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Message-ID: <68197d2b.050a0220.23d401.2859.GAE@google.com>
Date: Mon, 05 May 2025 20:08:27 -0700
From: syzbot <syzbot+ba5f49027aace342d24d@...kaller.appspotmail.com>
To: jfs-discussion@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
shaggy@...nel.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [jfs?] KMSAN: uninit-value in BT_STACK_DUMP
Hello,
syzbot found the following issue on:
HEAD commit: 02ddfb981de8 Merge tag 'scsi-fixes' of git://git.kernel.or..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=106abf74580000
kernel config: https://syzkaller.appspot.com/x/.config?x=9dc42c34a3f5c357
dashboard link: https://syzkaller.appspot.com/bug?extid=ba5f49027aace342d24d
compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=109589b3980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15ba1f74580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5ca57f5a3f77/disk-02ddfb98.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3f23cbc11e68/vmlinux-02ddfb98.xz
kernel image: https://storage.googleapis.com/syzbot-assets/73e63afac354/bzImage-02ddfb98.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/6ef4108d05dc/mount_2.gz
fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=169bb02f980000)
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ba5f49027aace342d24d@...kaller.appspotmail.com
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
=====================================================
BUG: KMSAN: uninit-value in BT_STACK_DUMP+0x5e5/0x600 fs/jfs/jfs_btree.h:136
BT_STACK_DUMP+0x5e5/0x600 fs/jfs/jfs_btree.h:136
dtSearch+0x393f/0x3d30 fs/jfs/jfs_dtree.c:774
jfs_lookup+0x179/0x590 fs/jfs/namei.c:1461
lookup_one_qstr_excl_raw+0x204/0x5b0 fs/namei.c:1689
lookup_one_qstr_excl fs/namei.c:1711 [inline]
do_unlinkat+0x2e3/0xe50 fs/namei.c:4631
__do_sys_unlink fs/namei.c:4689 [inline]
__se_sys_unlink fs/namei.c:4687 [inline]
__x64_sys_unlink+0x71/0xb0 fs/namei.c:4687
x64_sys_call+0x29de/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:88
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x1b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Local variable nd created at:
__filename_parentat+0x4c/0x990 fs/namei.c:2726
filename_parentat fs/namei.c:2749 [inline]
do_unlinkat+0xe3/0xe50 fs/namei.c:4618
CPU: 1 UID: 0 PID: 5791 Comm: syz-executor444 Not tainted 6.15.0-rc3-syzkaller-00094-g02ddfb981de8 #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
=====================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.
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If the report is already addressed, let syzbot know by replying with:
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If you want syzbot to run the reproducer, reply with:
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If the report is a duplicate of another one, reply with:
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#syz undup
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