syzbot


WARNING in nilfs_rmdir

Status: upstream: reported C repro on 2024/11/20 17:47
Subsystems: nilfs
[Documentation on labels]
Reported-by: syzbot+9260555647a5132edd48@syzkaller.appspotmail.com
First crash: 14h58m, last: 11h13m
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [nilfs?] WARNING in nilfs_rmdir 0 (1) 2024/11/20 17:47
Cause bisection attempts (1)
Created Duration User Patch Repo Result
2024/11/21 00:58 bisect upstream running

Sample crash report:
NILFS (loop0): deleting nonexistent file (ino=11), 0
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5832 at fs/inode.c:407 drop_nlink+0xc4/0x110 fs/inode.c:407
Modules linked in:
CPU: 1 UID: 0 PID: 5832 Comm: syz-executor320 Not tainted 6.12.0-syzkaller-01782-gbf9aa14fc523 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:drop_nlink+0xc4/0x110 fs/inode.c:407
Code: bb 70 07 00 00 be 08 00 00 00 e8 07 df e5 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 6d f4 7e 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:ffffc90003ce7c70 EFLAGS: 00010293
RAX: ffffffff8215f523 RBX: 1ffff1100e60d034 RCX: ffff888035dbda00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8215f4a3 R09: 1ffff11006be28ee
R10: dffffc0000000000 R11: ffffed1006be28ef R12: ffff8880730681a0
R13: 1ffff1100f8e05c4 R14: ffff888073068158 R15: dffffc0000000000
FS:  000055557644d480(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffd8aacfb8 CR3: 000000007b40e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_rmdir+0x1b0/0x250 fs/nilfs2/namei.c:342
 vfs_rmdir+0x3a3/0x510 fs/namei.c:4394
 do_rmdir+0x3b5/0x580 fs/namei.c:4453
 __do_sys_rmdir fs/namei.c:4472 [inline]
 __se_sys_rmdir fs/namei.c:4470 [inline]
 __x64_sys_rmdir+0x47/0x50 fs/namei.c:4470
 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: 0033:0x7f88d002d507
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 54 00 00 00 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:00007fffd8aac128 EFLAGS: 00000207 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f88d002d507
RDX: 0000000000008790 RSI: 0000000000000000 RDI: 00007fffd8aad2d0
RBP: 0000000000000065 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000207 R12: 00007fffd8aad2d0
R13: 000055557645e840 R14: 431bde82d7b634db R15: 00007fffd8aaf450
 </TASK>

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/11/20 19:16 upstream bf9aa14fc523 4fca1650 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in nilfs_rmdir
2024/11/20 17:35 upstream bf9aa14fc523 4fca1650 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in nilfs_rmdir
2024/11/20 15:31 upstream bf9aa14fc523 4fca1650 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in nilfs_rmdir
* Struck through repros no longer work on HEAD.