01 00 00 49 f7 d2 49 01 da <41> 80 39 00 0f 85 c4 01 00 00 49 ff c1 49 ff c2 75 ee e9 1d 01 00
RSP: 0018:ffff8881eae57a18 EFLAGS: 00010006
RAX: 0000000000000001 RBX: 1fffffffffffffff RCX: ffffffff844fd13c
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffffffffffff
RBP: e000000000000002 R08: dffffc0000000000 R09: fffffc0000000000
R10: 1fffffffffffffff R11: dffffc0000000001 R12: ffff8881eae57a80
R13: ffffffffffffffff R14: dffffc0000000001 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffc0000000000 CR3: 00000001eb851000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 atomic_try_cmpxchg include/asm-generic/atomic-instrumented.h:693 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:78 [inline]
 do_raw_spin_lock_flags include/linux/spinlock.h:193 [inline]
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irqsave+0xec/0x210 kernel/locking/spinlock.c:159
 eventfd_signal+0x48/0x130 fs/eventfd.c:76
 io_submit_sqes fs/io_uring.c:2785 [inline]
 io_sq_thread+0xe17/0x1c30 fs/io_uring.c:2911
 kthread+0x2da/0x360 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354
Modules linked in:
CR2: fffffc0000000000
---[ end trace 795db178da41a15c ]---
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:91 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:108 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:181 [inline]
RIP: 0010:check_memory_region+0x6b/0x280 mm/kasan/generic.c:191
Code: 03 49 bb 01 00 00 00 00 fc ff df 4f 8d 34 1a 4c 89 f5 4c 29 cd 48 83 fd 10 7f 26 48 85 ed 0f 84 3a 01 00 00 49 f7 d2 49 01 da <41> 80 39 00 0f 85 c4 01 00 00 49 ff c1 49 ff c2 75 ee e9 1d 01 00
RSP: 0018:ffff8881eae57a18 EFLAGS: 00010006
RAX: 0000000000000001 RBX: 1fffffffffffffff RCX: ffffffff844fd13c
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffffffffffff
RBP: e000000000000002 R08: dffffc0000000000 R09: fffffc0000000000
R10: 1fffffffffffffff R11: dffffc0000000001 R12: ffff8881eae57a80
R13: ffffffffffffffff R14: dffffc0000000001 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffc0000000000 CR3: 00000001eb851000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	49 bb 01 00 00 00 00 	movabs $0xdffffc0000000001,%r11
   7:	fc ff df
   a:	4f 8d 34 1a          	lea    (%r10,%r11,1),%r14
   e:	4c 89 f5             	mov    %r14,%rbp
  11:	4c 29 cd             	sub    %r9,%rbp
  14:	48 83 fd 10          	cmp    $0x10,%rbp
  18:	7f 26                	jg     0x40
  1a:	48 85 ed             	test   %rbp,%rbp
  1d:	0f 84 3a 01 00 00    	je     0x15d
  23:	49 f7 d2             	not    %r10
  26:	49 01 da             	add    %rbx,%r10
* 29:	41 80 39 00          	cmpb   $0x0,(%r9) <-- trapping instruction
  2d:	0f 85 c4 01 00 00    	jne    0x1f7
  33:	49 ff c1             	inc    %r9
  36:	49 ff c2             	inc    %r10
  39:	75 ee                	jne    0x29
  3b:	e9                   	.byte 0xe9
  3c:	1d                   	.byte 0x1d
  3d:	01 00                	add    %eax,(%rax)