[....] Starting enhanced syslogd: rsyslogd[ 10.200942] audit: type=1400 audit(1514255921.389:5): avc: denied { syslog } for pid=2992 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 12.585168] audit: type=1400 audit(1514255923.773:6): avc: denied { map } for pid=3130 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 'ci-upstream-next-kasan-gce-5,10.128.15.194' (ECDSA) to the list of known hosts. [ 21.763294] audit: type=1400 audit(1514255932.952:7): avc: denied { map } for pid=3145 comm="syzkaller893599" path="/root/syzkaller893599695" 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 [ 21.789281] audit: type=1400 audit(1514255932.952:8): avc: denied { sys_admin } for pid=3145 comm="syzkaller893599" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 executing program [ 21.815867] audit: type=1400 audit(1514255933.004:9): avc: denied { sys_chroot } for pid=3146 comm="syzkaller893599" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 21.824120] device syz0 entered promiscuous mode [ 21.845195] audit: type=1400 audit(1514255933.004:10): avc: denied { net_raw } for pid=3146 comm="syzkaller893599" capability=13 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 21.847570] kasan: CONFIG_KASAN_INLINE enabled [ 21.847574] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 21.847583] general protection fault: 0000 [#1] SMP KASAN [ 21.847589] Dumping ftrace buffer: [ 21.847593] (ftrace buffer empty) [ 21.847596] Modules linked in: [ 21.847606] CPU: 0 PID: 3146 Comm: syzkaller893599 Not tainted 4.15.0-rc4-next-20171221+ #78 [ 21.847610] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.847625] RIP: 0010:skb_segment+0x667/0x2fe0 [ 21.847628] RSP: 0018:ffff8801c84069b8 EFLAGS: 00010206 [ 21.847633] RAX: 000000000000000f RBX: 0000000000000000 RCX: ffffffff842bf915 [ 21.847637] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000078 [ 21.847641] RBP: ffff8801c8406c70 R08: 0000000000000020 R09: 0000000000000002 [ 21.847644] R10: ffff8801c8406cf8 R11: 0000000000000000 R12: 0000000000000008 [ 21.847648] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8801c8a57700 [ 21.847654] FS: 0000000001d63880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 21.847657] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.847661] CR2: 0000000020217f75 CR3: 00000001c8ad4002 CR4: 00000000001606f0 [ 21.847667] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.847671] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.847672] Call Trace: [ 21.847704] ? pskb_extract+0x1b0/0x1b0 [ 21.847713] ? check_noncircular+0x20/0x20 [ 21.847724] ? check_noncircular+0x20/0x20 [ 21.847732] ? print_irqtrace_events+0x270/0x270 [ 21.847742] ? check_noncircular+0x20/0x20 [ 21.847750] ? check_noncircular+0x20/0x20 [ 21.847757] ? find_held_lock+0x35/0x1d0 [ 21.847775] sctp_gso_segment+0x213/0x890 [ 21.847785] ? sctp_csum_update+0x30/0x30 [ 21.847796] ? sctp_csum_update+0x30/0x30 [ 21.847808] inet_gso_segment+0x609/0x11b0 [ 21.847821] ? inet_sock_destruct+0x950/0x950 [ 21.847829] ? print_irqtrace_events+0x270/0x270 [ 21.847841] skb_mac_gso_segment+0x33f/0x660 [ 21.847850] ? inet_sock_destruct+0x950/0x950 [ 21.847856] ? skb_network_protocol+0x490/0x490 [ 21.847873] ? skb_network_protocol+0xef/0x490 [ 21.847884] __skb_gso_segment+0x363/0x810 [ 21.847892] ? skb_mac_gso_segment+0x660/0x660 [ 21.847899] ? find_held_lock+0x35/0x1d0 [ 21.847911] validate_xmit_skb+0x4ba/0xb20 [ 21.847920] ? netif_skb_features+0x8e0/0x8e0 [ 21.847927] ? lock_release+0xa40/0xa40 [ 21.847935] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 21.847946] validate_xmit_skb_list+0xb7/0x120 [ 21.847957] sch_direct_xmit+0x38e/0x920 [ 21.847966] ? pfifo_fast_reset+0x490/0x490 [ 21.847980] __qdisc_run+0x571/0x1930 [ 21.847994] ? sch_direct_xmit+0x920/0x920 [ 21.847999] ? lock_release+0xa40/0xa40 [ 21.848009] ? __dev_queue_xmit+0x262/0x2200 [ 21.848016] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 21.848034] ? pfifo_fast_enqueue+0x2a0/0x420 [ 21.848045] __dev_queue_xmit+0x89e/0x2200 [ 21.848058] ? netdev_pick_tx+0x300/0x300 [ 21.848067] ? lock_release+0xa40/0xa40 [ 21.848073] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 21.848080] ? refcount_add+0x24/0x60 [ 21.848087] ? skb_set_owner_w+0x232/0x330 [ 21.848097] ? __might_sleep+0x95/0x190 [ 21.848106] ? kasan_check_write+0x14/0x20 [ 21.848113] ? copyin+0x91/0xb0 [ 21.848123] ? _copy_from_iter+0x367/0xf30 [ 21.848130] ? __check_object_size+0x25d/0x4f0 [ 21.848139] ? check_stack_object+0x140/0x140 [ 21.848150] ? copy_page_to_iter+0xe10/0xe10 [ 21.848158] ? _copy_from_iter_full+0x22b/0xbb0 [ 21.848171] ? skb_copy_datagram_from_iter+0x3a5/0x5a0 [ 21.848178] ? iov_iter_advance+0x13f0/0x13f0 [ 21.848190] dev_queue_xmit+0x17/0x20 [ 21.848198] packet_sendmsg+0x3ad5/0x60a0 [ 21.848206] ? find_held_lock+0x35/0x1d0 [ 21.848220] ? avc_has_perm+0x35e/0x680 [ 21.848240] ? packet_cached_dev_get+0x2b0/0x2b0 [ 21.848245] ? mark_held_locks+0xaf/0x100 [ 21.848255] ? avc_has_perm+0x43e/0x680 [ 21.848265] ? avc_has_perm_noaudit+0x520/0x520 [ 21.848279] ? locks_remove_posix+0x518/0x820 [ 21.848290] ? find_held_lock+0x35/0x1d0 [ 21.848301] ? avc_has_perm+0x35e/0x680 [ 21.848311] ? sock_has_perm+0x2a4/0x420 [ 21.848319] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 21.848341] ? selinux_socket_sendmsg+0x36/0x40 [ 21.848350] ? security_socket_sendmsg+0x89/0xb0 [ 21.848356] ? packet_cached_dev_get+0x2b0/0x2b0 [ 21.848365] sock_sendmsg+0xca/0x110 [ 21.848373] sock_write_iter+0x31a/0x5d0 [ 21.848382] ? sock_sendmsg+0x110/0x110 [ 21.848397] ? iov_iter_init+0xaf/0x1d0 [ 21.848407] __vfs_write+0x684/0x970 [ 21.848416] ? kernel_read+0x120/0x120 [ 21.848421] ? bpf_fd_pass+0x280/0x280 [ 21.848436] ? _cond_resched+0x14/0x30 [ 21.848448] ? selinux_file_permission+0x82/0x460 [ 21.848462] ? rw_verify_area+0xe5/0x2b0 [ 21.848467] ? __fdget_raw+0x20/0x20 [ 21.848476] vfs_write+0x189/0x510 [ 21.848486] SyS_write+0xef/0x220 [ 21.848495] ? SyS_read+0x220/0x220 [ 21.848501] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 21.848511] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 21.848523] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 21.848527] RIP: 0033:0x444b69 [ 21.848530] RSP: 002b:00000000007eff78 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 21.848537] RAX: ffffffffffffffda RBX: 00007ffd1d8f0dc0 RCX: 0000000000444b69 [ 21.848540] RDX: 000000000000002a RSI: 0000000020217f75 RDI: 0000000000000005 [ 21.848544] RBP: 0000000000000000 R08: 0000000120080522 R09: 0000000120080522 [ 21.848547] R10: 0000000120080522 R11: 0000000000000293 R12: 0000000000402760 [ 21.848551] R13: 00000000004027f0 R14: 0000000000000000 R15: 0000000000000000 [ 21.848565] Code: 00 00 8b b5 1c fe ff ff 39 b5 30 fe ff ff 0f 8f 99 00 00 00 e8 cb 39 44 fd 48 8b 85 48 fe ff ff 48 8d 78 78 48 89 f8 48 c1 e8 03 <42> 0f b6 14 28 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f [ 21.848679] RIP: skb_segment+0x667/0x2fe0 RSP: ffff8801c84069b8 [ 21.848714] ---[ end trace 09ed07a53eb1df74 ]--- [ 21.848718] Kernel panic - not syncing: Fatal exception in interrupt [ 21.869900] Dumping ftrace buffer: [ 21.869904] (ftrace buffer empty) [ 21.869907] Kernel Offset: disabled [ 22.443112] Rebooting in 86400 seconds..