Hello, syzbot found the following issue on: HEAD commit: 052d534373b7 Merge tag 'exfat-for-6.8-rc1' of git://git.ke.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=140a08b3e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=36f64072074e3eab dashboard link: https://syzkaller.appspot.com/bug?extid=ab18fa9c959320611727 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15b39935e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10d619f5e80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/395e14e0d581/disk-052d5343.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d3c73d08be99/vmlinux-052d5343.xz kernel image: https://storage.googleapis.com/syzbot-assets/80968415c40b/bzImage-052d5343.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/d58cff47d922/mount_0.gz Bisection is inconclusive: the issue happens on the oldest tested release. bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=142eec2be80000 final oops: https://syzkaller.appspot.com/x/report.txt?x=162eec2be80000 console output: https://syzkaller.appspot.com/x/log.txt?x=122eec2be80000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ab18fa9c959320611727@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 109 at fs/jfs/jfs_dmap.c:2879 dbAdjTree+0x2d9/0x3d0 fs/jfs/jfs_dmap.c:2879 Modules linked in: CPU: 0 PID: 109 Comm: jfsCommit Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:dbAdjTree+0x2d9/0x3d0 fs/jfs/jfs_dmap.c:2879 Code: e8 4c 13 8d fe 0f b6 14 24 38 da 0f 85 a1 fe ff ff 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f e9 7d 18 8d fe e8 78 18 8d fe 90 <0f> 0b 90 eb e2 e8 0d 8f e4 fe e9 52 fe ff ff e8 03 8f e4 fe e9 79 RSP: 0018:ffffc900020bfa88 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000155 RCX: ffffffff82faf5c9 RDX: ffff8880197f3b80 RSI: ffffffff82faf828 RDI: 0000000000000004 RBP: ffff8880231c4010 R08: 0000000000000004 R09: 0000000000000155 R10: 0000000000030056 R11: ffffffff8acf1fa0 R12: 0000000000000004 R13: 0000000000030056 R14: ffff8880231c4010 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f67c3d5d130 CR3: 000000000cf79000 CR4: 0000000000350ef0 Call Trace: <TASK> dbJoin+0x267/0x2c0 fs/jfs/jfs_dmap.c:2847 dbFreeBits+0x15c/0x8f0 fs/jfs/jfs_dmap.c:2338 dbFreeDmap+0x62/0x1a0 fs/jfs/jfs_dmap.c:2087 dbFree+0x266/0x550 fs/jfs/jfs_dmap.c:409 txFreeMap+0x9a9/0xe60 fs/jfs/jfs_txnmgr.c:2534 txUpdateMap+0x3f1/0xd10 fs/jfs/jfs_txnmgr.c:2330 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline] jfs_lazycommit+0x5e4/0xb20 fs/jfs/jfs_txnmgr.c:2733 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 </TASK> --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title 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. 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
