------------[ cut here ]------------ WARNING: CPU: 1 PID: 2947 at fs/io_uring.c:9131 io_uring_flush+0x326/0x3a0 fs/io_uring.c:9131 Modules linked in: CPU: 1 PID: 2947 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_uring_flush+0x326/0x3a0 fs/io_uring.c:9131 Code: e9 58 fe ff ff e8 4a de 9a ff 49 c7 84 24 a0 00 00 00 00 00 00 00 e9 aa fe ff ff e8 24 9e dd ff e9 91 fd ff ff e8 2a de 9a ff <0f> 0b e9 51 ff ff ff e8 1e 9e dd ff e9 06 fd ff ff 4c 89 f7 e8 11 RSP: 0018:ffffc9001762faa0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888083b11bc0 RSI: ffffffff81d7ebe6 RDI: 0000000000000003 RBP: ffff88801be99400 R08: 0000000000000000 R09: 000000007dcb3c01 R10: ffffffff81d7eb35 R11: 0000000000000000 R12: ffff888087f3c000 R13: ffff88807dcb3c01 R14: ffff888087f3c040 R15: ffff888087f3c0d0 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f664e291000 CR3: 000000009e84f000 CR4: 0000000000350ee0 Call Trace: filp_close+0xb4/0x170 fs/open.c:1280 close_files fs/file.c:401 [inline] put_files_struct fs/file.c:416 [inline] put_files_struct+0x1cc/0x350 fs/file.c:413 exit_files+0x7e/0xa0 fs/file.c:433 do_exit+0xc22/0x2ae0 kernel/exit.c:820 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x427/0x20f0 kernel/signal.c:2773 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: Unable to access opcode bytes at RIP 0x45e1ef. RSP: 002b:00007fe91c722cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000119bf88 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000119bf88 RBP: 000000000119bf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffdbf6d9ddf R14: 00007fe91c7239c0 R15: 000000000119bf8c