public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
[parent not found: <20251109151559.1145822-1-kartikey406@gmail.com>]
[parent not found: <20251109142934.1142273-1-kartikey406@gmail.com>]
[parent not found: <20251109132736.1141174-1-kartikey406@gmail.com>]
[parent not found: <20251109122513.1139397-1-kartikey406@gmail.com>]
[parent not found: <20251109115742.1138274-1-kartikey406@gmail.com>]
[parent not found: <20251109114011.1100867-1-kartikey406@gmail.com>]
[parent not found: <20251109050218.648149-1-kartikey406@gmail.com>]
[parent not found: <CAMz+-CPDh3FF3Fso8UjYyd0=uyV2hJvYQLTVracNyo896rsF1A@mail.gmail.com>]
[parent not found: <20251017085719.821125-1-kartikey406@gmail.com>]
* [syzbot] [gfs2?] WARNING in chown_common
@ 2025-10-12  5:45 syzbot
  0 siblings, 0 replies; 11+ messages in thread
From: syzbot @ 2025-10-12  5:45 UTC (permalink / raw)
  To: brauner, gfs2, jack, linux-fsdevel, linux-kernel, syzkaller-bugs,
	viro

Hello,

syzbot found the following issue on:

HEAD commit:    98906f9d850e Merge tag 'rtc-6.18' of git://git.kernel.org/..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10e10c58580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c2d7b4143707d3a0
dashboard link: https://syzkaller.appspot.com/bug?extid=04c2672c56fbb9401640
compiler:       Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11ab9b34580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14e10c58580000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-98906f9d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d82186923244/vmlinux-98906f9d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a23e980d2d8e/bzImage-98906f9d.xz
mounted in repro #1: https://storage.googleapis.com/syzbot-assets/b2d6dc77aff3/mount_2.gz
  fsck result: OK (log: https://syzkaller.appspot.com/x/fsck.log?x=13e03892580000)
mounted in repro #2: https://storage.googleapis.com/syzbot-assets/96cd0ec46a20/mount_8.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+04c2672c56fbb9401640@syzkaller.appspotmail.com

DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888036665058, owner = 0x0, curr 0xffff88803e332480, list empty
WARNING: CPU: 0 PID: 5699 at kernel/locking/rwsem.c:1381 __up_write kernel/locking/rwsem.c:1380 [inline]
WARNING: CPU: 0 PID: 5699 at kernel/locking/rwsem.c:1381 up_write+0x3a2/0x420 kernel/locking/rwsem.c:1643
Modules linked in:
CPU: 0 UID: 0 PID: 5699 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__up_write kernel/locking/rwsem.c:1380 [inline]
RIP: 0010:up_write+0x3a2/0x420 kernel/locking/rwsem.c:1643
Code: d0 48 c7 c7 20 ff 6a 8b 48 c7 c6 40 01 6b 8b 48 8b 14 24 4c 89 f1 4d 89 e0 4c 8b 4c 24 08 41 52 e8 b3 36 e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6d fd ff ff 48 c7 c1 94 61 9e 8f 80 e1 07 80 c1 03
RSP: 0018:ffffc9000d4b7c30 EFLAGS: 00010296
RAX: e0ff97a6af656400 RBX: ffff888036665058 RCX: ffff88803e332480
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa650 R12: 0000000000000000
R13: ffff8880366650b0 R14: ffff888036665058 R15: 1ffff11006ccca0c
FS:  00007f2b1bd9b6c0(0000) GS:ffff88808d301000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63d120f000 CR3: 000000004fe06000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:990 [inline]
 chown_common+0x418/0x5c0 fs/open.c:793
 do_fchownat+0x161/0x270 fs/open.c:822
 __do_sys_lchown fs/open.c:847 [inline]
 __se_sys_lchown fs/open.c:845 [inline]
 __x64_sys_lchown+0x85/0xa0 fs/open.c:845
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2b1c78eec9
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:00007f2b1bd9b038 EFLAGS: 00000246 ORIG_RAX: 000000000000005e
RAX: ffffffffffffffda RBX: 00007f2b1c9e6360 RCX: 00007f2b1c78eec9
RDX: 000000000000ee01 RSI: 0000000000000000 RDI: 00002000000006c0
RBP: 00007f2b1c811f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2b1c9e63f8 R14: 00007f2b1c9e6360 R15: 00007ffe60c7e2c8
 </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@googlegroups.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

^ permalink raw reply	[flat|nested] 11+ messages in thread
end of thread, other threads:[~2025-11-09 15:32 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
     [not found] <20251109090808.839886-1-kartikey406@gmail.com>
2025-11-09  9:30 ` [syzbot] [gfs2?] WARNING in chown_common syzbot
     [not found] <20251109151559.1145822-1-kartikey406@gmail.com>
2025-11-09 15:32 ` syzbot
     [not found] <20251109142934.1142273-1-kartikey406@gmail.com>
2025-11-09 15:05 ` syzbot
     [not found] <20251109132736.1141174-1-kartikey406@gmail.com>
2025-11-09 13:29 ` syzbot
     [not found] <20251109122513.1139397-1-kartikey406@gmail.com>
2025-11-09 13:02 ` syzbot
     [not found] <20251109115742.1138274-1-kartikey406@gmail.com>
2025-11-09 12:14 ` syzbot
     [not found] <20251109114011.1100867-1-kartikey406@gmail.com>
2025-11-09 11:56 ` syzbot
     [not found] <20251109050218.648149-1-kartikey406@gmail.com>
2025-11-09  5:17 ` syzbot
     [not found] <CAMz+-CPDh3FF3Fso8UjYyd0=uyV2hJvYQLTVracNyo896rsF1A@mail.gmail.com>
2025-10-29 10:53 ` syzbot
     [not found] <20251017085719.821125-1-kartikey406@gmail.com>
2025-10-17  9:20 ` syzbot
2025-10-12  5:45 syzbot

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox