[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 12.728465] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 14.185185] random: sshd: uninitialized urandom read (32 bytes read) [ 14.436828] random: sshd: uninitialized urandom read (32 bytes read) [ 15.332037] random: sshd: uninitialized urandom read (32 bytes read) [ 19.889977] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.196' (ECDSA) to the list of known hosts. [ 25.310965] random: sshd: uninitialized urandom read (32 bytes read) net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 25.412767] IPVS: Creating netns size=2536 id=1 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 25.436144] IPVS: Creating netns size=2536 id=2 executing program net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 25.472516] IPVS: Creating netns size=2536 id=3 executing program net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 25.510775] IPVS: Creating netns size=2536 id=4 executing program [ 25.544935] IPVS: Creating netns size=2536 id=5 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 25.646281] IPVS: Creating netns size=2536 id=6 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 executing program executing program net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 25.704628] IPVS: Creating netns size=2536 id=7 executing program net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 25.756214] IPVS: Creating netns size=2536 id=8 executing program executing program [ 26.744574] ------------[ cut here ]------------ [ 26.749446] WARNING: CPU: 1 PID: 492 at net/xfrm/xfrm_state.c:2175 xfrm_state_fini+0x2a0/0x340 [ 26.758330] Kernel panic - not syncing: panic_on_warn set ... [ 26.758330] [ 26.765670] CPU: 1 PID: 492 Comm: kworker/u4:2 Not tainted 4.9.113-g90e7a90 #16 [ 26.773084] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.782421] Workqueue: netns cleanup_net [ 26.786596] ffff8801d85d7950 ffffffff81eb4569 ffffffff83c48980 00000000ffffffff [ 26.794592] 0000000000000000 0000000000000001 000000000000087f ffff8801d85d7a10 [ 26.802596] ffffffff81421a55 0000000041b58ab3 ffffffff843bbec8 ffffffff81421896 [ 26.810583] Call Trace: [ 26.813145] [] dump_stack+0xc1/0x128 [ 26.818479] [] panic+0x1bf/0x3bc [ 26.823466] [] ? add_taint.cold.6+0x16/0x16 [ 26.829409] [] ? xfrm_state_flush+0x1e0/0x300 [ 26.835540] [] ? trace_hardirqs_on+0xd/0x10 [ 26.841484] [] ? __warn.cold.9+0xa6/0x17f [ 26.847254] [] ? xfrm_state_fini+0x2a0/0x340 [ 26.853291] [] __warn.cold.9+0xc1/0x17f [ 26.858897] [] warn_slowpath_null+0x2c/0x40 [ 26.864924] [] xfrm_state_fini+0x2a0/0x340 [ 26.870781] [] ? xfrm_policy_fini+0x310/0x310 [ 26.876896] [] xfrm_net_exit+0x2d/0x30 [ 26.882416] [] ops_exit_list.isra.6+0xb0/0x160 [ 26.888620] [] cleanup_net+0x321/0x630 [ 26.894143] [] ? net_drop_ns+0x80/0x80 [ 26.899670] [] ? __lock_is_held+0xa2/0xf0 [ 26.905446] [] process_one_work+0x7e1/0x1500 [ 26.911477] [] ? process_one_work+0x728/0x1500 [ 26.917681] [] ? pwq_dec_nr_in_flight+0x2e0/0x2e0 [ 26.924157] [] worker_thread+0xd6/0x10a0 [ 26.929854] [] ? __schedule+0x655/0x1bd0 [ 26.935544] [] kthread+0x26d/0x300 [ 26.940716] [] ? process_one_work+0x1500/0x1500 [ 26.947014] [] ? kthread_park+0xa0/0xa0 [ 26.952784] [] ? kthread_park+0xa0/0xa0 [ 26.958404] [] ? kthread_park+0xa0/0xa0 [ 26.964013] [] ret_from_fork+0x5c/0x70 [ 26.970097] Dumping ftrace buffer: [ 26.973735] (ftrace buffer empty) [ 26.977442] Kernel Offset: disabled [ 26.981160] Rebooting in 86400 seconds..