From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f77.google.com (mail-ot1-f77.google.com [209.85.210.77]) (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 EB57437DADB for ; Thu, 14 May 2026 10:36:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778754995; cv=none; b=CrYuGnUJOkc/2UCUUBbOqXVI0NJJb8NkElQXQqob3sEDgUOLaWBw7zsYqm6cOj5MjIRa/AApMkSyp0QrQU1ozDx7gN+pQHbEklRNb4bPEbtoLCtkTM8cDt40nHGKxd/lFyC7o7szRokm+jMVAcBOr/Prxgzbi9Br2tWGCuH7A2Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778754995; c=relaxed/simple; bh=7p07p8olTrRR9hXVx5bqHxja1xg1M8laycKTdvm0FiQ=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=bDOUUNeq7Iq7nAjYjkjdzTwnH2vtsqoBe4BzqGVof3wbftfHkmVhOURFhsW6HSRUmtTTcIsbDbUU2IS4FOOvhmlUHlLgmK2frpf60hH2pqkgejwVcUhtC2WDKc01ybqul+IS98wd+ARF4S6RMZldNkAH2+bzPBuMbsaym2QZr9I= 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=209.85.210.77 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-ot1-f77.google.com with SMTP id 46e09a7af769-7e3a338673eso7734584a34.0 for ; Thu, 14 May 2026 03:36:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778754992; x=1779359792; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=UlvSNKjbi4h9AyK/26o6X58k+tN0xU95kL5en3vMYE4=; b=OfSjbi+do2Foy2pVNGB2ufuhJML22pWuEX61d4OoH7zacTLGwbvdDX+jvvxkq67BdU 8clDTj+KQHtvZGn/TV/kJmMHbsjMCILZHub82OLdx6q7zZ3yD8RwLGEBSkn6/AhfHFs7 pqv5ULkFexaZvxGtJ/v+Xs4YcbbcCiFqhxigt7Ri/Gd/EAMWwG4lpaddmxZVBb4SZT1v q6nd8aXihSQEvSm9hZsAiiH3vKbPgEsIeFyvJGha+kWHxaQTqPQEe4sVq2CgNtihMwnd zwYxvfFJvhgn3y9sZ4n78k2bSqw2Z7q1SeBRgXsDcMxsTurNk4wiL98eMLSTw9ZWj4UM YZdA== X-Forwarded-Encrypted: i=1; AFNElJ+F3174oOEKEmtw2vn+jji2yuCMG4H2PqxUjgxNDgbz7XXron+iDxRuJVHkPtEEDls5NwoyvXsSPQ0KSQg=@vger.kernel.org X-Gm-Message-State: AOJu0YxmtnNfB2BRSrLw9DH5mdT0SDmR5Q/m49aIropC3xmNLcQxY3lt zSToEQzFtSEnl7NvyOIHYebMCmlSBVFGdHtpmX4dsT9KsrozGSUfeThKI7HKE7SS6+AxtkWrMeO u371NDAU6tXkQfBy358766QCK0Ut6tBDum+9JQj/t5wBRAzPVExETvHsF4DU= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:7402:b0:696:6229:99b with SMTP id 006d021491bc7-69b8803dbaamr1347669eaf.16.1778754992726; Thu, 14 May 2026 03:36:32 -0700 (PDT) Date: Thu, 14 May 2026 03:36:32 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a05a5b0.170a0220.290639.01c7.GAE@google.com> Subject: [syzbot] [karma?] kernel BUG in folio_set_bh (3) From: syzbot To: jfs-discussion@lists.sourceforge.net, linux-karma-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, me@bobcopeland.com, shaggy@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 1d5dcaa3bd65 Merge tag 'probes-fixes-v7.1-rc3' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1592ed06580000 kernel config: https://syzkaller.appspot.com/x/.config?x=7f195f6be48c12ec dashboard link: https://syzkaller.appspot.com/bug?extid=32ec8b5bd050c78741c2 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-1d5dcaa3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/2cb31960a181/vmlinux-1d5dcaa3.xz kernel image: https://storage.googleapis.com/syzbot-assets/6d3969d0ce3d/bzImage-1d5dcaa3.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+32ec8b5bd050c78741c2@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 2048 loop0: p2 p3 < > p4 < p5 > loop0: partition table partially beyond EOD, truncated loop0: p3 start 4284289 is beyond EOD, truncated jfs: block size(32768) > page size(4096) not supported by filesystem ------------[ cut here ]------------ kernel BUG at fs/buffer.c:1479! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5328 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:folio_set_bh+0x1dc/0x1e0 fs/buffer.c:1479 Code: 4c 89 e2 e8 b6 71 98 02 e9 42 ff ff ff e8 3c 80 6d ff 48 89 df 48 c7 c6 00 28 df 8b e8 6d bd cf fe 90 0f 0b e8 25 80 6d ff 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f RSP: 0018:ffffc9000e2378f0 EFLAGS: 00010287 RAX: ffffffff8258511b RBX: ffffea0000391600 RCX: 0000000000100000 RDX: ffffc9000ec4a000 RSI: 0000000000001a43 RDI: 0000000000001a44 RBP: dffffc0000000000 R08: ffffea0000391607 R09: 1ffffd40000722c0 R10: dffffc0000000000 R11: fffff940000722c1 R12: 0000000000000003 R13: 0000000000008000 R14: ffff88804789f740 R15: 0000000000008000 FS: 00007fb7faee76c0(0000) GS:ffff88808c881000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f86657e22b0 CR3: 00000000128ba000 CR4: 0000000000352ef0 Call Trace: folio_alloc_buffers+0x228/0x640 fs/buffer.c:849 grow_dev_folio fs/buffer.c:979 [inline] grow_buffers fs/buffer.c:1020 [inline] __getblk_slow fs/buffer.c:1038 [inline] bdev_getblk+0x2cb/0x6e0 fs/buffer.c:1358 __bread_gfp+0x89/0x3b0 fs/buffer.c:1412 sb_bread include/linux/buffer_head.h:346 [inline] readSuper+0xdb/0x270 fs/jfs/jfs_mount.c:462 chkSuper+0x5d/0xe00 fs/jfs/jfs_mount.c:299 jfs_mount+0x4b/0x870 fs/jfs/jfs_mount.c:83 jfs_fill_super+0x6bc/0xd80 fs/jfs/super.c:523 get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694 vfs_get_tree+0x92/0x2a0 fs/super.c:1754 fc_mount fs/namespace.c:1193 [inline] do_new_mount_fc fs/namespace.c:3758 [inline] do_new_mount+0x341/0xd30 fs/namespace.c:3834 do_mount fs/namespace.c:4167 [inline] __do_sys_mount fs/namespace.c:4383 [inline] __se_sys_mount+0x31d/0x420 fs/namespace.c:4360 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb7f9f9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb7faee6fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fb7fa215fa0 RCX: 00007fb7f9f9ce59 RDX: 0000200000000040 RSI: 0000200000000140 RDI: 0000200000000080 RBP: 00007fb7fa032d6f R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000c000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb7fa216038 R14: 00007fb7fa215fa0 R15: 00007ffff2e0f5c8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_set_bh+0x1dc/0x1e0 fs/buffer.c:1479 Code: 4c 89 e2 e8 b6 71 98 02 e9 42 ff ff ff e8 3c 80 6d ff 48 89 df 48 c7 c6 00 28 df 8b e8 6d bd cf fe 90 0f 0b e8 25 80 6d ff 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f RSP: 0018:ffffc9000e2378f0 EFLAGS: 00010287 RAX: ffffffff8258511b RBX: ffffea0000391600 RCX: 0000000000100000 RDX: ffffc9000ec4a000 RSI: 0000000000001a43 RDI: 0000000000001a44 RBP: dffffc0000000000 R08: ffffea0000391607 R09: 1ffffd40000722c0 R10: dffffc0000000000 R11: fffff940000722c1 R12: 0000000000000003 R13: 0000000000008000 R14: ffff88804789f740 R15: 0000000000008000 FS: 00007fb7faee76c0(0000) GS:ffff88808c881000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8a5bc8038f CR3: 00000000128ba000 CR4: 0000000000352ef0 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup