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kernel BUG in ext4_write_inline_data (2)

Status: upstream: reported C repro on 2024/11/21 09:00
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+fe2a25dae02a207717a0@syzkaller.appspotmail.com
First crash: 180d, last: 8d18h
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
[PATCH] ext4: inline: fix len overflow in ext4_prepare_inline_data 3 (3) 2025/04/15 17:32
Re: [syzbot] [ext4?] kernel BUG in ext4_write_inline_data (2) 2 (4) 2024/11/22 20:09
[syzbot] [ext4?] kernel BUG in ext4_write_inline_data (2) 0 (4) 2024/11/22 16:43
▶ ▼ Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 kernel BUG in ext4_write_inline_data ext4 C 4 828d 924d 0/1 upstream: reported C repro on 2022/11/04 18:44
upstream kernel BUG at fs/ext4/inline.c:LINE! ext4 C done done 76 852d 1675d 22/28 fixed on 2023/02/24 13:50
upstream kernel BUG in ext4_write_inline_data ext4 C error 36 306d 792d 27/28 fixed on 2024/08/22 01:52
linux-6.1 kernel BUG in ext4_write_inline_data origin:upstream C 6 13d 67d 0/3 upstream: reported C repro on 2025/03/10 13:01
android-6-1 kernel BUG in ext4_write_inline_data origin:lts C error 23 8d20h 684d 0/2 upstream: reported C repro on 2023/07/02 21:30
linux-4.19 kernel BUG in ext4_write_inline_data_end ext4 C error 12 805d 1552d 0/1 upstream: reported C repro on 2021/02/14 13:39
android-5-10 kernel BUG in ext4_write_inline_data ext4 C error inconclusive 3 824d 922d 2/2 fixed on 2023/05/04 14:51
android-54 kernel BUG in ext4_write_inline_data C 3 885d 922d 2/2 fixed on 2023/04/05 17:17
▶ ▼ Last patch testing requests (7)
Created Duration User Patch Repo Result
2024/12/01 15:03 16m retest repro upstream report log
2024/12/01 15:03 16m retest repro upstream report log
2024/11/22 19:21 27m bretznic@gmail.com patch upstream OK log
2024/11/22 18:33 11m bretznic@gmail.com patch upstream error
2024/11/22 16:43 7m bretznic@gmail.com patch upstream error
2024/11/22 15:57 1m bretznic@gmail.com patch upstream error
2024/11/21 12:43 25m dmantipov@yandex.ru patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 43fb83c17ba2d63dfb798f0be7453ed55ca3f9c2 OK log
▶ ▼ Fix bisection attempts (2)
Created Duration User Patch Repo Result
2025/02/02 17:35 2h53m bisect fix upstream OK (0) job log log
2025/01/02 12:20 1h19m bisect fix upstream OK (0) job log log

Sample crash report:
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
------------[ 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-executor116 Not tainted 6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:ext4_write_inline_data+0x36b/0x460 fs/ext4/inline.c:235
Code: df 41 ff e8 f7 df 41 ff 45 8d 64 2c c4 b8 3c 00 00 00 29 e8 4c 63 f0 e9 c7 fe ff ff e8 de df 41 ff 90 0f 0b e8 d6 df 41 ff 90 <0f> 0b e8 8e b8 a2 ff e9 d6 fd ff ff 4c 89 ff e8 81 b8 a2 ff e9 71
RSP: 0018:ffffc90003e078e0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888074c38c98 RCX: ffffffff824b9874
RDX: ffff8880349bbc00 RSI: ffffffff824b9a7a RDI: 0000000000000006
RBP: 0000010000000005 R08: 0000000000000006 R09: 0000010000000006
R10: 000000000000003c R11: 0000000000000000 R12: 0000000000000001
R13: ffffc90003e07980 R14: 0000010000000006 R15: ffff888074c39242
FS:  00005555714a8380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000066c7e0 CR3: 0000000077348000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_write_inline_data_end+0x278/0xc50 fs/ext4/inline.c:774
 ext4_da_write_end+0x54e/0xd00 fs/ext4/inode.c:3065
 generic_perform_write+0x4e8/0x920 mm/filemap.c:4069
 ext4_buffered_write_iter+0x119/0x3c0 fs/ext4/file.c:299
 ext4_file_write_iter+0x861/0x19d0 fs/ext4/file.c:698
 new_sync_write fs/read_write.c:590 [inline]
 vfs_write+0x5b1/0x1150 fs/read_write.c:683
 ksys_pwrite64 fs/read_write.c:798 [inline]
 __do_sys_pwrite64 fs/read_write.c:808 [inline]
 __se_sys_pwrite64 fs/read_write.c:805 [inline]
 __x64_sys_pwrite64+0x200/0x260 fs/read_write.c:805
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f18e1c07679
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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:00007fff5a649ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fff5a64a078 RCX: 00007f18e1c07679
RDX: 0000000000000001 RSI: 0000000020000300 RDI: 0000000000000004
RBP: 00007f18e1c7b610 R08: 0000000000000000 R09: 00007fff5a64a078
R10: 0000010000000005 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff5a64a068 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_write_inline_data+0x36b/0x460 fs/ext4/inline.c:235
Code: df 41 ff e8 f7 df 41 ff 45 8d 64 2c c4 b8 3c 00 00 00 29 e8 4c 63 f0 e9 c7 fe ff ff e8 de df 41 ff 90 0f 0b e8 d6 df 41 ff 90 <0f> 0b e8 8e b8 a2 ff e9 d6 fd ff ff 4c 89 ff e8 81 b8 a2 ff e9 71
RSP: 0018:ffffc90003e078e0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888074c38c98 RCX: ffffffff824b9874
RDX: ffff8880349bbc00 RSI: ffffffff824b9a7a RDI: 0000000000000006
RBP: 0000010000000005 R08: 0000000000000006 R09: 0000010000000006
R10: 000000000000003c R11: 0000000000000000 R12: 0000000000000001
R13: ffffc90003e07980 R14: 0000010000000006 R15: ffff888074c39242
FS:  00005555714a8380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5524d17095 CR3: 0000000077348000 CR4: 0000000000350ef0

Crashes (38):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/11/17 14:58 upstream 4a5df3796467 cfe3a04a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-badwrites-root kernel BUG in ext4_write_inline_data
2024/11/17 14:04 upstream 4a5df3796467 cfe3a04a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-badwrites-root kernel BUG in ext4_write_inline_data
2025/02/25 15:54 linux-next e5d3fd687aac d34966d1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-linux-next-kasan-gce-root kernel BUG in ext4_write_inline_data
2024/11/17 08:54 upstream 4a5df3796467 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in ext4_write_inline_data
2024/11/17 08:54 upstream 4a5df3796467 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in ext4_write_inline_data
2025/05/08 11:49 upstream d76bb1ebb558 dbf35fa1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/05/06 10:20 upstream 01f95500a162 ae98e6b9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/05/06 04:23 upstream 01f95500a162 ae98e6b9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/05/02 19:34 upstream ebd297a2affa d7f099d1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/05/01 20:50 upstream 4f79eaa2ceac 51b137cd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/04/21 19:04 upstream 9d7a0577c9db 2a20f901 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/04/21 08:25 upstream 9d7a0577c9db 2a20f901 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/04/19 12:34 upstream 3088d26962e8 2a20f901 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/04/18 02:58 upstream b5c6891b2c5b 2a20f901 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/04/16 06:23 upstream 1a1d569a75f3 a95239b1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/04/08 01:23 upstream 0af2f6be1b42 a2ada0e7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/04/06 04:00 upstream 56f944529ec2 1c65791e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/04/03 02:11 upstream acc4d5ff0b61 b0cc4801 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/04/01 08:19 upstream 609706855d90 36d76a97 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/30 16:15 upstream 93d52288679e d3999433 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/29 06:45 upstream 0c86b42439b6 cf25e2c2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/27 19:23 upstream 1a9239bb4253 928390c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/26 20:13 upstream 1e26c5e28ca5 19e40f48 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/26 09:01 upstream 2df0c02dab82 89d30d73 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/25 16:13 upstream 2f2d52945852 875573af .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/24 19:33 upstream 38fec10eb60d 875573af .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/21 21:13 upstream d07de43e3f05 c6512ef7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/20 09:25 upstream a7f2e10ecd8f 62330552 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/18 22:00 upstream 76b6905c11fd 22a6c2b1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/13 23:03 upstream 4003c9e78778 e2826670 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/10 06:30 upstream 80e54e84911a 163f510d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/10 02:35 upstream 1110ce6a1e34 163f510d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/09 22:10 upstream 1110ce6a1e34 163f510d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/03/09 06:35 upstream b7c90e3e717a 163f510d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/02/27 04:18 upstream 5394eea10651 6a8fcbc4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/02/18 12:06 upstream 2408a807bfc3 c37c7249 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/02/16 08:52 upstream ad1b832bf1cf 40a34ec9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ext4_write_inline_data
2025/02/25 15:08 linux-next e5d3fd687aac d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in ext4_write_inline_data
* Struck through repros no longer work on HEAD.