#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git bugfix/syzbot
On 2026/3/4 06:25, syzbot wrote:
Hello, syzbot found the following issue on: HEAD commit: af4e9ef3d784 uaccess: Fix scoped_user_read_access() for 'p.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12506d5a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=2c6ad6fefffa76b1 dashboard link: https://syzkaller.appspot.com/bug?extid=cf7946ab25b21abc4b66 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=160a18d6580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14e2b0ba580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/70cb2ebe1e6e/disk-af4e9ef3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/945fea3c8a6d/vmlinux-af4e9ef3.xz kernel image: https://storage.googleapis.com/syzbot-assets/fa6a6a5cbcc8/bzImage-af4e9ef3.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/c12ae92fa9b6/mount_0.gz fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=10e1d202580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: [email protected] BUG: memory leak unreferenced object 0xffff888127f70830 (size 16): comm "syz.0.23", pid 6144, jiffies 4294943712 hex dump (first 16 bytes): 3c af 57 72 5b e6 8f ad 6e 8e fd 33 42 39 03 ff <.Wr[...n..3B9.. backtrace (crc 925f8a80): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4520 [inline] slab_alloc_node mm/slub.c:4844 [inline] __do_kmalloc_node mm/slub.c:5237 [inline] __kmalloc_noprof+0x3bd/0x560 mm/slub.c:5250 kmalloc_noprof include/linux/slab.h:954 [inline] fscrypt_setup_filename+0x15e/0x3b0 fs/crypto/fname.c:364 f2fs_setup_filename+0x52/0xb0 fs/f2fs/dir.c:143 f2fs_rename+0x159/0xca0 fs/f2fs/namei.c:961 f2fs_rename2+0xd5/0xf20 fs/f2fs/namei.c:1308 vfs_rename+0x7ff/0x1250 fs/namei.c:6026 filename_renameat2+0x4f4/0x660 fs/namei.c:6144 __do_sys_renameat2 fs/namei.c:6173 [inline] __se_sys_renameat2 fs/namei.c:6168 [inline] __x64_sys_renameat2+0x59/0x80 fs/namei.c:6168 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF --- 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 [email protected]. 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
