linux-kernel - [syzbot] [nilfs?] WARNING in nilfs_btree

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <670ea678.050a0220.d5849.000b.GAE@google.com>
Date: Tue, 15 Oct 2024 10:29:28 -0700
From: syzbot <syzbot+b2b14916b77acf8626d7@...kaller.appspotmail.com>
To: konishi.ryusuke@...il.com, linux-kernel@...r.kernel.org, 
	linux-nilfs@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [nilfs?] WARNING in nilfs_btree_propagate (2)

Hello,

syzbot found the following issue on:

HEAD commit:    1d227fcc7222 Merge tag 'net-6.12-rc3' of git://git.kernel...
git tree:       upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1342205f980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=7a3fccdd0bb995
dashboard link: https://syzkaller.appspot.com/bug?extid=b2b14916b77acf8626d7
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11692840580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12ea6f07980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f64f03b05002/disk-1d227fcc.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3ab8ba99a1b6/vmlinux-1d227fcc.xz
kernel image: https://storage.googleapis.com/syzbot-assets/97581c221708/bzImage-1d227fcc.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/0cfc62de73c5/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b2b14916b77acf8626d7@...kaller.appspotmail.com

WARNING: CPU: 0 PID: 5245 at fs/nilfs2/btree.c:2089 nilfs_btree_propagate+0xc79/0xdf0 fs/nilfs2/btree.c:2089
Modules linked in:
CPU: 0 UID: 0 PID: 5245 Comm: segctord Not tainted 6.12.0-rc2-syzkaller-00205-g1d227fcc7222 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:nilfs_btree_propagate+0xc79/0xdf0 fs/nilfs2/btree.c:2089
Code: 48 8b 44 24 08 49 8d 74 05 58 e8 12 67 ff ff 48 8b 6c 24 10 43 80 3c 27 00 0f 85 16 fe ff ff e9 19 fe ff ff e8 78 1d 20 fe 90 <0f> 0b 90 e9 ea f3 ff ff e8 6a 1d 20 fe 48 8b 1c 24 48 81 c3 d0 00
RSP: 0018:ffffc90003d873a0 EFLAGS: 00010293
RAX: ffffffff8374c988 RBX: 0000000000000000 RCX: ffff888011dada00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffffff8c47aec8 R08: ffffffff8374bd6c R09: 1ffff1100ec15f96
R10: dffffc0000000000 R11: ffffed100ec15f97 R12: dffffc0000000000
R13: 1ffff1100ec15f9f R14: 1ffff1100ec15f96 R15: ffff8880760afcb0
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8737b0dd58 CR3: 0000000079068000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_bmap_propagate+0x75/0x120 fs/nilfs2/bmap.c:345
 nilfs_collect_file_data+0x4d/0xd0 fs/nilfs2/segment.c:587
 nilfs_segctor_apply_buffers+0x184/0x340 fs/nilfs2/segment.c:1006
 nilfs_segctor_scan_file+0x28c/0xa50 fs/nilfs2/segment.c:1045
 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1216 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1540 [inline]
 nilfs_segctor_do_construct+0x1c28/0x6b90 fs/nilfs2/segment.c:2115
 nilfs_segctor_construct+0x181/0x6b0 fs/nilfs2/segment.c:2479
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2587 [inline]
 nilfs_segctor_thread+0x69e/0xe80 fs/nilfs2/segment.c:2701
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>


---
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.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup