device veth0_vlan entered promiscuous mode device veth1_vlan entered promiscuous mode ------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: work_struct hint: io_ring_file_ref_switch+0x0/0xac0 fs/io_uring.c:5595 WARNING: CPU: 0 PID: 9550 at lib/debugobjects.c:481 debug_print_object+0x168/0x250 lib/debugobjects.c:481 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 9550 Comm: syz-executor846 Not tainted 5.5.0-rc5-next-20200108-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+0x197/0x210 lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:176 [inline] fixup_bug arch/x86/kernel/traps.c:171 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:269 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:288 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:debug_print_object+0x168/0x250 lib/debugobjects.c:481 Code: dd 80 8b 91 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 80 8b 91 88 48 c7 c7 e0 80 91 88 e8 87 96 a2 fd <0f> 0b 83 05 43 e5 00 07 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3 RSP: 0018:ffffc90007ef7c30 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815e7896 RDI: fffff52000fdef78 RBP: ffffc90007ef7c70 R08: ffff8880a2ed2000 R09: ffffed1015d045c9 R10: ffffed1015d045c8 R11: ffff8880ae822e43 R12: 0000000000000001 R13: ffffffff89b7c540 R14: ffffffff814c5450 R15: ffff8880a2554cb0 __debug_check_no_obj_freed lib/debugobjects.c:963 [inline] debug_check_no_obj_freed+0x2d4/0x43f lib/debugobjects.c:994 kfree+0xf8/0x2c0 mm/slab.c:3756 io_sqe_files_unregister+0x1fb/0x2f0 fs/io_uring.c:5041 io_ring_ctx_free fs/io_uring.c:5984 [inline] io_ring_ctx_wait_and_kill+0x430/0x9a0 fs/io_uring.c:6053 io_uring_release+0x42/0x50 fs/io_uring.c:6061 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x316/0x380 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+0x676/0x790 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x403280 Code: 01 f0 ff ff 0f 83 c0 0f 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 0d 9d 2d 00 00 75 14 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 94 0f 00 00 c3 48 83 ec 08 e8 fa 04 00 00 RSP: 002b:00007fff23decbb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000403280 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000404730 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..