[ 30.702009] audit: type=1800 audit(1555474579.224:33): pid=6766 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 [ 30.730546] audit: type=1800 audit(1555474579.224:34): pid=6766 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: [ 61.922829] random: sshd: uninitialized urandom read (32 bytes read) [ 62.234828] audit: type=1400 audit(1555474610.754:35): avc: denied { map } for pid=6942 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 [ 62.284927] random: sshd: uninitialized urandom read (32 bytes read) [ 62.814756] random: sshd: uninitialized urandom read (32 bytes read) [ 63.001613] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.185' (ECDSA) to the list of known hosts. [ 68.567316] random: sshd: uninitialized urandom read (32 bytes read) [ 68.689536] audit: type=1400 audit(1555474617.204:36): avc: denied { map } for pid=6954 comm="syz-executor903" path="/root/syz-executor903648180" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 69.460227] IPVS: ftp: loaded support on port[0] = 21 [ 69.768256] chnl_net:caif_netlink_parms(): no params data found [ 69.799258] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.806477] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.813773] device bridge_slave_0 entered promiscuous mode [ 69.821357] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.827916] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.834971] device bridge_slave_1 entered promiscuous mode [ 69.849281] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 69.859407] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 69.875482] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 69.883174] team0: Port device team_slave_0 added [ 69.888663] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 69.895882] team0: Port device team_slave_1 added [ 69.901317] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 69.908568] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 69.961977] device hsr_slave_0 entered promiscuous mode [ 70.010379] device hsr_slave_1 entered promiscuous mode [ 70.060597] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 70.067596] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 70.081758] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.088322] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.095311] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.102054] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.129048] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 70.135660] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.144397] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 70.153842] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.173604] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.191348] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.202506] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 70.208586] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.216929] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.224716] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.231198] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.240227] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.248107] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.254530] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.267514] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.276962] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.286815] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.297137] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.308855] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 70.319932] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready executing program [ 70.326969] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.334404] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.346386] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 70.357173] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.385509] kasan: CONFIG_KASAN_INLINE enabled [ 70.390960] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 70.398392] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 70.404868] Modules linked in: [ 70.408097] CPU: 1 PID: 6964 Comm: syz-executor903 Not tainted 4.14.111 #1 [ 70.415360] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.424828] task: ffff8880a50f0600 task.stack: ffff888095ea8000 [ 70.430920] RIP: 0010:addr_resolve+0x28c/0xa80 [ 70.435537] RSP: 0018:ffff888095eaf828 EFLAGS: 00010202 [ 70.440911] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11014a1e1ce [ 70.448690] RDX: 00000000000000a8 RSI: 0000000000000001 RDI: 0000000000000282 [ 70.456509] RBP: ffff888095eaf920 R08: ffff8880a50f0600 R09: 0000000000000000 [ 70.464258] R10: 0000000000000000 R11: ffff8880a50f0600 R12: 00000000ffffff9d [ 70.471835] R13: ffff888093bd41c0 R14: ffff888083500ea0 R15: 0000000000000540 [ 70.479132] FS: 0000000000ed2880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 70.487608] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.493485] CR2: 00000000006d3090 CR3: 000000008ec8b000 CR4: 00000000001406e0 [ 70.500922] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.508185] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.515451] Call Trace: [ 70.518033] ? addr_resolve_neigh+0x8a0/0x8a0 [ 70.522595] ? lockdep_init_map+0x9/0x10 [ 70.526661] ? init_timer_key+0xdc/0x300 [ 70.531848] rdma_resolve_ip+0x3d9/0x660 [ 70.536464] ? cma_work_handler+0x1e0/0x1e0 [ 70.542186] rdma_resolve_addr+0x1f5/0x2520 [ 70.546806] ? __mutex_unlock_slowpath+0x71/0x800 [ 70.551814] ? rdma_bind_addr+0x1a60/0x1a60 [ 70.556153] ucma_resolve_addr+0x158/0x1f0 [ 70.560381] ? ucma_resolve_addr+0x158/0x1f0 [ 70.565142] ? ucma_get_ctx+0x130/0x130 [ 70.569190] ? lock_downgrade+0x6e0/0x6e0 [ 70.573435] ? kasan_check_write+0x14/0x20 [ 70.577685] ? _copy_from_user+0x99/0x110 [ 70.581888] ucma_write+0x234/0x310 [ 70.585537] ? ucma_get_ctx+0x130/0x130 [ 70.589502] ? ucma_open+0x290/0x290 [ 70.593213] __vfs_write+0x107/0x6c0 [ 70.596965] ? ucma_open+0x290/0x290 [ 70.600673] ? kernel_read+0x120/0x120 [ 70.604545] ? __inode_security_revalidate+0xd6/0x130 [ 70.609768] ? avc_policy_seqno+0x9/0x20 [ 70.613829] ? selinux_file_permission+0x85/0x480 [ 70.618903] ? security_file_permission+0x8f/0x1f0 [ 70.623937] ? rw_verify_area+0xea/0x2b0 [ 70.628091] vfs_write+0x198/0x500 [ 70.631922] SyS_write+0xb8/0x180 [ 70.635575] ? SyS_read+0x180/0x180 [ 70.639473] ? do_syscall_64+0x53/0x630 [ 70.643643] ? SyS_read+0x180/0x180 [ 70.647266] do_syscall_64+0x1eb/0x630 [ 70.651145] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 70.655983] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 70.661173] RIP: 0033:0x442379 [ 70.664572] RSP: 002b:00007ffe93a05b88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 70.672275] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442379 [ 70.679530] RDX: 0000000000000013 RSI: 0000000020000140 RDI: 0000000000000003 [ 70.686838] RBP: 00000000004a95b0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 70.694147] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 0000000000403280 [ 70.701666] R13: 0000000000403310 R14: 0000000000000000 R15: 0000000000000000 [ 70.708969] Code: e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f4 06 00 00 45 89 6e 64 e8 85 59 ef fc 4c 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 c3 06 00 00 48 8b 83 40 05 00 00 65 ff 08 e8 [ 70.728455] RIP: addr_resolve+0x28c/0xa80 RSP: ffff888095eaf828 [ 70.735913] ---[ end trace 50986b08dab34c4c ]--- [ 70.741068] Kernel panic - not syncing: Fatal exception [ 70.747455] Kernel Offset: disabled [ 70.751111] Rebooting in 86400 seconds..