[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 31.439864] random: sshd: uninitialized urandom read (32 bytes read) [ 31.694610] kauditd_printk_skb: 9 callbacks suppressed [ 31.694618] audit: type=1400 audit(1572084671.523:35): avc: denied { map } for pid=6869 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 [ 31.751158] random: sshd: uninitialized urandom read (32 bytes read) [ 32.296751] random: sshd: uninitialized urandom read (32 bytes read) [ 32.489414] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.164' (ECDSA) to the list of known hosts. [ 37.966215] random: sshd: uninitialized urandom read (32 bytes read) 2019/10/26 10:11:18 parsed 1 programs [ 38.145424] audit: type=1400 audit(1572084677.973:36): avc: denied { map } for pid=6883 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 [ 38.216254] audit: type=1400 audit(1572084678.043:37): avc: denied { map } for pid=6883 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=13802 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 39.038154] random: cc1: uninitialized urandom read (8 bytes read) 2019/10/26 10:11:19 executed programs: 0 [ 40.097489] audit: type=1400 audit(1572084679.923:38): avc: denied { map } for pid=6883 comm="syz-execprog" path="/root/syzkaller-shm399072181" dev="sda1" ino=16486 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 40.370948] IPVS: ftp: loaded support on port[0] = 21 [ 41.214395] chnl_net:caif_netlink_parms(): no params data found [ 41.244006] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.250867] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.258036] device bridge_slave_0 entered promiscuous mode [ 41.265081] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.271806] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.278651] device bridge_slave_1 entered promiscuous mode [ 41.292913] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.301870] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.317262] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 41.324794] team0: Port device team_slave_0 added [ 41.330428] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 41.341582] team0: Port device team_slave_1 added [ 41.346737] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 41.354314] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 41.402132] device hsr_slave_0 entered promiscuous mode [ 41.440412] device hsr_slave_1 entered promiscuous mode [ 41.480666] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 41.487601] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 41.500756] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.507780] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.514819] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.521203] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.547031] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 41.553919] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.562354] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 41.571221] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 41.579537] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.588438] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.597504] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 41.603994] 8021q: adding VLAN 0 to HW filter on device team0 [ 41.613341] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 41.621002] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.627602] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.637401] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 41.645045] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.651412] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.670893] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 41.678820] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 41.687377] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 41.695275] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 41.702833] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 41.711527] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 41.717563] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 41.729210] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 41.738796] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 42.210527] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready 2019/10/26 10:11:24 executed programs: 167 2019/10/26 10:11:29 executed programs: 558 [ 52.290700] BUG: unable to handle kernel NULL pointer dereference at 0000000000000268 [ 52.298720] IP: rxrpc_send_data_packet+0xc8/0x13f0 [ 52.303634] PGD 99129067 P4D 99129067 PUD 845a6067 PMD 0 [ 52.309409] Oops: 0002 [#1] PREEMPT SMP KASAN [ 52.314011] Modules linked in: [ 52.317188] CPU: 1 PID: 6906 Comm: kworker/1:3 Not tainted 4.14.150 #0 [ 52.323847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.333212] Workqueue: krxrpcd rxrpc_process_call [ 52.338040] task: ffff88808b1f2580 task.stack: ffff8880a0ef0000 [ 52.344087] RIP: 0010:rxrpc_send_data_packet+0xc8/0x13f0 [ 52.349648] RSP: 0018:ffff8880a0ef7ab0 EFLAGS: 00010246 [ 52.355010] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 1ffff1101163e5c9 [ 52.362363] RDX: 0000000000000000 RSI: ffff8880a894a080 RDI: ffff8880a4c93010 [ 52.369738] RBP: ffff8880a0ef7c60 R08: 0000000000000001 R09: ffff88808b1f2e48 [ 52.377135] R10: ffff8880a0ef7c78 R11: 0000000000000000 R12: ffff8880a894a080 [ 52.384397] R13: ffff8880a4c93118 R14: ffff8880a4c93000 R15: ffff8880a894a080 [ 52.391802] FS: 0000000000000000(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 52.400022] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.405982] CR2: 0000000000000268 CR3: 0000000088b74000 CR4: 00000000001406e0 [ 52.413398] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.420663] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.427927] Call Trace: [ 52.430501] ? __schedule+0x7c0/0x1cd0 [ 52.434641] ? rxrpc_send_abort_packet+0x4d0/0x4d0 [ 52.439716] ? pci_mmcfg_check_reserved+0x150/0x150 [ 52.444734] ? preempt_schedule+0x4b/0x60 [ 52.448926] ? preempt_schedule_common+0x4f/0xe0 [ 52.453692] ? rxrpc_process_call+0x55e/0x1169 [ 52.458281] ? preempt_schedule+0x4b/0x60 [ 52.462434] ? ___preempt_schedule+0x16/0x18 [ 52.467004] rxrpc_process_call+0x56f/0x1169 [ 52.471522] ? rxrpc_process_call+0x56f/0x1169 [ 52.476100] ? check_preemption_disabled+0x3c/0x250 [ 52.481132] process_one_work+0x863/0x1600 [ 52.485370] ? pwq_dec_nr_in_flight+0x2e0/0x2e0 [ 52.490040] worker_thread+0x5d9/0x1050 [ 52.494015] kthread+0x319/0x430 [ 52.497360] ? process_one_work+0x1600/0x1600 [ 52.501852] ? kthread_create_on_node+0xd0/0xd0 [ 52.506536] ret_from_fork+0x24/0x30 [ 52.510254] Code: f3 c7 40 24 f3 f3 f3 f3 e8 76 3e c6 fb 49 8d 7e 10 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 31 11 00 00 49 8b 5e 10 b8 01 00 00 00 0f c1 83 68 02 00 00 83 c0 01 48 89 da 48 c1 ea 03 89 85 8c [ 52.529375] RIP: rxrpc_send_data_packet+0xc8/0x13f0 RSP: ffff8880a0ef7ab0 [ 52.536586] CR2: 0000000000000268 [ 52.540029] ---[ end trace 8854114da3ff37d4 ]--- [ 52.545475] Kernel panic - not syncing: Fatal exception [ 52.552337] Kernel Offset: disabled [ 52.555960] Rebooting in 86400 seconds..