[....] Starting enhanced syslogd: rsyslogd[ 12.213894] audit: type=1400 audit(1515468902.819:5): avc: denied { syslog } for pid=3347 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: [ 18.959298] audit: type=1400 audit(1515468909.565:6): avc: denied { map } for pid=3488 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 '10.128.15.200' (ECDSA) to the list of known hosts. executing program [ 26.009383] audit: type=1400 audit(1515468916.615:7): avc: denied { map } for pid=3502 comm="syzkaller429298" path="/root/syzkaller429298163" 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 [ 26.013434] WARNING: CPU: 0 PID: 3502 at mm/slab_common.c:971 kmalloc_slab+0x5d/0x70 [ 26.013446] Kernel panic - not syncing: panic_on_warn set ... [ 26.013446] [ 26.013453] CPU: 0 PID: 3502 Comm: syzkaller429298 Not tainted 4.15.0-rc5+ #179 [ 26.013457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.013460] Call Trace: [ 26.013469] dump_stack+0x194/0x257 [ 26.013481] ? arch_local_irq_restore+0x53/0x53 [ 26.013496] ? vsnprintf+0x1ed/0x1900 [ 26.013515] panic+0x1e4/0x41c [ 26.013523] ? refcount_error_report+0x214/0x214 [ 26.013532] ? show_regs_print_info+0x18/0x18 [ 26.013550] ? __warn+0x1c1/0x200 [ 26.013563] ? kmalloc_slab+0x5d/0x70 [ 26.013569] __warn+0x1dc/0x200 [ 26.013578] ? kmalloc_slab+0x5d/0x70 [ 26.013591] report_bug+0x211/0x2d0 [ 26.013608] fixup_bug.part.11+0x37/0x80 [ 26.013618] do_error_trap+0x2d7/0x3e0 [ 26.013633] ? math_error+0x400/0x400 [ 26.013639] ? rcu_read_lock_held+0xa9/0xc0 [ 26.013648] ? xfrm_state_get_afinfo+0x138/0x280 [ 26.013673] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.013688] do_invalid_op+0x1b/0x20 [ 26.013696] invalid_op+0x22/0x40 [ 26.013703] RIP: 0010:kmalloc_slab+0x5d/0x70 [ 26.013706] RSP: 0018:ffff8801c9e8f450 EFLAGS: 00010246 [ 26.013713] RAX: 0000000000000000 RBX: ffff8801c07c7b40 RCX: ffffffff84ae0b0c [ 26.013717] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000fffffa60 [ 26.013722] RBP: ffff8801c9e8f450 R08: 0000000000000000 R09: 1ffff100393d1e4d [ 26.013726] R10: ffff8801c9e8f1a0 R11: 0000000000000001 R12: 00000000fffffa60 [ 26.013730] R13: 00000000fffffa60 R14: 00000000014080c0 R15: ffff8801c13a0000 [ 26.013749] ? xfrm_add_sa+0x1b6c/0x33e0 [ 26.013767] __kmalloc+0x25/0x760 [ 26.013774] ? xfrm_get_mode.part.29+0x260/0x260 [ 26.013780] ? xfrm_find_algo+0x1c4/0x270 [ 26.013792] ? xfrm_add_sa+0x1b79/0x33e0 [ 26.013808] xfrm_add_sa+0x1b79/0x33e0 [ 26.013834] ? xfrm_send_state_notify+0x1c50/0x1c50 [ 26.013843] ? nla_parse+0x29a/0x3d0 [ 26.013857] ? nla_validate+0x1c0/0x1c0 [ 26.013869] ? __netlink_ns_capable+0xe1/0x120 [ 26.013881] ? xfrm_send_state_notify+0x1c50/0x1c50 [ 26.013889] xfrm_user_rcv_msg+0x422/0x860 [ 26.013897] ? xfrm_user_rcv_msg+0x422/0x860 [ 26.013912] ? xfrm_dump_sa_done+0xe0/0xe0 [ 26.013920] ? lock_downgrade+0x980/0x980 [ 26.013933] ? lock_release+0xa40/0xa40 [ 26.013983] ? netlink_tap_init_net+0x350/0x350 [ 26.013998] netlink_rcv_skb+0x224/0x470 [ 26.014009] ? xfrm_dump_sa_done+0xe0/0xe0 [ 26.014020] ? netlink_ack+0xa10/0xa10 [ 26.014034] ? netlink_skb_destructor+0x1d0/0x1d0 [ 26.014053] xfrm_netlink_rcv+0x6f/0x90 [ 26.014062] netlink_unicast+0x4c4/0x6b0 [ 26.014079] ? netlink_attachskb+0x8a0/0x8a0 [ 26.014096] ? security_netlink_send+0x81/0xb0 [ 26.014109] netlink_sendmsg+0xa4a/0xe60 [ 26.014128] ? netlink_unicast+0x6b0/0x6b0 [ 26.014142] ? security_socket_sendmsg+0x89/0xb0 [ 26.014151] ? netlink_unicast+0x6b0/0x6b0 [ 26.014162] sock_sendmsg+0xca/0x110 [ 26.014174] ___sys_sendmsg+0x767/0x8b0 [ 26.014191] ? copy_msghdr_from_user+0x590/0x590 [ 26.014211] ? __do_page_fault+0x5f7/0xc90 [ 26.014220] ? lock_downgrade+0x980/0x980 [ 26.014239] ? __fget_light+0x297/0x380 [ 26.014249] ? fget_raw+0x20/0x20 [ 26.014258] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 26.014263] ? vmacache_find+0x5f/0x280 [ 26.014269] ? vmacache_update+0xfe/0x130 [ 26.014285] ? up_read+0x1a/0x40 [ 26.014294] ? __do_page_fault+0x3d6/0xc90 [ 26.014300] ? get_unused_fd_flags+0x190/0x190 [ 26.014318] ? __fdget+0x18/0x20 [ 26.014334] __sys_sendmsg+0xe5/0x210 [ 26.014340] ? __sys_sendmsg+0xe5/0x210 [ 26.014351] ? SyS_shutdown+0x290/0x290 [ 26.014362] ? __do_page_fault+0xc90/0xc90 [ 26.014376] ? fd_install+0x4d/0x60 [ 26.014402] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.014418] SyS_sendmsg+0x2d/0x50 [ 26.014429] entry_SYSCALL_64_fastpath+0x23/0x9a [ 26.014434] RIP: 0033:0x440029 [ 26.014438] RSP: 002b:00007fff85091198 EFLAGS: 00000203 ORIG_RAX: 000000000000002e [ 26.014445] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440029 [ 26.014448] RDX: 0000000000000000 RSI: 0000000020004000 RDI: 0000000000000003 [ 26.014452] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 26.014456] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401990 [ 26.014460] R13: 0000000000401a20 R14: 0000000000000000 R15: 0000000000000000 [ 26.035917] Dumping ftrace buffer: [ 26.035987] (ftrace buffer empty) [ 26.035990] Kernel Offset: disabled [ 26.462000] Rebooting in 86400 seconds..