syzbot

 sign-in | mailing list | source | docs
🐞 Open [79] 🐞 Fixed [21] 🐞 Invalid [282] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes 💬 Send us feedback

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: 1562d, last: 20h43m
▶ ▼ 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 414d 1288d 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 1211d 1336d 19/26 fixed on 2021/03/10 01:48
android-49 kernel BUG at fs/ext4/inode.c:LINE! C 280 1910d 1840d 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 422d 1216d 0/1 upstream: reported C repro on 2020/12/25 03:51
android-414 kernel BUG at fs/ext4/inode.c:LINE! 1 1986d 1837d 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 735d 904d 2/2 fixed on 2022/04/21 04:24
android-5-10 kernel BUG in ext4_writepages C error 5 554d 715d 2/2 fixed on 2022/11/16 18:44
android-44 kernel BUG at fs/ext4/inode.c:LINE! C 110 1927d 1840d 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 498d 1059d 0/26 auto-obsoleted due to no activity on 2024/03/07 20:46
linux-5.15 kernel BUG in ext4_writepages origin:upstream C error 37 1d17h 408d 0/3 upstream: reported C repro on 2023/03/13 06:22
linux-6.1 kernel BUG in ext4_writepages origin:upstream C 53 1d05h 408d 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 77 7d03h 554d 0/2 upstream: reported C repro on 2022/10/18 14:12
android-6-1 kernel BUG in ext4_writepages origin:upstream C error 34 1d12h 324d 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 117 2h14m 514d 0/2 upstream: reported C repro on 2022/11/27 00:51
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2024/04/10 22:04 2h38m retest repro android12-5.4 report log
2024/04/10 22:04 2h36m retest repro android12-5.4 report log
2024/04/10 22:04 11m retest repro android12-5.4 report log
2024/04/10 22:04 1h12m retest repro android12-5.4 report log
2024/03/27 21:28 6m retest repro android12-5.4 report log
2024/03/27 21:28 13m retest repro android12-5.4 report log
2024/03/13 19:08 14m retest repro android12-5.4 report log
2024/03/13 19:08 8m retest repro android12-5.4 report log
2024/03/13 19:08 5m retest repro android12-5.4 report log
2024/03/13 19:08 11m 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: 0 PID: 9 Comm: kworker/u4:1 Not tainted 5.4.268-syzkaller-00003-g2d5d8240a7cb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: writeback wb_workfn (flush-7:1)
RIP: 0010:ext4_writepages+0x3c96/0x3cc0 fs/ext4/inode.c:2843
Code: d1 9b ff 31 ff 89 de e8 78 d1 9b ff 45 84 f6 75 2e e8 5e cf 9b ff 49 bf 00 00 00 00 00 fc ff df e9 1d f9 ff ff e8 4a cf 9b ff <0f> 0b e8 43 cf 9b ff 0f 0b e8 3c cf 9b ff e8 57 dc 37 ff eb 99 e8
RSP: 0018:ffff8881f5dd70e0 EFLAGS: 00010293
RAX: ffffffff81c877d6 RBX: 0000010000000000 RCX: ffff8881f5dcee40
RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000
RBP: ffff8881f5dd74d0 R08: ffffffff81c84426 R09: ffffed103b8c3f22
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881dc61f9b8
R13: 0000000000000001 R14: 0000018410000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020005538 CR3: 00000001e335f000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_writepages+0x12b/0x270 mm/page-writeback.c:2344
 __writeback_single_inode+0xd9/0xcc0 fs/fs-writeback.c:1467
 writeback_sb_inodes+0x9e0/0x1800 fs/fs-writeback.c:1730
 wb_writeback+0x403/0xd70 fs/fs-writeback.c:1905
 wb_do_writeback fs/fs-writeback.c:2050 [inline]
 wb_workfn+0x3b6/0x1230 fs/fs-writeback.c:2091
 process_one_work+0x765/0xd20 kernel/workqueue.c:2290
 worker_thread+0xaef/0x1470 kernel/workqueue.c:2436
 kthread+0x2da/0x360 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354
Modules linked in:
---[ end trace 0ce88baa33188ec6 ]---
RIP: 0010:ext4_writepages+0x3c96/0x3cc0 fs/ext4/inode.c:2843
Code: d1 9b ff 31 ff 89 de e8 78 d1 9b ff 45 84 f6 75 2e e8 5e cf 9b ff 49 bf 00 00 00 00 00 fc ff df e9 1d f9 ff ff e8 4a cf 9b ff <0f> 0b e8 43 cf 9b ff 0f 0b e8 3c cf 9b ff e8 57 dc 37 ff eb 99 e8
RSP: 0018:ffff8881f5dd70e0 EFLAGS: 00010293
RAX: ffffffff81c877d6 RBX: 0000010000000000 RCX: ffff8881f5dcee40
RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000
RBP: ffff8881f5dd74d0 R08: ffffffff81c84426 R09: ffffed103b8c3f22
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881dc61f9b8
R13: 0000000000000001 R14: 0000018410000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2:

Crashes (159):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/22 22:38 android12-5.4 2d5d8240a7cb 36c961ad .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/04/21 00:43 android12-5.4 2d5d8240a7cb af24b050 .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 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
2024/04/23 20:16 android12-5.4 2d5d8240a7cb 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/04/13 20:42 android12-5.4 d0d34dcb02cc c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/02/28 18:52 android12-5.4 50cb39f34248 55d6f11d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
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.