[....] 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. [ 28.722411] kauditd_printk_skb: 7 callbacks suppressed [ 28.722426] audit: type=1800 audit(1542391414.593:29): pid=5851 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 [ 28.752335] audit: type=1800 audit(1542391414.593:30): pid=5851 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 syzkaller login: [ 32.498032] sshd (5988) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.40' (ECDSA) to the list of known hosts. 2018/11/16 18:05:34 parsed 1 programs 2018/11/16 18:05:36 executed programs: 0 [ 150.916601] IPVS: ftp: loaded support on port[0] = 21 [ 151.152591] bridge0: port 1(bridge_slave_0) entered blocking state [ 151.159312] bridge0: port 1(bridge_slave_0) entered disabled state [ 151.166300] device bridge_slave_0 entered promiscuous mode [ 151.183358] bridge0: port 2(bridge_slave_1) entered blocking state [ 151.189838] bridge0: port 2(bridge_slave_1) entered disabled state [ 151.196685] device bridge_slave_1 entered promiscuous mode [ 151.213321] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 151.230160] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 151.275516] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 151.295381] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 151.365160] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 151.372543] team0: Port device team_slave_0 added [ 151.389200] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 151.396389] team0: Port device team_slave_1 added [ 151.412787] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 151.434376] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 151.451480] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 151.471866] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 151.612550] bridge0: port 2(bridge_slave_1) entered blocking state [ 151.619009] bridge0: port 2(bridge_slave_1) entered forwarding state [ 151.625754] bridge0: port 1(bridge_slave_0) entered blocking state [ 151.632176] bridge0: port 1(bridge_slave_0) entered forwarding state [ 152.116353] 8021q: adding VLAN 0 to HW filter on device bond0 [ 152.165200] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 152.213061] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 152.219371] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 152.226428] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 152.277412] 8021q: adding VLAN 0 to HW filter on device team0 [ 152.584820] kasan: CONFIG_KASAN_INLINE enabled [ 152.589826] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 152.597201] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 152.603429] CPU: 1 PID: 6277 Comm: syz-executor0 Not tainted 4.20.0-rc2+ #337 [ 152.610676] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 152.620016] RIP: 0010:rdma_listen+0x357/0x990 [ 152.624488] 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 [ 152.643367] RSP: 0018:ffff8881bb9df970 EFLAGS: 00010202 [ 152.648709] RAX: dffffc0000000000 RBX: ffff8881bbb1ad40 RCX: 0000000000000000 [ 152.655970] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008 [ 152.663219] RBP: ffff8881bb9dfa10 R08: fffffbfff13b6775 R09: fffffbfff13b6774 [ 152.670467] R10: ffff8881bb9df960 R11: ffffffff89db3ba3 R12: 1ffff1103773bf31 [ 152.677717] R13: 0000000000000000 R14: 0000000000000003 R15: ffff8881d8c43680 [ 152.684972] FS: 00007f2d3a3ac700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 152.693179] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 152.699053] CR2: 00000000004cef08 CR3: 00000001be3e2000 CR4: 00000000001406e0 [ 152.706309] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 152.713557] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 152.720803] Call Trace: [ 152.723373] ? rdma_resolve_addr+0x2870/0x2870 [ 152.728011] ucma_listen+0x1a4/0x260 [ 152.731713] ? ucma_notify+0x210/0x210 [ 152.735586] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 152.741121] ? _copy_from_user+0xdf/0x150 [ 152.745273] ? ucma_notify+0x210/0x210 [ 152.749154] ucma_write+0x365/0x460 [ 152.752762] ? ucma_open+0x3f0/0x3f0 [ 152.756462] __vfs_write+0x119/0x9f0 [ 152.760156] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 152.765061] ? ucma_open+0x3f0/0x3f0 [ 152.768793] ? kernel_read+0x120/0x120 [ 152.772686] ? apparmor_path_rmdir+0x30/0x30 [ 152.777122] ? trace_hardirqs_off_caller+0x310/0x310 [ 152.782203] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 152.787725] ? apparmor_file_permission+0x24/0x30 [ 152.792548] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 152.798065] ? security_file_permission+0x1c2/0x220 [ 152.803061] ? rw_verify_area+0x118/0x360 [ 152.807193] vfs_write+0x1fc/0x560 [ 152.810715] ksys_write+0x101/0x260 [ 152.814371] ? __ia32_sys_read+0xb0/0xb0 [ 152.818446] ? trace_hardirqs_off_caller+0x310/0x310 [ 152.823529] __x64_sys_write+0x73/0xb0 [ 152.827415] do_syscall_64+0x1b9/0x820 [ 152.831300] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 152.836673] ? syscall_return_slowpath+0x5e0/0x5e0 [ 152.841618] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 152.846441] ? trace_hardirqs_on_caller+0x310/0x310 [ 152.851452] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 152.856466] ? prepare_exit_to_usermode+0x291/0x3b0 [ 152.861466] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 152.866292] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 152.871462] RIP: 0033:0x457569 [ 152.874654] 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 [ 152.893537] RSP: 002b:00007f2d3a3abc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 152.901223] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 152.908489] RDX: 0000000000000010 RSI: 00000000200000c0 RDI: 0000000000000005 [ 152.915748] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 152.923004] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2d3a3ac6d4 [ 152.930294] R13: 00000000004c571f R14: 00000000004d9360 R15: 00000000ffffffff [ 152.937544] Modules linked in: [ 152.943474] ---[ end trace c86c20c7cfb8fb19 ]--- [ 152.948253] RIP: 0010:rdma_listen+0x357/0x990 [ 152.953224] 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 [ 152.972727] RSP: 0018:ffff8881bb9df970 EFLAGS: 00010202 [ 152.978092] RAX: dffffc0000000000 RBX: ffff8881bbb1ad40 RCX: 0000000000000000 [ 152.985423] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008 [ 152.992818] RBP: ffff8881bb9dfa10 R08: fffffbfff13b6775 R09: fffffbfff13b6774 [ 153.000266] R10: ffff8881bb9df960 R11: ffffffff89db3ba3 R12: 1ffff1103773bf31 [ 153.007539] R13: 0000000000000000 R14: 0000000000000003 R15: ffff8881d8c43680 [ 153.014830] FS: 00007f2d3a3ac700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 153.023236] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 153.029360] CR2: 00000000004cef08 CR3: 00000001be3e2000 CR4: 00000000001406e0 [ 153.036623] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 153.044071] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 153.051452] Kernel panic - not syncing: Fatal exception [ 153.057713] Kernel Offset: disabled [ 153.061332] Rebooting in 86400 seconds..