general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 28595 Comm: syz-executor.3 Not tainted 6.1.21-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:io_poll_remove_entry io_uring/poll.c:180 [inline]
RIP: 0010:io_poll_remove_entries+0x39a/0x5f0 io_uring/poll.c:218
Code: c4 40 4c 89 e0 48 c1 e8 03 4d 89 fd 42 80 3c 38 00 74 08 4c 89 e7 e8 25 27 b2 fd 49 8b 1c 24 4c 8d 7b 08 4d 89 fe 49 c1 ee 03 <43> 80 3c 2e 00 74 08 4c 89 ff e8 07 27 b2 fd 49 8b 2f 48 85 ed 0f
RSP: 0018:ffffc90014397650 EFLAGS: 00010202
RAX: 1ffff1100f96ac18 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000b679000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000001000000 R08: ffffffff842d7fa5 R09: fffffbfff204de31
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807cb560c0
R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000008
FS:  00007f7ee51ac700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30d25000 CR3: 000000007a0d7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __io_arm_poll_handler+0x5df/0x920 io_uring/poll.c:619
 io_arm_poll_handler+0x707/0xc30 io_uring/poll.c:750
 io_queue_async+0xa6/0x640 io_uring/io_uring.c:1877
 handle_tw_list+0x2aa/0x480 io_uring/io_uring.c:1035
 tctx_task_work+0x172/0x660 io_uring/io_uring.c:1093
 task_work_run+0x246/0x300 kernel/task_work.c:179
 get_signal+0x15fc/0x17d0 kernel/signal.c:2635
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:296
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7ee448c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7ee51ac168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000800 RBX: 00007f7ee45ac050 RCX: 00007f7ee448c0f9
RDX: 0000000000000000 RSI: 000000000000561c RDI: 0000000000000006
RBP: 00007f7ee44e7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff4822b9af R14: 00007f7ee51ac300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:io_poll_remove_entry io_uring/poll.c:180 [inline]
RIP: 0010:io_poll_remove_entries+0x39a/0x5f0 io_uring/poll.c:218
Code: c4 40 4c 89 e0 48 c1 e8 03 4d 89 fd 42 80 3c 38 00 74 08 4c 89 e7 e8 25 27 b2 fd 49 8b 1c 24 4c 8d 7b 08 4d 89 fe 49 c1 ee 03 <43> 80 3c 2e 00 74 08 4c 89 ff e8 07 27 b2 fd 49 8b 2f 48 85 ed 0f
RSP: 0018:ffffc90014397650 EFLAGS: 00010202
RAX: 1ffff1100f96ac18 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000b679000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000001000000 R08: ffffffff842d7fa5 R09: fffffbfff204de31
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807cb560c0
R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000008
FS:  00007f7ee51ac700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdc3dda8000 CR3: 000000007a0d7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	40                   	rex
   1:	4c 89 e0             	mov    %r12,%rax
   4:	48 c1 e8 03          	shr    $0x3,%rax
   8:	4d 89 fd             	mov    %r15,%r13
   b:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
  10:	74 08                	je     0x1a
  12:	4c 89 e7             	mov    %r12,%rdi
  15:	e8 25 27 b2 fd       	callq  0xfdb2273f
  1a:	49 8b 1c 24          	mov    (%r12),%rbx
  1e:	4c 8d 7b 08          	lea    0x8(%rbx),%r15
  22:	4d 89 fe             	mov    %r15,%r14
  25:	49 c1 ee 03          	shr    $0x3,%r14
* 29:	43 80 3c 2e 00       	cmpb   $0x0,(%r14,%r13,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	4c 89 ff             	mov    %r15,%rdi
  33:	e8 07 27 b2 fd       	callq  0xfdb2273f
  38:	49 8b 2f             	mov    (%r15),%rbp
  3b:	48 85 ed             	test   %rbp,%rbp
  3e:	0f                   	.byte 0xf