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WARNING: ODEBUG bug in ext4_fill_super

Status: closed as invalid on 2019/08/30 22:34
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+0bf8ddafbdf2c46eb6f3@syzkaller.appspotmail.com
First crash: 1715d, last: 1714d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
WARNING: ODEBUG bug in ext4_fill_super 4 (5) 2019/08/31 00:14
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING: ODEBUG bug in ext4_fill_super (3) ext4 C done 392 911d 1150d 20/26 fixed on 2021/11/10 00:50
upstream WARNING: ODEBUG bug in ext4_fill_super (2) ext4 C done 1094 1154d 1231d 0/26 closed as dup on 2020/12/22 11:33

Sample crash report:
EXT4-fs (loop4): ext4_check_descriptors: Inode bitmap for group 0 overlaps superblock
EXT4-fs (loop4): ext4_check_descriptors: Inode table for group 0 overlaps superblock
EXT4-fs (loop4): corrupt root inode, run e2fsck
EXT4-fs (loop4): mount failed
------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: percpu_counter hint: 0x0
WARNING: CPU: 0 PID: 9426 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: 9426 Comm: syz-executor.4 Not tainted 5.3.0-rc6-next-20190826 #73
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+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2dc/0x755 kernel/panic.c:220
 __warn.cold+0x2f/0x3c kernel/panic.c:581
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:debug_print_object+0x168/0x250 lib/debugobjects.c:481
Code: dd 60 6c e6 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 60 6c e6 87 48 c7 c7 c0 61 e6 87 e8 20 31 01 fe <0f> 0b 83 05 f3 67 83 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3
RSP: 0018:ffff8880570d7938 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815bd606 RDI: ffffed100ae1af19
RBP: ffff8880570d7978 R08: ffff8880570ca580 R09: ffffed1015d04109
R10: ffffed1015d04108 R11: ffff8880ae820847 R12: 0000000000000001
R13: ffffffff8935e800 R14: 0000000000000000 R15: ffff888087cb05b0
 __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:3755
 ext4_fill_super+0x8cb/0xcc80 fs/ext4/super.c:4684
 mount_bdev+0x304/0x3c0 fs/super.c:1407
 ext4_mount+0x35/0x40 fs/ext4/super.c:6019
 legacy_get_tree+0x113/0x220 fs/fs_context.c:651
 vfs_get_tree+0x8f/0x380 fs/super.c:1482
 do_new_mount fs/namespace.c:2796 [inline]
 do_mount+0x13b3/0x1c30 fs/namespace.c:3116
 ksys_mount+0xdb/0x150 fs/namespace.c:3325
 __do_sys_mount fs/namespace.c:3339 [inline]
 __se_sys_mount fs/namespace.c:3336 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3336
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c2ca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 9d 8d fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 7a 8d fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f856e025a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f856e025b40 RCX: 000000000045c2ca
RDX: 00007f856e025ae0 RSI: 0000000020000000 RDI: 00007f856e025b00
RBP: 0000000000001000 R08: 00007f856e025b40 R09: 00007f856e025ae0
R10: 0000000000000001 R11: 0000000000000206 R12: 0000000000000003
R13: 00000000004c89d6 R14: 00000000004df8f8 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (105):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/08/27 16:48 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 15:07 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 14:46 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 13:34 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 12:11 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 11:58 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 10:30 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 08:42 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 07:32 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 07:26 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 06:09 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 02:06 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/27 01:00 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 22:37 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 21:21 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 20:47 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 19:02 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 18:08 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 17:51 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 17:40 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 17:35 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 17:21 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 16:27 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 16:25 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 16:20 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 16:18 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 16:17 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 16:15 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 16:15 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 16:09 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 16:06 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 15:50 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 15:46 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 15:44 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 15:38 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 15:37 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 15:27 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 15:26 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 15:22 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 15:22 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 15:14 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 15:01 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
2019/08/26 14:57 linux-next ed858b88e6cb d21c5d9d .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.