general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
CPU: 0 PID: 18038 Comm: syz-executor.2 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:sock_from_file+0x20/0x90 net/socket.c:505
Code: f5 ff ff ff c3 0f 1f 44 00 00 41 54 53 48 89 fb e8 25 1d 63 fa 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 4f 45 31 e4 48 81 7b 28 00 32 8a 8a 74 0c e8 f8 1c
RSP: 0018:ffffc900023e79f0 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000dd43000
RDX: 0000000000000005 RSI: ffffffff871302eb RDI: 0000000000000028
RBP: ffff88807faeb500 R08: ffffffff899ac000 R09: ffffffff81e32368
R10: 0000000000000027 R11: 000000000000001b R12: 0000000000000001
R13: 1ffff1100ff5d6a9 R14: 0000000000000003 R15: ffff88807faeb500
FS:  00007fe2a70d3700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000085c07000 CR4: 0000000000350ef0
Call Trace:
 io_recv+0xc1/0x840 fs/io_uring.c:4965
 io_issue_sqe+0xf66/0x6ba0 fs/io_uring.c:6587
 __io_queue_sqe+0x90/0xb50 fs/io_uring.c:6864
 io_req_task_submit+0xbf/0x1b0 fs/io_uring.c:2218
 tctx_task_work+0x166/0x610 fs/io_uring.c:2143
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 tracehook_notify_signal include/linux/tracehook.h:212 [inline]
 handle_signal_work kernel/entry/common.c:146 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0x256/0x290 kernel/entry/common.c:209
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
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:00007fe2a70d3188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000200 RBX: 000000000056bf80 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 00000000000045f5 RDI: 0000000000000004
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007fffbb9a1f3f R14: 00007fe2a70d3300 R15: 0000000000022000
Modules linked in:
---[ end trace 6028d736da815d50 ]---
RIP: 0010:sock_from_file+0x20/0x90 net/socket.c:505
Code: f5 ff ff ff c3 0f 1f 44 00 00 41 54 53 48 89 fb e8 25 1d 63 fa 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 4f 45 31 e4 48 81 7b 28 00 32 8a 8a 74 0c e8 f8 1c
RSP: 0018:ffffc900023e79f0 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000dd43000
RDX: 0000000000000005 RSI: ffffffff871302eb RDI: 0000000000000028
RBP: ffff88807faeb500 R08: ffffffff899ac000 R09: ffffffff81e32368
R10: 0000000000000027 R11: 000000000000001b R12: 0000000000000001
R13: 1ffff1100ff5d6a9 R14: 0000000000000003 R15: ffff88807faeb500
FS:  00007fe2a70d3700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3eff9f8008 CR3: 0000000085c07000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	ff c3                	inc    %ebx
   2:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   7:	41 54                	push   %r12
   9:	53                   	push   %rbx
   a:	48 89 fb             	mov    %rdi,%rbx
   d:	e8 25 1d 63 fa       	callq  0xfa631d37
  12:	48 8d 7b 28          	lea    0x28(%rbx),%rdi
  16:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1d:	fc ff df
  20:	48 89 fa             	mov    %rdi,%rdx
  23:	48 c1 ea 03          	shr    $0x3,%rdx
* 27:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2b:	75 4f                	jne    0x7c
  2d:	45 31 e4             	xor    %r12d,%r12d
  30:	48 81 7b 28 00 32 8a 	cmpq   $0xffffffff8a8a3200,0x28(%rbx)
  37:	8a
  38:	74 0c                	je     0x46
  3a:	e8                   	.byte 0xe8
  3b:	f8                   	clc
  3c:	1c                   	.byte 0x1c