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: 18652 Comm: syz-executor.0 Not tainted 5.12.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:io_commit_cqring+0x37f/0xc10 fs/io_uring.c:1318 Code: 74 08 3c 03 0f 8e fa 05 00 00 48 8d bb c0 00 00 00 41 8b ac 24 00 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b7 RSP: 0018:ffffc9000b327c78 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90002151000 RDX: 0000000000000018 RSI: ffffffff81db8861 RDI: 00000000000000c0 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 R10: fffff52001664f8f R11: 0000000000000000 R12: ffff88803d2fe000 R13: 0000000000000000 R14: 1ffff92001664fab R15: ffff88803d2fe0c0 FS: 00007f0e8dcbf700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000970004 CR3: 0000000012e8e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: io_kill_timeouts+0x2b5/0x320 fs/io_uring.c:8606 io_ring_ctx_wait_and_kill+0x1da/0x400 fs/io_uring.c:8629 io_uring_create fs/io_uring.c:9572 [inline] io_uring_setup+0x10da/0x2ae0 fs/io_uring.c:9599 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466459 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:00007f0e8dcbf188 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000007e05 RBP: 00007f0e8dcbf1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000a9fb1f R14: 00007f0e8dcbf300 R15: 0000000000022000 Modules linked in: ---[ end trace 75cbf326a6fdeb37 ]--- RIP: 0010:io_commit_cqring+0x37f/0xc10 fs/io_uring.c:1318 Code: 74 08 3c 03 0f 8e fa 05 00 00 48 8d bb c0 00 00 00 41 8b ac 24 00 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b7 RSP: 0018:ffffc9000b327c78 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90002151000 RDX: 0000000000000018 RSI: ffffffff81db8861 RDI: 00000000000000c0 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 R10: fffff52001664f8f R11: 0000000000000000 R12: ffff88803d2fe000 R13: 0000000000000000 R14: 1ffff92001664fab R15: ffff88803d2fe0c0 FS: 00007f0e8dcbf700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000970004 CR3: 0000000012e8e000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400