general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]
CPU: 0 PID: 8372 Comm: syz-executor295 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:file_inode include/linux/fs.h:1344 [inline]
RIP: 0010:__io_file_supports_nowait+0x28/0x3e0 fs/io_uring.c:2785
Code: 00 90 55 41 57 41 56 41 54 53 41 89 f6 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 73 02 92 ff 49 8d 5f 20 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 29 55 db ff 48 8b 2b 48 89 e8 48
RSP: 0018:ffffc9000a127430 EFLAGS: 00010202
RAX: 0000000000000004 RBX: 0000000000000020 RCX: ffff8880315b54c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000a127c70 R08: ffffffff81ee1b1b R09: fffff52001424f79
R10: fffff52001424f79 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff92001424f7a R14: 0000000000000000 R15: 0000000000000000
FS: 000000000214f300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000084 CR3: 0000000037b7b000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
io_file_supports_nowait fs/io_uring.c:2823 [inline]
io_read fs/io_uring.c:3440 [inline]
io_issue_sqe+0xed3/0x9280 fs/io_uring.c:6558
__io_queue_sqe+0xe3/0x1000 fs/io_uring.c:6864
tctx_task_work+0x2ad/0x560 fs/io_uring.c:2143
task_work_run+0x146/0x1c0 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+0x180/0x220 kernel/entry/common.c:209
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:302
do_syscall_64+0x4c/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x43f029
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff43096f28 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000200 RBX: 0000000000000003 RCX: 000000000043f029
RDX: 0000000000000000 RSI: 00000000000045f5 RDI: 0000000000000003
RBP: 0000000000403010 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004030a0
R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488
Modules linked in:
---[ end trace ab6ebfa74a5558de ]---
RIP: 0010:file_inode include/linux/fs.h:1344 [inline]
RIP: 0010:__io_file_supports_nowait+0x28/0x3e0 fs/io_uring.c:2785
Code: 00 90 55 41 57 41 56 41 54 53 41 89 f6 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 73 02 92 ff 49 8d 5f 20 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 29 55 db ff 48 8b 2b 48 89 e8 48
RSP: 0018:ffffc9000a127430 EFLAGS: 00010202
RAX: 0000000000000004 RBX: 0000000000000020 RCX: ffff8880315b54c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000a127c70 R08: ffffffff81ee1b1b R09: fffff52001424f79
R10: fffff52001424f79 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff92001424f7a R14: 0000000000000000 R15: 0000000000000000
FS: 000000000214f300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f057803e088 CR3: 0000000037b7b000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 90 55 41 57 41 add %dl,0x41574155(%rax)
6: 56 push %rsi
7: 41 54 push %r12
9: 53 push %rbx
a: 41 89 f6 mov %esi,%r14d
d: 49 89 ff mov %rdi,%r15
10: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
17: fc ff df
1a: e8 73 02 92 ff callq 0xff920292
1f: 49 8d 5f 20 lea 0x20(%r15),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 29 55 db ff callq 0xffdb5562
39: 48 8b 2b mov (%rbx),%rbp
3c: 48 89 e8 mov %rbp,%rax
3f: 48 rex.W