From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f197.google.com (mail-oi1-f197.google.com [209.85.167.197]) (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 BC06519F137 for ; Thu, 4 Dec 2025 01:21:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764811268; cv=none; b=ii7u+17b5Y3EzFPRaITX9cYfdvEmFs0HDRDXVALDIniJU+yWblpMbgUEIxko0UKP3MGlGXEtolu+bpT+RjJDe0WrDRpYFnJhxFxM9BPKuv1x2hne1OcQfOZiPDuAQm3iSbXzRhA9KSaywjxDjhDfRNV/pweit4G1pfTrYhmTLA8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764811268; c=relaxed/simple; bh=/5scZ/eC107Phge51Zoi2mfL0kncJfhraiodin6jWsY=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=jBW0IzNO1zLtqUqlutiAR0f/XZWrm6OHPrrBfMabDs6NxPiQOkNDe7PWxn9loJaiDcfomTd/KDOTk8ozJS+QzfkSs9a9hUKKW8u5UuwKeZ8MZyaRv46kaUo23S8yqT24urYHwyxvGwyGLc6+oF0AsXzl5QLQlzk2wthsjLRZWs8= 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=209.85.167.197 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-oi1-f197.google.com with SMTP id 5614622812f47-4514cb26767so300400b6e.1 for ; Wed, 03 Dec 2025 17:21:05 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1764811265; x=1765416065; 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=CiyA4BsvKpdDe/wb+UstNj8L9RhhCP0Ealq39FLJ2X4=; b=oihMNCPPMcMptB5sdN2IqMVC8aywZ1lZKHsZjbEEIWnxevRkRCbfFHqjGyI3wwidT4 AfiVN6Ml6jK1xyY4QpnQ0ilEQ62HF7w15yr6U2ixXsZRGj6IsZK7/mAUEgPQovHPEcLn /Tc0G7HwmnmJxjXQ2U+d13QfJgY3/lAIEqGjQ5/SLPx5dg6/XHmE7n+ZSQHnrz3DI3FF WvoKK0USjBAZiKhDbrx5bMFfqlShq6MuhWkh0TRr9HCSHntUwzjL/jymfEHuYR0PX8wY MCckj9DhjCnb1QkJGrGoMzeb7Pdn8w9tMHDeGyA2Wdd19jACvHtYHzE/g/Q4bxiNiGNA NWLg== X-Forwarded-Encrypted: i=1; AJvYcCXbe+pH4LfgiAaqM8sHF/LzeZWtc5N3E4NU6ltCHSbQ6WPvJCdZcrIKInwxjkDrgzCML8I/8Wr/6+C/+kQ=@vger.kernel.org X-Gm-Message-State: AOJu0Yzm5rFoHJ2SPJCEA+LECfRLP5nq/ZMtcuOE4Sr0huLAU7JRMjq5 8d4Z6V0XUnHCjlcDHj3WjwRCKFN33Bp1D/aJWF1st7hnCCfnxptoFS/k/4PNQkWGYeFZ3jf4TIP YGeo+jDZr1s3LSxvcMERyV2AVTqWZNcuHE+HRljNoDBAcR5UmBoiGfVZXePw= X-Google-Smtp-Source: AGHT+IGR6yzN8/gTaXDLHIZCWPMzJY+8/LoYxKW5pQ87fDfFBQvXhn8k6gO3O1NINCmYw1AcqzMIc2QLuA5jADlGeMLkm4t6Jhtj Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1b07:b0:453:50af:c463 with SMTP id 5614622812f47-4536e51a345mr2347095b6e.41.1764811264789; Wed, 03 Dec 2025 17:21:04 -0800 (PST) Date: Wed, 03 Dec 2025 17:21:04 -0800 In-Reply-To: <6w4u7ysv6yxdqu3c5ug7pjbbwxlmczwgewukqyrap3ltpazp4s@ozir7zbfyvfj> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6930e200.a70a0220.d98e3.01bd.GAE@google.com> Subject: Re: [syzbot] [exfat?] [ocfs2?] kernel BUG in link_path_walk From: syzbot To: brauner@kernel.org, jack@suse.cz, jlbec@evilplan.org, joseph.qi@linux.alibaba.com, linkinjeon@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mark@fasheh.com, mjguzik@gmail.com, ocfs2-devel@lists.linux.dev, sj1557.seo@samsung.com, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: kernel BUG in link_path_walk (syz.0.73,6964,1):ocfs2_find_entry_id:420 ERROR: status = -30 ------------[ cut here ]------------ kernel BUG at fs/namei.c:2532! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 6964 Comm: syz.0.73 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:link_path_walk+0x1a57/0x1a90 fs/namei.c:2532 Code: 89 e9 80 e1 07 fe c1 38 c1 0f 8c be fd ff ff 4c 89 ef e8 2c e5 e9 ff e9 b1 fd ff ff e8 62 90 83 ff 90 0f 0b e8 5a 90 83 ff 90 <0f> 0b e8 52 90 83 ff 90 0f 0b e8 4a 90 83 ff 4c 89 ff 48 c7 c6 40 RSP: 0018:ffffc9000491f8a0 EFLAGS: 00010293 RAX: ffffffff823e22d6 RBX: dffffc0000000000 RCX: ffff8880250f3d00 RDX: 0000000000000000 RSI: 0000000000008000 RDI: 0000000000004000 RBP: ffff888079181120 R08: ffff8880299ef520 R09: ffff88807acd2000 R10: ffff8880299ef520 R11: ffff88807acd2000 R12: ffffc9000491fc58 R13: ffffc9000491fc28 R14: 0000000000008000 R15: 0000000000100000 FS: 00007ff92e2e36c0(0000) GS:ffff888125f49000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555575344808 CR3: 0000000025c92000 CR4: 00000000003526f0 Call Trace: path_openat+0x2b3/0x3dd0 fs/namei.c:4787 do_filp_open+0x1fa/0x410 fs/namei.c:4818 do_sys_openat2+0x121/0x200 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_open fs/open.c:1444 [inline] __se_sys_open fs/open.c:1440 [inline] __x64_sys_open+0x11e/0x150 fs/open.c:1440 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff92d38f749 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:00007ff92e2e3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007ff92d5e5fa0 RCX: 00007ff92d38f749 RDX: 0000000000000000 RSI: 0000000000145142 RDI: 0000200000000240 RBP: 00007ff92d413f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff92d5e6038 R14: 00007ff92d5e5fa0 R15: 00007ffda4bd0278 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:link_path_walk+0x1a57/0x1a90 fs/namei.c:2532 Code: 89 e9 80 e1 07 fe c1 38 c1 0f 8c be fd ff ff 4c 89 ef e8 2c e5 e9 ff e9 b1 fd ff ff e8 62 90 83 ff 90 0f 0b e8 5a 90 83 ff 90 <0f> 0b e8 52 90 83 ff 90 0f 0b e8 4a 90 83 ff 4c 89 ff 48 c7 c6 40 RSP: 0018:ffffc9000491f8a0 EFLAGS: 00010293 RAX: ffffffff823e22d6 RBX: dffffc0000000000 RCX: ffff8880250f3d00 RDX: 0000000000000000 RSI: 0000000000008000 RDI: 0000000000004000 RBP: ffff888079181120 R08: ffff8880299ef520 R09: ffff88807acd2000 R10: ffff8880299ef520 R11: ffff88807acd2000 R12: ffffc9000491fc58 R13: ffffc9000491fc28 R14: 0000000000008000 R15: 0000000000100000 FS: 00007ff92e2e36c0(0000) GS:ffff888125e49000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1310116e9c CR3: 0000000025c92000 CR4: 00000000003526f0 Tested on: commit: b2c27842 Add linux-next specific files for 20251203 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=15d7801a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=caadf525b0ab8d17 dashboard link: https://syzkaller.appspot.com/bug?extid=d222f4b7129379c3d5bc 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=1281d4c2580000