From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 1CBC42EBBA1 for ; Sun, 9 Nov 2025 13:02:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762693324; cv=none; b=VWjEg9tdcsjpsf9IDEMWAE2U65Ho6eU0FlpZYWUSTQfOQMfM/xr9mkbfPtT5NpahsWwO7BPTtX/iTCX30FIXA2PSYD7LLO5deQFcmHUu+KhVg/W1xPAtCdiQgitSjhomOHSZNTsYPuFFXPh+IEUIbbRblwvP19vs2pgKdy3EQJ4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762693324; c=relaxed/simple; bh=7YGkiBIgdSQWGXXXzMFRJg7hyhRfOkJoKlTV+EfOgYE=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=u0HvjIkmfveqorRtqbs4hXYe3O0VVAQ2aj9LKaHy+UPaYi0X4Airdkx+ngUly86xyenaFa3q50KcznXEsXooTmC68KjtUFzcMOSNV4N2cEGR2/HazbPLPY96WeLX9rfjuxEwrJ/42MXtQ1i+U5vFsgEF7ZvPcqKFvUd9NoxBNDI= 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=209.85.166.200 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-f200.google.com with SMTP id e9e14a558f8ab-43330d77c3aso83446095ab.3 for ; Sun, 09 Nov 2025 05:02:02 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762693322; x=1763298122; 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=iWF9duusjyLRXyYOm5taZYra/qiTkEiBrfd5i+t8lcg=; b=AALo4YRqORAx2tHtfdZ/+92aLZV2Ovp3ExILkyZ0j0YUu7hWFBJdMPYieNg6B+r5cB kqp1dS0+dARNxmLSNaW+ZlmAMdHfL10vSxEAwh2ckl4IwLPuOakVlwI4TgwcCc/CCQKF 6njk6ZiJRf1AzUlr+mHTYrL5E7fipuko95ToL9gmUYLYlkaIywH/1Urh8SRUihdo6Xnt x2ERruLo1RclZNYmWG3cdzfOxdWTWj3/9Y1fdDgFsSJBh906kFUkQUNOaW5xwMl8yOrk jFFAXijhmir/hDRQQFgAtdFdiRjdC4uBoG1ZZSwyljA5PmhhBQmA6Zb1fNm0UqsZK96O oT/Q== X-Forwarded-Encrypted: i=1; AJvYcCUbi17jstwrmrMO8iN9y1cMZdp8OUC28hGeabe53z5zBnC/fASX6WGW5mCepyL9fnUQLjN33j+oEv+7C+w=@vger.kernel.org X-Gm-Message-State: AOJu0YxsxPESucg9GCSATQSVo0BhMQgbinwD2WWrB5fl/cuNt59++c7/ qKSpAVyD8nXAxAgtqebN9xPbi0h4h5RD5OxlyhB0a/eZo0rRSnj/rKnnvRtV1iPO+29M7QLbWPw +JDBVnUgaJ3JjlyHUjNbq5uu4JMSEpzhacfVdAZQ302BLvqolY17i/0OMze8= X-Google-Smtp-Source: AGHT+IFxTLXe4vy7G0gwzeLerANAIswgyzmiV/sDO8Wnx+5KNAC4qijX0dB9vheP5NImqcVWuw26y8WfrIv5+8cZhbbJl17XESj7 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3e8d:b0:433:79e4:7adb with SMTP id e9e14a558f8ab-43379e47d20mr30319755ab.11.1762693322186; Sun, 09 Nov 2025 05:02:02 -0800 (PST) Date: Sun, 09 Nov 2025 05:02:02 -0800 In-Reply-To: <20251109122513.1139397-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <691090ca.a70a0220.22f260.00b2.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 security_path_chown: owner=ffff888033982480 After notify_change: owner=0, error=0 BUG: About to unlock rwsem we don't own! inode=ffff8880112b4f80 i_rwsem.owner=0 current=ffff888033982480 delegated_inode=0000000000000000 CPU: 0 UID: 0 PID: 5838 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 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 chown_common+0x659/0x700 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: 0033:0x7fd235d8efc9 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:00007fd236c11038 EFLAGS: 00000246 ORIG_RAX: 0000000000000104 RAX: ffffffffffffffda RBX: 00007fd235fe6090 RCX: 00007fd235d8efc9 RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007fd235e11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd235fe6128 R14: 00007fd235fe6090 R15: 00007ffe7f7950f8 ------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff8880112b5058, owner = 0x0, curr 0xffff888033982480, list empty WARNING: CPU: 0 PID: 5838 at kernel/locking/rwsem.c:1381 __up_write kernel/locking/rwsem.c:1380 [inline] WARNING: CPU: 0 PID: 5838 at kernel/locking/rwsem.c:1381 up_write+0x3a2/0x420 kernel/locking/rwsem.c:1643 Modules linked in: CPU: 0 UID: 0 PID: 5838 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 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:ffffc90002a3fbf0 EFLAGS: 00010296 RAX: 9a6f5dfb05cd2e00 RBX: ffff8880112b5058 RCX: ffff888033982480 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bba684 R12: 0000000000000000 R13: ffff8880112b50b0 R14: ffff8880112b5058 R15: 1ffff11002256a0c FS: 00007fd236c116c0(0000) GS:ffff88808d730000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faf3f3f7f50 CR3: 0000000059dc8000 CR4: 0000000000352ef0 Call Trace: inode_unlock include/linux/fs.h:990 [inline] chown_common+0x4e3/0x700 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: 0033:0x7fd235d8efc9 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:00007fd236c11038 EFLAGS: 00000246 ORIG_RAX: 0000000000000104 RAX: ffffffffffffffda RBX: 00007fd235fe6090 RCX: 00007fd235d8efc9 RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007fd235e11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd235fe6128 R14: 00007fd235fe6090 R15: 00007ffe7f7950f8 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=168e517c580000 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=1126517c580000