syzbot


kernel BUG in txLock

Status: auto-obsoleted due to no activity on 2023/12/16 09:17
Reported-by: syzbot+3d441f5aa816160f1f80@syzkaller.appspotmail.com
First crash: 245d, last: 245d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in txLock (2) jfs C 4 19d 42d 0/26 upstream: reported C repro on 2024/03/28 08:26
upstream kernel BUG in txLock jfs C inconclusive done 10 125d 242d 26/26 fixed on 2024/02/16 19:40

Sample crash report:
Locker's tblock: ffffc90002721300: 8ac0f780 ffffffff 00000200 00000000
Locker's tblock: ffffc90002721310: 02721310 ffffc900 02721310 ffffc900
Locker's tblock: ffffc90002721320: 00000004 0000001c 00000007 00000000
Tlock: ffffc90002942048: 00010004 20208040 73b0f0f8 ffff8880
Tlock: ffffc90002942058: 95717330 ffff8880 03140000 05002000
Tlock: ffffc90002942068: 06030a00 0000020d 00000000 00000000
Tlock: ffffc90002942078: 00000000 00000000 00000000 00000000
Tlock: ffffc90002942088: 00000000 00000000
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_txnmgr.c:834!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 16382 Comm: syz-executor.0 Not tainted 5.15.131-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:txLock+0x1b17/0x1b30 fs/jfs/jfs_txnmgr.c:834
Code: c0 8a 48 c7 c6 c0 fd c0 8a ba 01 00 00 00 b9 10 00 00 00 41 b8 04 00 00 00 4c 8b 0c 24 6a 00 6a 48 e8 cd 2b 23 01 48 83 c4 10 <0f> 0b e8 f2 2d 9c fe 4c 89 ef 48 c7 c6 20 04 c1 8a e8 33 45 d2 fe
RSP: 0018:ffffc9000bc4ef98 EFLAGS: 00010282
RAX: f90535abfd09e400 RBX: 0000000000000010 RCX: 0000000000040000
RDX: ffffc90003542000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000002 R08: ffffffff8166588c R09: fffff52001789cfd
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90002942000
R13: 0000000000000009 R14: ffffc9000294204a R15: 1ffff92000528409
FS:  00007f26deac96c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055db2628c000 CR3: 0000000074d45000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dtSplitRoot+0x42c/0x1920 fs/jfs/jfs_dtree.c:1919
 dtSplitUp fs/jfs/jfs_dtree.c:985 [inline]
 dtInsert+0x12f6/0x6b00 fs/jfs/jfs_dtree.c:863
 jfs_create+0x7b2/0xbb0 fs/jfs/namei.c:137
 lookup_open fs/namei.c:3392 [inline]
 open_last_lookups fs/namei.c:3462 [inline]
 path_openat+0x12f6/0x2f20 fs/namei.c:3669
 do_filp_open+0x21c/0x460 fs/namei.c:3699
 do_sys_openat2+0x13b/0x500 fs/open.c:1211
 do_sys_open fs/open.c:1227 [inline]
 __do_sys_creat fs/open.c:1301 [inline]
 __se_sys_creat fs/open.c:1295 [inline]
 __x64_sys_creat+0x11f/0x160 fs/open.c:1295
 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: 0033:0x7f26e7968ae9
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:00007f26deac90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f26e7a88050 RCX: 00007f26e7968ae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000300
RBP: 00007f26e79b447a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f26e7a88050 R15: 00007ffc64872b18
 </TASK>
Modules linked in:
---[ end trace 15332c0e4b0286ba ]---
RIP: 0010:txLock+0x1b17/0x1b30 fs/jfs/jfs_txnmgr.c:834
Code: c0 8a 48 c7 c6 c0 fd c0 8a ba 01 00 00 00 b9 10 00 00 00 41 b8 04 00 00 00 4c 8b 0c 24 6a 00 6a 48 e8 cd 2b 23 01 48 83 c4 10 <0f> 0b e8 f2 2d 9c fe 4c 89 ef 48 c7 c6 20 04 c1 8a e8 33 45 d2 fe
RSP: 0018:ffffc9000bc4ef98 EFLAGS: 00010282
RAX: f90535abfd09e400 RBX: 0000000000000010 RCX: 0000000000040000
RDX: ffffc90003542000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000002 R08: ffffffff8166588c R09: fffff52001789cfd
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90002942000
R13: 0000000000000009 R14: ffffc9000294204a R15: 1ffff92000528409
FS:  00007f26deac96c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055db2628c000 CR3: 0000000074d45000 CR4: 00000000003506e0
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
2023/09/07 09:16 linux-5.15.y aff03380bda4 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in txLock
* Struck through repros no longer work on HEAD.