[....] Starting enhanced syslogd: rsyslogd[ 16.630407] audit: type=1400 audit(1519099140.660:5): avc: denied { syslog } for pid=4017 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: [ 19.208207] audit: type=1400 audit(1519099143.238:6): avc: denied { map } for pid=4156 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 '10.128.15.212' (ECDSA) to the list of known hosts. [ 25.567580] audit: type=1400 audit(1519099149.597:7): avc: denied { map } for pid=4170 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/02/20 03:59:09 parsed 1 programs 2018/02/20 03:59:09 executed programs: 0 [ 25.830828] audit: type=1400 audit(1519099149.859:8): avc: denied { map } for pid=4170 comm="syz-execprog" path="/root/syzkaller-shm399131677" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 25.842944] IPVS: ftp: loaded support on port[0] = 21 [ 26.076729] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 26.467290] WARNING: CPU: 0 PID: 4304 at net/ipv4/tcp_input.c:2199 tcp_mark_head_lost+0x770/0x8f0 [ 26.476391] Kernel panic - not syncing: panic_on_warn set ... [ 26.476391] [ 26.483735] CPU: 0 PID: 4304 Comm: syz-executor0 Not tainted 4.16.0-rc2+ #230 [ 26.490979] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.500306] Call Trace: [ 26.502875] dump_stack+0x194/0x257 [ 26.506483] ? arch_local_irq_restore+0x53/0x53 [ 26.511129] ? vsnprintf+0x1ed/0x1900 [ 26.514908] panic+0x1e4/0x41c [ 26.518123] ? refcount_error_report+0x214/0x214 [ 26.522861] ? show_regs_print_info+0x18/0x18 [ 26.527349] ? __warn+0x1c1/0x200 [ 26.530790] ? tcp_mark_head_lost+0x770/0x8f0 [ 26.535267] __warn+0x1dc/0x200 [ 26.538524] ? tcp_mark_head_lost+0x770/0x8f0 [ 26.542996] report_bug+0x211/0x2d0 [ 26.546608] fixup_bug.part.11+0x37/0x80 [ 26.550642] do_error_trap+0x2d7/0x3e0 [ 26.554504] ? tcp_sacktag_one+0x16b/0x910 [ 26.558715] ? math_error+0x400/0x400 [ 26.562497] ? tcp_skb_mark_lost_uncond_verify+0x16b/0x230 [ 26.568098] ? tcp_rack_detect_loss+0x2a2/0x8d0 [ 26.572760] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.577582] do_invalid_op+0x1b/0x20 [ 26.581277] invalid_op+0x58/0x80 [ 26.585425] RIP: 0010:tcp_mark_head_lost+0x770/0x8f0 [ 26.590509] RSP: 0018:ffff8801b39a7530 EFLAGS: 00010293 [ 26.595845] RAX: ffff8801b1e34700 RBX: 0000000000000004 RCX: ffffffff849c1520 [ 26.603088] RDX: 0000000000000000 RSI: ffff8801b565bd1c RDI: ffff8801b565bdb4 [ 26.610331] RBP: ffff8801b39a75b0 R08: ffff8801b565bc88 R09: ffff8801b39a7920 [ 26.617575] R10: 0000000000000003 R11: 0000000000000000 R12: ffff8801b565b500 [ 26.624819] R13: dffffc0000000000 R14: ffff8801af579ab5 R15: 0000000000000000 [ 26.632077] ? tcp_mark_head_lost+0x770/0x8f0 [ 26.636567] tcp_fastretrans_alert+0xe85/0x2260 [ 26.641217] tcp_ack+0x2b5c/0x51a0 [ 26.644756] ? tcp_fastretrans_alert+0x2260/0x2260 [ 26.649665] ? check_noncircular+0x20/0x20 [ 26.653877] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 26.659061] ? tcp_parse_options+0x188/0xa10 [ 26.663455] ? sched_clock+0x31/0x40 [ 26.667154] tcp_rcv_state_process+0xc24/0x4840 [ 26.671806] ? tcp_finish_connect+0x420/0x420 [ 26.676281] ? __release_sock+0xca/0x360 [ 26.680323] ? lock_downgrade+0x980/0x980 [ 26.684446] ? __lock_is_held+0xb6/0x140 [ 26.688491] ? mark_held_locks+0xaf/0x100 [ 26.692616] ? __local_bh_enable_ip+0x121/0x230 [ 26.697269] tcp_v4_do_rcv+0x55c/0x7d0 [ 26.701129] ? tcp_v4_do_rcv+0x55c/0x7d0 [ 26.705168] __release_sock+0x124/0x360 [ 26.709128] release_sock+0xa4/0x2a0 [ 26.712819] ? __release_sock+0x360/0x360 [ 26.716941] ? lock_sock_nested+0x91/0x110 [ 26.721150] ? trace_hardirqs_on+0xd/0x10 [ 26.725285] ? __local_bh_enable_ip+0x121/0x230 [ 26.729929] ? tcp_set_state+0x830/0x830 [ 26.733963] ? tcp_set_state+0x830/0x830 [ 26.738000] inet_shutdown+0x1a8/0x350 [ 26.741874] SyS_shutdown+0x137/0x290 [ 26.745653] ? SyS_getsockopt+0x340/0x340 [ 26.749771] ? sock_common_setsockopt+0xd0/0xd0 [ 26.754418] ? scm_detach_fds_compat+0x3c0/0x3c0 [ 26.759151] ? do_fast_syscall_32+0x156/0xf9f [ 26.763623] ? SyS_getsockopt+0x340/0x340 [ 26.767746] do_fast_syscall_32+0x3ec/0xf9f [ 26.772052] ? do_int80_syscall_32+0x9c0/0x9c0 [ 26.776608] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.781344] ? syscall_return_slowpath+0x2ac/0x550 [ 26.786249] ? prepare_exit_to_usermode+0x350/0x350 [ 26.791242] ? sysret32_from_system_call+0x5/0x3c [ 26.796067] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.800979] entry_SYSENTER_compat+0x70/0x7f [ 26.805361] RIP: 0023:0xf7f3cc79 [ 26.808707] RSP: 002b:00000000ffc5479c EFLAGS: 00000286 ORIG_RAX: 0000000000000175 [ 26.816389] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000001 [ 26.823634] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.830885] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 26.838132] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 26.845376] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 26.853368] Dumping ftrace buffer: [ 26.857033] (ftrace buffer empty) [ 26.860721] Kernel Offset: disabled [ 26.864327] Rebooting in 86400 seconds..