[ 29.983287] audit: type=1800 audit(1562141008.106:33): pid=6751 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 30.010641] audit: type=1800 audit(1562141008.106:34): pid=6751 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 34.059577] random: sshd: uninitialized urandom read (32 bytes read) [ 34.419193] audit: type=1400 audit(1562141012.536:35): avc: denied { map } for pid=6924 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 34.469466] random: sshd: uninitialized urandom read (32 bytes read) [ 35.062924] random: sshd: uninitialized urandom read (32 bytes read) [ 35.250313] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.139' (ECDSA) to the list of known hosts. [ 40.773015] random: sshd: uninitialized urandom read (32 bytes read) [ 40.953744] audit: type=1400 audit(1562141019.076:36): avc: denied { map } for pid=6937 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2019/07/03 08:03:40 parsed 1 programs [ 41.886696] audit: type=1400 audit(1562141020.006:37): avc: denied { map } for pid=6937 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=25 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 42.456408] random: cc1: uninitialized urandom read (8 bytes read) 2019/07/03 08:03:41 executed programs: 0 [ 44.100240] IPVS: ftp: loaded support on port[0] = 21 [ 44.407310] chnl_net:caif_netlink_parms(): no params data found [ 44.436755] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.443399] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.450753] device bridge_slave_0 entered promiscuous mode [ 44.457496] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.463959] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.471028] device bridge_slave_1 entered promiscuous mode [ 44.484965] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 44.493808] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 44.508573] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 44.516452] team0: Port device team_slave_0 added [ 44.521846] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 44.528807] team0: Port device team_slave_1 added [ 44.534058] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 44.541241] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 44.602051] device hsr_slave_0 entered promiscuous mode [ 44.670296] device hsr_slave_1 entered promiscuous mode [ 44.720598] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 44.727427] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 44.739996] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.746424] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.753301] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.759629] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.786262] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 44.792362] 8021q: adding VLAN 0 to HW filter on device bond0 [ 44.799706] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 44.807917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 44.826311] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.833302] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.844098] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 44.850309] 8021q: adding VLAN 0 to HW filter on device team0 [ 44.858187] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 44.865928] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.872283] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.891592] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 44.899172] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.905543] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.912567] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 44.920067] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 44.927489] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 44.935298] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 44.943295] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 44.949280] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 44.956355] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 44.967732] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 44.976773] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 45.400953] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 46.171802] hsr_addr_subst_dest: Unknown node [ 46.176519] ------------[ cut here ]------------ [ 46.181269] WARNING: CPU: 1 PID: 6970 at net/hsr/hsr_framereg.c:313 hsr_addr_subst_dest.cold+0x45/0x4f [ 46.190688] Kernel panic - not syncing: panic_on_warn set ... [ 46.190688] [ 46.198027] CPU: 1 PID: 6970 Comm: syz-executor.0 Not tainted 4.14.131 #25 [ 46.205054] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.214387] Call Trace: [ 46.216963] dump_stack+0x138/0x19c [ 46.220583] panic+0x1f2/0x426 [ 46.223751] ? add_taint.cold+0x16/0x16 [ 46.227701] ? hsr_addr_subst_dest.cold+0x45/0x4f [ 46.232521] ? hsr_addr_subst_dest.cold+0x45/0x4f [ 46.237341] __warn.cold+0x2f/0x36 [ 46.240866] ? ist_end_non_atomic+0x10/0x10 [ 46.245168] ? hsr_addr_subst_dest.cold+0x45/0x4f [ 46.250046] report_bug+0x216/0x254 [ 46.253654] do_error_trap+0x1bb/0x310 [ 46.257520] ? math_error+0x360/0x360 [ 46.261298] ? vprintk_emit+0x171/0x600 [ 46.265258] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.270081] do_invalid_op+0x1b/0x20 [ 46.273774] invalid_op+0x1b/0x40 [ 46.277205] RIP: 0010:hsr_addr_subst_dest.cold+0x45/0x4f [ 46.282723] RSP: 0018:ffff8880803b74f8 EFLAGS: 00010286 [ 46.288069] RAX: 0000000000000021 RBX: dffffc0000000000 RCX: 0000000000000000 [ 46.295336] RDX: 0000000000000000 RSI: ffffffff866d0ca0 RDI: ffffed1010076e95 [ 46.302585] RBP: ffff8880803b7538 R08: 0000000000000021 R09: 0000000000000000 [ 46.309838] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a175eca0 [ 46.317092] R13: 0000000000000000 R14: ffff8880a175eca0 R15: 0000000000005e6f [ 46.324357] ? hsr_addr_subst_dest.cold+0x45/0x4f [ 46.329180] hsr_forward_skb+0x1025/0x1940 [ 46.333403] hsr_dev_xmit+0x72/0xa0 [ 46.337020] dev_hard_start_xmit+0x18c/0x8b0 [ 46.341412] ? check_preemption_disabled+0x30/0x250 [ 46.346407] __dev_queue_xmit+0x1d95/0x25e0 [ 46.350722] ? netdev_pick_tx+0x300/0x300 [ 46.354855] ? skb_copy_datagram_from_iter+0x3b7/0x5b0 [ 46.360108] ? lock_downgrade+0x6e0/0x6e0 [ 46.364233] dev_queue_xmit+0x18/0x20 [ 46.368011] ? dev_queue_xmit+0x18/0x20 [ 46.371962] packet_sendmsg+0x328f/0x5920 [ 46.376086] ? avc_has_perm_noaudit+0x420/0x420 [ 46.380760] ? kasan_check_write+0x14/0x20 [ 46.384975] ? _copy_from_user+0x99/0x110 [ 46.389113] ? rw_copy_check_uvector+0x1f1/0x290 [ 46.393852] ? packet_notifier+0x760/0x760 [ 46.398064] ? copy_msghdr_from_user+0x292/0x3f0 [ 46.402808] ? security_socket_sendmsg+0x89/0xb0 [ 46.407540] ? packet_notifier+0x760/0x760 [ 46.411752] sock_sendmsg+0xce/0x110 [ 46.415441] ___sys_sendmsg+0x349/0x840 [ 46.419393] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 46.424125] ? find_held_lock+0x35/0x130 [ 46.428181] ? __fget+0x210/0x370 [ 46.431624] ? lock_downgrade+0x6e0/0x6e0 [ 46.435754] ? __fget+0x237/0x370 [ 46.439189] ? __fget_light+0x172/0x1f0 [ 46.443142] ? __fdget+0x1b/0x20 [ 46.446491] ? sockfd_lookup_light+0xb4/0x160 [ 46.450967] __sys_sendmmsg+0x152/0x3a0 [ 46.454918] ? SyS_sendmsg+0x50/0x50 [ 46.458617] ? kasan_check_read+0x11/0x20 [ 46.462757] ? _copy_to_user+0x87/0xd0 [ 46.466642] ? put_timespec64+0xb4/0x100 [ 46.470687] ? nsecs_to_jiffies+0x30/0x30 [ 46.474823] ? SyS_clock_gettime+0xf8/0x180 [ 46.479125] SyS_sendmmsg+0x35/0x60 [ 46.482727] ? __sys_sendmmsg+0x3a0/0x3a0 [ 46.486859] do_syscall_64+0x1e8/0x640 [ 46.490719] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.495538] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.500705] RIP: 0033:0x4597c9 [ 46.503869] RSP: 002b:00007f72e1966c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 46.511554] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000004597c9 [ 46.518804] RDX: 0000000000000001 RSI: 0000000020004e80 RDI: 0000000000000003 [ 46.526063] RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 [ 46.533309] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f72e19676d4 [ 46.540553] R13: 00000000004c6df8 R14: 00000000004dc140 R15: 00000000ffffffff [ 46.549038] Kernel Offset: disabled [ 46.552710] Rebooting in 86400 seconds..