[ 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 '10.128.10.13' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 68.475192][ T8427] netlink: 'syz-executor036': attribute type 4 has an invalid length. executing program [ 74.561864][ T8428] netlink: 'syz-executor036': attribute type 4 has an invalid length. [ 80.529278][ T8426] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888109a213e0 (size 32): comm "syz-executor036", pid 8427, jiffies 4294944118 (age 14.190s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 01 00 00 00 00 00 00 00 00 00 00 00 00 00 02 00 ................ backtrace: [<000000005e4f4b7e>] ip_mc_add_src+0x348/0x450 [<00000000ed68d6ae>] ip_mc_source+0x3d4/0x610 [<0000000099b4ec4a>] ip_setsockopt+0x15d8/0x1f70 [<00000000e78ff8dd>] tcp_setsockopt+0x70/0x13f0 [<00000000c5946fc4>] __sys_setsockopt+0x1b0/0x360 [<00000000ca7a7cd5>] __x64_sys_setsockopt+0x22/0x30 [<0000000062050479>] do_syscall_64+0x2d/0x70 [<00000000dca440cc>] entry_SYSCALL_64_after_hwframe+0x44/0xa9