R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fffd2c73d9f R14: 00007fe182159300 R15: 0000000000022000 general protection fault, probably for non-canonical address 0xdffffc0000000018: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7] CPU: 0 PID: 11771 Comm: syz-executor.1 Tainted: G W 5.17.0-next-20220323-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:io_commit_cqring fs/io_uring.c:1812 [inline] RIP: 0010:io_kill_timeouts+0x267/0x2ce fs/io_uring.c:10297 Code: 74 09 3c 03 7f 05 e8 c5 ca a7 f8 49 8d bc 24 c0 00 00 00 b8 ff ff 37 00 44 8b ad 40 03 00 00 48 89 fa 48 c1 e0 2a 48 c1 ea 03 <8a> 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 fd RSP: 0018:ffffc900027bfcf8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000018 RSI: ffffffff817ef121 RDI: 00000000000000c0 RBP: ffff88807e672000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff817ef108 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88807e672040 R15: 0000000000000001 FS: 00007fe182159700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f616c0c7f80 CR3: 000000007f8b6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: io_ring_ctx_wait_and_kill+0x1c2/0x327 fs/io_uring.c:10317 io_uring_create fs/io_uring.c:11385 [inline] io_uring_setup.cold+0x10a3/0x263b fs/io_uring.c:11412 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fe181089049 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe182159168 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007fe18119bf60 RCX: 00007fe181089049 RDX: 0000000000000000 RSI: 0000000020000900 RDI: 00000000000039b9 RBP: 00007fe1821591d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fffd2c73d9f R14: 00007fe182159300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:io_commit_cqring fs/io_uring.c:1812 [inline] RIP: 0010:io_kill_timeouts+0x267/0x2ce fs/io_uring.c:10297 Code: 74 09 3c 03 7f 05 e8 c5 ca a7 f8 49 8d bc 24 c0 00 00 00 b8 ff ff 37 00 44 8b ad 40 03 00 00 48 89 fa 48 c1 e0 2a 48 c1 ea 03 <8a> 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 fd RSP: 0018:ffffc900027bfcf8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000018 RSI: ffffffff817ef121 RDI: 00000000000000c0 RBP: ffff88807e672000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff817ef108 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88807e672040 R15: 0000000000000001 FS: 00007fe182159700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f616c0c7f80 CR3: 000000007f8b6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 74 09 je 0xb 2: 3c 03 cmp $0x3,%al 4: 7f 05 jg 0xb 6: e8 c5 ca a7 f8 callq 0xf8a7cad0 b: 49 8d bc 24 c0 00 00 lea 0xc0(%r12),%rdi 12: 00 13: b8 ff ff 37 00 mov $0x37ffff,%eax 18: 44 8b ad 40 03 00 00 mov 0x340(%rbp),%r13d 1f: 48 89 fa mov %rdi,%rdx 22: 48 c1 e0 2a shl $0x2a,%rax 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 8a 14 02 mov (%rdx,%rax,1),%dl <-- trapping instruction 2d: 48 89 f8 mov %rdi,%rax 30: 83 e0 07 and $0x7,%eax 33: 83 c0 03 add $0x3,%eax 36: 38 d0 cmp %dl,%al 38: 7c 09 jl 0x43 3a: 84 d2 test %dl,%dl 3c: 74 05 je 0x43 3e: e8 .byte 0xe8 3f: fd std