[....] Starting enhanced syslogd: rsyslogd[ 12.841818] audit: type=1400 audit(1515595872.833:5): avc: denied { syslog } for pid=3341 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: [ 18.497434] audit: type=1400 audit(1515595878.489:6): avc: denied { map } for pid=3480 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 [ 32.110497] audit: type=1400 audit(1515595892.102:7): avc: denied { map } for pid=3496 comm="syzkaller980406" path="/root/syzkaller980406046" 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 [ 32.114538] tc_ctl_action: received NO action attribs [ 32.114672] WARNING: CPU: 1 PID: 3496 at net/netlink/af_netlink.c:2365 netlink_ack+0x625/0xa10 [ 32.114675] Kernel panic - not syncing: panic_on_warn set ... [ 32.114675] [ 32.114680] CPU: 1 PID: 3496 Comm: syzkaller980406 Not tainted 4.15.0-rc7+ #166 [ 32.114682] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.114684] Call Trace: [ 32.114692] dump_stack+0x194/0x257 [ 32.114700] ? arch_local_irq_restore+0x53/0x53 [ 32.114710] ? vsnprintf+0x1ed/0x1900 [ 32.114720] panic+0x1e4/0x41c [ 32.114725] ? refcount_error_report+0x214/0x214 [ 32.114731] ? show_regs_print_info+0x18/0x18 [ 32.114742] ? __warn+0x1c1/0x200 [ 32.114750] ? netlink_ack+0x625/0xa10 [ 32.114754] __warn+0x1dc/0x200 [ 32.114758] ? netlink_ack+0x625/0xa10 [ 32.114765] report_bug+0x211/0x2d0 [ 32.114778] fixup_bug.part.11+0x37/0x80 [ 32.114784] do_error_trap+0x2d7/0x3e0 [ 32.114793] ? math_error+0x400/0x400 [ 32.114800] ? __alloc_skb+0x57e/0x780 [ 32.114808] ? skb_copy_and_csum_dev+0x370/0x370 [ 32.114818] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.114828] do_invalid_op+0x1b/0x20 [ 32.114834] invalid_op+0x22/0x40 [ 32.114838] RIP: 0010:netlink_ack+0x625/0xa10 [ 32.114841] RSP: 0018:ffff8801c011f5f0 EFLAGS: 00010293 [ 32.114846] RAX: ffff8801c0ba8500 RBX: ffff8801c07c8200 RCX: ffffffff8455ad75 [ 32.114849] RDX: 0000000000000000 RSI: ffff8801bfd44b70 RDI: ffff8801c07c82d8 [ 32.114852] RBP: ffff8801c011f6a8 R08: ffffed0039099405 R09: ffffed0039099405 [ 32.114855] R10: 0000000000000003 R11: ffffed0039099404 R12: ffff8801bfd44b40 [ 32.114859] R13: ffff8801c84ca000 R14: ffff8801c0bcae00 R15: 1ffff10038023ec4 [ 32.114870] ? netlink_ack+0x625/0xa10 [ 32.114885] ? netlink_sendmsg+0xe60/0xe60 [ 32.114891] ? netlink_deliver_tap+0x171/0xcf0 [ 32.114903] netlink_rcv_skb+0x375/0x470 [ 32.114910] ? validate_linkmsg+0x8e0/0x8e0 [ 32.114916] ? netlink_ack+0xa10/0xa10 [ 32.114924] ? netlink_skb_destructor+0x1d0/0x1d0 [ 32.114937] rtnetlink_rcv+0x1c/0x20 [ 32.114942] netlink_unicast+0x4ee/0x700 [ 32.114952] ? netlink_attachskb+0x8a0/0x8a0 [ 32.114966] netlink_sendmsg+0xa4a/0xe60 [ 32.114977] ? netlink_unicast+0x700/0x700 [ 32.114987] ? security_socket_sendmsg+0x89/0xb0 [ 32.114992] ? netlink_unicast+0x700/0x700 [ 32.114999] sock_sendmsg+0xca/0x110 [ 32.115009] ___sys_sendmsg+0x767/0x8b0 [ 32.115016] ? do_raw_spin_trylock+0x190/0x190 [ 32.115025] ? copy_msghdr_from_user+0x590/0x590 [ 32.115034] ? _raw_spin_unlock+0x22/0x30 [ 32.115046] ? check_noncircular+0x20/0x20 [ 32.115052] ? __pmd_alloc+0x4e0/0x4e0 [ 32.115057] ? lock_release+0xa40/0xa40 [ 32.115064] ? __fget_light+0x297/0x380 [ 32.115070] ? fget_raw+0x20/0x20 [ 32.115082] ? handle_mm_fault+0x248/0x8d0 [ 32.115090] ? find_held_lock+0x35/0x1d0 [ 32.115108] __sys_sendmsg+0xe5/0x210 [ 32.115112] ? __sys_sendmsg+0xe5/0x210 [ 32.115119] ? SyS_shutdown+0x290/0x290 [ 32.115122] ? handle_mm_fault+0x410/0x8d0 [ 32.115128] ? __do_page_fault+0x32d/0xc90 [ 32.115134] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 32.115139] ? vmacache_find+0x5f/0x280 [ 32.115166] compat_SyS_sendmsg+0x2a/0x40 [ 32.115172] ? compat_SyS_getsockopt+0x420/0x420 [ 32.115177] do_fast_syscall_32+0x3ee/0xf9d [ 32.115187] ? do_int80_syscall_32+0x9d0/0x9d0 [ 32.115194] ? kasan_check_read+0x11/0x20 [ 32.115201] ? syscall_return_slowpath+0x550/0x550 [ 32.115209] ? SyS_rt_sigaction+0x94/0x1b0 [ 32.115215] ? SyS_sigprocmask+0x4b0/0x4b0 [ 32.115219] ? SyS_read+0x184/0x220 [ 32.115224] ? retint_user+0x18/0x18 [ 32.115234] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.115245] entry_SYSENTER_compat+0x54/0x63 [ 32.115248] RIP: 0023:0xf7fa2c79 [ 32.115250] RSP: 002b:00000000ff92016c EFLAGS: 00000286 ORIG_RAX: 0000000000000172 [ 32.115256] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000201dcfc8 [ 32.115259] RDX: 0000000000008800 RSI: 00000000080eb00c RDI: 000000000000003f [ 32.115262] RBP: 0000000000001000 R08: 0000000000000000 R09: 0000000000000000 [ 32.115265] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 32.115268] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 32.136399] Dumping ftrace buffer: [ 32.136482] (ftrace buffer empty) [ 32.136484] Kernel Offset: disabled [ 32.542527] Rebooting in 86400 seconds..