[....] Starting enhanced syslogd: rsyslogd[ 13.552817] audit: type=1400 audit(1516871510.405:5): avc: denied { syslog } for pid=3503 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: [ 18.352802] audit: type=1400 audit(1516871515.205:6): avc: denied { map } for pid=3641 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 '10.128.0.30' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 24.669281] audit: type=1400 audit(1516871521.522:7): avc: denied { map } for pid=3655 comm="syzkaller023844" path="/root/syzkaller023844797" 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 RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 24.927211] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument executing program [ 25.252465] WARNING: CPU: 1 PID: 3655 at mm/slab_common.c:971 kmalloc_slab+0x5d/0x70 [ 25.260356] Kernel panic - not syncing: panic_on_warn set ... [ 25.260356] [ 25.267692] CPU: 1 PID: 3655 Comm: syzkaller023844 Not tainted 4.15.0-rc9+ #189 [ 25.275209] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.284535] Call Trace: [ 25.287138] dump_stack+0x194/0x257 [ 25.290744] ? arch_local_irq_restore+0x53/0x53 [ 25.295391] ? vsnprintf+0x1ed/0x1900 [ 25.299184] panic+0x1e4/0x41c [ 25.302356] ? refcount_error_report+0x214/0x214 [ 25.307092] ? show_regs_print_info+0x18/0x18 [ 25.311581] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.316574] ? __warn+0x1c1/0x200 [ 25.320007] ? kmalloc_slab+0x5d/0x70 [ 25.323777] __warn+0x1dc/0x200 [ 25.327031] ? kmalloc_slab+0x5d/0x70 [ 25.330808] report_bug+0x211/0x2d0 [ 25.334426] fixup_bug.part.11+0x37/0x80 [ 25.338465] do_error_trap+0x2d7/0x3e0 [ 25.342327] ? netlink_sendmsg+0xa4a/0xe60 [ 25.346535] ? sock_sendmsg+0xca/0x110 [ 25.350394] ? ___sys_sendmsg+0x767/0x8b0 [ 25.354516] ? math_error+0x400/0x400 [ 25.358350] ? check_noncircular+0x20/0x20 [ 25.362575] ? print_irqtrace_events+0x270/0x270 [ 25.367312] ? __lock_is_held+0xb6/0x140 [ 25.371353] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.376172] do_invalid_op+0x1b/0x20 [ 25.379859] invalid_op+0x22/0x40 [ 25.383284] RIP: 0010:kmalloc_slab+0x5d/0x70 [ 25.387661] RSP: 0018:ffff8801d95ce7a0 EFLAGS: 00010246 [ 25.392994] RAX: 0000000000000000 RBX: 00000007fffffff8 RCX: ffffffff83b2f03f [ 25.400233] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000007fffffff8 [ 25.407475] RBP: ffff8801d95ce7a0 R08: 1ffff1003b2b9c67 R09: 0000000000000000 [ 25.414717] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 25.421966] R13: 0000000000000000 R14: 00000000014080c0 R15: ffff8801d4bdf340 [ 25.429218] ? tun_device_event+0x3bf/0xcb0 [ 25.433534] __kmalloc+0x25/0x760 [ 25.436975] ? tun_device_event+0x3d3/0xcb0 [ 25.441269] tun_device_event+0x3d3/0xcb0 [ 25.445390] ? sel_netif_destroy+0x250/0x250 [ 25.449778] ? lockdep_rtnl_is_held+0x1a/0x30 [ 25.454250] notifier_call_chain+0x136/0x2c0 [ 25.458637] ? raw_notifier_chain_unregister+0x1b0/0x1b0 [ 25.464067] ? print_irqtrace_events+0x270/0x270 [ 25.468818] ? rtnl_is_locked+0x54/0xb0 [ 25.472764] ? rtnl_kfree_skbs+0x70/0x70 [ 25.476799] raw_notifier_call_chain+0x2d/0x40 [ 25.481360] call_netdevice_notifiers_info+0x32/0x60 [ 25.486441] call_netdevice_notifiers+0xac/0x100 [ 25.491168] ? call_netdevice_notifiers_info+0x60/0x60 [ 25.496427] do_setlink+0xc10/0x3b30 [ 25.500117] ? bpf_prog_kallsyms_find+0xbd/0x440 [ 25.504852] ? rtnl_fdb_del+0xb20/0xb20 [ 25.508801] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.513961] ? print_irqtrace_events+0x270/0x270 [ 25.518696] ? print_irqtrace_events+0x270/0x270 [ 25.523421] ? __free_insn_slot+0x5c0/0x5c0 [ 25.527716] ? print_irqtrace_events+0x270/0x270 [ 25.532447] ? print_irqtrace_events+0x270/0x270 [ 25.537192] ? lock_pin_lock+0x360/0x360 [ 25.541239] ? print_irqtrace_events+0x270/0x270 [ 25.545977] ? __lock_acquire+0x664/0x3e00 [ 25.550184] ? print_irqtrace_events+0x270/0x270 [ 25.554916] ? print_irqtrace_events+0x270/0x270 [ 25.559645] ? print_irqtrace_events+0x270/0x270 [ 25.564378] ? __lock_acquire+0x664/0x3e00 [ 25.568601] ? rtnl_is_locked+0x54/0xb0 [ 25.572554] ? validate_linkmsg+0x5f0/0x8e0 [ 25.576851] ? rtnl_calcit.isra.25+0x4f0/0x4f0 [ 25.581411] ? netdev_master_upper_dev_get+0x157/0x200 [ 25.586660] ? __dev_get_by_flags+0x180/0x180 [ 25.591138] rtnl_newlink+0xf5a/0x1ab0 [ 25.594998] ? __mutex_lock+0x16f/0x1a80 [ 25.599047] ? rtnl_link_unregister+0x330/0x330 [ 25.603694] ? avc_has_extended_perms+0x12c0/0x12c0 [ 25.608694] ? check_noncircular+0x20/0x20 [ 25.612953] ? __lock_is_held+0xb6/0x140 [ 25.616996] ? rtnl_link_unregister+0x330/0x330 [ 25.621641] rtnetlink_rcv_msg+0x733/0x1020 [ 25.625943] ? validate_linkmsg+0x8e0/0x8e0 [ 25.630243] ? check_noncircular+0x20/0x20 [ 25.634453] ? find_held_lock+0x35/0x1d0 [ 25.638494] ? netlink_lookup+0x5f7/0xa90 [ 25.642621] ? lock_downgrade+0x980/0x980 [ 25.646743] ? find_held_lock+0x35/0x1d0 [ 25.650782] ? rtnl_link_unregister+0x330/0x330 [ 25.655430] ? netlink_deliver_tap+0x148/0xcf0 [ 25.659984] ? lock_downgrade+0x980/0x980 [ 25.664113] ? lock_release+0xa40/0xa40 [ 25.668059] ? netlink_lookup+0x620/0xa90 [ 25.672183] ? rtnl_link_unregister+0x330/0x330 [ 25.676832] ? netlink_deliver_tap+0x171/0xcf0 [ 25.681394] netlink_rcv_skb+0x14b/0x380 [ 25.685427] ? validate_linkmsg+0x8e0/0x8e0 [ 25.689722] ? netlink_ack+0xa10/0xa10 [ 25.693584] ? netlink_skb_destructor+0x1d0/0x1d0 [ 25.698414] rtnetlink_rcv+0x1c/0x20 [ 25.702099] netlink_unicast+0x4ee/0x700 [ 25.706136] ? netlink_attachskb+0x8a0/0x8a0 [ 25.710529] ? security_netlink_send+0x81/0xb0 [ 25.715085] netlink_sendmsg+0xa4a/0xe60 [ 25.719140] ? netlink_unicast+0x700/0x700 [ 25.723362] ? security_socket_sendmsg+0x89/0xb0 [ 25.728092] ? netlink_unicast+0x700/0x700 [ 25.732306] sock_sendmsg+0xca/0x110 [ 25.736004] ___sys_sendmsg+0x767/0x8b0 [ 25.739954] ? SyS_membarrier+0x600/0x600 [ 25.744088] ? copy_msghdr_from_user+0x590/0x590 [ 25.748813] ? check_noncircular+0x20/0x20 [ 25.753047] ? check_noncircular+0x20/0x20 [ 25.757252] ? __pmd_alloc+0x4e0/0x4e0 [ 25.761115] ? __fget_light+0x297/0x380 [ 25.765062] ? fget_raw+0x20/0x20 [ 25.768497] ? handle_mm_fault+0x248/0x8d0 [ 25.772709] ? find_held_lock+0x35/0x1d0 [ 25.776755] __sys_sendmsg+0xe5/0x210 [ 25.780528] ? __sys_sendmsg+0xe5/0x210 [ 25.784475] ? SyS_shutdown+0x290/0x290 [ 25.788425] ? handle_mm_fault+0x410/0x8d0 [ 25.792632] ? __do_page_fault+0x32d/0xc90 [ 25.796837] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 25.801400] ? vmacache_find+0x5f/0x280 [ 25.805369] compat_SyS_sendmsg+0x2a/0x40 [ 25.809490] ? compat_SyS_getsockopt+0x420/0x420 [ 25.814218] do_fast_syscall_32+0x3ee/0xf9d [ 25.818520] ? do_int80_syscall_32+0x9d0/0x9d0 [ 25.823074] ? kasan_check_read+0x11/0x20 [ 25.827195] ? syscall_return_slowpath+0x550/0x550 [ 25.832100] ? SyS_rt_sigaction+0x94/0x1b0 [ 25.836306] ? SyS_sigprocmask+0x4b0/0x4b0 [ 25.840512] ? SyS_read+0x184/0x220 [ 25.844112] ? retint_user+0x18/0x18 [ 25.847801] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.852620] entry_SYSENTER_compat+0x54/0x63 [ 25.857008] RIP: 0023:0xf7f2fc79 [ 25.860343] RSP: 002b:00000000fff4589c EFLAGS: 00000207 ORIG_RAX: 0000000000000172 [ 25.868022] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020504000 [ 25.875263] RDX: 0000000000000000 RSI: 0000000000000167 RDI: 0000000000000010 [ 25.882521] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000 [ 25.889771] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 25.897012] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 25.905024] Dumping ftrace buffer: [ 25.908625] (ftrace buffer empty) [ 25.912309] Kernel Offset: disabled [ 25.915910] Rebooting in 86400 seconds..