------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: timer_list hint: print_daily_error_info+0x0/0x430 fs/ext4/super.c:1334 WARNING: CPU: 1 PID: 20645 at lib/debugobjects.c:505 debug_print_object+0x194/0x2b0 lib/debugobjects.c:505 Modules linked in: CPU: 1 PID: 20645 Comm: syz-executor.1 Not tainted 5.10.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:debug_print_object+0x194/0x2b0 lib/debugobjects.c:505 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 e3 00 00 00 48 8b 14 dd c0 54 60 8b 4c 89 ee 48 c7 c7 80 ac fe 88 e8 83 45 a6 04 <0f> 0b 83 05 ef 5c 77 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc9000947f990 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff5200128ff24 RBP: 0000000000000003 R08: 0000000000000001 R09: ffff8880b9f2011b R10: ffffed10173e4023 R11: 0000000000000001 R12: ffffffff88acd4a0 R13: ffffffff88feb200 R14: ffffffff815aa6a0 R15: dffffc0000000000 FS: 00007f1778753700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000970004 CR3: 0000000011e19000 CR4: 0000000000350ee0 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:987 [inline] debug_check_no_obj_freed+0x309/0x430 lib/debugobjects.c:1018 slab_free_hook mm/slub.c:1536 [inline] slab_free_freelist_hook+0x107/0x150 mm/slub.c:1577 slab_free mm/slub.c:3142 [inline] kfree+0xdb/0x400 mm/slub.c:4124 ext4_fill_super+0x7bf/0xc000 fs/ext4/super.c:5181 mount_bdev+0x2cb/0x3b0 fs/super.c:1419 legacy_get_tree+0xfe/0x200 fs/fs_context.c:592 vfs_get_tree+0x7f/0x330 fs/super.c:1549 do_new_mount fs/namespace.c:2875 [inline] path_mount+0x7dd/0x1b60 fs/namespace.c:3205 do_mount fs/namespace.c:3218 [inline] __do_sys_mount fs/namespace.c:3426 [inline] __se_sys_mount fs/namespace.c:3403 [inline] __x64_sys_mount+0x1f5/0x260 fs/namespace.c:3403 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x46748a Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1778752fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5