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:00007fc8c2dfe0e8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007fc8c3f9bf60 RCX: 00007fc8c3e89049 RDX: 0000000020ffc000 RSI: 00000000200001c0 RDI: 0000000000006cee RBP: 00000000200001c0 R08: 0000000020000280 R09: 0000000020000280 R10: 0000000020000240 R11: 0000000000000206 R12: 0000000020000280 R13: 0000000020ffc000 R14: 0000000020000240 R15: 0000000020ffe000 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: 12033 Comm: syz-executor.5 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:ffffc9000b63fcf8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000018 RSI: ffffffff817ef121 RDI: 00000000000000c0 RBP: ffff888075f0b000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff817ef108 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888075f0b040 R15: 0000000000000001 FS: 00007fc8c2dfe700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2d4c9691b8 CR3: 000000005e505000 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: 0033:0x7fc8c3e89049 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:00007fc8c2dfe0e8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007fc8c3f9bf60 RCX: 00007fc8c3e89049 RDX: 0000000020ffc000 RSI: 00000000200001c0 RDI: 0000000000006cee RBP: 00000000200001c0 R08: 0000000020000280 R09: 0000000020000280 R10: 0000000020000240 R11: 0000000000000206 R12: 0000000020000280 R13: 0000000020ffc000 R14: 0000000020000240 R15: 0000000020ffe000 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:ffffc9000b63fcf8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000018 RSI: ffffffff817ef121 RDI: 00000000000000c0 RBP: ffff888075f0b000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff817ef108 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888075f0b040 R15: 0000000000000001 FS: 00007fc8c2dfe700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2d4c9691b8 CR3: 000000005e505000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ff c3 inc %ebx 2: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 9: 00 00 00 c: 0f 1f 40 00 nopl 0x0(%rax) 10: 48 89 f8 mov %rdi,%rax 13: 48 89 f7 mov %rsi,%rdi 16: 48 89 d6 mov %rdx,%rsi 19: 48 89 ca mov %rcx,%rdx 1c: 4d 89 c2 mov %r8,%r10 1f: 4d 89 c8 mov %r9,%r8 22: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 27: 0f 05 syscall * 29: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 2f: 73 01 jae 0x32 31: c3 retq 32: 48 c7 c1 b8 ff ff ff mov $0xffffffffffffffb8,%rcx 39: f7 d8 neg %eax 3b: 64 89 01 mov %eax,%fs:(%rcx) 3e: 48 rex.W