[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 32.607593] random: sshd: uninitialized urandom read (32 bytes read) [ 32.856333] kauditd_printk_skb: 9 callbacks suppressed [ 32.856341] audit: type=1400 audit(1572691012.375:35): avc: denied { map } for pid=6813 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 [ 32.911293] random: sshd: uninitialized urandom read (32 bytes read) [ 33.411592] random: sshd: uninitialized urandom read (32 bytes read) [ 42.859866] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.1.37' (ECDSA) to the list of known hosts. [ 48.405855] random: sshd: uninitialized urandom read (32 bytes read) [ 48.518623] audit: type=1400 audit(1572691028.035:36): avc: denied { map } for pid=6826 comm="syz-executor981" path="/root/syz-executor981835753" 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 [ 48.750868] IPVS: ftp: loaded support on port[0] = 21 [ 49.566697] chnl_net:caif_netlink_parms(): no params data found [ 49.594552] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.601276] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.608155] device bridge_slave_0 entered promiscuous mode [ 49.615025] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.621666] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.628466] device bridge_slave_1 entered promiscuous mode [ 49.643261] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 49.651986] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 49.666932] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 49.674207] team0: Port device team_slave_0 added [ 49.679491] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 49.686608] team0: Port device team_slave_1 added [ 49.691771] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 49.698841] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 49.761718] device hsr_slave_0 entered promiscuous mode [ 49.820287] device hsr_slave_1 entered promiscuous mode [ 49.900469] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 49.907303] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 49.920791] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.927277] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.934121] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.940531] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.965100] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 49.971778] 8021q: adding VLAN 0 to HW filter on device bond0 [ 49.979297] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 49.987442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.005759] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.012696] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.022530] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 50.028589] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.036703] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 50.044689] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.051126] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.059394] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 50.067059] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.073416] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.091207] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 50.098882] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 50.106490] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 50.114143] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 50.121639] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 50.129950] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 50.136191] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 50.147953] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 50.157242] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 50.181770] kasan: CONFIG_KASAN_INLINE enabled [ 50.186477] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 50.194242] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 50.200475] Modules linked in: [ 50.203676] CPU: 0 PID: 6827 Comm: syz-executor981 Not tainted 4.14.151 #0 [ 50.210662] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.219993] task: ffff8880953b8440 task.stack: ffff8880a7070000 [ 50.226033] RIP: 0010:addr_resolve+0x28c/0xa80 [ 50.230589] RSP: 0018:ffff8880a7077928 EFLAGS: 00010202 [ 50.235929] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11012a77196 [ 50.243175] RDX: 00000000000000a8 RSI: 0000000000000001 RDI: 0000000000000282 [ 50.250434] RBP: ffff8880a7077a20 R08: ffff8880953b8440 R09: 0000000000000000 [ 50.257692] R10: 0000000000000000 R11: ffff8880953b8440 R12: 00000000ffffff9d [ 50.264950] R13: ffff8880a4e63d40 R14: ffff8880a70a6a20 R15: 0000000000000540 [ 50.272199] FS: 000000000113d880(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 [ 50.280397] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.286256] CR2: 0000000020000180 CR3: 000000009511c000 CR4: 00000000001406f0 [ 50.293505] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.300749] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.308010] Call Trace: [ 50.310583] ? addr_resolve_neigh+0x820/0x820 [ 50.315057] ? lockdep_init_map+0x9/0x10 [ 50.319095] ? init_timer_key+0xdc/0x300 [ 50.323133] rdma_resolve_ip+0x3d9/0x660 [ 50.327193] ? cma_work_handler+0x1d0/0x1d0 [ 50.331513] rdma_resolve_addr+0x1f5/0x2520 [ 50.335813] ? __mutex_unlock_slowpath+0x71/0x800 [ 50.340632] ? lock_downgrade+0x740/0x740 [ 50.344754] ? rdma_bind_addr+0x1a60/0x1a60 [ 50.349049] ? wait_for_completion+0x420/0x420 [ 50.353611] ucma_resolve_ip+0x104/0x190 [ 50.357645] ? ucma_resolve_ip+0x104/0x190 [ 50.361855] ? ucma_bind+0x190/0x190 [ 50.365548] ? kasan_check_write+0x14/0x20 [ 50.369761] ? _copy_from_user+0x99/0x110 [ 50.373885] ucma_write+0x231/0x310 [ 50.377486] ? ucma_bind+0x190/0x190 [ 50.381189] ? ucma_open+0x290/0x290 [ 50.384894] __vfs_write+0x105/0x6b0 [ 50.388582] ? ucma_open+0x290/0x290 [ 50.392284] ? kernel_read+0x120/0x120 [ 50.396146] ? __inode_security_revalidate+0xd6/0x130 [ 50.401326] ? avc_policy_seqno+0x9/0x20 [ 50.405375] ? selinux_file_permission+0x85/0x480 [ 50.410196] ? security_file_permission+0x89/0x1f0 [ 50.415100] ? rw_verify_area+0xea/0x2b0 [ 50.419135] vfs_write+0x198/0x500 [ 50.422664] SyS_write+0xfd/0x230 [ 50.426093] ? SyS_read+0x230/0x230 [ 50.429697] ? do_syscall_64+0x53/0x640 [ 50.433649] ? SyS_read+0x230/0x230 [ 50.437251] do_syscall_64+0x1e8/0x640 [ 50.441114] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.445948] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 50.451111] RIP: 0033:0x441d09 [ 50.454278] RSP: 002b:00007ffeb7019688 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 50.461961] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441d09 [ 50.469208] RDX: 0000000000000048 RSI: 00000000200000c0 RDI: 0000000000000004 [ 50.476455] RBP: 00007ffeb70196a0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 50.483702] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 0000000000000000 [ 50.490968] R13: 00000000004032a0 R14: 0000000000000000 R15: 0000000000000000 [ 50.498225] Code: e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f4 06 00 00 45 89 6e 64 e8 f5 21 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 [ 50.517291] RIP: addr_resolve+0x28c/0xa80 RSP: ffff8880a7077928 [ 50.524509] ---[ end trace f0824d753c83d66a ]--- [ 50.529273] Kernel panic - not syncing: Fatal exception [ 50.536026] Kernel Offset: disabled [ 50.539656] Rebooting in 86400 seconds..