[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 83.513217][ T31] audit: type=1800 audit(1574958165.561:25): pid=12000 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 83.536923][ T31] audit: type=1800 audit(1574958165.581:26): pid=12000 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 83.574358][ T31] audit: type=1800 audit(1574958165.611:27): pid=12000 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.36' (ECDSA) to the list of known hosts. 2019/11/28 16:22:57 parsed 1 programs 2019/11/28 16:23:04 executed programs: 0 syzkaller login: [ 102.166358][T12166] IPVS: ftp: loaded support on port[0] = 21 [ 102.247744][T12166] chnl_net:caif_netlink_parms(): no params data found [ 102.282763][T12166] bridge0: port 1(bridge_slave_0) entered blocking state [ 102.290226][T12166] bridge0: port 1(bridge_slave_0) entered disabled state [ 102.298737][T12166] device bridge_slave_0 entered promiscuous mode [ 102.307180][T12166] bridge0: port 2(bridge_slave_1) entered blocking state [ 102.314544][T12166] bridge0: port 2(bridge_slave_1) entered disabled state [ 102.323313][T12166] device bridge_slave_1 entered promiscuous mode [ 102.345151][T12166] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 102.356675][T12166] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 102.380574][T12166] team0: Port device team_slave_0 added [ 102.388542][T12166] team0: Port device team_slave_1 added [ 102.445182][T12166] device hsr_slave_0 entered promiscuous mode [ 102.482541][T12166] device hsr_slave_1 entered promiscuous mode [ 102.595316][T12166] bridge0: port 2(bridge_slave_1) entered blocking state [ 102.602643][T12166] bridge0: port 2(bridge_slave_1) entered forwarding state [ 102.610386][T12166] bridge0: port 1(bridge_slave_0) entered blocking state [ 102.617816][T12166] bridge0: port 1(bridge_slave_0) entered forwarding state [ 102.785211][T12166] 8021q: adding VLAN 0 to HW filter on device bond0 [ 102.824670][ T525] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 102.854012][ T525] bridge0: port 1(bridge_slave_0) entered disabled state [ 102.882332][ T525] bridge0: port 2(bridge_slave_1) entered disabled state [ 102.914265][ T525] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 102.960017][T12166] 8021q: adding VLAN 0 to HW filter on device team0 [ 103.014807][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 103.023993][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.031264][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 103.137287][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 103.146908][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.154186][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 103.164385][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 103.174521][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 103.184137][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 103.211180][T12166] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 103.224042][T12166] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 103.302647][T12166] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 103.323843][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 103.331552][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 103.340938][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 103.350750][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 103.918157][T12250] ===================================================== [ 103.925423][T12250] BUG: KMSAN: use-after-free in __list_add_valid+0x292/0x430 [ 103.932844][T12250] CPU: 0 PID: 12250 Comm: syz-executor.0 Not tainted 5.4.0-rc8-syzkaller #0 [ 103.942620][T12250] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 103.952660][T12250] Call Trace: [ 103.955946][T12250] dump_stack+0x1c9/0x220 [ 103.960392][T12250] kmsan_report+0x128/0x220 [ 103.964916][T12250] __msan_warning+0x64/0xc0 [ 103.969434][T12250] __list_add_valid+0x292/0x430 [ 103.974297][T12250] rdma_listen+0x623/0x10b0 [ 103.978909][T12250] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 103.984897][T12250] ucma_listen+0x36e/0x5e0 [ 103.989307][T12250] ? ucma_connect+0xa40/0xa40 [ 103.993969][T12250] ucma_write+0x5c5/0x640 [ 103.998299][T12250] ? ucma_get_global_nl_info+0xe0/0xe0 [ 104.003804][T12250] __vfs_write+0x1a9/0xcb0 [ 104.008338][T12250] ? rw_verify_area+0x3a5/0x5e0 [ 104.013182][T12250] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 104.019167][T12250] vfs_write+0x481/0x920 [ 104.023554][T12250] ksys_write+0x265/0x430 [ 104.027993][T12250] __se_sys_write+0x92/0xb0 [ 104.032592][T12250] __x64_sys_write+0x4a/0x70 [ 104.037189][T12250] do_syscall_64+0xb6/0x160 [ 104.041683][T12250] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 104.047581][T12250] RIP: 0033:0x45a679 [ 104.053466][T12250] 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 [ 104.073181][T12250] RSP: 002b:00007fad2bcfec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 104.081598][T12250] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a679 [ 104.089558][T12250] RDX: 0000000000000010 RSI: 00000000200001c0 RDI: 0000000000000003 [ 104.097534][T12250] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 104.105503][T12250] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fad2bcff6d4 [ 104.114605][T12250] R13: 00000000004cafa9 R14: 00000000004e3c38 R15: 00000000ffffffff [ 104.122569][T12250] [ 104.124877][T12250] Uninit was created at: [ 104.129113][T12250] kmsan_internal_poison_shadow+0x5c/0x110 [ 104.134908][T12250] kmsan_slab_free+0x7a/0xe0 [ 104.139479][T12250] kfree+0x7d0/0x2f10 [ 104.143453][T12250] rdma_destroy_id+0x1c10/0x1c80 [ 104.148392][T12250] ucma_close+0x344/0x4c0 [ 104.152721][T12250] __fput+0x4c9/0xba0 [ 104.156699][T12250] ____fput+0x37/0x40 [ 104.160663][T12250] task_work_run+0x22e/0x2a0 [ 104.165252][T12250] prepare_exit_to_usermode+0x39d/0x4d0 [ 104.170776][T12250] syscall_return_slowpath+0x90/0x610 [ 104.176137][T12250] do_syscall_64+0xdc/0x160 [ 104.180632][T12250] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 104.186509][T12250] ===================================================== [ 104.193433][T12250] Disabling lock debugging due to kernel taint [ 104.199567][T12250] Kernel panic - not syncing: panic_on_warn set ... [ 104.206139][T12250] CPU: 0 PID: 12250 Comm: syz-executor.0 Tainted: G B 5.4.0-rc8-syzkaller #0 [ 104.216174][T12250] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.226225][T12250] Call Trace: [ 104.229509][T12250] dump_stack+0x1c9/0x220 [ 104.233839][T12250] panic+0x3c9/0xc1e [ 104.237743][T12250] kmsan_report+0x215/0x220 [ 104.242250][T12250] __msan_warning+0x64/0xc0 [ 104.246737][T12250] __list_add_valid+0x292/0x430 [ 104.251574][T12250] rdma_listen+0x623/0x10b0 [ 104.256070][T12250] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 104.262132][T12250] ucma_listen+0x36e/0x5e0 [ 104.266551][T12250] ? ucma_connect+0xa40/0xa40 [ 104.271212][T12250] ucma_write+0x5c5/0x640 [ 104.275556][T12250] ? ucma_get_global_nl_info+0xe0/0xe0 [ 104.281014][T12250] __vfs_write+0x1a9/0xcb0 [ 104.285418][T12250] ? rw_verify_area+0x3a5/0x5e0 [ 104.290252][T12250] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 104.296147][T12250] vfs_write+0x481/0x920 [ 104.300462][T12250] ksys_write+0x265/0x430 [ 104.304801][T12250] __se_sys_write+0x92/0xb0 [ 104.309303][T12250] __x64_sys_write+0x4a/0x70 [ 104.313896][T12250] do_syscall_64+0xb6/0x160 [ 104.318388][T12250] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 104.324266][T12250] RIP: 0033:0x45a679 [ 104.328146][T12250] 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 [ 104.347758][T12250] RSP: 002b:00007fad2bcfec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 104.356160][T12250] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a679 [ 104.364124][T12250] RDX: 0000000000000010 RSI: 00000000200001c0 RDI: 0000000000000003 [ 104.372085][T12250] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 104.380054][T12250] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fad2bcff6d4 [ 104.388036][T12250] R13: 00000000004cafa9 R14: 00000000004e3c38 R15: 00000000ffffffff [ 104.396726][T12250] ------------[ cut here ]------------ [ 104.402209][T12250] kernel BUG at mm/kmsan/kmsan.c:468! [ 104.407573][T12250] invalid opcode: 0000 [#1] SMP [ 104.412403][T12250] CPU: 0 PID: 12250 Comm: syz-executor.0 Tainted: G B 5.4.0-rc8-syzkaller #0 [ 104.422457][T12250] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.432523][T12250] RIP: 0010:kmsan_internal_check_memory+0x41d/0x440 [ 104.439286][T12250] Code: c0 e8 c4 a8 72 ff 0f 0b 0f 0b 65 8b 35 30 0c 5c 77 48 c7 c7 b4 05 c1 95 31 c0 e8 ab a8 72 ff 0f 0b 0f 0b e8 45 67 4e ff 0f 0b <0f> 0b 65 8b 35 0e 0c 5c 77 48 c7 c7 b4 05 c1 95 31 c0 e8 89 a8 72 [ 104.459027][T12250] RSP: 0018:ffffa43543e8f640 EFLAGS: 00010046 [ 104.465096][T12250] RAX: 0000000000000002 RBX: 00000000064200a8 RCX: 00000000064200a8 [ 104.473079][T12250] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffa43543e8f71c [ 104.481028][T12250] RBP: ffffa43543e8f6e8 R08: 0000000000000000 R09: ffff9f402fc41950 [ 104.488980][T12250] R10: 00000000ffffffff R11: ffffffff8ca796d0 R12: 0000000000000000 [ 104.496929][T12250] R13: 00000000064200a8 R14: 0000000000000002 R15: 0000000000000001 [ 104.504904][T12250] FS: 00007fad2bcff700(0000) GS:ffff9f402fc00000(0000) knlGS:0000000000000000 [ 104.513950][T12250] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 104.520522][T12250] CR2: 0000000000960004 CR3: 00000000b2a4d000 CR4: 00000000001406f0 [ 104.528482][T12250] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 104.536587][T12250] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 104.544603][T12250] Call Trace: [ 104.547906][T12250] kmsan_check_memory+0xd/0x10 [ 104.552670][T12250] iowrite8+0x99/0x2e0 [ 104.556743][T12250] ? pvpanic_mmio_remove+0x60/0x60 [ 104.561844][T12250] pvpanic_panic_notify+0x46/0x70 [ 104.566850][T12250] atomic_notifier_call_chain+0x13d/0x240 [ 104.572553][T12250] panic+0x45a/0xc1e [ 104.576438][T12250] kmsan_report+0x215/0x220 [ 104.580923][T12250] __msan_warning+0x64/0xc0 [ 104.585408][T12250] __list_add_valid+0x292/0x430 [ 104.590247][T12250] rdma_listen+0x623/0x10b0 [ 104.594730][T12250] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 104.600610][T12250] ucma_listen+0x36e/0x5e0 [ 104.605009][T12250] ? ucma_connect+0xa40/0xa40 [ 104.609664][T12250] ucma_write+0x5c5/0x640 [ 104.613976][T12250] ? ucma_get_global_nl_info+0xe0/0xe0 [ 104.619413][T12250] __vfs_write+0x1a9/0xcb0 [ 104.623812][T12250] ? rw_verify_area+0x3a5/0x5e0 [ 104.628646][T12250] ? kmsan_get_shadow_origin_ptr+0x91/0x4d0 [ 104.634536][T12250] vfs_write+0x481/0x920 [ 104.638769][T12250] ksys_write+0x265/0x430 [ 104.643102][T12250] __se_sys_write+0x92/0xb0 [ 104.647596][T12250] __x64_sys_write+0x4a/0x70 [ 104.652181][T12250] do_syscall_64+0xb6/0x160 [ 104.656668][T12250] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 104.662539][T12250] RIP: 0033:0x45a679 [ 104.666421][T12250] 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 [ 104.686099][T12250] RSP: 002b:00007fad2bcfec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 104.694498][T12250] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a679 [ 104.702476][T12250] RDX: 0000000000000010 RSI: 00000000200001c0 RDI: 0000000000000003 [ 104.710433][T12250] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 104.719078][T12250] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fad2bcff6d4 [ 104.727032][T12250] R13: 00000000004cafa9 R14: 00000000004e3c38 R15: 00000000ffffffff [ 104.734990][T12250] Modules linked in: [ 104.738868][T12250] ---[ end trace cf2bb973f6810741 ]--- [ 104.744318][T12250] RIP: 0010:kmsan_internal_check_memory+0x41d/0x440 [ 104.750885][T12250] Code: c0 e8 c4 a8 72 ff 0f 0b 0f 0b 65 8b 35 30 0c 5c 77 48 c7 c7 b4 05 c1 95 31 c0 e8 ab a8 72 ff 0f 0b 0f 0b e8 45 67 4e ff 0f 0b <0f> 0b 65 8b 35 0e 0c 5c 77 48 c7 c7 b4 05 c1 95 31 c0 e8 89 a8 72 [ 104.770497][T12250] RSP: 0018:ffffa43543e8f640 EFLAGS: 00010046 [ 104.776540][T12250] RAX: 0000000000000002 RBX: 00000000064200a8 RCX: 00000000064200a8 [ 104.784488][T12250] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffa43543e8f71c [ 104.792457][T12250] RBP: ffffa43543e8f6e8 R08: 0000000000000000 R09: ffff9f402fc41950 [ 104.800416][T12250] R10: 00000000ffffffff R11: ffffffff8ca796d0 R12: 0000000000000000 [ 104.808367][T12250] R13: 00000000064200a8 R14: 0000000000000002 R15: 0000000000000001 [ 104.816338][T12250] FS: 00007fad2bcff700(0000) GS:ffff9f402fc00000(0000) knlGS:0000000000000000 [ 104.825242][T12250] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 104.831804][T12250] CR2: 0000000000960004 CR3: 00000000b2a4d000 CR4: 00000000001406f0 [ 104.839759][T12250] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 104.847711][T12250] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 104.855837][T12250] Kernel panic - not syncing: Fatal exception [ 104.862732][T12250] Kernel Offset: 0x6a00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 104.874357][T12250] Rebooting in 86400 seconds..