[ 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 '10.128.0.73' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 59.183246][ T8380] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88810dba3c00 (size 232): comm "syz-executor139", pid 8387, jiffies 4294942478 (age 13.190s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 a0 12 01 81 88 ff ff 40 40 8b 08 81 88 ff ff ........@@...... backtrace: [] __alloc_skb+0x20f/0x280 [] sctp_packet_transmit+0x117/0xc20 [] sctp_outq_flush_transports+0x151/0x1c0 [] sctp_outq_uncork+0xaf/0xd0 [] sctp_do_sm+0x312/0x2370 [] sctp_assoc_bh_rcv+0x1e3/0x300 [] sctp_inq_push+0x93/0xc0 [] sctp_backlog_rcv+0xa2/0x4b0 [] __release_sock+0xc1/0x140 [] release_sock+0x32/0xd0 [] inet_shutdown+0xd9/0x1a0 [] __sys_shutdown+0x6b/0xd0 [] __x64_sys_shutdown+0x16/0x20 [] do_syscall_64+0x2d/0x70 [] entry_SYSCALL_64_after_hwframe+0x44/0xae