Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 40.638093] audit: type=1800 audit(1573763625.143:33): pid=7455 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 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 45.958777] kauditd_printk_skb: 1 callbacks suppressed [ 45.958791] audit: type=1400 audit(1573763630.463:35): avc: denied { map } for pid=7629 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 Warning: Permanently added '10.128.0.165' (ECDSA) to the list of known hosts. [ 52.786520] audit: type=1400 audit(1573763637.293:36): avc: denied { map } for pid=7641 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 2019/11/14 20:33:57 parsed 1 programs [ 52.857289] audit: type=1400 audit(1573763637.363:37): avc: denied { map } for pid=7641 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=1056 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2019/11/14 20:33:59 executed programs: 0 [ 54.700016] IPVS: ftp: loaded support on port[0] = 21 [ 54.757310] chnl_net:caif_netlink_parms(): no params data found [ 54.788039] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.794593] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.801707] device bridge_slave_0 entered promiscuous mode [ 54.809432] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.816127] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.823033] device bridge_slave_1 entered promiscuous mode [ 54.839056] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 54.848012] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 54.863731] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 54.871364] team0: Port device team_slave_0 added [ 54.876839] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 54.884005] team0: Port device team_slave_1 added [ 54.889323] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 54.896648] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 54.946474] device hsr_slave_0 entered promiscuous mode [ 55.024815] device hsr_slave_1 entered promiscuous mode [ 55.085020] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 55.091898] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 55.107036] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.113523] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.120437] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.126814] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.156222] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 55.162389] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.170688] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 55.180067] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.198933] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.206245] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.213347] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 55.223658] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 55.230312] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.239959] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 55.247772] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.254102] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.262960] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 55.271087] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.277496] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.295590] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 55.303454] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 55.311117] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 55.319175] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 55.329009] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 55.338515] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 55.345028] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 55.356534] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 55.366320] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 55.373106] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 55.383086] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 55.392901] audit: type=1400 audit(1573763639.893:38): avc: denied { associate } for pid=7659 comm="syz-executor.0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 55.567722] ================================================================== [ 55.575381] BUG: KASAN: stack-out-of-bounds in ax25_getname+0x58/0x7a0 [ 55.582037] Write of size 72 at addr ffff88807ae07c78 by task syz-executor.0/7678 [ 55.589654] [ 55.591269] CPU: 0 PID: 7678 Comm: syz-executor.0 Not tainted 4.19.84 #0 [ 55.598090] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.607470] Call Trace: [ 55.610048] dump_stack+0x197/0x210 [ 55.613670] ? ax25_getname+0x58/0x7a0 [ 55.617565] print_address_description.cold+0x7c/0x20d [ 55.622826] ? ax25_getname+0x58/0x7a0 [ 55.626700] kasan_report.cold+0x8c/0x2ba [ 55.630837] check_memory_region+0x123/0x190 [ 55.635283] memset+0x24/0x40 [ 55.638390] ax25_getname+0x58/0x7a0 [ 55.642094] ? fget+0x1b/0x20 [ 55.645195] vhost_net_ioctl+0x120a/0x1900 [ 55.649421] ? handle_rx_kick+0x50/0x50 [ 55.653391] ? __fget+0x340/0x540 [ 55.656846] ? __might_sleep+0x95/0x190 [ 55.660815] ? handle_rx_kick+0x50/0x50 [ 55.664778] do_vfs_ioctl+0xd5f/0x1380 [ 55.668708] ? selinux_file_ioctl+0x46f/0x5e0 [ 55.673544] ? selinux_file_ioctl+0x125/0x5e0 [ 55.678148] ? ioctl_preallocate+0x210/0x210 [ 55.682637] ? selinux_file_mprotect+0x620/0x620 [ 55.687393] ? iterate_fd+0x360/0x360 [ 55.691187] ? nsecs_to_jiffies+0x30/0x30 [ 55.695341] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.700911] ? security_file_ioctl+0x8d/0xc0 [ 55.705343] ksys_ioctl+0xab/0xd0 [ 55.708895] __x64_sys_ioctl+0x73/0xb0 [ 55.712780] do_syscall_64+0xfd/0x620 [ 55.716663] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.721874] RIP: 0033:0x45a219 [ 55.725059] Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 55.743965] RSP: 002b:00007febeb5c8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 55.751671] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 [ 55.758931] RDX: 0000000020d7c000 RSI: 000000004008af30 RDI: 0000000000000003 [ 55.766195] RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000 [ 55.773464] R10: 0000000000000000 R11: 0000000000000246 R12: 00007febeb5c96d4 [ 55.780723] R13: 00000000004c56ed R14: 00000000004da738 R15: 00000000ffffffff [ 55.788006] [ 55.789619] The buggy address belongs to the page: [ 55.794565] page:ffffea0001eb81c0 count:0 mapcount:0 mapping:0000000000000000 index:0x0 [ 55.802781] flags: 0x1fffc0000000000() [ 55.806661] raw: 01fffc0000000000 0000000000000000 ffffffff01eb0101 0000000000000000 [ 55.814632] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 55.823003] page dumped because: kasan: bad access detected [ 55.828719] [ 55.830329] Memory state around the buggy address: [ 55.835268] ffff88807ae07b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 [ 55.842619] ffff88807ae07c00: f1 f1 f1 f1 f1 04 f2 00 f2 f2 f2 00 f2 f2 f2 00 [ 55.850075] >ffff88807ae07c80: 00 00 00 00 00 04 f3 f3 f3 f3 f3 00 00 00 00 00 [ 55.857486] ^ [ 55.862149] ffff88807ae07d00: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 [ 55.869514] ffff88807ae07d80: 00 f2 f2 f2 00 00 00 f2 f2 f2 f2 f2 00 00 00 00 [ 55.876859] ================================================================== [ 55.884214] Disabling lock debugging due to kernel taint [ 55.892595] Kernel panic - not syncing: panic_on_warn set ... [ 55.892595] [ 55.899975] CPU: 0 PID: 7678 Comm: syz-executor.0 Tainted: G B 4.19.84 #0 [ 55.908807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.919022] Call Trace: [ 55.921608] dump_stack+0x197/0x210 [ 55.925224] ? ax25_getname+0x58/0x7a0 [ 55.929093] panic+0x26a/0x50e [ 55.932272] ? __warn_printk+0xf3/0xf3 [ 55.936162] ? ax25_getname+0x58/0x7a0 [ 55.940044] ? preempt_schedule+0x4b/0x60 [ 55.944181] ? ___preempt_schedule+0x16/0x18 [ 55.948575] ? trace_hardirqs_on+0x5e/0x220 [ 55.952892] ? ax25_getname+0x58/0x7a0 [ 55.956764] kasan_end_report+0x47/0x4f [ 55.960738] kasan_report.cold+0xa9/0x2ba [ 55.964871] check_memory_region+0x123/0x190 [ 55.969274] memset+0x24/0x40 [ 55.972422] ax25_getname+0x58/0x7a0 [ 55.976124] ? fget+0x1b/0x20 [ 55.979220] vhost_net_ioctl+0x120a/0x1900 [ 55.983441] ? handle_rx_kick+0x50/0x50 [ 55.987507] ? __fget+0x340/0x540 [ 55.991038] ? __might_sleep+0x95/0x190 [ 55.994999] ? handle_rx_kick+0x50/0x50 [ 55.998960] do_vfs_ioctl+0xd5f/0x1380 [ 56.002838] ? selinux_file_ioctl+0x46f/0x5e0 [ 56.007318] ? selinux_file_ioctl+0x125/0x5e0 [ 56.011803] ? ioctl_preallocate+0x210/0x210 [ 56.016213] ? selinux_file_mprotect+0x620/0x620 [ 56.020953] ? iterate_fd+0x360/0x360 [ 56.024751] ? nsecs_to_jiffies+0x30/0x30 [ 56.028902] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.034423] ? security_file_ioctl+0x8d/0xc0 [ 56.038816] ksys_ioctl+0xab/0xd0 [ 56.042253] __x64_sys_ioctl+0x73/0xb0 [ 56.046149] do_syscall_64+0xfd/0x620 [ 56.049936] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.055106] RIP: 0033:0x45a219 [ 56.058286] Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 56.077283] RSP: 002b:00007febeb5c8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 56.084983] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 [ 56.092237] RDX: 0000000020d7c000 RSI: 000000004008af30 RDI: 0000000000000003 [ 56.099515] RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000 [ 56.106771] R10: 0000000000000000 R11: 0000000000000246 R12: 00007febeb5c96d4 [ 56.114111] R13: 00000000004c56ed R14: 00000000004da738 R15: 00000000ffffffff [ 56.122765] Kernel Offset: disabled [ 56.126404] Rebooting in 86400 seconds..