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AFNElJ80NUqEYXSSyKq7kPyULXPhSXNg1zbyFd+e73U3saWZN/sB0bvIQ3cVnYTATLXwzOA98zvDZlBk9elLVhg=@vger.kernel.org X-Gm-Message-State: AOJu0Yzm7JU2jO1l5uzrybVY23Y0KKI0XIu3v+VqDVzFgJtgH2iupi3w CvFEX9q65JunbXlt/Eoj1N0ohKIcagj8lpofZrrD8wRZqJWg3k4feD7k1GTTVdYvVessBBE4euQ s/wMlgq1U9uDJZtlLA4I9EO+bZxgDAfMSzAAYz24TboopdXKtd/jI6C0Ik80= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1442:b0:47c:3c56:c96c with SMTP id 5614622812f47-4896ac90d73mr10818584b6e.39.1782105265082; Sun, 21 Jun 2026 22:14:25 -0700 (PDT) Date: Sun, 21 Jun 2026 22:14:25 -0700 In-Reply-To: <6a3188af.d1b4d54b.11ef78.0029.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a38c4b1.79454dbe.1f5803.0001.GAE@google.com> Subject: Re: [syzbot] [jfs?] WARNING in dbJoin From: syzbot To: jfs-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, shaggy@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: 8cd8cf7a07e5 Merge tag 'scsi-misc' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=161d7986580000 kernel config: https://syzkaller.appspot.com/x/.config?x=bef29eb7c0231032 dashboard link: https://syzkaller.appspot.com/bug?extid=a67911c5a11315aa55a8 compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13d192ae580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13e4ebd2580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/44ae1033ac25/disk-8cd8cf7a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0313654a1152/vmlinux-8cd8cf7a.xz kernel image: https://storage.googleapis.com/syzbot-assets/5d7e766b746c/bzImage-8cd8cf7a.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/67fe0f2cf90c/mount_0.gz fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=15d192ae580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a67911c5a11315aa55a8@syzkaller.appspotmail.com ------------[ cut here ]------------ lp >= size || lp < 0 WARNING: fs/jfs/jfs_dmap.c:2962 at dbAdjTree fs/jfs/jfs_dmap.c:2962 [inline], CPU#1: jfsCommit/116 WARNING: fs/jfs/jfs_dmap.c:2962 at dbJoin+0xc33/0xd60 fs/jfs/jfs_dmap.c:2930, CPU#1: jfsCommit/116 Modules linked in: CPU: 1 UID: 0 PID: 116 Comm: jfsCommit Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:dbAdjTree fs/jfs/jfs_dmap.c:2962 [inline] RIP: 0010:dbJoin+0xc33/0xd60 fs/jfs/jfs_dmap.c:2930 Code: eb 0c e8 50 6a 61 fe eb 05 e8 49 6a 61 fe 31 c0 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8f 76 ab fd cc e8 2e 6a 61 fe 90 <0f> 0b 90 eb df 44 89 e9 80 e1 07 38 c1 0f 8c 00 f4 ff ff 4c 89 ef RSP: 0018:ffffc90002d9f5b0 EFLAGS: 00010293 RAX: ffffffff8364ca82 RBX: 0000000000000155 RCX: ffff88801e39be00 RDX: 0000000000000000 RSI: 0000000000000155 RDI: 0000000000020056 RBP: 0000000000000004 R08: ffffea0001d26547 R09: 1ffffd40003a4ca8 R10: dffffc0000000000 R11: fffff940003a4ca9 R12: dffffc0000000000 R13: ffff888074995020 R14: 0000000000020056 R15: 0000000000000004 FS: 0000000000000000(0000) GS:ffff888125353000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9e6fe142b8 CR3: 000000000e746000 CR4: 0000000000350ef0 Call Trace: dbFreeBits+0x4a2/0xd70 fs/jfs/jfs_dmap.c:2427 dbFreeDmap fs/jfs/jfs_dmap.c:2176 [inline] dbFree+0x324/0x650 fs/jfs/jfs_dmap.c:485 txFreeMap+0x9e6/0xde0 fs/jfs/jfs_txnmgr.c:2517 xtTruncate+0xd16/0x2eb0 fs/jfs/jfs_xtree.c:2481 jfs_free_zero_link+0x35b/0x4c0 fs/jfs/namei.c:760 jfs_evict_inode+0x356/0x430 fs/jfs/inode.c:159 evict+0x624/0xb50 fs/inode.c:828 txLazyCommit fs/jfs/jfs_txnmgr.c:2666 [inline] jfs_lazycommit+0x44c/0xac0 fs/jfs/jfs_txnmgr.c:2735 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- 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.