[ 71.706194][ T26] audit: type=1800 audit(1567819075.513:32): pid=10403 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 75.852927][ T26] kauditd_printk_skb: 2 callbacks suppressed [ 75.852940][ T26] audit: type=1400 audit(1567819079.743:35): avc: denied { map } for pid=10579 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 '10.128.0.212' (ECDSA) to the list of known hosts. 2019/09/07 01:18:06 parsed 1 programs [ 82.263008][ T26] audit: type=1400 audit(1567819086.153:36): avc: denied { map } for pid=10591 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 82.332299][ T26] audit: type=1400 audit(1567819086.223:37): avc: denied { map } for pid=10591 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=4489 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2019/09/07 01:18:07 executed programs: 0 [ 83.908666][T10607] IPVS: ftp: loaded support on port[0] = 21 [ 83.957440][T10607] chnl_net:caif_netlink_parms(): no params data found [ 83.979617][T10607] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.986707][T10607] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.995672][T10607] device bridge_slave_0 entered promiscuous mode [ 84.003258][T10607] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.010370][T10607] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.017927][T10607] device bridge_slave_1 entered promiscuous mode [ 84.031944][T10607] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 84.042370][T10607] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 84.059168][T10607] team0: Port device team_slave_0 added [ 84.065644][T10607] team0: Port device team_slave_1 added [ 84.118923][T10607] device hsr_slave_0 entered promiscuous mode [ 84.157412][T10607] device hsr_slave_1 entered promiscuous mode [ 84.202880][T10607] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.209980][T10607] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.217321][T10607] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.224356][T10607] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.250799][T10607] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.261710][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 84.280192][ T3516] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.287773][ T3516] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.295309][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 84.305546][T10607] 8021q: adding VLAN 0 to HW filter on device team0 [ 84.314945][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 84.323478][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.330537][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.348430][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.356805][ T3516] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.363923][ T3516] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.371884][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 84.380808][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 84.389128][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 84.397521][ T3516] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 84.407758][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 84.417618][T10607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 84.433417][T10607] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.464331][ T26] audit: type=1400 audit(1567819088.353:38): avc: denied { associate } for pid=10607 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 [ 85.552559][T10798] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 85.560478][T10798] #PF: supervisor instruction fetch in kernel mode [ 85.566955][T10798] #PF: error_code(0x0010) - not-present page [ 85.572913][T10798] PGD 9bc98067 P4D 9bc98067 PUD a1c62067 PMD 0 [ 85.579135][T10798] Oops: 0010 [#1] PREEMPT SMP KASAN [ 85.584311][T10798] CPU: 1 PID: 10798 Comm: syz-executor.0 Not tainted 5.3.0-rc7+ #0 [ 85.592174][T10798] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.602221][T10798] RIP: 0010:0x0 [ 85.605688][T10798] Code: Bad RIP value. [ 85.609729][T10798] RSP: 0018:ffff88808a3074d8 EFLAGS: 00010246 [ 85.615769][T10798] RAX: dffffc0000000000 RBX: ffffffff882a51a0 RCX: ffffffff85b3fc56 [ 85.623717][T10798] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a495ae00 [ 85.631701][T10798] RBP: ffff88808a3075d0 R08: ffff8880980b8000 R09: ffff88808a307658 [ 85.639661][T10798] R10: ffffed1011460ed9 R11: ffff88808a3076cf R12: ffff8880a495ae00 [ 85.647627][T10798] R13: 0000000000000001 R14: ffff88808a3075a8 R15: ffffffff882a51a0 [ 85.655578][T10798] FS: 00007f1d5c6b5700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 85.664486][T10798] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.671061][T10798] CR2: ffffffffffffffd6 CR3: 0000000098120000 CR4: 00000000001406e0 [ 85.679011][T10798] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.686955][T10798] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.694907][T10798] Call Trace: [ 85.698203][T10798] tc_bind_tclass+0x13e/0x2f0 [ 85.702864][T10798] ? qdisc_class_hash_init+0x110/0x110 [ 85.708301][T10798] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.714517][T10798] ? ns_capable_common+0x93/0x100 [ 85.719517][T10798] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 85.725212][T10798] ? qdisc_match_from_root+0x18a/0x280 [ 85.730648][T10798] tc_ctl_tclass+0xadb/0xcd0 [ 85.735215][T10798] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 85.741001][T10798] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 85.746100][T10798] ? rtnetlink_rcv_msg+0x1ea/0xb00 [ 85.751190][T10798] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 85.757408][T10798] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 85.763190][T10798] rtnetlink_rcv_msg+0x463/0xb00 [ 85.768104][T10798] ? rtnetlink_put_metrics+0x580/0x580 [ 85.773550][T10798] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 85.778812][T10798] ? __copy_skb_header+0x250/0x550 [ 85.783899][T10798] netlink_rcv_skb+0x177/0x450 [ 85.788641][T10798] ? rtnetlink_put_metrics+0x580/0x580 [ 85.794087][T10798] ? netlink_ack+0xb30/0xb30 [ 85.798663][T10798] ? netlink_deliver_tap+0x254/0xbf0 [ 85.803940][T10798] rtnetlink_rcv+0x1d/0x30 [ 85.808340][T10798] netlink_unicast+0x531/0x710 [ 85.813088][T10798] ? netlink_attachskb+0x7c0/0x7c0 [ 85.818180][T10798] ? _copy_from_iter_full+0x25d/0x8a0 [ 85.823533][T10798] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.830261][T10798] netlink_sendmsg+0x8a5/0xd60 [ 85.835003][T10798] ? netlink_unicast+0x710/0x710 [ 85.839918][T10798] ? tomoyo_socket_sendmsg+0x26/0x30 [ 85.845188][T10798] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.851405][T10798] ? security_socket_sendmsg+0x8d/0xc0 [ 85.856850][T10798] ? netlink_unicast+0x710/0x710 [ 85.861774][T10798] sock_sendmsg+0xd7/0x130 [ 85.866168][T10798] ___sys_sendmsg+0x803/0x920 [ 85.870820][T10798] ? copy_msghdr_from_user+0x440/0x440 [ 85.876265][T10798] ? __fget+0xa3/0x560 [ 85.880310][T10798] ? __fget+0x384/0x560 [ 85.884451][T10798] ? ksys_dup3+0x3e0/0x3e0 [ 85.888841][T10798] ? __might_fault+0xfb/0x1e0 [ 85.893494][T10798] ? __fget_light+0x1a9/0x230 [ 85.898155][T10798] ? __fdget+0x1b/0x20 [ 85.902200][T10798] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 85.908417][T10798] __sys_sendmsg+0x105/0x1d0 [ 85.912983][T10798] ? __sys_sendmsg_sock+0xd0/0xd0 [ 85.917986][T10798] ? __x64_sys_clock_gettime+0x16d/0x240 [ 85.923596][T10798] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 85.929642][T10798] __x64_sys_sendmsg+0x78/0xb0 [ 85.934388][T10798] do_syscall_64+0xfd/0x6a0 [ 85.938867][T10798] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.944733][T10798] RIP: 0033:0x4598e9 [ 85.948606][T10798] 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 [ 85.968620][T10798] RSP: 002b:00007f1d5c6b4c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 85.977533][T10798] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 [ 85.985482][T10798] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 85.993441][T10798] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 86.001388][T10798] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1d5c6b56d4 [ 86.009334][T10798] R13: 00000000004c77fb R14: 00000000004dd098 R15: 00000000ffffffff [ 86.017284][T10798] Modules linked in: [ 86.021157][T10798] CR2: 0000000000000000 [ 86.026056][T10798] ---[ end trace 9f61dfcf826c6949 ]--- [ 86.031655][T10798] RIP: 0010:0x0 [ 86.035104][T10798] Code: Bad RIP value. [ 86.039205][T10798] RSP: 0018:ffff88808a3074d8 EFLAGS: 00010246 [ 86.045289][T10798] RAX: dffffc0000000000 RBX: ffffffff882a51a0 RCX: ffffffff85b3fc56 [ 86.053289][T10798] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a495ae00 [ 86.061329][T10798] RBP: ffff88808a3075d0 R08: ffff8880980b8000 R09: ffff88808a307658 [ 86.069314][T10798] R10: ffffed1011460ed9 R11: ffff88808a3076cf R12: ffff8880a495ae00 [ 86.077318][T10798] R13: 0000000000000001 R14: ffff88808a3075a8 R15: ffffffff882a51a0 [ 86.085363][T10798] FS: 00007f1d5c6b5700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 86.094300][T10798] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.100904][T10798] CR2: ffffffffffffffd6 CR3: 0000000098120000 CR4: 00000000001406e0 [ 86.108897][T10798] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 86.116860][T10798] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.125208][T10798] Kernel panic - not syncing: Fatal exception [ 86.132684][T10798] Kernel Offset: disabled [ 86.137004][T10798] Rebooting in 86400 seconds..