syzbot
kernel BUG in ext4_write_inline_data_end
Status:
fixed on 2023/02/02 00:40
Reported-by: syzbot+8234f4fea762dd893f3d@syzkaller.appspotmail.com
Fix commit:
5c099c4fdc43
ext4: fix kernel BUG in 'ext4_write_inline_data_end()'
First crash: 1401d, last: 1340d
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Similar bugs (15)
| 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 |
1298d |
2122d
|
22/29 |
fixed on 2023/02/24 13:50
|
| android-54 |
kernel BUG in ext4_write_inline_data_end
|
-1 |
syz, C |
|
|
4 |
1482d |
1616d
|
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 |
1549d |
1616d
|
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 |
19d |
1047d
|
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 |
46d |
1500d
|
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 |
16d |
51d
|
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 |
481d |
1242d
|
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 |
593d |
996d
|
0/2 |
auto-obsoleted due to no activity on 2025/03/30 21:55
|
| linux-4.19 |
kernel BUG in ext4_write_inline_data_end
ext4
|
-1 |
syz, C |
|
error |
12 |
1252d |
1998d
|
0/1 |
upstream: reported C repro on 2021/02/14 13:39
|
| upstream |
kernel BUG in ext4_write_inline_data_end (3)
ext4
prio:normal
|
-1 |
syz |
|
|
1 |
7d16h |
21d
|
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 |
45d |
1164d
|
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 |
955d |
1252d
|
25/29 |
fixed on 2024/01/30 23:26
|
| android-54 |
kernel BUG in ext4_write_inline_data_end (2)
ext4
|
-1 |
syz |
|
|
9 |
524d |
1288d
|
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 |
1338d |
1924d
|
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 |
47d |
916d
|
29/29 |
fixed on 2026/07/15 08:27
|
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Last patch testing requests (6)
Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/ext4/inline.c:227!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 480 Comm: syz-executor283 Not tainted 5.15.74-syzkaller-00001-g4ec71a9ec769 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:ext4_write_inline_data fs/ext4/inline.c:227 [inline]
RIP: 0010:ext4_write_inline_data_end+0xdff/0xe10 fs/ext4/inline.c:782
Code: f7 e8 05 ac c6 ff e9 20 fa ff ff e8 0b b8 d5 02 e8 86 5f 84 ff 0f 0b e8 7f 5f 84 ff 0f 0b e8 78 5f 84 ff 0f 0b e8 71 5f 84 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41
RSP: 0018:ffffc9000050f100 EFLAGS: 00010293
RAX: ffffffff81ed321f RBX: 0000000000000048 RCX: ffff8881069c0000
RDX: 0000000000000000 RSI: 0000000000000048 RDI: 0000000000000051
RBP: ffffc9000050f250 R08: ffffffff81ed2822 R09: ffffed1020040c4b
R10: ffffed1020040c4b R11: 1ffff11020040c4a R12: 0000000000000051
R13: ffff8881069c0b60 R14: 0000000000000048 R15: dffffc0000000000
FS: 00007f11627c2700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe4dd53098 CR3: 000000011d0d1000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
ext4_da_write_end+0x3d7/0xa70 fs/ext4/inode.c:3076
generic_perform_write+0x3c7/0x5d0 mm/filemap.c:3836
ext4_buffered_write_iter+0x49b/0x630 fs/ext4/file.c:271
ext4_file_write_iter+0x456/0x1dc0
do_iter_readv_writev+0x52a/0x720
do_iter_write+0x1f4/0x760 fs/read_write.c:855
vfs_iter_write+0x7c/0xa0 fs/read_write.c:896
iter_file_splice_write+0x810/0xfd0 fs/splice.c:689
do_splice_from fs/splice.c:767 [inline]
direct_splice_actor+0xfe/0x130 fs/splice.c:934
splice_direct_to_actor+0x4d4/0xbd0 fs/splice.c:889
do_splice_direct+0x2a0/0x3f0 fs/splice.c:977
do_sendfile+0x63b/0xfd0 fs/read_write.c:1249
__do_sys_sendfile64 fs/read_write.c:1317 [inline]
__se_sys_sendfile64 fs/read_write.c:1303 [inline]
__x64_sys_sendfile64+0x1ce/0x230 fs/read_write.c:1303
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f11628169a9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 00 00 90 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:00007f11627c2208 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f116289b7a8 RCX: 00007f11628169a9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f116289b7a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000080000041 R11: 0000000000000246 R12: 00007f116289b7ac
R13: 00007ffe4dd5303f R14: 00007f11627c2300 R15: 0000000000022000
</TASK>
Modules linked in:
---[ end trace 9866885b1de74a8b ]---
RIP: 0010:ext4_write_inline_data fs/ext4/inline.c:227 [inline]
RIP: 0010:ext4_write_inline_data_end+0xdff/0xe10 fs/ext4/inline.c:782
Code: f7 e8 05 ac c6 ff e9 20 fa ff ff e8 0b b8 d5 02 e8 86 5f 84 ff 0f 0b e8 7f 5f 84 ff 0f 0b e8 78 5f 84 ff 0f 0b e8 71 5f 84 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41
RSP: 0018:ffffc9000050f100 EFLAGS: 00010293
RAX: ffffffff81ed321f RBX: 0000000000000048 RCX: ffff8881069c0000
RDX: 0000000000000000 RSI: 0000000000000048 RDI: 0000000000000051
RBP: ffffc9000050f250 R08: ffffffff81ed2822 R09: ffffed1020040c4b
R10: ffffed1020040c4b R11: 1ffff11020040c4a R12: 0000000000000051
R13: ffff8881069c0b60 R14: 0000000000000048 R15: dffffc0000000000
FS: 00007f11627c2700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe4dd53098 CR3: 000000011d0d1000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
* Struck through repros no longer work on HEAD.