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ODEBUG: free active (active state 0) object type: work_struct hint: io_ring_file_ref_switch+0x0/0xbc0 include/linux/refcount.h:191
WARNING: CPU: 0 PID: 8343 at lib/debugobjects.c:484 debug_print_object+0x160/0x210 lib/debugobjects.c:481
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8343 Comm: syz-executor.1 Not tainted 5.5.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x128/0x182 lib/dump_stack.c:118
 panic+0x22a/0x4e3 kernel/panic.c:221
 __warn.cold.10+0x25/0x26 kernel/panic.c:582
 report_bug+0x1ad/0x270 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x123/0x210 arch/x86/kernel/traps.c:267
 do_invalid_op+0x31/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:debug_print_object+0x160/0x210 lib/debugobjects.c:481
Code: 8d 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 96 00 00 00 48 8b 14 dd a0 5a 8d 87 4c 89 f6 48 c7 c7 00 50 8d 87 e8 3c 7e fb fd <0f> 0b 83 05 2b d4 2d 06 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0000:ffffc90002d37c80 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000007 RDI: ffffffff8b3d6360
RBP: 0000000000000001 R08: ffffed1015d045c9 R09: ffffed1015d045c9
R10: ffffed1015d045c8 R11: ffff8880ae822e43 R12: ffffffff88969c00
R13: ffffffff814242c0 R14: ffffffff878d5700 R15: ffff88809e34ee58
 __debug_check_no_obj_freed lib/debugobjects.c:963 [inline]
 debug_check_no_obj_freed+0x2de/0x454 lib/debugobjects.c:994
 kfree+0xf4/0x2b0 mm/slab.c:3756
 io_sqe_files_unregister+0x2ca/0x520 fs/io_uring.c:4452
 io_ring_ctx_free fs/io_uring.c:5397 [inline]
 io_ring_ctx_wait_and_kill+0x391/0x8b0 fs/io_uring.c:5466
 io_uring_release+0x39/0x50 fs/io_uring.c:5474
 __fput+0x256/0x780 fs/file_table.c:280
 task_work_run+0x103/0x180 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x23d/0x2d0 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:278 [inline]
 do_syscall_64+0x4f8/0x5e0 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4163e1
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffc9df63c80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004163e1
RDX: 0000001b2ee20000 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00ffffffffffffff R09: 00ffffffffffffff
R10: 00007ffc9df63d60 R11: 0000000000000293 R12: 000000000076c900
R13: 000000000076c900 R14: 0000000000012d83 R15: 000000000076bf0c
Kernel Offset: disabled
Rebooting in 86400 seconds..