From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f207.google.com (mail-il1-f207.google.com [209.85.166.207]) (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 C27E9155A30 for ; Wed, 20 Aug 2025 23:50:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755733839; cv=none; b=upH//AAB/KUMGtPsZmtCnFCIjqGOfXZDNOjyhgfSIWKuX2oqWz+8Gwh+X+wJqS0H/ERSws7j4KoFL7LZjBpba3ZS8mcJg9AYK6VzJAbBP5D1bIBeSnTL5DAzkyLEGZlyak5hyywKwg0TQBdkRgj7xnG+vWL8WsQ5C7LS2UbMiZE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755733839; c=relaxed/simple; bh=+3KoXlNx3WrWJ/5JsMCHdKN2i6P9n/O4aCtS23ojPU8=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=npU6f18Qzfabhj++ulyApgzN/jIVSZcD+Bid8Klxbet1aSb+KNtNujK3HPt9wnF230PhCv5kyrqEJ8hnXiFQ5H/skfyZ+Uz/USzz6wWtVHZIN7UOew/KT4Fzxp5urLu49uzzh1jXeC10QWuYjgC4rcS07Kyw7+55We3XMAc2k+k= 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=209.85.166.207 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-f207.google.com with SMTP id e9e14a558f8ab-3e6649d783bso8148085ab.3 for ; Wed, 20 Aug 2025 16:50:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755733836; x=1756338636; 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=D086v0Rs3v+RLCz3bkRMPpZaf+JhG94433lHZdw/Rts=; b=r7piSyFQzjIqiEjPuN6KoDdaiq9iN3migl86Nb33uoWK5eE/ROcIoaoPcG2aLwokCy ruQEogb3wwHXPDfcnmWpvf1f6G76ED86zid66MPbzvFb9EZV0PhvQw/BrfI7vWfBhJb7 nExqxwLI48kfdYitCRVpYeIxX4+1IwBNpL+yeffuMBm2CZciI43V4hlrGcCy83EDxcWg WT54mwh0749Y0bLDI+tzh0R2XQ2u8rDyZiS5klEeKqyx404GxqWkGFLT4yGgaDZRbB9y D7Lt2hCupP06B0KS7LttzHMWEVej2FU8V1yfLOHI27OgLAKyhCGUKKgp+2x4Qexs+uGN r9lQ== X-Forwarded-Encrypted: i=1; AJvYcCVlhYG0pMm+q4hXRchkyd8Pj5sf1sILgJg8gh9rQRzu7LRL/QVjQ7rhf5RNblgezHYxgTLe@lists.linux.dev X-Gm-Message-State: AOJu0YzZglC52I3yQU7TaNopRkRzd5fwH2VJ5Dq13dVlSRHmkIX74kSy HCb7H5ueXx+W9XPdDcnZj72pwsYYVScM+Ne0E0FQRPazbpoBxBp16da0EHLebNrkidjKHG56o+q Wbpd6NX42JyDd2qdo9SRoLAXE10xfynZGd5f1SzkSa+490HFBPhqJk2bn5fc= X-Google-Smtp-Source: AGHT+IEol/67olrEtfvGrg4UJl8gG4giFewisK5YgIL16sHEbuUOlPsTM4sjoEl1wJKuqaDR6qQEVAU25iyh8ZzTgJ+xBBS2bSV9 Precedence: bulk X-Mailing-List: gfs2@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3e89:b0:3e5:6313:4562 with SMTP id e9e14a558f8ab-3e6d69d9a48mr7400695ab.14.1755733835907; Wed, 20 Aug 2025 16:50:35 -0700 (PDT) Date: Wed, 20 Aug 2025 16:50:35 -0700 In-Reply-To: <684c0d76.050a0220.be214.029f.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68a65f4b.050a0220.3d78fd.000f.GAE@google.com> Subject: Re: [syzbot] [gfs2?] kernel BUG in gfs2_jindex_free (2) From: syzbot To: agruenba@redhat.com, gfs2@lists.linux.dev, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: 5303936d609e Add linux-next specific files for 20250820 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=16775442580000 kernel config: https://syzkaller.appspot.com/x/.config?x=4602df3fd8f406ec dashboard link: https://syzkaller.appspot.com/bug?extid=150563285f78ac3e9bd4 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17e597a2580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/57c3527e418a/disk-5303936d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7f1e146ea30f/vmlinux-5303936d.xz kernel image: https://storage.googleapis.com/syzbot-assets/55bebb5dd947/bzImage-5303936d.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/5e2270ee146f/mount_0.gz fsck result: OK (log: https://syzkaller.appspot.com/x/fsck.log?x=159c16f0580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+150563285f78ac3e9bd4@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at fs/gfs2/super.c:76! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 7296 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:gfs2_jindex_free+0x43e/0x440 fs/gfs2/super.c:76 Code: cc cc cc cc cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c ea fd ff ff e8 22 e7 25 fe e9 e0 fd ff ff e8 88 e4 7f 07 e8 b3 1f c2 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 RSP: 0018:ffffc9000b737a40 EFLAGS: 00010293 RAX: ffffffff83fda7cd RBX: dead000000000122 RCX: ffff88802c6c9e00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff RBP: ffffc9000b737b00 R08: ffff888078520de7 R09: 1ffff1100f0a41bc R10: dffffc0000000000 R11: ffffed100f0a41bd R12: ffff8880785208b0 R13: dffffc0000000000 R14: ffff888033122800 R15: ffff888033122878 FS: 0000000000000000(0000) GS:ffff888125a05000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff329e51000 CR3: 0000000030646000 CR4: 00000000003526f0 Call Trace: gfs2_put_super+0x8af/0x950 fs/gfs2/super.c:636 generic_shutdown_super+0x132/0x2c0 fs/super.c:643 kill_block_super+0x44/0x90 fs/super.c:1723 deactivate_locked_super+0xbc/0x130 fs/super.c:474 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1375 task_work_run+0x1d1/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x6b5/0x2300 kernel/exit.c:961 do_group_exit+0x21c/0x2d0 kernel/exit.c:1102 __do_sys_exit_group kernel/exit.c:1113 [inline] __se_sys_exit_group kernel/exit.c:1111 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1111 x64_sys_call+0x21f7/0x2200 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fed18f8ebe9 Code: Unable to access opcode bytes at 0x7fed18f8ebbf. RSP: 002b:00007ffc2c3ee178 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fed19011c2a RCX: 00007fed18f8ebe9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000005 R08: 00007ffc2c3ebf17 R09: 00007ffc2c3ef3d0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc2c3ef3d0 R13: 00007fed19011c05 R14: 0000000000053df0 R15: 00007ffc2c3ef410 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:gfs2_jindex_free+0x43e/0x440 fs/gfs2/super.c:76 Code: cc cc cc cc cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c ea fd ff ff e8 22 e7 25 fe e9 e0 fd ff ff e8 88 e4 7f 07 e8 b3 1f c2 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 RSP: 0018:ffffc9000b737a40 EFLAGS: 00010293 RAX: ffffffff83fda7cd RBX: dead000000000122 RCX: ffff88802c6c9e00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff RBP: ffffc9000b737b00 R08: ffff888078520de7 R09: 1ffff1100f0a41bc R10: dffffc0000000000 R11: ffffed100f0a41bd R12: ffff8880785208b0 R13: dffffc0000000000 R14: ffff888033122800 R15: ffff888033122878 FS: 0000000000000000(0000) GS:ffff888125b05000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fece4332000 CR3: 00000000584a4000 CR4: 00000000003526f0 --- 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.