From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1C6F02D6400 for ; Sun, 9 Nov 2025 15:05:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762700705; cv=none; b=F/Dy9YlHJ6D0fdER1gTuPOSbED46t3e6RHmL+rtIzLQpgYZDteaNjXjRA3h/KHv2s75JNdwUEiJ5OREJopkwUYWZImk6InhQrur11rI1xwTxwvxobUH81lm5yJ1dOfa4RrcUsbgZBJA+6o6JCVuKtRgzeLC94vPD6iLHEEPfNPU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762700705; c=relaxed/simple; bh=PJrWlU+YFN8HqBushORRLTdVD4GvJkIPpDf5YLplygA=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=eKZmKDNAdqHX1iVJ4nJW57N0ZiMQXmOzu4YpKeEjo1fimE5Hp/z4SYSQmIe/K59RffJ3D1vXaNLsacpZKnbXVaMoFtB4rJYIsZAhEU+5EfP62pNlXYcYQHmo3k2LcaBmIO/Unh2dbABV/K3xmfA7o04dUj8zh6MP+CK0Ziip9Jk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.197 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f197.google.com with SMTP id e9e14a558f8ab-433795a26c5so5785165ab.3 for ; Sun, 09 Nov 2025 07:05:02 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762700702; x=1763305502; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=A2OdtiXIbuQZatpYdTc3cFXUEUcJdYB6m4MQNfuwiBc=; b=fx2n4YCbNjA//lYmLdspSQyO44LB62Lo1K3B7RV+sbjQC6y35EbzDVdT/jHTtV8/D4 BpWPN+hj/UtOzytDHvPpVzPH6j/4uuhH4Enwjk7EjDlcipzLGsM10181YNC6WD3vCKzA iDv/Ze0NWQHXw8eBHi4wfG/2Rm4C9pdaf1M10E+PgP8d5AMNUZJL4hkrtqFwHkK1zJan 4inv+Xazj+d7syXSOTq/7EIuy0hgoYrwd0dw2uOCYMRrzbsUkHt0e4bd4FMHS2khELrn MSxVJZYvbhsLa9lpw2cPsLNnihZwPpQgHWlhE63pCtdyGSaTjE8zQDz2Zn1rBiO0HEeJ MoSA== X-Forwarded-Encrypted: i=1; AJvYcCWjVvLKUZwtWkjHbvk0swT/QtBRGZTxK/BGsrpIKzIDEmNUP5BHj4MKg2Y8fyH8gMyRIdobSYEUEeQUE1Y=@vger.kernel.org X-Gm-Message-State: AOJu0YwnJr8yk7tjbIPu8kPmneBgOJCihZLkHw6qAnDT9gmlIecowTK3 EHHROeDDzLZhasQiF227vc0KgHRhVUvPPz2OmpNYZrsKIa3Owhccdnf/qFL7Qi89sxq5uryD0RU IrTSuRmdWjQegGP34619yxiuCpKf1wE0yzjffZ0+Kmk0CZoad2MzMVmW3KFY= X-Google-Smtp-Source: AGHT+IE3moNTm5Se2mbNKMdizBnj0/kdaDRUi0vpoi2pPG0QEsLWuB/j2RCGFklRnFkkVc2y05ybruUha7b1w8CSFL8Bg1qqoABh Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2307:b0:433:5a5c:5d75 with SMTP id e9e14a558f8ab-43367e31d36mr77006795ab.18.1762700702321; Sun, 09 Nov 2025 07:05:02 -0800 (PST) Date: Sun, 09 Nov 2025 07:05:02 -0800 In-Reply-To: <20251109142934.1142273-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6910ad9e.a70a0220.22f260.00ba.GAE@google.com> Subject: Re: [syzbot] [gfs2?] WARNING in chown_common From: syzbot To: kartikey406@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: BUG: About to unlock rwsem we don't own! After notify_change: owner=0, error=0 BUG: About to unlock rwsem we don't own! inode=ffff888043102e60 i_rwsem.owner=0 current=ffff88801fbd8000 delegated_inode=0000000000000000 CPU: 0 UID: 0 PID: 5829 Comm: syz.0.21 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 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 chown_common+0x555/0x6f0 fs/open.c:803 do_fchownat+0x161/0x270 fs/open.c:834 __do_sys_fchownat fs/open.c:849 [inline] __se_sys_fchownat fs/open.c:846 [inline] __x64_sys_fchownat+0xb5/0xd0 fs/open.c:846 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: 0033:0x7f7f3658efc9 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:00007f7f373a1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000104 RAX: ffffffffffffffda RBX: 00007f7f367e6090 RCX: 00007f7f3658efc9 RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007f7f36611f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7f367e6128 R14: 00007f7f367e6090 R15: 00007fff1e869178 inode_unlock: inode=ffff888043102e60, owner=0, current=ffff88801fbd8000 (syz.0.21:5829) CPU: 0 UID: 0 PID: 5829 Comm: syz.0.21 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 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 inode_unlock+0x92/0xd0 include/linux/fs.h:994 chown_common+0x55f/0x6f0 fs/open.c:805 do_fchownat+0x161/0x270 fs/open.c:834 __do_sys_fchownat fs/open.c:849 [inline] __se_sys_fchownat fs/open.c:846 [inline] __x64_sys_fchownat+0xb5/0xd0 fs/open.c:846 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: 0033:0x7f7f3658efc9 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:00007f7f373a1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000104 RAX: ffffffffffffffda RBX: 00007f7f367e6090 RCX: 00007f7f3658efc9 RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007f7f36611f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7f367e6128 R14: 00007f7f367e6090 R15: 00007fff1e869178 ------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888043102f38, owner = 0x0, curr 0xffff88801fbd8000, list empty WARNING: CPU: 0 PID: 5829 at kernel/locking/rwsem.c:1381 __up_write kernel/locking/rwsem.c:1380 [inline] WARNING: CPU: 0 PID: 5829 at kernel/locking/rwsem.c:1381 up_write+0x3a2/0x420 kernel/locking/rwsem.c:1643 Modules linked in: CPU: 0 UID: 0 PID: 5829 Comm: syz.0.21 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 80 ff 6a 8b 48 c7 c6 a0 01 6b 8b 48 8b 14 24 4c 89 f1 4d 89 e0 4c 8b 4c 24 08 41 52 e8 b3 35 e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6d fd ff ff 48 c7 c1 94 55 7d 8f 80 e1 07 80 c1 03 RSP: 0018:ffffc90002e77bf0 EFLAGS: 00010296 RAX: 59e03a60efe32100 RBX: ffff888043102f38 RCX: ffff88801fbd8000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: dffffc0000000000 R08: ffffffff8f7d2577 R09: 1ffffffff1efa4ae R10: dffffc0000000000 R11: fffffbfff1efa4af R12: 0000000000000000 R13: ffff888043102f90 R14: ffff888043102f38 R15: 1ffff110086205e8 FS: 00007f7f373a16c0(0000) GS:ffff88808d729000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000043752000 CR4: 0000000000352ef0 Call Trace: chown_common+0x55f/0x6f0 fs/open.c:805 do_fchownat+0x161/0x270 fs/open.c:834 __do_sys_fchownat fs/open.c:849 [inline] __se_sys_fchownat fs/open.c:846 [inline] __x64_sys_fchownat+0xb5/0xd0 fs/open.c:846 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: 0033:0x7f7f3658efc9 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:00007f7f373a1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000104 RAX: ffffffffffffffda RBX: 00007f7f367e6090 RCX: 00007f7f3658efc9 RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007f7f36611f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7f367e6128 R14: 00007f7f367e6090 R15: 00007fff1e869178 Tested on: commit: 439fc29d Merge tag 'drm-fixes-2025-11-09' of https://g.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15f21a58580000 kernel config: https://syzkaller.appspot.com/x/.config?x=929790bc044e87d7 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 patch: https://syzkaller.appspot.com/x/patch.diff?x=1624d0b4580000