syzbot


kernel BUG in ext4_write_inline_data_end (2)

Status: upstream: reported C repro on 2024/02/02 09:24
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+0c89d865531d053abb2d@syzkaller.appspotmail.com
First crash: 420d, last: 28d
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: kernel BUG in ext4_write_inline_data (log)
Repro: C syz .config
  
Discussions (8)
Title Replies (including bot) Last reply
[syzbot] Monthly ext4 report (Feb 2025) 0 (1) 2025/02/21 09:41
[syzbot] Monthly ext4 report (Jan 2025) 0 (1) 2025/01/20 13:06
[syzbot] Monthly ext4 report (Dec 2024) 0 (1) 2024/12/19 18:40
[syzbot] [ext4?] kernel BUG in ext4_write_inline_data_end (2) 0 (4) 2024/11/08 10:27
[syzbot] Monthly ext4 report (Aug 2024) 0 (1) 2024/08/16 09:46
[syzbot] Monthly ext4 report (Jul 2024) 0 (1) 2024/07/15 14:03
[syzbot] Monthly ext4 report (Apr 2024) 0 (1) 2024/04/12 13:18
Re: [syzbot] [ext4?] kernel BUG in ext4_write_inline_data_end (2) 1 (1) 2024/02/06 15:44
Similar bugs (13)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG at fs/ext4/inline.c:LINE! ext4 C done done 76 802d 1625d 22/28 fixed on 2023/02/24 13:50
android-54 kernel BUG in ext4_write_inline_data_end C 4 986d 1119d 2/2 fixed on 2022/09/27 22:24
android-5-10 kernel BUG in ext4_write_inline_data_end C error 3 1053d 1120d 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 C 9 19d 550d 0/2 upstream: reported C repro on 2023/09/24 12:05
android-5-10 kernel BUG in ext4_write_inline_data_end (2) C error 15 29d 1004d 2/2 upstream: reported C repro on 2022/06/27 15:18
linux-6.1 kernel BUG in ext4_write_inline_data_end origin:upstream C error 43 129d 746d 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 C error done 2 97d 499d 0/2 upstream: reported C repro on 2023/11/14 10:56
android-5-15 kernel BUG in ext4_write_inline_data_end C error 11 844d 904d 2/2 fixed on 2023/02/02 00:40
linux-4.19 kernel BUG in ext4_write_inline_data_end ext4 C error 12 755d 1502d 0/1 upstream: reported C repro on 2021/02/14 13:39
linux-5.15 kernel BUG in ext4_write_inline_data_end origin:upstream C error 5 11d 667d 0/3 upstream: reported C repro on 2023/05/30 10:48
upstream kernel BUG in ext4_write_inline_data_end ext4 C error done 32 458d 756d 25/28 fixed on 2024/01/30 23:26
android-54 kernel BUG in ext4_write_inline_data_end (2) ext4 syz 9 27d 792d 0/2 upstream: reported syz repro on 2023/01/25 15:39
linux-4.14 kernel BUG in ext4_write_inline_data_end C error 4 842d 1428d 0/1 upstream: reported C repro on 2021/04/30 02:18
Last patch testing requests (12)
Created Duration User Patch Repo Result
2025/03/14 07:45 21m retest repro upstream report log
2025/03/14 07:14 22m retest repro upstream report log
2025/03/14 07:14 23m retest repro upstream report log
2025/03/14 06:11 14m retest repro upstream report log
2025/03/14 06:11 13m retest repro upstream report log
2025/03/14 06:11 38m retest repro upstream report log
2025/03/14 05:43 9m retest repro linux-next error
2025/02/28 05:13 19m retest repro upstream report log
2025/02/28 05:13 19m retest repro upstream report log
2025/02/28 05:13 19m retest repro upstream report log
2024/11/08 10:27 19m crashfixer001@gmail.com upstream report log
2024/11/08 09:16 20m crashfixer001@gmail.com upstream report log

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/ext4/inline.c:235!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 5838 Comm: syz-executor110 Not tainted 6.13.0-rc3-syzkaller-00209-g499551201b5f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:ext4_write_inline_data fs/ext4/inline.c:235 [inline]
RIP: 0010:ext4_write_inline_data_end+0xdc7/0xdd0 fs/ext4/inline.c:774
Code: 47 1d 8c e8 4b 3a 91 ff 90 0f 0b e8 63 7a 47 ff 48 8b 7c 24 10 48 c7 c6 e0 47 1d 8c e8 32 3a 91 ff 90 0f 0b e8 4a 7a 47 ff 90 <0f> 0b 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900031c7320 EFLAGS: 00010293
RAX: ffffffff8257f9a6 RBX: 000000000000005a RCX: ffff888012968000
RDX: 0000000000000000 RSI: 000000000000005a RDI: 000000000000005b
RBP: ffffc900031c7448 R08: ffffffff8257ef87 R09: 1ffff11006806070
R10: dffffc0000000000 R11: ffffed1006806071 R12: 000000000000005a
R13: dffffc0000000000 R14: ffff888076b65bd8 R15: 000000000000005b
FS:  00007f5c6bacf6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000a00 CR3: 0000000073fb6000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 generic_perform_write+0x6f8/0x990 mm/filemap.c:4070
 ext4_buffered_write_iter+0xc5/0x350 fs/ext4/file.c:299
 ext4_file_write_iter+0x892/0x1c50
 iter_file_splice_write+0xbfc/0x1510 fs/splice.c:743
 do_splice_from fs/splice.c:941 [inline]
 direct_splice_actor+0x11d/0x220 fs/splice.c:1164
 splice_direct_to_actor+0x588/0xc80 fs/splice.c:1108
 do_splice_direct_actor fs/splice.c:1207 [inline]
 do_splice_direct+0x289/0x3e0 fs/splice.c:1233
 do_sendfile+0x564/0x8a0 fs/read_write.c:1363
 __do_sys_sendfile64 fs/read_write.c:1424 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1410
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5c6bb18d09
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5c6bacf218 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f5c6bba0708 RCX: 00007f5c6bb18d09
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f5c6bba0700 R08: 0000000000000000 R09: 0000000000000000
R10: 000080001d00c0d0 R11: 0000000000000246 R12: 00007f5c6bb6d620
R13: 00007f5c6bb6d0c0 R14: 0031656c69662f2e R15: 8088e3ad122bc192
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_write_inline_data fs/ext4/inline.c:235 [inline]
RIP: 0010:ext4_write_inline_data_end+0xdc7/0xdd0 fs/ext4/inline.c:774
Code: 47 1d 8c e8 4b 3a 91 ff 90 0f 0b e8 63 7a 47 ff 48 8b 7c 24 10 48 c7 c6 e0 47 1d 8c e8 32 3a 91 ff 90 0f 0b e8 4a 7a 47 ff 90 <0f> 0b 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900031c7320 EFLAGS: 00010293

RAX: ffffffff8257f9a6 RBX: 000000000000005a RCX: ffff888012968000
RDX: 0000000000000000 RSI: 000000000000005a RDI: 000000000000005b
RBP: ffffc900031c7448 R08: ffffffff8257ef87 R09: 1ffff11006806070
R10: dffffc0000000000 R11: ffffed1006806071 R12: 000000000000005a
R13: dffffc0000000000 R14: ffff888076b65bd8 R15: 000000000000005b
FS:  00007f5c6bacf6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5c6bb6c818 CR3: 0000000073fb6000 CR4: 0000000000350ef0

Crashes (173):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/21 12:51 upstream 499551201b5f d7f584ee .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel BUG in ext4_write_inline_data_end
2024/02/15 19:18 upstream 8d3dea210042 d9b1cdd5 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel BUG in ext4_write_inline_data_end
2024/02/13 03:29 upstream 716f4aaa7b48 77b23aa1 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root kernel BUG in ext4_write_inline_data_end
2024/02/06 22:48 upstream 99bd3cb0d12e 6404acf9 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in ext4_write_inline_data_end
2025/02/02 17:27 upstream 69e858e0b8b2 568559e4 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/10/29 06:30 upstream e42b1a9a2557 66aeb999 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/09/04 23:33 upstream c7fb1692dc01 dfbe2ed4 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/03/09 23:18 upstream 09e5c48fea17 6ee49f2e .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-qemu-upstream kernel BUG in ext4_write_inline_data_end
2024/11/12 17:28 linux-next 929beafbe7ac 75bb1b32 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root kernel BUG in ext4_write_inline_data_end
2024/04/30 07:16 upstream b947cc5bf6d7 f10afd69 .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in ext4_write_inline_data_end
2024/04/24 15:29 upstream 9d1ddab261f3 21339d7b .config strace log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in ext4_write_inline_data_end
2025/01/02 17:39 upstream 56e6a3499e14 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in ext4_write_inline_data_end
2024/11/15 10:11 upstream cfaaa7d010d1 f6ede3a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in ext4_write_inline_data_end
2024/07/06 18:09 upstream 1dd28064d416 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_write_inline_data_end
2024/05/02 13:23 upstream 0106679839f7 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in ext4_write_inline_data_end
2024/02/02 01:47 upstream 6764c317b6bb 81024119 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in ext4_write_inline_data_end
2025/02/14 05:05 upstream ab68d7eb7b1a d9a046cf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/02/14 02:39 upstream ab68d7eb7b1a d9a046cf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/02/12 20:45 upstream 09fbf3d50205 b27c2402 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/02/12 03:39 upstream 09fbf3d50205 f2baddf5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/02/06 13:49 upstream 92514ef226f5 1e1faf27 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/02/05 01:20 upstream d009de7d5428 44c01590 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/02/03 05:07 upstream 69e858e0b8b2 568559e4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/30 19:26 upstream 72deda0abee6 e961d16c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/26 01:23 upstream 405057718a1f 9fbd772e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/25 01:17 upstream bc8198dc7ebc 1293872d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/24 04:24 upstream e0b1f5914274 521b0ce3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/21 12:51 upstream 3d3a9c8b89d4 6e87cfa2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/20 16:12 upstream ffd294d346d1 6e87cfa2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/20 00:30 upstream 9528d418de4d f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/19 11:39 upstream fda5e3f28400 f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/18 19:07 upstream 595523945be0 f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/18 11:58 upstream ad26fc09dabf f2cb035c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/16 20:12 upstream ce69b4019001 f9e07a6e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/16 03:16 upstream 619f0b6fad52 968edaf4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/15 15:38 upstream 619f0b6fad52 968edaf4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/11 08:46 upstream 77a903cd8e5a 6dbc6a9b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/08 03:29 upstream 09a0fa92e5b4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/07 21:39 upstream fbfd64d25c7a f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/07 13:03 upstream fbfd64d25c7a f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/02 09:53 upstream 56e6a3499e14 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/31 20:24 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/31 06:59 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/31 06:13 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/29 14:00 upstream 059dd502b263 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/28 16:55 upstream fd0584d220fe d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/27 05:32 upstream d6ef8b40d075 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/26 13:21 upstream 9b2ffa6148b1 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/25 22:15 upstream 9b2ffa6148b1 444551c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/22 00:56 upstream 499551201b5f d7f584ee .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/19 23:50 upstream baaa2567a712 c87fa8a3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/19 08:25 upstream eabcdba3ad40 1432fc84 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/17 04:20 upstream f44d154d6e3d f93b2b55 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/17 01:33 upstream f44d154d6e3d f93b2b55 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/16 15:49 upstream 78d4f34e2115 eec85da6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/15 12:26 upstream 2d8308bf5b67 7cbfbb3a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2024/12/15 01:40 upstream a446e965a188 7cbfbb3a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data_end
2025/01/06 22:19 linux-next 8155b4ef3466 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in ext4_write_inline_data_end
2025/01/05 05:00 linux-next 8155b4ef3466 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in ext4_write_inline_data_end
2025/01/03 02:59 linux-next 8155b4ef3466 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in ext4_write_inline_data_end
2024/12/30 17:09 linux-next 8155b4ef3466 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in ext4_write_inline_data_end
2024/04/20 00:19 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 6a71d2909427 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ext4_write_inline_data_end
* Struck through repros no longer work on HEAD.