Hello, syzbot found the following issue on: HEAD commit: 861deac3b092 Linux 6.7-rc7 git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=16e0171ae80000 kernel config: https://syzkaller.appspot.com/x/.config?x=e0c7078a6b901aa3 dashboard link: https://syzkaller.appspot.com/bug?extid=d31185aa54170f7fc1f5 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17561579e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1277e7a5e80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0ea60ee8ed32/disk-861deac3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6d69fdc33021/vmlinux-861deac3.xz kernel image: https://storage.googleapis.com/syzbot-assets/f0158750d452/bzImage-861deac3.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/f35551f8a991/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d31185aa54170f7fc1f5@xxxxxxxxxxxxxxxxxxxxxxxxx ======================================================= UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ===================================================== BUG: KMSAN: uninit-value in crc_itu_t_byte include/linux/crc-itu-t.h:22 [inline] BUG: KMSAN: uninit-value in crc_itu_t+0x287/0x2e0 lib/crc-itu-t.c:60 crc_itu_t_byte include/linux/crc-itu-t.h:22 [inline] crc_itu_t+0x287/0x2e0 lib/crc-itu-t.c:60 udf_update_tag+0x5c/0x2a0 fs/udf/misc.c:261 udf_rename+0x13dd/0x16a0 fs/udf/namei.c:877 vfs_rename+0x1a79/0x1fa0 fs/namei.c:4844 do_renameat2+0x1571/0x1ca0 fs/namei.c:4996 __do_sys_rename fs/namei.c:5042 [inline] __se_sys_rename fs/namei.c:5040 [inline] __x64_sys_rename+0xec/0x140 fs/namei.c:5040 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Local variable diriter created at: udf_rename+0xbb/0x16a0 fs/udf/namei.c:768 vfs_rename+0x1a79/0x1fa0 fs/namei.c:4844 CPU: 0 PID: 5011 Comm: syz-executor409 Not tainted 6.7.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 ===================================================== --- 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. 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
