------------[ cut here ]------------ ODEBUG: free active (active state 1) object type: rcu_head hint: 0x0 WARNING: CPU: 0 PID: 32637 at lib/debugobjects.c:488 debug_print_object+0x67/0x80 lib/debugobjects.c:485 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 32637 Comm: syz-executor.3 Not tainted 5.9.0-rc1-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+0xb3/0xec lib/dump_stack.c:118 panic+0x115/0x2fa kernel/panic.c:231 __warn.cold.13+0x20/0x25 kernel/panic.c:600 report_bug+0xc0/0xf0 lib/bug.c:198 handle_bug+0x35/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x13/0x60 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:debug_print_object+0x67/0x80 lib/debugobjects.c:485 Code: 8b 43 10 83 c2 01 4c 89 e6 48 c7 c7 20 55 f1 83 89 15 11 dc 21 04 8b 4b 14 4c 8b 45 00 48 8b 14 c5 00 19 7a 83 e8 34 5f 4e ff <0f> 0b 5b 83 05 1b 0f 95 02 01 5d 41 5c c3 83 05 10 0f 95 02 01 c3 RSP: 0018:ffffc90002077e40 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffff88810f0b5050 RCX: 0000000000000001 RDX: 0000000080000001 RSI: ffffffff8401b939 RDI: 00000000ffffffff RBP: ffffffff842f59c0 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: f33c643fd81ac911 R12: ffffffff83ef3d14 R13: ffff88810f0b5050 R14: 0000000000000000 R15: ffffffff842f59c0 __debug_check_no_obj_freed lib/debugobjects.c:967 [inline] debug_check_no_obj_freed+0x1bb/0x1dd lib/debugobjects.c:998 kmem_cache_free.part.65+0x145/0x1d0 mm/slab.c:3692 task_work_run+0x68/0xb0 kernel/task_work.c:141 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:139 [inline] exit_to_user_mode_prepare+0x1e2/0x1f0 kernel/entry/common.c:166 syscall_exit_to_user_mode+0x59/0x2b0 kernel/entry/common.c:241 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d579 Code: 5d 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f329cbc1c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d579 RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 000000000118d028 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000000 R11: 0000000000000246 R12: 000000000118cfec R13: 00007fffebaf68bf R14: 00007f329cbc29c0 R15: 000000000118cfec Kernel Offset: disabled Rebooting in 86400 seconds..