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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: 1875d, last: 5h40m
▶ ▼ 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 728d 1602d 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 1524d 1650d 19/28 fixed on 2021/03/10 01:48
android-49 kernel BUG at fs/ext4/inode.c:LINE! C 280 2224d 2153d 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 735d 1530d 0/1 upstream: reported C repro on 2020/12/25 03:51
android-414 kernel BUG at fs/ext4/inode.c:LINE! 1 2299d 2151d 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 1049d 1217d 2/2 fixed on 2022/04/21 04:24
android-5-10 kernel BUG in ext4_writepages C error 5 867d 1029d 2/2 fixed on 2022/11/16 18:44
android-44 kernel BUG at fs/ext4/inode.c:LINE! C 110 2241d 2153d 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 811d 1372d 0/28 auto-obsoleted due to no activity on 2024/03/07 20:46
linux-5.15 kernel BUG in ext4_writepages origin:upstream C error 79 3d15h 721d 0/3 upstream: reported C repro on 2023/03/13 06:22
linux-6.1 kernel BUG in ext4_writepages origin:upstream C 108 2d07h 722d 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 446 21h52m 867d 0/2 upstream: reported C repro on 2022/10/18 14:12
android-6-1 kernel BUG in ext4_writepages origin:upstream C error 222 7d11h 637d 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 202 8d11h 828d 0/2 upstream: reported C repro on 2022/11/27 00:51
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/01/30 15:56 1h02m retest repro android12-5.4 report log
2025/01/16 15:53 11m retest repro android12-5.4 error
2025/01/16 15:53 4m retest repro android12-5.4 error
2025/01/16 15:53 2m retest repro android12-5.4 error
2025/01/16 15:53 2m retest repro android12-5.4 error
2025/01/02 12:00 11m retest repro android12-5.4 error
2024/12/25 05:30 10m retest repro android12-5.4 error
2024/12/25 05:30 8m retest repro android12-5.4 error
2024/12/25 05:30 2m retest repro android12-5.4 error
2024/12/25 05:30 2m retest repro android12-5.4 error

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2844!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 9 Comm: kworker/u4:1 Not tainted 5.4.289-syzkaller-00028-g3f2c17e79750 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: writeback wb_workfn (flush-7:2)
RIP: 0010:ext4_writepages+0x3c96/0x3cc0 fs/ext4/inode.c:2843
Code: 9c 9b ff 31 ff 89 de e8 08 9c 9b ff 45 84 f6 75 2e e8 ee 99 9b ff 49 bf 00 00 00 00 00 fc ff df e9 1d f9 ff ff e8 da 99 9b ff <0f> 0b e8 d3 99 9b ff 0f 0b e8 cc 99 9b ff e8 97 a3 37 ff eb 99 e8
RSP: 0018:ffff8881f5dcf0e0 EFLAGS: 00010293
RAX: ffffffff81c8b096 RBX: 0000010000000000 RCX: ffff8881f5dc4ec0
RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000
RBP: ffff8881f5dcf4d0 R08: ffffffff81c87ce6 R09: ffffed103b192722
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881d8c939b8
R13: 0000000000000001 R14: 0000018410000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555893a9738 CR3: 00000001e9ebc000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_writepages+0x12b/0x270 mm/page-writeback.c:2366
 __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 045183232d727563 ]---
RIP: 0010:ext4_writepages+0x3c96/0x3cc0 fs/ext4/inode.c:2843
Code: 9c 9b ff 31 ff 89 de e8 08 9c 9b ff 45 84 f6 75 2e e8 ee 99 9b ff 49 bf 00 00 00 00 00 fc ff df e9 1d f9 ff ff e8 da 99 9b ff <0f> 0b e8 d3 99 9b ff 0f 0b e8 cc 99 9b ff e8 97 a3 37 ff eb 99 e8
RSP: 0018:ffff8881f5dcf0e0 EFLAGS: 00010293
RAX: ffffffff81c8b096 RBX: 0000010000000000 RCX: ffff8881f5dc4ec0
RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000
RBP: ffff8881f5dcf4d0 R08: ffffffff81c87ce6 R09: ffffed103b192722
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881d8c939b8
R13: 0000000000000001 R14: 0000018410000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faaef7e0000 CR3: 00000001e45c0000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (189):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/03 04:39 android12-5.4 3f2c17e79750 568559e4 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/04/25 13:31 android12-5.4 2d5d8240a7cb 8bdc0f22 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/04/22 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
2024/05/15 02:15 android12-5.4 51cf29fc2bfc fdb4c10c .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-4-kasan kernel BUG in ext4_writepages
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
2025/03/03 22:23 android12-5.4 6b07fcd94a6a c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/03/03 09:18 android12-5.4 6b07fcd94a6a c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/03/02 09:18 android12-5.4 6b07fcd94a6a c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/02/28 22:44 android12-5.4 6b07fcd94a6a 67cf5345 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/02/24 21:09 android12-5.4 6b07fcd94a6a d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/02/22 21:32 android12-5.4 6b07fcd94a6a d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/02/21 11:50 android12-5.4 39762b7a60e9 0808a665 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/02/17 07:16 android12-5.4 39762b7a60e9 40a34ec9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/02/11 06:43 android12-5.4 276e526e4f9c 43f51a00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/02/10 22:40 android12-5.4 276e526e4f9c 43f51a00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/02/08 23:56 android12-5.4 cb850525fc3e ef44b750 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/02/06 14:59 android12-5.4 cb850525fc3e 577d049b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/02/03 20:55 android12-5.4 3f2c17e79750 a21a8419 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2025/02/03 03:52 android12-5.4 3f2c17e79750 568559e4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/06/30 23:32 android12-5.4 4275fce9fe94 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/06/29 15:32 android12-5.4 4275fce9fe94 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/06/28 22:07 android12-5.4 51e9abf68baf 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/06/28 04:27 android12-5.4 6f97bd951d82 6ef39602 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/05/20 19:31 android12-5.4 51cf29fc2bfc c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/05/09 13:15 android12-5.4 51cf29fc2bfc 05079661 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/05/05 21:57 android12-5.4 51cf29fc2bfc 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/05/05 16:42 android12-5.4 51cf29fc2bfc 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/04/29 10:56 android12-5.4 2d5d8240a7cb 27e33c58 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/04/28 10:53 android12-5.4 2d5d8240a7cb 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/04/28 03:47 android12-5.4 2d5d8240a7cb 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
2024/04/25 17:43 android12-5.4 2d5d8240a7cb 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan kernel BUG in ext4_writepages
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
2022/04/17 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
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.