[....] Starting enhanced syslogd: rsyslogd[ 11.340691] audit: type=1400 audit(1515468967.631:5): avc: denied { syslog } for pid=3319 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: [ 18.390621] audit: type=1400 audit(1515468974.681:6): avc: denied { map } for pid=3458 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 '10.128.0.33' (ECDSA) to the list of known hosts. executing program [ 24.593760] audit: type=1400 audit(1515468980.884:7): avc: denied { map } for pid=3472 comm="syzkaller813227" path="/root/syzkaller813227416" 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 [ 24.597676] WARNING: CPU: 1 PID: 3472 at mm/slab_common.c:971 kmalloc_slab+0x5d/0x70 [ 24.597687] Kernel panic - not syncing: panic_on_warn set ... [ 24.597687] [ 24.597694] CPU: 1 PID: 3472 Comm: syzkaller813227 Not tainted 4.15.0-rc7+ #253 [ 24.597698] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.597701] Call Trace: [ 24.597711] dump_stack+0x194/0x257 [ 24.597724] ? arch_local_irq_restore+0x53/0x53 [ 24.597740] ? vsnprintf+0x1ed/0x1900 [ 24.597754] panic+0x1e4/0x41c [ 24.597763] ? refcount_error_report+0x214/0x214 [ 24.597771] ? show_regs_print_info+0x18/0x18 [ 24.597789] ? __warn+0x1c1/0x200 [ 24.597802] ? kmalloc_slab+0x5d/0x70 [ 24.597808] __warn+0x1dc/0x200 [ 24.597817] ? kmalloc_slab+0x5d/0x70 [ 24.597828] report_bug+0x211/0x2d0 [ 24.597846] fixup_bug.part.11+0x37/0x80 [ 24.597856] do_error_trap+0x2d7/0x3e0 [ 24.597870] ? math_error+0x400/0x400 [ 24.597876] ? rcu_read_lock_held+0xa9/0xc0 [ 24.597884] ? xfrm_state_get_afinfo+0x138/0x280 [ 24.597908] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.597924] do_invalid_op+0x1b/0x20 [ 24.597932] invalid_op+0x22/0x40 [ 24.597939] RIP: 0010:kmalloc_slab+0x5d/0x70 [ 24.597943] RSP: 0018:ffff8801c04d7450 EFLAGS: 00010246 [ 24.597949] RAX: 0000000000000000 RBX: ffff8801c0b6a000 RCX: ffffffff84ac180c [ 24.597953] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000fffffa60 [ 24.597957] RBP: ffff8801c04d7450 R08: 0000000000000000 R09: 1ffff1003809ae4d [ 24.597961] R10: ffff8801c04d71a0 R11: 0000000000000001 R12: 00000000fffffa60 [ 24.597965] R13: 00000000fffffa60 R14: 00000000014080c0 R15: ffff8801c0b6a480 [ 24.597985] ? xfrm_add_sa+0x1b6c/0x33e0 [ 24.598006] __kmalloc+0x25/0x760 [ 24.598013] ? xfrm_get_mode.part.29+0x260/0x260 [ 24.598019] ? xfrm_find_algo+0x1c4/0x270 [ 24.598031] ? xfrm_add_sa+0x1b79/0x33e0 [ 24.598047] xfrm_add_sa+0x1b79/0x33e0 [ 24.598072] ? xfrm_send_state_notify+0x1c50/0x1c50 [ 24.598081] ? nla_parse+0x29a/0x3d0 [ 24.598095] ? nla_validate+0x1c0/0x1c0 [ 24.598108] ? __netlink_ns_capable+0xe1/0x120 [ 24.598119] ? xfrm_send_state_notify+0x1c50/0x1c50 [ 24.598128] xfrm_user_rcv_msg+0x422/0x860 [ 24.598135] ? xfrm_user_rcv_msg+0x422/0x860 [ 24.598149] ? xfrm_dump_sa_done+0xe0/0xe0 [ 24.598163] ? netlink_deliver_tap+0x148/0xcf0 [ 24.598174] ? lock_downgrade+0x980/0x980 [ 24.598218] ? netlink_deliver_tap+0x171/0xcf0 [ 24.598237] netlink_rcv_skb+0x224/0x470 [ 24.598245] ? xfrm_dump_sa_done+0xe0/0xe0 [ 24.598256] ? netlink_ack+0xa10/0xa10 [ 24.598270] ? netlink_skb_destructor+0x1d0/0x1d0 [ 24.598289] xfrm_netlink_rcv+0x6f/0x90 [ 24.598298] netlink_unicast+0x4ee/0x700 [ 24.598315] ? netlink_attachskb+0x8a0/0x8a0 [ 24.598331] ? security_netlink_send+0x81/0xb0 [ 24.598344] netlink_sendmsg+0xa4a/0xe60 [ 24.598362] ? netlink_unicast+0x700/0x700 [ 24.598377] ? security_socket_sendmsg+0x89/0xb0 [ 24.598385] ? netlink_unicast+0x700/0x700 [ 24.598397] sock_sendmsg+0xca/0x110 [ 24.598408] ___sys_sendmsg+0x767/0x8b0 [ 24.598424] ? copy_msghdr_from_user+0x590/0x590 [ 24.598446] ? __do_page_fault+0x5f7/0xc90 [ 24.598455] ? lock_downgrade+0x980/0x980 [ 24.598475] ? __fget_light+0x297/0x380 [ 24.598485] ? fget_raw+0x20/0x20 [ 24.598496] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 24.598502] ? vmacache_find+0x5f/0x280 [ 24.598509] ? vmacache_update+0xfe/0x130 [ 24.598525] ? up_read+0x1a/0x40 [ 24.598534] ? __do_page_fault+0x3d6/0xc90 [ 24.598540] ? get_unused_fd_flags+0x190/0x190 [ 24.598558] ? __fdget+0x18/0x20 [ 24.598574] __sys_sendmsg+0xe5/0x210 [ 24.598579] ? __sys_sendmsg+0xe5/0x210 [ 24.598590] ? SyS_shutdown+0x290/0x290 [ 24.598602] ? __do_page_fault+0xc90/0xc90 [ 24.598616] ? fd_install+0x4d/0x60 [ 24.598645] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.598662] SyS_sendmsg+0x2d/0x50 [ 24.598673] entry_SYSCALL_64_fastpath+0x23/0x9a [ 24.598678] RIP: 0033:0x440029 [ 24.598682] RSP: 002b:00007ffd619aef08 EFLAGS: 00000203 ORIG_RAX: 000000000000002e [ 24.598689] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440029 [ 24.598693] RDX: 0000000000000000 RSI: 0000000020004000 RDI: 0000000000000003 [ 24.598697] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 24.598700] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401990 [ 24.598704] R13: 0000000000401a20 R14: 0000000000000000 R15: 0000000000000000 [ 24.619646] Dumping ftrace buffer: [ 24.619720] (ftrace buffer empty) [ 24.619723] Kernel Offset: disabled [ 25.043896] Rebooting in 86400 seconds..