Hello, syzbot found the following issue on: HEAD commit: e88c4cfcb7b8 Merge tag 'for-6.9-rc5-tag' of git://git.kern.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=12fbc980980000 kernel config: https://syzkaller.appspot.com/x/.config?x=776c05250f36d55c dashboard link: https://syzkaller.appspot.com/bug?extid=eaba5abe296837a640c0 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=13e2cd27180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1741a028980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/76771e00ba79/disk-e88c4cfc.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c957ed943a4f/vmlinux-e88c4cfc.xz kernel image: https://storage.googleapis.com/syzbot-assets/e719306ed8e3/bzImage-e88c4cfc.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/9d3c2a1fa449/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+eaba5abe296837a640c0@xxxxxxxxxxxxxxxxxxxxxxxxx EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs warning (device loop0): __ext4fs_dirhash:270: inode #12: comm syz-executor253: Siphash requires key ===================================================== BUG: KMSAN: uninit-value in ext4_inlinedir_to_tree+0xde2/0x15a0 fs/ext4/inline.c:1415 ext4_inlinedir_to_tree+0xde2/0x15a0 fs/ext4/inline.c:1415 ext4_htree_fill_tree+0x1941/0x1cd0 fs/ext4/namei.c:1210 ext4_dx_readdir fs/ext4/dir.c:597 [inline] ext4_readdir+0x4bbf/0x5b00 fs/ext4/dir.c:142 iterate_dir+0x688/0x870 fs/readdir.c:110 __do_sys_getdents64 fs/readdir.c:409 [inline] __se_sys_getdents64+0x169/0x530 fs/readdir.c:394 __x64_sys_getdents64+0x96/0xe0 fs/readdir.c:394 x64_sys_call+0x343d/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:218 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable hinfo created at: ext4_htree_fill_tree+0x52/0x1cd0 fs/ext4/namei.c:1185 ext4_dx_readdir fs/ext4/dir.c:597 [inline] ext4_readdir+0x4bbf/0x5b00 fs/ext4/dir.c:142 CPU: 1 PID: 5020 Comm: syz-executor253 Not tainted 6.9.0-rc5-syzkaller-00042-ge88c4cfcb7b8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ===================================================== --- 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
