[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 28.876121] kauditd_printk_skb: 7 callbacks suppressed [ 28.876135] audit: type=1800 audit(1542389931.359:29): pid=5890 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 [ 28.901377] audit: type=1800 audit(1542389931.369:30): pid=5890 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.109' (ECDSA) to the list of known hosts. 2018/11/16 17:39:02 parsed 1 programs 2018/11/16 17:39:04 executed programs: 0 syzkaller login: [ 42.071470] IPVS: ftp: loaded support on port[0] = 21 [ 42.329523] bridge0: port 1(bridge_slave_0) entered blocking state [ 42.336424] bridge0: port 1(bridge_slave_0) entered disabled state [ 42.343753] device bridge_slave_0 entered promiscuous mode [ 42.362706] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.369245] bridge0: port 2(bridge_slave_1) entered disabled state [ 42.376184] device bridge_slave_1 entered promiscuous mode [ 42.398166] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 42.417064] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 42.468922] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.490028] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.567171] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.574373] team0: Port device team_slave_0 added [ 42.591130] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.598517] team0: Port device team_slave_1 added [ 42.615710] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.635355] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.653958] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 42.673006] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 42.824077] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.830550] bridge0: port 2(bridge_slave_1) entered forwarding state [ 42.837544] bridge0: port 1(bridge_slave_0) entered blocking state [ 42.843896] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.368170] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.421983] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 43.476207] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 43.482393] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 43.490284] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 43.535045] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.912009] kasan: CONFIG_KASAN_INLINE enabled [ 43.916813] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.924170] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 43.930429] CPU: 1 PID: 6328 Comm: syz-executor0 Not tainted 4.20.0-rc2+ #337 [ 43.937686] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.947101] RIP: 0010:rdma_listen+0x357/0x990 [ 43.951584] Code: 4c 8b ab c8 01 00 00 31 f6 48 c7 c7 60 3b db 89 e8 9e eb 25 02 48 b8 00 00 00 00 00 fc ff df 49 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 64 05 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 43.970464] RSP: 0018:ffff8881b266f970 EFLAGS: 00010202 [ 43.975802] RAX: dffffc0000000000 RBX: ffff8881ba9a6d80 RCX: 0000000000000000 [ 43.983050] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008 [ 43.990303] RBP: ffff8881b266fa10 R08: fffffbfff13b6775 R09: fffffbfff13b6774 [ 43.997553] R10: ffff8881b266f960 R11: ffffffff89db3ba3 R12: 1ffff110364cdf31 [ 44.004800] R13: 0000000000000000 R14: 0000000000000003 R15: ffff8881d908fa80 [ 44.012048] FS: 00007f22f9e27700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 44.020255] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.026121] CR2: 00000000004cef08 CR3: 00000001ba4b4000 CR4: 00000000001406e0 [ 44.033374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.040630] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.047887] Call Trace: [ 44.050473] ? rdma_resolve_addr+0x2870/0x2870 [ 44.055046] ucma_listen+0x1a4/0x260 [ 44.058745] ? ucma_notify+0x210/0x210 [ 44.062623] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 44.068143] ? _copy_from_user+0xdf/0x150 [ 44.072284] ? ucma_notify+0x210/0x210 [ 44.076163] ucma_write+0x365/0x460 [ 44.079777] ? ucma_open+0x3f0/0x3f0 [ 44.083481] __vfs_write+0x119/0x9f0 [ 44.087182] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 44.092101] ? ucma_open+0x3f0/0x3f0 [ 44.095801] ? kernel_read+0x120/0x120 [ 44.099678] ? apparmor_path_rmdir+0x30/0x30 [ 44.104075] ? trace_hardirqs_off_caller+0x310/0x310 [ 44.109162] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 44.114689] ? apparmor_file_permission+0x24/0x30 [ 44.119515] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.125052] ? security_file_permission+0x1c2/0x220 [ 44.130056] ? rw_verify_area+0x118/0x360 [ 44.134192] vfs_write+0x1fc/0x560 [ 44.137725] ksys_write+0x101/0x260 [ 44.141338] ? __ia32_sys_read+0xb0/0xb0 [ 44.145386] ? trace_hardirqs_off_caller+0x310/0x310 [ 44.150479] __x64_sys_write+0x73/0xb0 [ 44.154356] do_syscall_64+0x1b9/0x820 [ 44.158231] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 44.163578] ? syscall_return_slowpath+0x5e0/0x5e0 [ 44.168507] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.173338] ? trace_hardirqs_on_caller+0x310/0x310 [ 44.178362] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 44.183363] ? prepare_exit_to_usermode+0x291/0x3b0 [ 44.188366] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.193197] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 44.198369] RIP: 0033:0x457569 [ 44.201652] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 44.220536] RSP: 002b:00007f22f9e26c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 44.228224] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 44.235477] RDX: 0000000000000010 RSI: 00000000200000c0 RDI: 0000000000000005 [ 44.242726] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 44.249978] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f22f9e276d4 [ 44.257230] R13: 00000000004c571f R14: 00000000004d9360 R15: 00000000ffffffff [ 44.264487] Modules linked in: [ 44.270482] ---[ end trace ad276a0bcb316fb3 ]--- [ 44.275255] RIP: 0010:rdma_listen+0x357/0x990 [ 44.280205] Code: 4c 8b ab c8 01 00 00 31 f6 48 c7 c7 60 3b db 89 e8 9e eb 25 02 48 b8 00 00 00 00 00 fc ff df 49 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 64 05 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 44.299162] RSP: 0018:ffff8881b266f970 EFLAGS: 00010202 [ 44.304527] RAX: dffffc0000000000 RBX: ffff8881ba9a6d80 RCX: 0000000000000000 [ 44.311825] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008 [ 44.319112] RBP: ffff8881b266fa10 R08: fffffbfff13b6775 R09: fffffbfff13b6774 [ 44.326369] R10: ffff8881b266f960 R11: ffffffff89db3ba3 R12: 1ffff110364cdf31 [ 44.333663] R13: 0000000000000000 R14: 0000000000000003 R15: ffff8881d908fa80 [ 44.341141] FS: 00007f22f9e27700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 44.349550] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.355433] CR2: ffffffffff600400 CR3: 00000001ba4b4000 CR4: 00000000001406e0 [ 44.362723] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.370019] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.377325] Kernel panic - not syncing: Fatal exception [ 44.383607] Kernel Offset: disabled [ 44.387231] Rebooting in 86400 seconds..