[....] Starting enhanced syslogd: rsyslogd[ 12.365446] audit: type=1400 audit(1514748222.589:5): avc: denied { syslog } for pid=3340 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: [ 19.344351] audit: type=1400 audit(1514748229.568:6): avc: denied { map } for pid=3481 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 '10.128.0.58' (ECDSA) to the list of known hosts. executing program [ 25.544850] audit: type=1400 audit(1514748235.768:7): avc: denied { map } for pid=3495 comm="syzkaller875949" path="/root/syzkaller875949668" 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 [ 25.547573] netlink: 11 bytes leftover after parsing attributes in process `syzkaller875949'. [ 25.547640] kasan: CONFIG_KASAN_INLINE enabled [ 25.547647] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.547652] general protection fault: 0000 [#1] SMP KASAN [ 25.547657] Dumping ftrace buffer: [ 25.547660] (ftrace buffer empty) [ 25.547661] Modules linked in: [ 25.547667] CPU: 1 PID: 3495 Comm: syzkaller875949 Not tainted 4.15.0-rc5+ #154 [ 25.547670] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.547681] RIP: 0010:nf_tables_dump_obj_done+0x3d/0x70 [ 25.547683] RSP: 0018:ffff8801bf80f108 EFLAGS: 00010246 [ 25.547686] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845f488d [ 25.547688] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8801c13c1a30 [ 25.547690] RBP: ffff8801bf80f110 R08: 0000000000000000 R09: 1ffff10037f01dda [ 25.547693] R10: ffff8801bf80ee98 R11: 0000000000000002 R12: 1ffff10037f01e2a [ 25.547695] R13: ffffffff845f4880 R14: ffff8801c13c1a01 R15: ffff8801c13c1a80 [ 25.547698] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008817840 [ 25.547701] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 25.547703] CR2: 0000000020a35000 CR3: 00000001c05cf003 CR4: 00000000001606e0 [ 25.547708] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.547711] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.547712] Call Trace: [ 25.547718] netlink_dump+0x97a/0xcf0 [ 25.547724] ? netlink_broadcast+0x50/0x50 [ 25.547738] __netlink_dump_start+0x4f0/0x6d0 [ 25.547747] nf_tables_getobj+0x401/0xa00 [ 25.547753] ? nfnetlink_rcv_msg+0x8c8/0xd70 [ 25.547759] ? nf_tables_dump_obj+0xee0/0xee0 [ 25.547765] ? nla_parse+0x29a/0x3d0 [ 25.547772] ? nft_obj_notify+0x100/0x100 [ 25.547775] ? list_add_tail_rcu+0x1d0/0x1d0 [ 25.547782] ? nf_tables_dump_obj+0xee0/0xee0 [ 25.547788] nfnetlink_rcv_msg+0xbf0/0xd70 [ 25.547793] ? nfnetlink_rcv_msg+0x30a/0xd70 [ 25.547805] ? nfnetlink_bind+0x310/0x310 [ 25.547811] ? __bfs+0x6c3/0x750 [ 25.547821] netlink_rcv_skb+0x224/0x470 [ 25.547826] ? nfnetlink_bind+0x310/0x310 [ 25.547830] ? netlink_ack+0xa10/0xa10 [ 25.547835] ? ns_capable_common+0xcf/0x160 [ 25.547841] ? __netlink_ns_capable+0xe1/0x120 [ 25.547848] nfnetlink_rcv+0x200/0x1920 [ 25.547851] ? lock_downgrade+0x980/0x980 [ 25.547857] ? lock_release+0xa40/0xa40 [ 25.547860] ? netlink_lookup+0x620/0xa90 [ 25.547869] ? nfnl_err_reset+0x2b0/0x2b0 [ 25.547875] ? netlink_deliver_tap+0x171/0xcf0 [ 25.547880] ? iov_iter_advance+0x2a1/0x13f0 [ 25.547886] ? netlink_getname+0x3c0/0x3c0 [ 25.547894] ? iov_iter_copy_from_user_atomic+0xe30/0xe30 [ 25.547898] ? netlink_skb_destructor+0x1d0/0x1d0 [ 25.547904] ? selinux_nlmsg_lookup+0x32b/0x430 [ 25.547911] netlink_unicast+0x4ee/0x700 [ 25.547918] ? netlink_attachskb+0x8a0/0x8a0 [ 25.547925] ? security_netlink_send+0x81/0xb0 [ 25.547930] netlink_sendmsg+0xa4a/0xe60 [ 25.547937] ? netlink_unicast+0x700/0x700 [ 25.547943] ? security_socket_sendmsg+0x89/0xb0 [ 25.547947] ? netlink_unicast+0x700/0x700 [ 25.547955] sock_sendmsg+0xca/0x110 [ 25.547960] sock_write_iter+0x31a/0x5d0 [ 25.547965] ? sock_sendmsg+0x110/0x110 [ 25.547974] ? iov_iter_init+0xaf/0x1d0 [ 25.547981] __vfs_write+0x684/0x970 [ 25.547987] ? kernel_read+0x120/0x120 [ 25.547991] ? bpf_fd_pass+0x280/0x280 [ 25.547999] ? _cond_resched+0x14/0x30 [ 25.548008] ? selinux_file_permission+0x82/0x460 [ 25.548017] ? rw_verify_area+0xe5/0x2b0 [ 25.548022] ? __fdget_raw+0x20/0x20 [ 25.548027] vfs_write+0x189/0x510 [ 25.548033] SyS_write+0xef/0x220 [ 25.548040] ? __do_page_fault+0x3d6/0xc90 [ 25.548046] ? SyS_read+0x220/0x220 [ 25.548052] ? do_fast_syscall_32+0x156/0xf9d [ 25.548058] ? SyS_read+0x220/0x220 [ 25.548062] do_fast_syscall_32+0x3ee/0xf9d [ 25.548070] ? do_int80_syscall_32+0x9d0/0x9d0 [ 25.548075] ? kasan_check_read+0x11/0x20 [ 25.548080] ? syscall_return_slowpath+0x550/0x550 [ 25.548087] ? SyS_rt_sigaction+0x94/0x1b0 [ 25.548091] ? SyS_sigprocmask+0x4b0/0x4b0 [ 25.548094] ? SyS_read+0x184/0x220 [ 25.548100] ? retint_user+0x18/0x18 [ 25.548107] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.548115] entry_SYSENTER_compat+0x54/0x63 [ 25.548118] RIP: 0023:0xf7f20c79 [ 25.548120] RSP: 002b:00000000ffb5e63c EFLAGS: 00000203 ORIG_RAX: 0000000000000004 [ 25.548123] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020a35000 [ 25.548125] RDX: 000000000000009c RSI: 0000000000000167 RDI: 0000000000000010 [ 25.548127] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000 [ 25.548129] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 25.548131] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 25.548140] Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 30 48 8b 5b 28 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 75 1c 48 8b 3b e8 45 89 47 fd 48 89 df e8 3d 89 47 [ 25.548215] RIP: nf_tables_dump_obj_done+0x3d/0x70 RSP: ffff8801bf80f108 [ 25.548241] ---[ end trace ac14776cbeb0c756 ]--- [ 25.548244] Kernel panic - not syncing: Fatal exception [ 25.570761] Dumping ftrace buffer: [ 25.570764] (ftrace buffer empty) [ 25.570766] Kernel Offset: disabled [ 26.069226] Rebooting in 86400 seconds..