------------[ cut here ]------------ WARNING: CPU: 0 PID: 2766 at fs/io_uring.c:8917 io_disable_sqo_submit fs/io_uring.c:8917 [inline] WARNING: CPU: 0 PID: 2766 at fs/io_uring.c:8917 io_uring_flush+0x3c3/0x470 fs/io_uring.c:9134 Modules linked in: CPU: 0 PID: 2766 Comm: syz-executor.2 Not tainted 5.11.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:io_disable_sqo_submit fs/io_uring.c:8917 [inline] RIP: 0010:io_uring_flush+0x3c3/0x470 fs/io_uring.c:9134 Code: c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 d5 66 95 ff 0f 0b e9 22 fd ff ff e8 c9 66 95 ff 0f 0b e9 f7 fd ff ff e8 bd 66 95 ff <0f> 0b e9 1b fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c bc fc ff RSP: 0018:ffffc90015fe78f8 EFLAGS: 00010246 RAX: ffffffff81e7b603 RBX: ffff888015bfa800 RCX: 0000000000040000 RDX: ffffc9000d34d000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffff888028591000 R08: dffffc0000000000 R09: fffffbfff1ae72e6 R10: fffffbfff1ae72e6 R11: 0000000000000000 R12: ffff888020e96a01 R13: 1ffff11002f220f5 R14: ffff8880285910d0 R15: ffff8880179107a8 FS: 00007fc2daf86700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000015a0004 CR3: 000000001c0b0000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: filp_close+0xad/0x150 fs/open.c:1280 close_files fs/file.c:401 [inline] put_files_struct+0x1d1/0x360 fs/file.c:416 copy_process+0x3f7b/0x5640 kernel/fork.c:2354 kernel_clone+0x21a/0x7d0 kernel/fork.c:2464 __do_sys_clone3 kernel/fork.c:2739 [inline] __se_sys_clone3+0x36b/0x410 kernel/fork.c:2723 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fc2daf85c68 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020000300 RBP: 000000000119bfb8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007fff78242fef R14: 00007fc2daf869c0 R15: 000000000119bf8c