syzbot


WARNING in __brelse

Status: auto-obsoleted due to no activity on 2023/08/14 05:07
Reported-by: syzbot+38c3015760a9d2c71705@syzkaller.appspotmail.com
First crash: 431d, last: 431d
Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __brelse (3) fs C done done 21 65d 329d 0/27 upstream: reported C repro on 2023/07/26 14:30
android-49 WARNING in __brelse C 6 1904d 1894d 0/3 public: reported C repro on 2019/04/14 00:00
upstream WARNING in __brelse udf C inconclusive 22 488d 630d 22/27 fixed on 2023/02/24 13:50
linux-4.14 WARNING in __brelse vfs udf C 6 491d 597d 0/1 upstream: reported C repro on 2022/10/31 19:01
linux-6.1 WARNING in __brelse 8 51d 108d 0/3 upstream: reported on 2024/03/03 15:14
android-414 WARNING in __brelse C 10 1904d 1896d 0/1 public: reported C repro on 2019/04/12 00:00
upstream WARNING in __brelse (2) udf 1 480d 476d 0/27 auto-obsoleted due to no activity on 2023/06/25 16:51
linux-4.19 WARNING in __brelse vfs reiserfs ext4 udf C 43 472d 628d 0/1 upstream: reported C repro on 2022/10/01 01:04

Sample crash report:
R13: 00007fffdc61105f R14: 00007fca9aed7300 R15: 0000000000022000
 </TASK>
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 4396 at fs/buffer.c:1148 __brelse+0x6b/0x90 fs/buffer.c:1148
Modules linked in:
CPU: 1 PID: 4396 Comm: syz-executor.1 Not tainted 5.15.107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:__brelse+0x6b/0x90 fs/buffer.c:1148
Code: 74 17 e8 d8 3b 9b ff 48 89 df be 04 00 00 00 e8 5b 94 e4 ff f0 ff 0b eb 13 e8 c1 3b 9b ff 48 c7 c7 20 25 97 8a e8 c5 1d 67 ff <0f> 0b 5b 5d c3 89 d9 80 e1 07 80 c1 03 38 c1 7c b8 48 89 df e8 7c
RSP: 0018:ffffc90010d97868 EFLAGS: 00010246
RAX: 705bcf008566c700 RBX: ffff888071927ee0 RCX: 0000000000040000
RDX: ffffc900035b3000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff816612ec R09: ffffed10173667a0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88803cfba160
R13: 1ffff920021b2f30 R14: ffff888071927e80 R15: dffffc0000000000
FS:  00007fca9aed7700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00d77dc00 CR3: 000000006dcd0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 brelse include/linux/buffer_head.h:325 [inline]
 udf_rename+0x1029/0x14d0 fs/udf/namei.c:1214
 vfs_rename+0xd8f/0x1190 fs/namei.c:4736
 do_renameat2+0xb97/0x13b0 fs/namei.c:4887
 __do_sys_rename fs/namei.c:4933 [inline]
 __se_sys_rename fs/namei.c:4931 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:4931
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fca9c965169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fca9aed7168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fca9ca84f80 RCX: 00007fca9c965169
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000020000080
RBP: 00007fca9aed71d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fffdc61105f R14: 00007fca9aed7300 R15: 0000000000022000
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/04/16 05:06 linux-5.15.y 4fdad925aa1a ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __brelse
* Struck through repros no longer work on HEAD.