[?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. [ 12.592320] audit: type=1400 audit(1514695601.110:6): avc: denied { map } for pid=3178 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 18.805648] audit: type=1400 audit(1514695607.323:7): avc: denied { map } for pid=3192 comm="syzkaller439144" path="/root/syzkaller439144728" 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 [ 18.816284] device syz0 entered promiscuous mode [ 18.834692] ------------[ cut here ]------------ [ 18.834710] syz0: caps=(0x00000800000058c1, 0x0000000000000000) len=28 data_len=0 gso_size=8 gso_type=3 ip_summed=0 [ 18.834853] WARNING: CPU: 1 PID: 3192 at net/core/dev.c:2600 skb_warn_bad_offload+0x2bd/0x3c0 [ 18.834858] Kernel panic - not syncing: panic_on_warn set ... [ 18.834858] [ 18.834866] CPU: 1 PID: 3192 Comm: syzkaller439144 Not tainted 4.15.0-rc5+ #153 [ 18.834869] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.834873] Call Trace: [ 18.834885] dump_stack+0x194/0x257 [ 18.834898] ? arch_local_irq_restore+0x53/0x53 [ 18.834913] ? vsnprintf+0x1ed/0x1900 [ 18.834929] panic+0x1e4/0x41c [ 18.834938] ? refcount_error_report+0x214/0x214 [ 18.834946] ? show_regs_print_info+0x18/0x18 [ 18.834964] ? __warn+0x1c1/0x200 [ 18.834977] ? skb_warn_bad_offload+0x2bd/0x3c0 [ 18.834984] __warn+0x1dc/0x200 [ 18.834992] ? skb_warn_bad_offload+0x2bd/0x3c0 [ 18.835007] report_bug+0x211/0x2d0 [ 18.835027] fixup_bug.part.11+0x37/0x80 [ 18.835037] do_error_trap+0x2d7/0x3e0 [ 18.835052] ? math_error+0x400/0x400 [ 18.835058] ? vprintk_emit+0x3ea/0x590 [ 18.835085] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 18.835102] do_invalid_op+0x1b/0x20 [ 18.835109] invalid_op+0x22/0x40 [ 18.835116] RIP: 0010:skb_warn_bad_offload+0x2bd/0x3c0 [ 18.835121] RSP: 0018:ffff8801c7cdef00 EFLAGS: 00010282 [ 18.835127] RAX: dffffc0000000008 RBX: ffff8801c7dc82c0 RCX: ffffffff8159b75e [ 18.835131] RDX: 0000000000000000 RSI: 1ffff100398eb9b8 RDI: 0000000000000293 [ 18.835136] RBP: ffff8801c7cdef58 R08: 1ffff10038f9bd73 R09: 0000000000000000 [ 18.835140] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 18.835144] R13: ffff8801c7dc82c0 R14: ffff8801c7fe96a0 R15: 0000000000000003 [ 18.835163] ? vprintk_func+0x5e/0xc0 [ 18.835194] __skb_gso_segment+0x612/0x800 [ 18.835207] ? skb_mac_gso_segment+0x660/0x660 [ 18.835223] ? sch_direct_xmit+0xc0/0x6d0 [ 18.835237] validate_xmit_skb+0x4ba/0xb20 [ 18.835252] ? netif_skb_features+0x8e0/0x8e0 [ 18.835264] ? do_raw_spin_trylock+0x190/0x190 [ 18.835274] ? lock_acquire+0x1d5/0x580 [ 18.835288] validate_xmit_skb_list+0xb7/0x120 [ 18.835306] sch_direct_xmit+0x3b6/0x6d0 [ 18.835321] ? dev_deactivate_queue.constprop.30+0x260/0x260 [ 18.835346] __dev_queue_xmit+0x196d/0x2370 [ 18.835368] ? netdev_pick_tx+0x300/0x300 [ 18.835377] ? __might_fault+0x110/0x1d0 [ 18.835386] ? lock_downgrade+0x980/0x980 [ 18.835399] ? lock_release+0xa40/0xa40 [ 18.835409] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 18.835418] ? refcount_add+0x24/0x60 [ 18.835429] ? skb_set_owner_w+0x232/0x330 [ 18.835446] ? __might_sleep+0x95/0x190 [ 18.835458] ? kasan_check_write+0x14/0x20 [ 18.835466] ? copyin+0x91/0xb0 [ 18.835479] ? _copy_from_iter+0x367/0xf30 [ 18.835490] ? __check_object_size+0x25d/0x4f0 [ 18.835505] ? check_stack_object+0x140/0x140 [ 18.835519] ? copy_page_to_iter+0xe10/0xe10 [ 18.835530] ? _copy_from_iter_full+0x22b/0xbb0 [ 18.835549] ? skb_copy_datagram_from_iter+0x3a5/0x5a0 [ 18.835557] ? iov_iter_advance+0x13f0/0x13f0 [ 18.835577] dev_queue_xmit+0x17/0x20 [ 18.835590] packet_sendmsg+0x3ad5/0x60a0 [ 18.835603] ? find_held_lock+0x35/0x1d0 [ 18.835626] ? avc_has_perm+0x35e/0x680 [ 18.835650] ? do_raw_spin_lock+0x48/0x220 [ 18.835666] ? packet_cached_dev_get+0x2b0/0x2b0 [ 18.835685] ? avc_has_perm+0x43e/0x680 [ 18.835700] ? avc_has_perm_noaudit+0x520/0x520 [ 18.835709] ? __thp_get_unmapped_area+0x130/0x130 [ 18.835716] ? __lock_acquire+0x664/0x3e00 [ 18.835724] ? __lock_acquire+0x664/0x3e00 [ 18.835737] ? locks_remove_posix+0x518/0x820 [ 18.835755] ? find_held_lock+0x35/0x1d0 [ 18.835774] ? avc_has_perm+0x35e/0x680 [ 18.835788] ? sock_has_perm+0x2a4/0x420 [ 18.835800] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 18.835838] ? selinux_socket_sendmsg+0x36/0x40 [ 18.835848] ? security_socket_sendmsg+0x89/0xb0 [ 18.835857] ? packet_cached_dev_get+0x2b0/0x2b0 [ 18.835868] sock_sendmsg+0xca/0x110 [ 18.835880] sock_write_iter+0x31a/0x5d0 [ 18.835892] ? sock_sendmsg+0x110/0x110 [ 18.835916] ? iov_iter_init+0xaf/0x1d0 [ 18.835930] __vfs_write+0x684/0x970 [ 18.835944] ? kernel_read+0x120/0x120 [ 18.835950] ? bpf_fd_pass+0x280/0x280 [ 18.835965] ? _cond_resched+0x14/0x30 [ 18.835979] ? selinux_file_permission+0x82/0x460 [ 18.836002] ? rw_verify_area+0xe5/0x2b0 [ 18.836009] ? __fdget_raw+0x20/0x20 [ 18.836022] vfs_write+0x189/0x510 [ 18.836037] SyS_write+0xef/0x220 [ 18.836044] ? __do_page_fault+0x3d6/0xc90 [ 18.836055] ? SyS_read+0x220/0x220 [ 18.836066] ? do_fast_syscall_32+0x156/0xf9d [ 18.836079] ? SyS_read+0x220/0x220 [ 18.836089] do_fast_syscall_32+0x3ee/0xf9d [ 18.836107] ? do_int80_syscall_32+0x9d0/0x9d0 [ 18.836115] ? kasan_check_read+0x11/0x20 [ 18.836126] ? syscall_return_slowpath+0x550/0x550 [ 18.836137] ? SyS_rt_sigaction+0x94/0x1b0 [ 18.836147] ? SyS_sigprocmask+0x4b0/0x4b0 [ 18.836152] ? SyS_read+0x184/0x220 [ 18.836160] ? retint_user+0x18/0x18 [ 18.836175] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 18.836194] entry_SYSENTER_compat+0x54/0x63 [ 18.836199] RIP: 0023:0xf7fabc79 [ 18.836202] RSP: 002b:00000000ff86466c EFLAGS: 00000293 ORIG_RAX: 0000000000000004 [ 18.836209] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020384000 [ 18.836213] RDX: 0000000000000026 RSI: 00000000080ef00c RDI: 000000000000003f [ 18.836217] RBP: 0000000000001000 R08: 0000000000000000 R09: 0000000000000000 [ 18.836220] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 18.836224] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 18.837542] Dumping ftrace buffer: [ 18.837574] (ftrace buffer empty) [ 18.837576] Kernel Offset: disabled [ 19.381091] Rebooting in 86400 seconds..