syzbot


kernel BUG in __block_commit_write

Status: auto-obsoleted due to no activity on 2023/12/12 11:41
Reported-by: syzbot+54c98d65fa97ee39951c@syzkaller.appspotmail.com
First crash: 258d, last: 258d
Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 kernel BUG in __block_commit_write syz error error 1 257d 257d 0/2 auto-obsoleted due to no activity on 2023/12/12 18:06
upstream kernel BUG at fs/buffer.c:LINE! nilfs C done error 567 49d 2230d 26/26 fixed on 2024/04/10 03:59
android-6-1 kernel BUG in __block_commit_write (2) origin:upstream C error 1 13d 130d 0/2 upstream: reported C repro on 2024/01/19 10:04
linux-4.14 kernel BUG at fs/buffer.c:LINE! C error 59 463d 1857d 0/1 upstream: reported C repro on 2019/04/27 19:47
linux-4.19 kernel BUG at fs/buffer.c:LINE! (2) udf ext4 C error 31 470d 1284d 0/1 upstream: reported C repro on 2020/11/21 07:48
android-54 kernel BUG at fs/buffer.c:LINE! ext4 C 547 12h16m 1589d 0/2 upstream: reported C repro on 2020/01/21 13:12
android-5-10 kernel BUG in __block_commit_write (2) syz error 2 69d 132d 0/2 premoderation: reported syz repro on 2024/01/17 04:07

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/buffer.c:2104!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5941 Comm: syz-executor.1 Not tainted 5.10.194-syzkaller-00508-ga27512601c2d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:__block_commit_write+0x236/0x240 fs/buffer.c:2104
Code: ff 48 8b 5d c0 48 89 df be 08 00 00 00 e8 a2 fa e7 ff f0 80 0b 04 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 0a a4 aa ff <0f> 0b 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54
RSP: 0000:ffffc9000ae570f8 EFLAGS: 00010287
RAX: ffffffff81bffc26 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90001cdc000 RSI: 000000000000ae8a RDI: 000000000000ae8b
RBP: ffffc9000ae57140 R08: ffffffff81bffa56 R09: fffff94000af5ab9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea00057ad5c0
R13: 0000000000000017 R14: 4000000000000095 R15: 0000000000000016
FS:  00007f622a30f6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fb25000 CR3: 000000012029b000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 block_write_end+0x47/0x90 fs/buffer.c:2193
 ext4_write_end+0x253/0xe90 fs/ext4/inode.c:1320
 ext4_da_write_end+0xbe/0xbb0 fs/ext4/inode.c:3150
 generic_perform_write+0x3d9/0x570 mm/filemap.c:3517
 ext4_buffered_write_iter+0x482/0x610 fs/ext4/file.c:271
 ext4_file_write_iter+0x193/0x1c80 fs/ext4/file.c:685
 do_iter_readv_writev+0x58e/0x790
 do_iter_write+0x183/0x650 fs/read_write.c:866
 vfs_iter_write+0x7c/0xa0 fs/read_write.c:907
 iter_file_splice_write+0x7f1/0xf80 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0xff/0x130 fs/splice.c:933
 splice_direct_to_actor+0x4d1/0xba0 fs/splice.c:888
 do_splice_direct+0x27f/0x3c0 fs/splice.c:976
 do_sendfile+0x8f4/0x10e0 fs/read_write.c:1257
 __do_sys_sendfile64 fs/read_write.c:1318 [inline]
 __se_sys_sendfile64 fs/read_write.c:1304 [inline]
 __x64_sys_sendfile64+0x1ce/0x230 fs/read_write.c:1304
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f622b58cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f622a30f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f622b6abf80 RCX: 00007f622b58cae9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f622b5d847a R08: 0000000000000000 R09: 0000000000000000
R10: 000080001d00c0d0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f622b6abf80 R15: 00007ffd1edfc208
Modules linked in:
---[ end trace e3b422ab01400dba ]---
RIP: 0010:__block_commit_write+0x236/0x240 fs/buffer.c:2104
Code: ff 48 8b 5d c0 48 89 df be 08 00 00 00 e8 a2 fa e7 ff f0 80 0b 04 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 0a a4 aa ff <0f> 0b 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54
RSP: 0000:ffffc9000ae570f8 EFLAGS: 00010287
RAX: ffffffff81bffc26 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90001cdc000 RSI: 000000000000ae8a RDI: 000000000000ae8b
RBP: ffffc9000ae57140 R08: ffffffff81bffa56 R09: fffff94000af5ab9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea00057ad5c0
R13: 0000000000000017 R14: 4000000000000095 R15: 0000000000000016
FS:  00007f622a30f6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556590818 CR3: 000000012029b000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/09/13 11:34 android13-5.10-lts a27512601c2d 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 kernel BUG in __block_commit_write
* Struck through repros no longer work on HEAD.