[....] Starting enhanced syslogd: rsyslogd[ 10.619350] audit: type=1400 audit(1515468902.064:5): avc: denied { syslog } for pid=3333 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: [ 15.660401] audit: type=1400 audit(1515468907.105:6): avc: denied { map } for pid=3473 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 '10.128.0.55' (ECDSA) to the list of known hosts. executing program [ 35.475783] audit: type=1400 audit(1515468926.920:7): avc: denied { map } for pid=3491 comm="syzkaller313667" path="/root/syzkaller313667874" 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 [ 35.478715] WARNING: CPU: 0 PID: 3491 at mm/slab_common.c:1012 kmalloc_slab+0x5d/0x70 [ 35.478722] Kernel panic - not syncing: panic_on_warn set ... [ 35.478722] [ 35.478727] CPU: 0 PID: 3491 Comm: syzkaller313667 Not tainted 4.15.0-rc6-next-20180108+ #91 [ 35.478730] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.478732] Call Trace: [ 35.478740] dump_stack+0x194/0x257 [ 35.478749] ? arch_local_irq_restore+0x53/0x53 [ 35.478758] ? vsnprintf+0x1ed/0x1900 [ 35.478769] panic+0x1e4/0x41c [ 35.478774] ? refcount_error_report+0x214/0x214 [ 35.478780] ? show_regs_print_info+0x18/0x18 [ 35.478796] ? __warn+0x1c1/0x200 [ 35.478804] ? kmalloc_slab+0x5d/0x70 [ 35.478808] __warn+0x1dc/0x200 [ 35.478813] ? kmalloc_slab+0x5d/0x70 [ 35.478821] report_bug+0x211/0x2d0 [ 35.478831] fixup_bug.part.11+0x37/0x80 [ 35.478837] do_error_trap+0x2d7/0x3e0 [ 35.478845] ? math_error+0x400/0x400 [ 35.478850] ? rcu_read_lock_held+0xa9/0xc0 [ 35.478856] ? xfrm_state_get_afinfo+0x138/0x280 [ 35.478872] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.478882] do_invalid_op+0x1b/0x20 [ 35.478887] invalid_op+0x22/0x40 [ 35.478892] RIP: 0010:kmalloc_slab+0x5d/0x70 [ 35.478895] RSP: 0018:ffff8801c0117450 EFLAGS: 00010246 [ 35.478899] RAX: 0000000000000000 RBX: ffff8801c05d3b40 RCX: ffffffff84b1fe1c [ 35.478902] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000fffffa60 [ 35.478904] RBP: ffff8801c0117450 R08: 0000000000000000 R09: 1ffff10038022e4d [ 35.478907] R10: ffff8801c01171a0 R11: 0000000000000001 R12: 00000000fffffa60 [ 35.478909] R13: 00000000fffffa60 R14: 00000000014080c0 R15: ffff8801c054c000 [ 35.478922] ? xfrm_add_sa+0x1b6c/0x33e0 [ 35.478933] __kmalloc+0x25/0x760 [ 35.478938] ? xfrm_get_mode.part.29+0x260/0x260 [ 35.478942] ? xfrm_find_algo+0x1c4/0x270 [ 35.478949] ? xfrm_add_sa+0x1b79/0x33e0 [ 35.478959] xfrm_add_sa+0x1b79/0x33e0 [ 35.478975] ? xfrm_send_state_notify+0x1c50/0x1c50 [ 35.478982] ? nla_parse+0x29a/0x3d0 [ 35.478991] ? nla_validate+0x1c0/0x1c0 [ 35.479000] ? __netlink_ns_capable+0xe1/0x120 [ 35.479010] ? xfrm_send_state_notify+0x1c50/0x1c50 [ 35.479016] xfrm_user_rcv_msg+0x422/0x860 [ 35.479020] ? xfrm_user_rcv_msg+0x422/0x860 [ 35.479029] ? xfrm_dump_sa_done+0xe0/0xe0 [ 35.479035] ? lock_downgrade+0x980/0x980 [ 35.479044] ? lock_release+0xa40/0xa40 [ 35.479075] ? netlink_tap_init_net+0x350/0x350 [ 35.479084] netlink_rcv_skb+0x224/0x470 [ 35.479089] ? xfrm_dump_sa_done+0xe0/0xe0 [ 35.479096] ? netlink_ack+0xa10/0xa10 [ 35.479105] ? netlink_skb_destructor+0x1d0/0x1d0 [ 35.479116] xfrm_netlink_rcv+0x6f/0x90 [ 35.479122] netlink_unicast+0x4c4/0x6b0 [ 35.479133] ? netlink_attachskb+0x8a0/0x8a0 [ 35.479144] ? security_netlink_send+0x81/0xb0 [ 35.479153] netlink_sendmsg+0xa4a/0xe60 [ 35.479164] ? netlink_unicast+0x6b0/0x6b0 [ 35.479173] ? security_socket_sendmsg+0x89/0xb0 [ 35.479178] ? netlink_unicast+0x6b0/0x6b0 [ 35.479187] sock_sendmsg+0xca/0x110 [ 35.479195] ___sys_sendmsg+0x767/0x8b0 [ 35.479204] ? copy_msghdr_from_user+0x590/0x590 [ 35.479219] ? __do_page_fault+0x5f7/0xc90 [ 35.479225] ? lock_downgrade+0x980/0x980 [ 35.479238] ? __fget_light+0x297/0x380 [ 35.479244] ? fget_raw+0x20/0x20 [ 35.479250] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 35.479254] ? vmacache_find+0x5f/0x280 [ 35.479258] ? vmacache_update+0xfe/0x130 [ 35.479268] ? up_read+0x1a/0x40 [ 35.479273] ? __do_page_fault+0x3d6/0xc90 [ 35.479277] ? get_unused_fd_flags+0x190/0x190 [ 35.479289] ? __fdget+0x18/0x20 [ 35.479298] __sys_sendmsg+0xe5/0x210 [ 35.479302] ? __sys_sendmsg+0xe5/0x210 [ 35.479309] ? SyS_shutdown+0x290/0x290 [ 35.479315] ? __do_page_fault+0xc90/0xc90 [ 35.479324] ? fd_install+0x4d/0x60 [ 35.479340] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.479350] SyS_sendmsg+0x2d/0x50 [ 35.479357] entry_SYSCALL_64_fastpath+0x23/0x9a [ 35.479360] RIP: 0033:0x440029 [ 35.479362] RSP: 002b:00007ffc8176c558 EFLAGS: 00000203 ORIG_RAX: 000000000000002e [ 35.479367] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440029 [ 35.479369] RDX: 0000000000000000 RSI: 0000000020004000 RDI: 0000000000000003 [ 35.479372] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 35.479374] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401990 [ 35.479376] R13: 0000000000401a20 R14: 0000000000000000 R15: 0000000000000000 [ 35.501665] Dumping ftrace buffer: [ 35.501704] (ftrace buffer empty) [ 35.501706] Kernel Offset: disabled [ 35.927041] Rebooting in 86400 seconds..