[  OK  ] Started Getty on tty5.
[  OK  ] Started Getty on tty4.
[  OK  ] Started Getty on tty3.
[  OK  ] Started Getty on tty2.
[  OK  ] Started Serial Getty on ttyS0.
[  OK  ] Started Getty on tty1.
[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.9' (ECDSA) to the list of known hosts.
syzkaller login: [  119.586417][ T8238] IPVS: ftp: loaded support on port[0] = 21
[  119.678183][ T1241] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  119.686385][ T1241] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  119.695913][    T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
executing program
[  119.743704][ T1044] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  119.751965][ T1044] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  119.759833][ T1980] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
[  119.786418][ T8277] =====================================================
[  119.792680][ T8277] BUG: KMSAN: uninit-value in hwsim_cloned_frame_received_nl+0x124f/0x13f0
[  119.792680][ T8277] CPU: 1 PID: 8277 Comm: syz-executor401 Not tainted 5.12.0-rc6-syzkaller #0
[  119.792680][ T8277] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  119.792680][ T8277] Call Trace:
[  119.792680][ T8277]  dump_stack+0x24c/0x2e0
[  119.792680][ T8277]  kmsan_report+0xfb/0x1e0
[  119.792680][ T8277]  __msan_warning+0x5c/0xa0
[  119.792680][ T8277]  hwsim_cloned_frame_received_nl+0x124f/0x13f0
[  119.792680][ T8277]  ? hwsim_register_received_nl+0x740/0x740
[  119.792680][ T8277]  genl_rcv_msg+0x1319/0x1610
[  119.792680][ T8277]  ? hwsim_register_received_nl+0x740/0x740
[  119.792680][ T8277]  ? kmsan_set_origin_checked+0xa2/0x100
[  119.792680][ T8277]  netlink_rcv_skb+0x6fa/0x810
[  119.792680][ T8277]  ? genl_bind+0x4b0/0x4b0
[  119.792680][ T8277]  genl_rcv+0x63/0x80
[  119.792680][ T8277]  netlink_unicast+0x11d6/0x14a0
[  119.792680][ T8277]  ? genl_pernet_exit+0x90/0x90
[  119.792680][ T8277]  netlink_sendmsg+0x1740/0x1840
[  119.792680][ T8277]  ? netlink_getsockopt+0x1830/0x1830
[  119.792680][ T8277]  __sys_sendto+0x9ea/0xc60
[  119.792680][ T8277]  ? kmsan_get_metadata+0x116/0x180
[  119.792680][ T8277]  ? kmsan_get_shadow_origin_ptr+0x84/0xb0
[  119.792680][ T8277]  ? kmsan_get_metadata+0x116/0x180
[  119.792680][ T8277]  __se_sys_sendto+0x107/0x130
[  119.792680][ T8277]  __x64_sys_sendto+0x6e/0x90
[  119.792680][ T8277]  do_syscall_64+0x9f/0x140
[  119.792680][ T8277]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[  119.792680][ T8277] RIP: 0033:0x402d66
[  119.792680][ T8277] Code: 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 72 c3 90 55 48 83 ec 30 44 89 4c 24 2c 4c 89
[  119.792680][ T8277] RSP: 002b:00007ffe431198c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[  119.792680][ T8277] RAX: ffffffffffffffda RBX: 00007ffe43119940 RCX: 0000000000402d66
[  119.792680][ T8277] RDX: 0000000000000034 RSI: 00007ffe43119990 RDI: 0000000000000003
[  119.792680][ T8277] RBP: 0000000000000001 R08: 00007ffe431198e4 R09: 000000000000000c
[  119.792680][ T8277] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[  119.792680][ T8277] R13: 00007ffe43119990 R14: 0000000000000003 R15: 0000000000000000
[  119.792680][ T8277] 
[  119.792680][ T8277] Uninit was created at:
[  119.792680][ T8277]  kmsan_internal_poison_shadow+0x66/0xd0
[  119.792680][ T8277]  kmsan_slab_alloc+0x8e/0xe0
[  119.792680][ T8277]  __kmalloc_node_track_caller+0xa4f/0x1470
[  119.792680][ T8277]  __alloc_skb+0x4dd/0xe90
[  119.792680][ T8277]  hwsim_cloned_frame_received_nl+0x223/0x13f0
[  119.792680][ T8277]  genl_rcv_msg+0x1319/0x1610
[  119.792680][ T8277]  netlink_rcv_skb+0x6fa/0x810
[  119.792680][ T8277]  genl_rcv+0x63/0x80
[  119.792680][ T8277]  netlink_unicast+0x11d6/0x14a0
[  119.792680][ T8277]  netlink_sendmsg+0x1740/0x1840
[  119.792680][ T8277]  __sys_sendto+0x9ea/0xc60
[  119.792680][ T8277]  __se_sys_sendto+0x107/0x130
[  119.792680][ T8277]  __x64_sys_sendto+0x6e/0x90
[  119.792680][ T8277]  do_syscall_64+0x9f/0x140
[  119.792680][ T8277]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[  119.792680][ T8277] =====================================================
[  119.792680][ T8277] Disabling lock debugging due to kernel taint
[  119.792680][ T8277] Kernel panic - not syncing: panic_on_kmsan set ...
[  119.792680][ T8277] CPU: 1 PID: 8277 Comm: syz-executor401 Tainted: G    B             5.12.0-rc6-syzkaller #0
[  119.792680][ T8277] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  119.792680][ T8277] Call Trace:
[  119.792680][ T8277]  dump_stack+0x24c/0x2e0
[  119.792680][ T8277]  panic+0x4c6/0xea7
[  119.792680][ T8277]  ? add_taint+0x17c/0x210
[  119.792680][ T8277]  ? __msan_metadata_ptr_for_store_1+0x13/0x20
[  119.792680][ T8277]  kmsan_report+0x1de/0x1e0
[  119.792680][ T8277]  __msan_warning+0x5c/0xa0
[  119.792680][ T8277]  hwsim_cloned_frame_received_nl+0x124f/0x13f0
[  119.792680][ T8277]  ? hwsim_register_received_nl+0x740/0x740
[  119.792680][ T8277]  genl_rcv_msg+0x1319/0x1610
[  119.792680][ T8277]  ? hwsim_register_received_nl+0x740/0x740
[  119.792680][ T8277]  ? kmsan_set_origin_checked+0xa2/0x100
[  119.792680][ T8277]  netlink_rcv_skb+0x6fa/0x810
[  119.792680][ T8277]  ? genl_bind+0x4b0/0x4b0
[  119.792680][ T8277]  genl_rcv+0x63/0x80
[  119.792680][ T8277]  netlink_unicast+0x11d6/0x14a0
[  119.792680][ T8277]  ? genl_pernet_exit+0x90/0x90
[  119.792680][ T8277]  netlink_sendmsg+0x1740/0x1840
[  119.792680][ T8277]  ? netlink_getsockopt+0x1830/0x1830
[  119.792680][ T8277]  __sys_sendto+0x9ea/0xc60
[  119.792680][ T8277]  ? kmsan_get_metadata+0x116/0x180
[  119.792680][ T8277]  ? kmsan_get_shadow_origin_ptr+0x84/0xb0
[  119.792680][ T8277]  ? kmsan_get_metadata+0x116/0x180
[  119.792680][ T8277]  __se_sys_sendto+0x107/0x130
[  119.792680][ T8277]  __x64_sys_sendto+0x6e/0x90
[  119.792680][ T8277]  do_syscall_64+0x9f/0x140
[  119.792680][ T8277]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[  119.792680][ T8277] RIP: 0033:0x402d66
[  119.792680][ T8277] Code: 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 11 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 72 c3 90 55 48 83 ec 30 44 89 4c 24 2c 4c 89
[  119.792680][ T8277] RSP: 002b:00007ffe431198c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[  119.792680][ T8277] RAX: ffffffffffffffda RBX: 00007ffe43119940 RCX: 0000000000402d66
[  119.792680][ T8277] RDX: 0000000000000034 RSI: 00007ffe43119990 RDI: 0000000000000003
[  119.792680][ T8277] RBP: 0000000000000001 R08: 00007ffe431198e4 R09: 000000000000000c
[  119.792680][ T8277] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[  119.792680][ T8277] R13: 00007ffe43119990 R14: 0000000000000003 R15: 0000000000000000
[  119.792680][ T8277] Kernel Offset: disabled
[  119.792680][ T8277] Rebooting in 86400 seconds..