syzbot


kernel BUG at fs/ext4/inode.c:LINE!

Status: upstream: reported C repro on 2020/01/14 12:13
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+f4b1559572b9dba7bfbc@syzkaller.appspotmail.com
First crash: 1506d, last: 23h21m
Similar bugs (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 kernel BUG at fs/ext4/inode.c:LINE! ext4 C error 145 358d 1232d 0/1 upstream: reported C repro on 2020/10/14 01:19
upstream kernel BUG at fs/ext4/inode.c:LINE! ext4 C done 9 1155d 1280d 19/26 fixed on 2021/03/10 01:48
android-49 kernel BUG at fs/ext4/inode.c:LINE! C 280 1854d 1784d 0/3 public: reported C repro on 2019/04/11 08:44
linux-4.14 kernel BUG at fs/ext4/inode.c:LINE! ext4 C 11 366d 1160d 0/1 upstream: reported C repro on 2020/12/25 03:51
android-414 kernel BUG at fs/ext4/inode.c:LINE! 1 1930d 1781d 0/1 auto-closed as invalid on 2019/05/15 13:37
android-5-10 kernel BUG in mpage_prepare_extent_to_map C error 254 679d 848d 2/2 fixed on 2022/04/21 04:24
android-5-10 kernel BUG in ext4_writepages C error 5 497d 659d 2/2 fixed on 2022/11/16 18:44
android-44 kernel BUG at fs/ext4/inode.c:LINE! C 110 1871d 1784d 0/2 public: reported C repro on 2019/04/11 08:44
upstream kernel BUG in mpage_prepare_extent_to_map ext4 C done error 145 442d 1003d 0/26 upstream: reported C repro on 2021/05/31 07:15
linux-5.15 kernel BUG in ext4_writepages origin:upstream C error 23 1d02h 352d 0/3 upstream: reported C repro on 2023/03/13 06:22
linux-6.1 kernel BUG in ext4_writepages origin:upstream C 35 1d04h 352d 0/3 upstream: reported C repro on 2023/03/12 17:26
android-5-15 kernel BUG in ext4_writepages ext4 origin:upstream C error 72 13d 498d 0/2 upstream: reported C repro on 2022/10/18 14:12
android-6-1 kernel BUG in ext4_writepages origin:upstream C error 25 3d10h 268d 0/2 upstream: reported C repro on 2023/06/05 07:33
android-5-10 kernel BUG in ext4_writepages (2) ext4 C error inconclusive 103 14d 458d 0/2 upstream: reported C repro on 2022/11/27 00:51
Last patch testing requests (10)
Created Duration User Patch Repo Result
2024/02/13 14:16 10m retest repro android12-5.4 report log
2024/02/13 14:16 13m retest repro android12-5.4 report log
2024/02/13 14:16 6m retest repro android12-5.4 report log
2024/02/13 14:16 7m retest repro android12-5.4 report log
2024/02/13 14:16 9m retest repro android12-5.4 report log
2024/01/30 13:18 14m retest repro android12-5.4 report log
2024/01/30 13:18 7m retest repro android12-5.4 report log
2024/01/30 13:18 8m retest repro android12-5.4 report log
2024/01/30 13:18 12m retest repro android12-5.4 report log
2024/01/16 12:51 5m retest repro android12-5.4 report log

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2844!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 356 Comm: syz-executor353 Not tainted 5.4.265-syzkaller-00001-g1b3143b9b166 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:ext4_writepages+0x3c96/0x3cc0 fs/ext4/inode.c:2843
Code: d2 9b ff 31 ff 89 de e8 e8 d2 9b ff 45 84 f6 75 2e e8 ce d0 9b ff 49 bf 00 00 00 00 00 fc ff df e9 1d f9 ff ff e8 ba d0 9b ff <0f> 0b e8 b3 d0 9b ff 0f 0b e8 ac d0 9b ff e8 27 de 37 ff eb 99 e8
RSP: 0018:ffff8881db8a73e0 EFLAGS: 00010293
RAX: ffffffff81c87606 RBX: 0000010000000000 RCX: ffff8881dbf0bf00
RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000
RBP: ffff8881db8a77d0 R08: ffffffff81c84256 R09: ffffed103cf2729f
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881e79395a0
R13: 0000000000000001 R14: 0000010410000000 R15: dffffc0000000000
FS:  0000555556d65380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e066495000 CR3: 00000001dbcf7000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_writepages+0x12b/0x270 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x33c/0x3f0 mm/filemap.c:421
 file_write_and_wait_range+0x83/0x110 mm/filemap.c:782
 __generic_file_fsync+0x6e/0x190 fs/libfs.c:1022
 ext4_sync_file+0x251/0xcc0 fs/ext4/fsync.c:118
 generic_write_sync include/linux/fs.h:2967 [inline]
 ext4_file_write_iter+0xa03/0x10e0 fs/ext4/file.c:281
 call_write_iter include/linux/fs.h:1983 [inline]
 new_sync_write fs/read_write.c:483 [inline]
 __vfs_write+0x5d3/0x750 fs/read_write.c:496
 vfs_write+0x206/0x4e0 fs/read_write.c:558
 ksys_write+0x199/0x2c0 fs/read_write.c:611
 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
Modules linked in:
---[ end trace cb42aedb9f0d253a ]---
RIP: 0010:ext4_writepages+0x3c96/0x3cc0 fs/ext4/inode.c:2843
Code: d2 9b ff 31 ff 89 de e8 e8 d2 9b ff 45 84 f6 75 2e e8 ce d0 9b ff 49 bf 00 00 00 00 00 fc ff df e9 1d f9 ff ff e8 ba d0 9b ff <0f> 0b e8 b3 d0 9b ff 0f 0b e8 ac d0 9b ff e8 27 de 37 ff eb 99 e8
RSP: 0018:ffff8881db8a73e0 EFLAGS: 00010293
RAX: ffffffff81c87606 RBX: 0000010000000000 RCX: ffff8881dbf0bf00
RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000
RBP: ffff8881db8a77d0 R08: ffffffff81c84256 R09: ffffed103cf2729f
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881e79395a0
R13: 0000000000000001 R14: 0000010410000000 R15: dffffc0000000000
FS:  0000555556d65380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e066495000 CR3: 00000001dbcf7000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (153):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/02/25 10:05 android12-5.4 1b3143b9b166 8d446f15 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/02/25 01:53 android12-5.4 1b3143b9b166 8d446f15 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/08/08 09:50 android12-5.4 fed9191809bc b1b6ae3d .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/07/31 23:02 android12-5.4 ba2c000ce64e 2a0d0f29 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/03/13 06:24 android12-5.4 250ac66f1853 5205ef30 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/03/12 18:23 android12-5.4 250ac66f1853 5205ef30 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/03/12 07:21 android12-5.4 250ac66f1853 5205ef30 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/02/26 15:45 android12-5.4 66c3e3ab77a2 ee50e71c .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/02/10 11:27 android12-5.4 6a5ec6cea0cd 07980f9d .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/11/28 16:55 android12-5.4 c80a5b2e7f63 247de55b .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/11/27 03:58 android12-5.4 c80a5b2e7f63 f4470a7b .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/11/27 00:49 android12-5.4 c80a5b2e7f63 f4470a7b .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/11/26 10:06 android12-5.4 c80a5b2e7f63 f4470a7b .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/10/18 14:24 android12-5.4 ff63a5f5cdf6 b31320fc .config strace log report syz C [disk image] [vmlinux] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2020/12/21 17:25 android12-5.4 4aa7a7c97391 04201c06 .config console log report syz C ci2-android-5-4-kasan
2023/02/28 19:35 android12-5.4 250ac66f1853 95aee97a .config strace log report syz [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/08/17 12:17 android12-5.4 2bf0b614f0fb 4e72d229 .config strace log report syz C ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/05/09 17:54 android12-5.4 0e9e1752f526 8b277b8e .config strace log report syz C ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/03/21 02:54 android12-5.4 49216514f3a3 e2d91b1d .config console log report syz C ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/02/03 05:07 android12-5.4 ac3eac18e72e 4ebb2798 .config console log report syz C ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2021/12/11 23:45 android12-5.4 4fd09f7a7972 49ca1f59 .config console log report syz C ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2024/02/27 14:55 android12-5.4 1b3143b9b166 05e69c83 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/02/26 13:50 android12-5.4 1b3143b9b166 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/02/25 01:35 android12-5.4 1b3143b9b166 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/08/06 16:13 android12-5.4 fed9191809bc 4ffcc9ef .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/08/04 00:23 android12-5.4 fed9191809bc 74621247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/07/31 22:34 android12-5.4 ba2c000ce64e 2a0d0f29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/03/14 12:06 android12-5.4 250ac66f1853 0d5c4377 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/03/10 15:52 android12-5.4 250ac66f1853 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/02/04 21:41 android12-5.4 6a5ec6cea0cd be607b78 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/01/31 03:50 android12-5.4 ac6c87b5296b b68fb8d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/01/29 17:17 android12-5.4 ac6c87b5296b 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/01/24 06:49 android12-5.4 99372dbabe88 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/01/23 21:09 android12-5.4 57b9129d0863 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/01/17 09:10 android12-5.4 a0eae55f26a0 a63719e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/01/16 16:36 android12-5.4 a0eae55f26a0 a63719e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2023/01/02 10:07 android12-5.4 a8aad8851131 ab32d508 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/12/18 20:09 android12-5.4 a76dfbc99260 05494336 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/12/13 13:30 android12-5.4 d7e5d5321233 67be1ae7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/12/13 07:27 android12-5.4 d7e5d5321233 67be1ae7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/12/11 23:02 android12-5.4 d7e5d5321233 67be1ae7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/12/10 13:41 android12-5.4 d7e5d5321233 67be1ae7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/12/09 18:21 android12-5.4 d7e5d5321233 67be1ae7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/12/08 20:49 android12-5.4 d7e5d5321233 1034e5fa .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/11/27 19:27 android12-5.4 c80a5b2e7f63 f4470a7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/10/26 06:36 android12-5.4 035e4939365c 2159e4d2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/08/27 08:33 android12-5.4 f0306959ab7c 07177916 .config console log report info [disk image] [vmlinux] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/04/28 18:04 android12-5.4 a6d97349a046 e9076525 .config console log report info ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/04/17 13:09 android12-5.4 b730087e9a5d 8bcc32a6 .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/04/04 12:44 android12-5.4 61c005f0f166 79a2a8fc .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/04/04 07:45 android12-5.4 61c005f0f166 79a2a8fc .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/02/26 12:20 android12-5.4 961dd91cc692 45a13a73 .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/02/21 21:54 android12-5.4 29002d26b47f 6e821dbf .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/02/17 07:33 android12-5.4 2426795494c7 2bea8a27 .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/02/16 16:23 android12-5.4 2426795494c7 8b9ca619 .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/02/15 08:12 android12-5.4 84a24b5e2a0f 8b9ca619 .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/02/07 18:51 android12-5.4 2159354389cf a7dab638 .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/02/04 23:16 android12-5.4 287dec2d1089 e13a05ed .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/01/31 09:18 android12-5.4 57f9b292a6a3 a491ad2d .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/01/28 22:39 android12-5.4 57f9b292a6a3 495e00c5 .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/01/28 05:19 android12-5.4 0cc2d3cf840d 495e00c5 .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/01/19 07:01 android12-5.4 37c7c8d4f085 731a2d23 .config console log report info ci2-android-5-4-kasan kernel BUG in ext4_writepages
2022/01/17 11:01 android12-5.4 37c7c8d4f085 731a2d23 .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2022/01/16 02:17 android12-5.4 5b673be0c6b0 723cfaf0 .config console log report info ci2-android-5-4-kasan kernel BUG in mpage_prepare_extent_to_map
2021/11/02 17:11 android12-5.4 2138e7367558 17f3edd2 .config console log report info ci2-android-5-4-kasan kernel BUG in ext4_writepage
2020/12/21 17:02 android12-5.4 4aa7a7c97391 04201c06 .config console log report info ci2-android-5-4-kasan
2020/01/14 12:13 https://android.googlesource.com/kernel/common android-5.4 d32a4878e299 32881205 .config console log report ci2-android-5-4-kasan
* Struck through repros no longer work on HEAD.