[....] Starting OpenBSD Secure Shell server: sshd[   50.960525] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.
[   51.305823] audit: type=1800 audit(1539003526.353:29): pid=5851 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   54.919516] random: sshd: uninitialized urandom read (32 bytes read)
[   55.404075] random: sshd: uninitialized urandom read (32 bytes read)
[   56.483179] random: sshd: uninitialized urandom read (32 bytes read)
[   56.833263] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.79' (ECDSA) to the list of known hosts.
[   62.592723] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   62.846428] IPVS: ftp: loaded support on port[0] = 21
[   62.889777] ==================================================================
[   62.897177] BUG: KMSAN: uninit-value in memcmp+0x117/0x180
[   62.902815] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 4.19.0-rc4+ #64
[   62.909644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   62.918996] Workqueue: ipv6_addrconf addrconf_dad_work
[   62.924265] Call Trace:
[   62.926848]  dump_stack+0x306/0x460
[   62.930467]  ? memcmp+0x117/0x180
[   62.933923]  kmsan_report+0x1a2/0x2e0
[   62.937726]  __msan_warning+0x7c/0xe0
[   62.941522]  memcmp+0x117/0x180
[   62.944817]  __dev_mc_add+0x1f9/0x8b0
[   62.948625]  dev_mc_add+0x6d/0x80
[   62.952079]  igmp6_group_added+0x2d7/0xab0
[   62.956322]  __ipv6_dev_mc_inc+0xeff/0x10f0
[   62.960654]  ipv6_dev_mc_inc+0x70/0x80
[   62.964539]  addrconf_dad_work+0x3e7/0x2690
[   62.968862]  ? ipv6_get_saddr_eval+0x1530/0x1530
[   62.973620]  process_one_work+0x19c4/0x24f0
[   62.977951]  worker_thread+0x206d/0x2b30
[   62.982026]  kthread+0x59c/0x5d0
[   62.985392]  ? process_one_work+0x24f0/0x24f0
[   62.989885]  ? INIT_BOOL+0x30/0x30
[   62.993450]  ret_from_fork+0x35/0x40
[   62.997162] 
[   62.998779] Local variable description: ----buf@igmp6_group_added
[   63.004994] Variable was created at:
[   63.008703]  igmp6_group_added+0x57/0xab0
[   63.012843]  __ipv6_dev_mc_inc+0xeff/0x10f0
[   63.017148] ==================================================================
[   63.024494] Disabling lock debugging due to kernel taint
[   63.029932] Kernel panic - not syncing: panic_on_warn set ...
[   63.029932] 
[   63.037295] CPU: 1 PID: 18 Comm: kworker/1:0 Tainted: G    B             4.19.0-rc4+ #64
[   63.045512] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   63.054877] Workqueue: ipv6_addrconf addrconf_dad_work
[   63.060151] Call Trace:
[   63.062737]  dump_stack+0x306/0x460
[   63.066372]  panic+0x54c/0xafa
[   63.069580]  ? __msan_metadata_ptr_for_store_1+0x13/0x20
[   63.075038]  kmsan_report+0x2d3/0x2e0
[   63.078840]  __msan_warning+0x7c/0xe0
[   63.082647]  memcmp+0x117/0x180
[   63.085927]  __dev_mc_add+0x1f9/0x8b0
[   63.089728]  dev_mc_add+0x6d/0x80
[   63.093180]  igmp6_group_added+0x2d7/0xab0
[   63.097420]  __ipv6_dev_mc_inc+0xeff/0x10f0
[   63.101750]  ipv6_dev_mc_inc+0x70/0x80
[   63.105639]  addrconf_dad_work+0x3e7/0x2690
[   63.109968]  ? ipv6_get_saddr_eval+0x1530/0x1530
[   63.114724]  process_one_work+0x19c4/0x24f0
[   63.119059]  worker_thread+0x206d/0x2b30
[   63.123151]  kthread+0x59c/0x5d0
[   63.126529]  ? process_one_work+0x24f0/0x24f0
[   63.131135]  ? INIT_BOOL+0x30/0x30
[   63.134688]  ret_from_fork+0x35/0x40
[   63.139449] Kernel Offset: disabled
[   63.143075] Rebooting in 86400 seconds..