[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 76.831735][ T30] audit: type=1800 audit(1570828843.872:25): pid=11161 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 76.862137][ T30] audit: type=1800 audit(1570828843.902:26): pid=11161 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 76.884503][ T30] audit: type=1800 audit(1570828843.912:27): pid=11161 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 '10.128.0.102' (ECDSA) to the list of known hosts. 2019/10/11 21:20:58 parsed 1 programs 2019/10/11 21:21:05 executed programs: 0 syzkaller login: [ 98.955794][T11326] IPVS: ftp: loaded support on port[0] = 21 [ 99.034312][T11326] chnl_net:caif_netlink_parms(): no params data found [ 99.070422][T11326] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.078031][T11326] bridge0: port 1(bridge_slave_0) entered disabled state [ 99.086502][T11326] device bridge_slave_0 entered promiscuous mode [ 99.094938][T11326] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.102409][T11326] bridge0: port 2(bridge_slave_1) entered disabled state [ 99.110947][T11326] device bridge_slave_1 entered promiscuous mode [ 99.131705][T11326] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 99.143557][T11326] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 99.168402][T11326] team0: Port device team_slave_0 added [ 99.176427][T11326] team0: Port device team_slave_1 added [ 99.254972][T11326] device hsr_slave_0 entered promiscuous mode [ 99.322818][T11326] device hsr_slave_1 entered promiscuous mode [ 99.383559][T11326] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.391004][T11326] bridge0: port 2(bridge_slave_1) entered forwarding state [ 99.398717][T11326] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.405907][T11326] bridge0: port 1(bridge_slave_0) entered forwarding state [ 99.453394][T11326] 8021q: adding VLAN 0 to HW filter on device bond0 [ 99.467735][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 99.477808][ T31] bridge0: port 1(bridge_slave_0) entered disabled state [ 99.487768][ T31] bridge0: port 2(bridge_slave_1) entered disabled state [ 99.496524][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 99.510687][T11326] 8021q: adding VLAN 0 to HW filter on device team0 [ 99.525569][ T3943] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 99.534383][ T3943] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.541502][ T3943] bridge0: port 1(bridge_slave_0) entered forwarding state [ 99.565020][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 99.574101][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.581243][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 99.590883][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 99.600868][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 99.615287][ T3943] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 99.633265][ T3943] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 99.642437][ T3943] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 99.655910][T11326] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 99.679702][T11326] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 100.150176][T11400] ===================================================== [ 100.157145][T11400] BUG: KMSAN: use-after-free in rdma_listen+0x623/0x10b0 [ 100.164153][T11400] CPU: 0 PID: 11400 Comm: syz-executor.0 Not tainted 5.4.0-rc2+ #0 [ 100.172030][T11400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.182088][T11400] Call Trace: [ 100.185389][T11400] dump_stack+0x191/0x1f0 [ 100.189982][T11400] kmsan_report+0x14c/0x2c0 [ 100.194476][T11400] __msan_warning+0x73/0xe0 [ 100.198964][T11400] __list_add_valid+0x292/0x430 [ 100.203818][T11400] rdma_listen+0x623/0x10b0 [ 100.208333][T11400] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 100.214223][T11400] ucma_listen+0x36e/0x5e0 [ 100.218637][T11400] ? ucma_connect+0xa40/0xa40 [ 100.223305][T11400] ucma_write+0x5c5/0x640 [ 100.228500][T11400] ? ucma_get_global_nl_info+0xe0/0xe0 [ 100.234109][T11400] __vfs_write+0x1a9/0xcb0 [ 100.238522][T11400] ? rw_verify_area+0x3a5/0x5e0 [ 100.243364][T11400] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 100.249248][T11400] vfs_write+0x481/0x920 [ 100.253503][T11400] ksys_write+0x265/0x430 [ 100.257834][T11400] __se_sys_write+0x92/0xb0 [ 100.262337][T11400] __x64_sys_write+0x4a/0x70 [ 100.266931][T11400] do_syscall_64+0xb6/0x160 [ 100.271430][T11400] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 100.277321][T11400] RIP: 0033:0x459a59 [ 100.281224][T11400] Code: fd b7 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 b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 100.300817][T11400] RSP: 002b:00007f46dec4dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 100.309229][T11400] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59 [ 100.317199][T11400] RDX: 0000000000000010 RSI: 00000000200001c0 RDI: 0000000000000003 [ 100.325159][T11400] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 100.333116][T11400] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f46dec4e6d4 [ 100.341309][T11400] R13: 00000000004c9c72 R14: 00000000004e1778 R15: 00000000ffffffff [ 100.349272][T11400] [ 100.351579][T11400] Uninit was created at: [ 100.355809][T11400] kmsan_internal_poison_shadow+0x60/0x120 [ 100.361596][T11400] kmsan_slab_free+0x8d/0x100 [ 100.366271][T11400] kfree+0x4c1/0x2db0 [ 100.370232][T11400] rdma_destroy_id+0x1c10/0x1c80 [ 100.375169][T11400] ucma_close+0x344/0x4c0 [ 100.379477][T11400] __fput+0x4c9/0xba0 [ 100.383435][T11400] ____fput+0x37/0x40 [ 100.387397][T11400] task_work_run+0x22e/0x2a0 [ 100.391968][T11400] prepare_exit_to_usermode+0x39d/0x4d0 [ 100.397498][T11400] syscall_return_slowpath+0x90/0x610 [ 100.402849][T11400] do_syscall_64+0xdc/0x160 [ 100.407336][T11400] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 100.413207][T11400] ===================================================== [ 100.420126][T11400] Disabling lock debugging due to kernel taint [ 100.426254][T11400] Kernel panic - not syncing: panic_on_warn set ... [ 100.432822][T11400] CPU: 0 PID: 11400 Comm: syz-executor.0 Tainted: G B 5.4.0-rc2+ #0 [ 100.442083][T11400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.452132][T11400] Call Trace: [ 100.455411][T11400] dump_stack+0x191/0x1f0 [ 100.459722][T11400] panic+0x3c9/0xc1e [ 100.463637][T11400] kmsan_report+0x2b4/0x2c0 [ 100.468127][T11400] __msan_warning+0x73/0xe0 [ 100.472621][T11400] __list_add_valid+0x292/0x430 [ 100.477555][T11400] rdma_listen+0x623/0x10b0 [ 100.482851][T11400] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 100.488907][T11400] ucma_listen+0x36e/0x5e0 [ 100.493327][T11400] ? ucma_connect+0xa40/0xa40 [ 100.497998][T11400] ucma_write+0x5c5/0x640 [ 100.502332][T11400] ? ucma_get_global_nl_info+0xe0/0xe0 [ 100.507804][T11400] __vfs_write+0x1a9/0xcb0 [ 100.512206][T11400] ? rw_verify_area+0x3a5/0x5e0 [ 100.517058][T11400] ? kmsan_get_shadow_origin_ptr+0x6e/0x4c0 [ 100.523064][T11400] vfs_write+0x481/0x920 [ 100.527304][T11400] ksys_write+0x265/0x430 [ 100.531622][T11400] __se_sys_write+0x92/0xb0 [ 100.536131][T11400] __x64_sys_write+0x4a/0x70 [ 100.540707][T11400] do_syscall_64+0xb6/0x160 [ 100.545196][T11400] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 100.551071][T11400] RIP: 0033:0x459a59 [ 100.554946][T11400] Code: fd b7 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 b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 100.574537][T11400] RSP: 002b:00007f46dec4dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 100.582951][T11400] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59 [ 100.590907][T11400] RDX: 0000000000000010 RSI: 00000000200001c0 RDI: 0000000000000003 [ 100.598862][T11400] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 100.606816][T11400] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f46dec4e6d4 [ 100.614769][T11400] R13: 00000000004c9c72 R14: 00000000004e1778 R15: 00000000ffffffff [ 100.624310][T11400] Kernel Offset: disabled [ 100.628637][T11400] Rebooting in 86400 seconds..