ODEBUG: free active (active state 0) object type: timer_list hint: print_daily_error_info+0x0/0x4b0 fs/ext4/ext4.h:2034 WARNING: CPU: 0 PID: 14991 at lib/debugobjects.c:508 debug_print_object lib/debugobjects.c:505 [inline] WARNING: CPU: 0 PID: 14991 at lib/debugobjects.c:508 __debug_check_no_obj_freed lib/debugobjects.c:987 [inline] WARNING: CPU: 0 PID: 14991 at lib/debugobjects.c:508 debug_check_no_obj_freed+0x44b/0x650 lib/debugobjects.c:1018 Modules linked in: CPU: 0 PID: 14991 Comm: syz-executor.1 Not tainted 5.12.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:debug_print_object lib/debugobjects.c:505 [inline] RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:987 [inline] RIP: 0010:debug_check_no_obj_freed+0x44b/0x650 lib/debugobjects.c:1018 Code: 4c 89 ef e8 07 d3 eb fd 4d 8b 45 00 48 c7 c7 80 54 0e 8a 48 c7 c6 a0 50 0e 8a 48 89 da 44 89 f1 4d 89 f9 31 c0 e8 85 cf 76 fd <0f> 0b 48 ba 00 00 00 00 00 fc ff df ff 05 5f c3 e4 09 48 8b 5c 24 RSP: 0018:ffffc9000249fa58 EFLAGS: 00010246 RAX: d14978cbec87f200 RBX: ffffffff8a0e5640 RCX: 0000000000040000 RDX: ffffc9000aa0a000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffff88801368bb78 R08: ffffffff81602402 R09: ffffed1017385fe8 R10: ffffed1017385fe8 R11: 0000000000000000 R12: ffff88801368bb74 R13: ffffffff89b0a640 R14: 0000000000000000 R15: ffffffff821db520 FS: 00007fd370fe3700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fda926ec718 CR3: 000000007e2c5000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: slab_free_hook mm/slub.c:1554 [inline] slab_free_freelist_hook+0x12a/0x200 mm/slub.c:1600 slab_free mm/slub.c:3161 [inline] kfree+0xcf/0x2b0 mm/slub.c:4213 ext4_fill_super+0x2200/0xfc30 fs/ext4/super.c:5182 mount_bdev+0x26c/0x3a0 fs/super.c:1367 legacy_get_tree+0xea/0x180 fs/fs_context.c:592 vfs_get_tree+0x86/0x270 fs/super.c:1497 do_new_mount fs/namespace.c:2903 [inline] path_mount+0x188a/0x29a0 fs/namespace.c:3233 do_mount fs/namespace.c:3246 [inline] __do_sys_mount fs/namespace.c:3454 [inline] __se_sys_mount+0x28c/0x320 fs/namespace.c:3431 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x46741a 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:00007fd370fe2fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 000000000046741a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fd370fe3000 RBP: 00007fd370fe3040 R08: 00007fd370fe3040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fd370fe3000 R15: 00000000200000c0