[ 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 '10.128.1.34' (ECDSA) to the list of known hosts. executing program executing program executing program executing program syzkaller login: [ 78.018942][ T8412] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) [ 83.018178][ T8412] kmemleak: 5 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88810183d540 (size 168): comm "kworker/u4:4", pid 3058, jiffies 4294944447 (age 13.330s) hex dump (first 32 bytes): 02 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: [] prepare_creds+0x27/0x410 [] copy_creds+0x3a/0x230 [] copy_process+0x6cd/0x25e0 [] kernel_clone+0xf3/0x670 [] kernel_thread+0x61/0x80 [] call_usermodehelper_exec_work+0xc4/0x120 [] process_one_work+0x2c9/0x600 [] worker_thread+0x59/0x5d0 [] kthread+0x178/0x1b0 [] ret_from_fork+0x1f/0x30 BUG: memory leak unreferenced object 0xffff888101066c00 (size 120): comm "kworker/u4:4", pid 3058, jiffies 4294944447 (age 13.330s) 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: [] alloc_pid+0x66/0x560 [] copy_process+0x1465/0x25e0 [] kernel_clone+0xf3/0x670 [] kernel_thread+0x61/0x80 [] call_usermodehelper_exec_work+0xc4/0x120 [] process_one_work+0x2c9/0x600 [] worker_thread+0x59/0x5d0 [] kthread+0x178/0x1b0 [] ret_from_fork+0x1f/0x30 BUG: memory leak unreferenced object 0xffff8881016de100 (size 232): comm "kworker/u4:4", pid 8422, jiffies 4294944447 (age 13.330s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 60 3e ca 02 81 88 ff ff 00 ec 4e 0f 81 88 ff ff `>........N..... backtrace: [] __alloc_file+0x1f/0xf0 [] alloc_empty_file+0x69/0x120 [] alloc_file+0x33/0x1b0 [] alloc_file_pseudo+0xb2/0x140 [] create_pipe_files+0x138/0x2e0 [] umd_setup+0x33/0x220 [] call_usermodehelper_exec_async+0xb4/0x1b0 [] ret_from_fork+0x1f/0x30 BUG: memory leak unreferenced object 0xffff88810eb61498 (size 24): comm "kworker/u4:4", pid 8422, jiffies 4294944447 (age 13.330s) hex dump (first 24 bytes): 00 00 00 00 00 00 00 00 b0 0e 94 00 81 88 ff ff ................ 00 00 00 00 00 00 00 00 ........ backtrace: [] security_file_alloc+0x2a/0xb0 [] __alloc_file+0x5d/0xf0 [] alloc_empty_file+0x69/0x120 [] alloc_file+0x33/0x1b0 [] alloc_file_pseudo+0xb2/0x140 [] create_pipe_files+0x138/0x2e0 [] umd_setup+0x33/0x220 [] call_usermodehelper_exec_async+0xb4/0x1b0 [] ret_from_fork+0x1f/0x30 BUG: memory leak unreferenced object 0xffff888111e46400 (size 232): comm "kworker/u4:4", pid 8422, jiffies 4294944447 (age 13.330s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 60 3e ca 02 81 88 ff ff 00 29 7d 0f 81 88 ff ff `>.......)}..... backtrace: [] __alloc_file+0x1f/0xf0 [] alloc_empty_file+0x69/0x120 [] alloc_file+0x33/0x1b0 [] alloc_file_clone+0x22/0x70 [] create_pipe_files+0x182/0x2e0 [] umd_setup+0xad/0x220 [] call_usermodehelper_exec_async+0xb4/0x1b0 [] ret_from_fork+0x1f/0x30