general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 22545 Comm: syz-executor.4 Not tainted 6.3.0-rc3-syzkaller-00026-gfff5a5e7f528 #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:182 [inline]
RIP: 0010:io_poll_remove_entries.part.0+0x376/0x810 io_uring/poll.c:220
Code: ea 03 80 3c 02 00 0f 85 89 03 00 00 48 8b 5b 40 e8 8f df 78 fd 4c 8d 73 08 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 33 03 00 00 48 8b 6b 08 48 85 ed 0f 84 29 01 00
RSP: 0018:ffffc900047d7948 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000c626000
RDX: 0000000000000001 RSI: ffffffff840a0571 RDI: ffff888020942240
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000006
R10: 0000000000000001 R11: 0000000000094001 R12: ffff88801ccb5044
R13: 0000000000000000 R14: 0000000000000008 R15: ffff888020942208
FS:  00007fac09e8a700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000778d9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 io_poll_remove_entries io_uring/poll.c:198 [inline]
 __io_arm_poll_handler+0x7ec/0xe00 io_uring/poll.c:603
 io_arm_poll_handler+0x4f2/0xc60 io_uring/poll.c:734
 io_queue_async+0xc1/0x5b0 io_uring/io_uring.c:2057
 io_queue_sqe io_uring/io_uring.c:2088 [inline]
 io_req_task_submit+0x256/0x290 io_uring/io_uring.c:1425
 handle_tw_list io_uring/io_uring.c:1184 [inline]
 tctx_task_work+0x2d7/0xa00 io_uring/io_uring.c:1246
 task_work_run+0x16f/0x270 kernel/task_work.c:179
 get_signal+0x1c7/0x25b0 kernel/signal.c:2635
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296
 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fac0908c0f9
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:00007fac09e8a168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000800 RBX: 00007fac091ac050 RCX: 00007fac0908c0f9
RDX: 0000000000000000 RSI: 000000000000561c RDI: 0000000000000006
RBP: 00007fac090e7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fac092cfb1f R14: 00007fac09e8a300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:io_poll_remove_entry io_uring/poll.c:182 [inline]
RIP: 0010:io_poll_remove_entries.part.0+0x376/0x810 io_uring/poll.c:220
Code: ea 03 80 3c 02 00 0f 85 89 03 00 00 48 8b 5b 40 e8 8f df 78 fd 4c 8d 73 08 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 33 03 00 00 48 8b 6b 08 48 85 ed 0f 84 29 01 00
RSP: 0018:ffffc900047d7948 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000c626000
RDX: 0000000000000001 RSI: ffffffff840a0571 RDI: ffff888020942240
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000006
R10: 0000000000000001 R11: 0000000000094001 R12: ffff88801ccb5044
R13: 0000000000000000 R14: 0000000000000008 R15: ffff888020942208
FS:  00007fac09e8a700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000021000000 CR3: 00000000778d9000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	03 80 3c 02 00 0f    	add    0xf00023c(%rax),%eax
   6:	85 89 03 00 00 48    	test   %ecx,0x48000003(%rcx)
   c:	8b 5b 40             	mov    0x40(%rbx),%ebx
   f:	e8 8f df 78 fd       	callq  0xfd78dfa3
  14:	4c 8d 73 08          	lea    0x8(%rbx),%r14
  18:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1f:	fc ff df
  22:	4c 89 f2             	mov    %r14,%rdx
  25:	48 c1 ea 03          	shr    $0x3,%rdx
* 29:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2d:	0f 85 33 03 00 00    	jne    0x366
  33:	48 8b 6b 08          	mov    0x8(%rbx),%rbp
  37:	48 85 ed             	test   %rbp,%rbp
  3a:	0f                   	.byte 0xf
  3b:	84 29                	test   %ch,(%rcx)
  3d:	01 00                	add    %eax,(%rax)