syzbot
kernel BUG in ext4_write_inline_data_end
Status:
upstream: reported C repro on 2021/02/14 13:39
Subsystems:
ext4
[Documentation on labels]
Reported-by: syzbot+ef030bd2767d6d562429@syzkaller.appspotmail.com
First crash: 2001d, last: 1254d
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Similar bugs (25)
| Kernel |
Title |
Rank
🛈
|
Repro |
Cause bisect |
Fix bisect |
Count |
Last |
Reported |
Patched |
Status |
| upstream |
kernel BUG at fs/ext4/inline.c:LINE!
ext4
|
-1 |
syz, C |
done |
done |
76 |
1301d |
2124d
|
22/29 |
fixed on 2023/02/24 13:50
|
| android-54 |
kernel BUG in ext4_write_inline_data_end
|
-1 |
syz, C |
|
|
4 |
1485d |
1618d
|
2/2 |
fixed on 2022/09/27 22:24
|
| android-5-10 |
kernel BUG in ext4_write_inline_data_end
|
-1 |
syz, C |
error |
|
3 |
1551d |
1618d
|
0/2 |
closed as dup on 2022/03/04 15:25
|
| android-5-15 |
kernel BUG in ext4_write_inline_data_end (2)
origin:upstream
|
-1 |
syz, C |
|
error |
16 |
21d |
1049d
|
0/2 |
upstream: reported C repro on 2023/09/24 12:05
|
| android-5-10 |
kernel BUG in ext4_write_inline_data_end (2)
|
-1 |
syz, C |
error |
|
23 |
48d |
1503d
|
2/2 |
upstream: reported C repro on 2022/06/27 15:18
|
| android-6-1 |
kernel BUG in ext4_write_inline_data_end (2)
origin:upstream
|
-1 |
syz |
|
|
1 |
18d |
53d
|
0/2 |
premoderation: reported syz repro on 2026/06/16 00:15
|
| linux-6.1 |
kernel BUG in ext4_write_inline_data_end
origin:upstream
|
-1 |
syz, C |
|
error |
44 |
483d |
1245d
|
0/3 |
upstream: reported C repro on 2023/03/12 18:03
|
| android-6-1 |
kernel BUG in ext4_write_inline_data_end
origin:lts
|
-1 |
syz, C |
error |
done |
2 |
595d |
998d
|
0/2 |
auto-obsoleted due to no activity on 2025/03/30 21:55
|
| android-5-15 |
kernel BUG in ext4_write_inline_data_end
|
-1 |
syz, C |
error |
|
11 |
1342d |
1403d
|
2/2 |
fixed on 2023/02/02 00:40
|
| upstream |
kernel BUG in ext4_write_inline_data_end (3)
ext4
prio:normal
|
-1 |
syz |
|
|
1 |
10d |
23d
|
0/29 |
upstream: reported syz repro on 2026/07/16 07:50
|
| linux-5.15 |
kernel BUG in ext4_write_inline_data_end
origin:upstream
|
-1 |
syz, C |
|
error |
9 |
48d |
1166d
|
0/3 |
upstream: reported C repro on 2023/05/30 10:48
|
| upstream |
kernel BUG in ext4_write_inline_data_end
ext4
|
-1 |
syz, C |
error |
done |
32 |
957d |
1255d
|
25/29 |
fixed on 2024/01/30 23:26
|
| android-54 |
kernel BUG in ext4_write_inline_data_end (2)
ext4
|
-1 |
syz |
|
|
9 |
526d |
1291d
|
0/2 |
upstream: reported syz repro on 2023/01/25 15:39
|
| linux-4.14 |
kernel BUG in ext4_write_inline_data_end
|
-1 |
syz, C |
|
error |
4 |
1341d |
1926d
|
0/1 |
upstream: reported C repro on 2021/04/30 02:18
|
| upstream |
kernel BUG in ext4_write_inline_data_end (2)
ext4
|
-1 |
syz, C |
inconclusive |
error |
174 |
50d |
918d
|
29/29 |
fixed on 2026/07/15 08:27
|
| linux-4.14 |
kernel BUG in ext4_write_inline_data
ext4
|
-1 |
syz, C |
|
|
4 |
1277d |
1373d
|
0/1 |
upstream: reported C repro on 2022/11/04 18:44
|
| upstream |
kernel BUG in ext4_write_inline_data
ext4
|
-1 |
syz, C |
error |
|
36 |
755d |
1240d
|
27/29 |
fixed on 2024/08/22 01:52
|
| upstream |
kernel BUG in ext4_write_inline_data (4)
ext4
|
-1 |
syz, C |
error |
|
13 |
93d |
187d
|
29/29 |
fixed on 2026/05/21 07:49
|
| linux-6.1 |
kernel BUG in ext4_write_inline_data
origin:upstream
|
-1 |
syz, C |
|
error |
13 |
178d |
516d
|
0/3 |
upstream: reported C repro on 2025/03/10 13:01
|
| android-6-1 |
kernel BUG in ext4_write_inline_data
origin:lts
|
-1 |
syz, C |
error |
error |
33 |
9d18h |
1132d
|
0/2 |
upstream: reported C repro on 2023/07/02 21:30
|
| upstream |
kernel BUG in ext4_write_inline_data (3)
ext4
|
-1 |
syz, C |
error |
|
8 |
220d |
329d
|
29/29 |
fixed on 2026/01/07 12:29
|
| upstream |
kernel BUG in ext4_write_inline_data (5)
prio:high
ext4
|
-1 |
syz |
error |
|
12 |
2d13h |
60d
|
0/29 |
upstream: reported syz repro on 2026/06/09 08:13
|
| upstream |
kernel BUG in ext4_write_inline_data (2)
ext4
|
-1 |
syz, C |
error |
|
46 |
411d |
625d
|
29/29 |
fixed on 2025/07/08 00:33
|
| android-5-10 |
kernel BUG in ext4_write_inline_data
ext4
|
-1 |
syz, C |
error |
inconclusive |
3 |
1273d |
1371d
|
2/2 |
fixed on 2023/05/04 14:51
|
| android-54 |
kernel BUG in ext4_write_inline_data
|
-1 |
syz, C |
|
|
3 |
1333d |
1371d
|
2/2 |
fixed on 2023/04/05 17:17
|
▶
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Fix bisection attempts (2)
Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/ext4/inline.c:751!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8821 Comm: syz-executor351 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:ext4_write_inline_data_end+0x483/0x650 fs/ext4/inline.c:751
Code: 02 00 0f 85 c2 01 00 00 48 8b 7d 28 ba e9 02 00 00 48 c7 c6 60 51 7a 88 45 31 e4 e8 27 b2 0e 00 e9 6f ff ff ff e8 4d 84 84 ff <0f> 0b e8 46 84 84 ff 49 8d 7c 24 08 48 89 f8 48 c1 e8 03 42 80 3c
RSP: 0018:ffff888092e9f8a0 EFLAGS: 00010293
RAX: ffff8880aaa6c480 RBX: 0000000000000010 RCX: ffffffff81ddfde2
RDX: 0000000000000000 RSI: ffffffff81de0123 RDI: 0000000000000001
RBP: ffff88808cbf4430 R08: ffffffff8cd525c0 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffea00023b9300
R13: 0000000000000010 R14: 1ffff110125d3f18 R15: ffff888092e9f8e0
FS: 00007f3b3974a700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3b39729718 CR3: 00000000b3678000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ext4_write_end+0x1de/0xec0 fs/ext4/inode.c:1423
ext4_da_write_end+0x860/0xa70 fs/ext4/inode.c:3170
generic_perform_write+0x2ae/0x4d0 mm/filemap.c:3181
__generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295
ext4_file_write_iter+0x2fe/0xf20 fs/ext4/file.c:272
call_write_iter include/linux/fs.h:1821 [inline]
new_sync_write fs/read_write.c:474 [inline]
__vfs_write+0x51b/0x770 fs/read_write.c:487
vfs_write+0x1f3/0x540 fs/read_write.c:549
ksys_write+0x12b/0x2a0 fs/read_write.c:599
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f3b3979dcc9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3b3974a2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000024 RCX: 00007f3b3979dcc9
RDX: 0000000000000010 RSI: 0000000020000280 RDI: 0000000000000003
RBP: 00007f3b398234a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3b398234a0
R13: 00007f3b397f00bc R14: 0030656c69662f2e R15: e5d26e84aa4cf3c6
Modules linked in:
---[ end trace e9cf05c093d934e4 ]---
RIP: 0010:ext4_write_inline_data_end+0x483/0x650 fs/ext4/inline.c:751
Code: 02 00 0f 85 c2 01 00 00 48 8b 7d 28 ba e9 02 00 00 48 c7 c6 60 51 7a 88 45 31 e4 e8 27 b2 0e 00 e9 6f ff ff ff e8 4d 84 84 ff <0f> 0b e8 46 84 84 ff 49 8d 7c 24 08 48 89 f8 48 c1 e8 03 42 80 3c
RSP: 0018:ffff888092e9f8a0 EFLAGS: 00010293
RAX: ffff8880aaa6c480 RBX: 0000000000000010 RCX: ffffffff81ddfde2
RDX: 0000000000000000 RSI: ffffffff81de0123 RDI: 0000000000000001
RBP: ffff88808cbf4430 R08: ffffffff8cd525c0 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffea00023b9300
R13: 0000000000000010 R14: 1ffff110125d3f18 R15: ffff888092e9f8e0
FS: 00007f3b3974a700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3b39729718 CR3: 00000000b3678000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
* Struck through repros no longer work on HEAD.