syzbot


WARNING in nilfs_rename

Status: upstream: reported on 2024/12/23 00:39
Subsystems: nilfs
[Documentation on labels]
Reported-by: syzbot+de6c4b3beb823e112ead@syzkaller.appspotmail.com
First crash: 52d, last: 9d09h
Discussions (3)
Title Replies (including bot) Last reply
[syzbot] Monthly nilfs report (Jan 2025) 0 (1) 2025/01/31 10:07
[syzbot] Monthly nilfs report (Dec 2024) 0 (1) 2024/12/30 01:15
[syzbot] [nilfs?] WARNING in nilfs_rename 0 (1) 2024/12/23 00:39

Sample crash report:
loop0: detected capacity change from 0 to 1024
EXT4-fs: Ignoring removed nobh option
EXT4-fs (loop0): can't mount with data=, fs mounted w/o journal
loop0: detected capacity change from 0 to 4096
NILFS (loop0): invalid segment: Checksum error in segment payload
NILFS (loop0): trying rollback from an earlier position
NILFS (loop0): recovery complete
loop0: detected capacity change from 4096 to 64
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5320 at fs/inode.c:407 drop_nlink+0xc4/0x110 fs/inode.c:407
Modules linked in:
CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted 6.13.0-syzkaller-09585-gb4b0881156fb #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:drop_nlink+0xc4/0x110 fs/inode.c:407
Code: bb 70 07 00 00 be 08 00 00 00 e8 97 12 e7 ff 3e 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 dd 7a 80 ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff
RSP: 0018:ffffc9000d2cf8f0 EFLAGS: 00010283
RAX: ffffffff823ef1b3 RBX: 1ffff11008ab3834 RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 0000000000000ca0 RDI: 0000000000000ca1
RBP: 0000000000000000 R08: ffffffff823ef133 R09: 1ffffffff20367ee
R10: dffffc0000000000 R11: fffffbfff20367ef R12: ffff88804559c1a0
R13: 1ffff92001a59f30 R14: ffff88804559c158 R15: dffffc0000000000
FS:  00007f6b46b746c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b46b72fb8 CR3: 0000000040fc6000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_rename+0x5f4/0x980 fs/nilfs2/namei.c:418
 vfs_rename+0xbdb/0xf00 fs/namei.c:5069
 do_renameat2+0xd94/0x13f0 fs/namei.c:5226
 __do_sys_rename fs/namei.c:5273 [inline]
 __se_sys_rename fs/namei.c:5271 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5271
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6b45d8cda9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6b46b74038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f6b45fa5fa0 RCX: 00007f6b45d8cda9
RDX: 0000000000000000 RSI: 0000000020000b80 RDI: 0000000020001640
RBP: 00007f6b45e0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6b45fa5fa0 R15: 00007fff8e683678
 </TASK>

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/31 03:26 upstream b4b0881156fb 4c6ac32f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in nilfs_rename
2025/01/09 16:36 upstream eea6e4b4dfb8 9220929f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in nilfs_rename
2025/01/02 03:56 upstream 56e6a3499e14 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in nilfs_rename
2024/12/19 00:29 upstream aef25be35d23 1432fc84 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in nilfs_rename
* Struck through repros no longer work on HEAD.