syzbot


kernel BUG at fs/buffer.c:LINE!

Status: upstream: reported C repro on 2020/01/21 13:12
Reported-by: syzbot+bf9c89ab867a402aa9bb@syzkaller.appspotmail.com
First crash: 1047d, last: 11d
similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG at fs/buffer.c:LINE! C done error 148 1h30m 1689d 0/24 upstream: reported C repro on 2018/04/19 16:02
android-49 kernel BUG at fs/buffer.c:LINE! 5 1588d 1643d 0/3 auto-closed as invalid on 2019/02/22 13:09
linux-4.14 kernel BUG at fs/buffer.c:LINE! C error 58 49d 1316d 0/1 upstream: reported C repro on 2019/04/27 19:47
linux-4.19 kernel BUG at fs/buffer.c:LINE! syz done 23 854d 1307d 1/1 fixed on 2020/09/01 18:34
linux-4.19 kernel BUG at fs/buffer.c:LINE! (2) C error 29 46d 743d 0/1 upstream: reported C repro on 2020/11/21 07:48

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/buffer.c:3027!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 308 Comm: kmmpd-loop0 Not tainted 5.4.210-syzkaller-00006-gc80a5b2e7f63 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:submit_bh_wbc+0x76e/0x790 fs/buffer.c:3027
Code: 08 80 e1 07 80 c1 03 38 c1 0f 8c be fe ff ff 48 8b 7c 24 08 e8 23 7d ed ff e9 af fe ff ff e8 f9 18 bf ff 0f 0b e8 f2 18 bf ff <0f> 0b e8 eb 18 bf ff 0f 0b e8 e4 18 bf ff 0f 0b e8 dd 18 bf ff 0f
RSP: 0018:ffff8881dcf47c48 EFLAGS: 00010293
RAX: ffffffff81a6267e RBX: 0000000000000000 RCX: ffff8881e3274ec0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff1103ccdf6bd R08: ffffffff81a61fa9 R09: ffffed103ccdf6be
R10: ffffed103ccdf6be R11: 1ffff1103ccdf6bd R12: 0000000000000001
R13: ffff8881e66fb5e8 R14: dffffc0000000000 R15: 0000000000003800
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c8e750f3b0 CR3: 00000001ed57a000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 submit_bh+0x21/0x30 fs/buffer.c:3076
 write_mmp_block+0x390/0x550 fs/ext4/mmp.c:55
 kmmpd+0x2a5/0xa10 fs/ext4/mmp.c:246
 kthread+0x2d8/0x360 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 3c3a47752d835253 ]---
RIP: 0010:submit_bh_wbc+0x76e/0x790 fs/buffer.c:3027
Code: 08 80 e1 07 80 c1 03 38 c1 0f 8c be fe ff ff 48 8b 7c 24 08 e8 23 7d ed ff e9 af fe ff ff e8 f9 18 bf ff 0f 0b e8 f2 18 bf ff <0f> 0b e8 eb 18 bf ff 0f 0b e8 e4 18 bf ff 0f 0b e8 dd 18 bf ff 0f
RSP: 0018:ffff8881dcf47c48 EFLAGS: 00010293
RAX: ffffffff81a6267e RBX: 0000000000000000 RCX: ffff8881e3274ec0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff1103ccdf6bd R08: ffffffff81a61fa9 R09: ffffed103ccdf6be
R10: ffffed103ccdf6be R11: 1ffff1103ccdf6bd R12: 0000000000000001
R13: ffff8881e66fb5e8 R14: dffffc0000000000 R15: 0000000000003800
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c8e750f3b0 CR3: 00000001ed57a000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (62):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-android-5-4-kasan 2022/11/22 20:15 android12-5.4 c80a5b2e7f63 9da37ae8 .config log report syz C kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2022/10/13 20:49 android12-5.4 35e910266d44 adf90437 .config log report syz C kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2022/08/24 03:29 android12-5.4 f3c75e616e3f cea8b0f7 .config log report syz C kernel BUG in __block_commit_write
ci2-android-5-4-kasan 2022/05/14 15:55 android12-5.4 ee52e8cb3015 744a39e2 .config log report syz C kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2021/03/27 13:10 android12-5.4 7af03784d889 a8529b82 .config log report syz C kernel BUG in __block_commit_write
ci2-android-5-4-kasan 2020/11/29 09:15 android12-5.4 e37aca80313f a0092f9d .config log report syz C
ci2-android-5-4-kasan 2022/09/03 09:06 android12-5.4 f0306959ab7c 49e94a20 .config log report syz kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2020/02/11 15:47 https://android.googlesource.com/kernel/common android-5.4 0dba8e724663 084454ae .config log report syz
ci2-android-5-4-kasan 2022/10/19 18:40 android12-5.4 ff63a5f5cdf6 b31320fc .config log report info kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2022/09/19 23:33 android12-5.4 f3665979a8e7 dd9a85ff .config log report info kernel BUG in __block_commit_write
ci2-android-5-4-kasan 2022/09/16 12:05 android12-5.4 ccdf6bdf62a8 dd9a85ff .config log report info kernel BUG in __block_commit_write
ci2-android-5-4-kasan 2022/09/10 00:56 android12-5.4 704c7d053806 356d8217 .config log report info kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2022/06/21 01:52 android12-5.4 77dc925ddffb 0fc5c330 .config log report info kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2022/06/05 02:44 android12-5.4 c79dfbc288c5 c8857892 .config log report info kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2022/05/23 12:04 android12-5.4 4958d038706e 4c7657cb .config log report info kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2022/05/14 15:27 android12-5.4 ee52e8cb3015 744a39e2 .config log report info kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2022/04/26 19:07 android12-5.4 99f7ebe8ce34 1fa34c1b .config log report info kernel BUG in __block_commit_write
ci2-android-5-4-kasan 2022/03/31 22:57 android12-5.4 61c005f0f166 c4c32d8c .config log report info kernel BUG in mark_buffer_dirty_inode
ci2-android-5-4-kasan 2021/12/13 12:21 android12-5.4 4fd09f7a7972 0304899b .config log report info kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2021/12/05 04:33 android12-5.4 97b7ffb32f29 a617004c .config log report info kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2021/11/11 02:41 android12-5.4 f49f3b377eae 75b04091 .config log report info kernel BUG in mark_buffer_dirty_inode
ci2-android-5-4-kasan 2021/10/24 02:12 android12-5.4 eb4a5a5dbd5b 282f03fb .config log report info kernel BUG in mark_buffer_dirty_inode
ci2-android-5-4-kasan 2021/08/25 00:31 android12-5.4 b5c2ddc1ce03 b599f2fc .config log report info kernel BUG in mark_buffer_dirty_inode
ci2-android-5-4-kasan 2021/08/04 00:10 android12-5.4 e7e1f9adf836 6c236867 .config log report info kernel BUG in submit_bh_wbc
ci2-android-5-4-kasan 2021/03/25 08:12 android12-5.4 be1170d846f3 6a383ecf .config log report info kernel BUG in mark_buffer_dirty_inode
ci2-android-5-4-kasan 2020/09/23 19:40 https://android.googlesource.com/kernel/common android-5.4 63d1c2f0b547 54289b08 .config log report info
ci2-android-5-4-kasan 2020/06/27 04:28 https://android.googlesource.com/kernel/common android-5.4 d8776a0de2d4 ffec44b5 .config log report
ci2-android-5-4-kasan 2020/06/11 23:36 https://android.googlesource.com/kernel/common android-5.4 91d2b0a4c0ab 1beaee21 .config log report
ci2-android-5-4-kasan 2020/06/05 16:09 https://android.googlesource.com/kernel/common android-5.4 8b41eaf1ffa9 d36418e9 .config log report
ci2-android-5-4-kasan 2020/06/02 18:37 https://android.googlesource.com/kernel/common android-5.4 5006e0b31efe 52fd7b7d .config log report
ci2-android-5-4-kasan 2020/05/31 11:14 https://android.googlesource.com/kernel/common android-5.4 af2b56c502d6 a0331e89 .config log report
ci2-android-5-4-kasan 2020/05/23 12:24 https://android.googlesource.com/kernel/common android-5.4 ea7bbd69ade9 4afdfa20 .config log report
ci2-android-5-4-kasan 2020/05/21 19:18 https://android.googlesource.com/kernel/common android-5.4 8ca744822f5e 4afdfa20 .config log report
ci2-android-5-4-kasan 2020/05/17 01:39 https://android.googlesource.com/kernel/common android-5.4 b818fc58f06b 37bccd4e .config log report
ci2-android-5-4-kasan 2020/05/06 20:59 https://android.googlesource.com/kernel/common android-5.4 db0cef2fbf05 4618eb2d .config log report
ci2-android-5-4-kasan 2020/05/03 01:49 https://android.googlesource.com/kernel/common android-5.4 04ae7f0f4cb7 5457883a .config log report
ci2-android-5-4-kasan 2020/05/02 19:20 https://android.googlesource.com/kernel/common android-5.4 4519a937255a 58da4c35 .config log report
ci2-android-5-4-kasan 2020/04/27 13:48 https://android.googlesource.com/kernel/common android-5.4 5d7b3b73e9a8 0ce7569e .config log report
ci2-android-5-4-kasan 2020/04/19 07:26 https://android.googlesource.com/kernel/common android-5.4 d573071fcc49 365fba24 .config log report
ci2-android-5-4-kasan 2020/04/13 16:14 https://android.googlesource.com/kernel/common android-5.4 adacfcf4fa06 17a986e5 .config log report
ci2-android-5-4-kasan 2020/04/03 22:29 https://android.googlesource.com/kernel/common android-5.4 2a3049590d57 ef26b610 .config log report
ci2-android-5-4-kasan 2020/03/30 12:13 https://android.googlesource.com/kernel/common android-5.4 669d93f85535 c8d1cc20 .config log report
ci2-android-5-4-kasan 2020/03/29 10:04 https://android.googlesource.com/kernel/common android-5.4 8398205ce446 05736b29 .config log report
ci2-android-5-4-kasan 2020/03/22 11:51 https://android.googlesource.com/kernel/common android-5.4 21cc8e2041af 78267cec .config log report
ci2-android-5-4-kasan 2020/03/16 01:45 https://android.googlesource.com/kernel/common android-5.4 37975e4427d6 749688d2 .config log report
ci2-android-5-4-kasan 2020/03/12 19:04 https://android.googlesource.com/kernel/common android-5.4 6a3acdbcc7c3 d850e9d0 .config log report
ci2-android-5-4-kasan 2020/03/09 06:14 https://android.googlesource.com/kernel/common android-5.4 3334f0da669e 2e9971bb .config log report
ci2-android-5-4-kasan 2020/03/09 05:05 https://android.googlesource.com/kernel/common android-5.4 3334f0da669e 2e9971bb .config log report
ci2-android-5-4-kasan 2020/03/09 00:56 https://android.googlesource.com/kernel/common android-5.4 3334f0da669e 2e9971bb .config log report
ci2-android-5-4-kasan 2020/03/03 16:37 https://android.googlesource.com/kernel/common android-5.4 2c2101d18159 350a7a26 .config log report
ci2-android-5-4-kasan 2020/02/28 02:17 https://android.googlesource.com/kernel/common android-5.4 35eb457cb886 c88c7b75 .config log report
ci2-android-5-4-kasan 2020/02/14 01:49 https://android.googlesource.com/kernel/common android-5.4 6387e43186c9 5d7b90f1 .config log report
ci2-android-5-4-kasan 2020/02/11 13:27 https://android.googlesource.com/kernel/common android-5.4 0dba8e724663 084454ae .config log report
ci2-android-5-4-kasan 2020/02/11 12:09 https://android.googlesource.com/kernel/common android-5.4 0dba8e724663 084454ae .config log report
ci2-android-5-4-kasan 2020/02/08 23:15 https://android.googlesource.com/kernel/common android-5.4 9204f620c2a9 06150bf1 .config log report
ci2-android-5-4-kasan 2020/02/05 02:23 https://android.googlesource.com/kernel/common android-5.4 b3fbbf580c21 93e5e335 .config log report
ci2-android-5-4-kasan 2020/02/03 00:21 https://android.googlesource.com/kernel/common android-5.4 83003512ab3b 93e5e335 .config log report
ci2-android-5-4-kasan 2020/01/31 02:41 https://android.googlesource.com/kernel/common android-5.4 383f53ee186a 5ed23f9a .config log report
ci2-android-5-4-kasan 2020/01/31 02:38 https://android.googlesource.com/kernel/common android-5.4 383f53ee186a 5ed23f9a .config log report
ci2-android-5-4-kasan 2020/01/30 23:59 https://android.googlesource.com/kernel/common android-5.4 cac5f7901828 5ed23f9a .config log report
ci2-android-5-4-kasan 2020/01/28 21:17 https://android.googlesource.com/kernel/common android-5.4 b2b96d09ef40 c8e81ce4 .config log report
ci2-android-5-4-kasan 2020/01/21 13:11 https://android.googlesource.com/kernel/common android-5.4 b0b02162a4b8 8eda0b95 .config log report
* Struck through repros no longer work on HEAD.