------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: timer_list hint: print_daily_error_info+0x0/0x490 WARNING: CPU: 0 PID: 3638 at lib/debugobjects.c:517 debug_print_object lib/debugobjects.c:514 [inline] WARNING: CPU: 0 PID: 3638 at lib/debugobjects.c:517 __debug_check_no_obj_freed lib/debugobjects.c:978 [inline] WARNING: CPU: 0 PID: 3638 at lib/debugobjects.c:517 debug_check_no_obj_freed+0x38e/0x4e0 lib/debugobjects.c:1008 Modules linked in: CPU: 0 PID: 3638 Comm: syz-executor Not tainted 6.1.111-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:debug_print_object lib/debugobjects.c:514 [inline] RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:978 [inline] RIP: 0010:debug_check_no_obj_freed+0x38e/0x4e0 lib/debugobjects.c:1008 Code: ef e8 56 dc a3 fd 4c 8b 45 00 48 c7 c7 20 77 5d 8b 48 c7 c6 e0 73 5d 8b 48 c7 c2 80 78 5d 8b 8b 0c 24 49 89 d9 e8 b2 4c 14 fd <0f> 0b ff 05 f2 c4 5b 0a 48 83 c5 30 48 89 e8 48 c1 e8 03 48 b9 00 RSP: 0018:ffffc90003fffa80 EFLAGS: 00010246 RAX: 7cf1bed825a79600 RBX: ffffffff824ae2f0 RCX: ffff88802d039dc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8b0dda60 R08: ffffffff8152a48e R09: fffff520007ffeb1 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801b292698 R13: ffffffff975aefe8 R14: ffff88801b293000 R15: ffff888065aabd08 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe5d583008 CR3: 000000007e4b4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: slab_free_hook mm/slub.c:1699 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x205/0x3c0 mm/slub.c:3674 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7a/0xe0 fs/super.c:1470 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:203 exit_task_work include/linux/task_work.h:39 [inline] do_exit+0xa73/0x26a0 kernel/exit.c:871 do_group_exit+0x202/0x2b0 kernel/exit.c:1021 __do_sys_exit_group kernel/exit.c:1032 [inline] __se_sys_exit_group kernel/exit.c:1030 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1030 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f7404d7def9 Code: Unable to access opcode bytes at 0x7f7404d7decf. RSP: 002b:00007ffe0ef0a518 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f7404df0a86 RCX: 00007f7404d7def9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000010 R08: 00007ffe0ef082b6 R09: 00007ffe0ef0b7d0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe0ef0b7d0 R13: 00007f7404df0a14 R14: 0000555559d9d4a8 R15: 00007ffe0ef0c890