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 802BB2E7F25 for ; Sun, 9 Nov 2025 12:14:03 +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=1762690445; cv=none; b=mv6o69+kFgaWMocSHcFATtZlHJQa9fMSXQv2Ruf2oxR9HEMWR4mx7EIc9girQEYSvLJQ+FdiVE1btdm/iPfnhe9aYBsLz3Sob8g1t2NC9Qj2TWF9KwfiipjeIa9AW15ayDnrTe32TngRjHkMiaIUt7+13p9ciDRSm5HbVhIUOoM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762690445; c=relaxed/simple; bh=hfWdAV8neB9830u6JDV8MCRDEekOBmyvspguPXZkN5U=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=XJz0LWs0QmjL5qcUxrbXiaFggbqp56f/3Goo1SoIdUkqp2r8JSbvMjHX4H4LoDVSDFGpiPDE3/nA2ish7cOkWuBtF4HWmkY/AXakVT/f0p+GsqtCL8ADX210jLRDUsap3aab91B9tcCuDz3UeKxunukQqFU+/3FE6uHCD1cnHIo= 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-43321627eabso75273155ab.3 for ; Sun, 09 Nov 2025 04:14:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762690442; x=1763295242; 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=xY4QkuJExLq8D74iUXRjPvE7n50LIYMzd8jnNA9ew2g=; b=FiD0hxkTh0AlB4sezLgfADUjpHGxLIjgWsXP3oNow7ltH+nSpJv7GQeL+keUY2qoU5 MXL7R+OD0wSeq6dJ5/7ScFJc4udcU5D6Rxl1QdYAEmrLhW+AOw83VOjWHOXTE05VtI8R PZKkB6Cnd/4dhdXnKMyJbv19eaF1FcKmMDe9vyZ2Xjl8gaZovtexMAEtWMU9RABgFdMX JFOEjpqm0T5YqkIKnOZMWZxp3jIVc7IXon4ZetZ+XEexM2oN1aZH9u6vjFFTuR+pgSqj nzxQlz7BArQ6TAy3dIcTYXNeDFvKX5swuDc/QC55lPKgrZCtiVUl00vCTUn5rcEh1wPW cM7Q== X-Forwarded-Encrypted: i=1; AJvYcCVA/dnSCE8mbUvBCb0+sYK44PqwX4VHOfkS9CcE+aOcEEKMqW1PDeDqLdaOCnOyGXu8peu6iNkLYVnwG8s=@vger.kernel.org X-Gm-Message-State: AOJu0YwUra9/LIdrmtzCLLkyNxOFS3OGwUYtJwUvxZtq92vcCXPSY5LL z2k+pn9Ik8uNXecOC7oJ0lyho0pSwhuRiVfgCGPB7k7hBZG7DltD199PJNyZzx/tWtZc7kiTTrG Gip+DhubwULtTPRrUO3ovR7fyL0SfobqlceuI4X94R7FdjrH6SCOH8UM3IuM= X-Google-Smtp-Source: AGHT+IH4hBZkVRmMvUkksC3TxkX3UGpKG85g+nu1eZnbeKdpuTuwTlqTEoXY4tVrMLVMVtgqextZx/cPxtl1I4RTrKyjweUfCeDK Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:16cf:b0:433:79a7:8158 with SMTP id e9e14a558f8ab-43379a7844bmr26704025ab.27.1762690442750; Sun, 09 Nov 2025 04:14:02 -0800 (PST) Date: Sun, 09 Nov 2025 04:14:02 -0800 In-Reply-To: <20251109115742.1138274-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6910858a.a70a0220.22f260.00b0.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! BUG: About to unlock rwsem we don't own! inode=ffff888042108000 i_rwsem.owner=0 current=ffff888000424900 delegated_inode=0000000000000000 CPU: 0 UID: 0 PID: 5833 Comm: syz.0.19 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+0x66f/0x720 fs/open.c:799 do_fchownat+0x161/0x270 fs/open.c:830 __do_sys_fchownat fs/open.c:845 [inline] __se_sys_fchownat fs/open.c:842 [inline] __x64_sys_fchownat+0xb5/0xd0 fs/open.c:842 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: 0033:0x7fa47538efc9 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:00007fa476279038 EFLAGS: 00000246 ORIG_RAX: 0000000000000104 RAX: ffffffffffffffda RBX: 00007fa4755e6090 RCX: 00007fa47538efc9 RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007fa475411f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa4755e6128 R14: 00007fa4755e6090 R15: 00007ffc415c5d88 ------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff8880421080d8, owner = 0x0, curr 0xffff888000424900, list empty WARNING: CPU: 0 PID: 5833 at kernel/locking/rwsem.c:1381 __up_write kernel/locking/rwsem.c:1380 [inline] WARNING: CPU: 0 PID: 5833 at kernel/locking/rwsem.c:1381 up_write+0x3a2/0x420 kernel/locking/rwsem.c:1643 Modules linked in: CPU: 0 UID: 0 PID: 5833 Comm: syz.0.19 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 c3 35 e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6d fd ff ff 48 c7 c1 94 34 7d 8f 80 e1 07 80 c1 03 RSP: 0018:ffffc9000cdcfbf0 EFLAGS: 00010296 RAX: 5957612cb528b400 RBX: ffff8880421080d8 RCX: ffff888000424900 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bba684 R12: 0000000000000000 R13: ffff888042108130 R14: ffff8880421080d8 R15: 1ffff1100842101c FS: 00007fa4762796c0(0000) GS:ffff88808d730000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000004a36b000 CR4: 0000000000352ef0 Call Trace: inode_unlock include/linux/fs.h:990 [inline] chown_common+0x4db/0x720 fs/open.c:801 do_fchownat+0x161/0x270 fs/open.c:830 __do_sys_fchownat fs/open.c:845 [inline] __se_sys_fchownat fs/open.c:842 [inline] __x64_sys_fchownat+0xb5/0xd0 fs/open.c:842 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: 0033:0x7fa47538efc9 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:00007fa476279038 EFLAGS: 00000246 ORIG_RAX: 0000000000000104 RAX: ffffffffffffffda RBX: 00007fa4755e6090 RCX: 00007fa47538efc9 RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007fa475411f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa4755e6128 R14: 00007fa4755e6090 R15: 00007ffc415c5d88 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=13ff50b4580000 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=17bc4b42580000