[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.38' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 198.451820][ T8401] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88810184c200 (size 120): comm "kworker/u4:5", pid 995, jiffies 4294956488 (age 8.360s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000005c89b216>] alloc_pid+0x66/0x560 [<00000000a9e30ab6>] copy_process+0x143b/0x25c0 [<000000002eb76b05>] kernel_clone+0xf3/0x670 [<0000000097da9736>] kernel_thread+0x61/0x80 [<000000003cdf178e>] call_usermodehelper_exec_work+0xc4/0x120 [<00000000c4c11511>] process_one_work+0x2c9/0x600 [<000000003cc14e9e>] worker_thread+0x59/0x5d0 [<000000002a667f23>] kthread+0x178/0x1b0 [<00000000db76ae98>] ret_from_fork+0x1f/0x30