[?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. [ 17.462041] audit: type=1400 audit(1519323871.266:6): avc: denied { map } for pid=4129 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 '10.128.15.199' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 23.724787] audit: type=1400 audit(1519323877.529:7): avc: denied { map } for pid=4143 comm="syzkaller165096" path="/root/syzkaller165096144" 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 [ 23.750932] kasan: CONFIG_KASAN_INLINE enabled [ 23.755577] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.762949] general protection fault: 0000 [#1] SMP KASAN [ 23.768468] Dumping ftrace buffer: [ 23.771975] (ftrace buffer empty) [ 23.775656] Modules linked in: [ 23.778819] CPU: 0 PID: 4143 Comm: syzkaller165096 Not tainted 4.16.0-rc2+ #237 [ 23.786233] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.795563] RIP: 0010:rds_sendmsg+0x10fd/0x2550 [ 23.800199] RSP: 0018:ffff8801b5f7f690 EFLAGS: 00010202 [ 23.805531] RAX: 0000000000000004 RBX: ffff8801b5f7f978 RCX: ffffffff8530dbed [ 23.812770] RDX: 000000003f1c97ab RSI: dffffc0000000000 RDI: 0000000000000020 [ 23.820025] RBP: ffff8801b5f7f9a0 R08: 0000000000000000 R09: 1ffff10036befe3a [ 23.827281] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801b5f7fb10 [ 23.834522] R13: ffff8801b5f7fd30 R14: ffff8801b1ca0000 R15: 0000000000000000 [ 23.841762] FS: 0000000001769880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 23.849957] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.855808] CR2: 000055c7207450f0 CR3: 00000001b599a005 CR4: 00000000001606f0 [ 23.863050] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.870291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.877529] Call Trace: [ 23.880098] ? rds_send_drop_to+0x1930/0x1930 [ 23.884573] ? lock_downgrade+0x980/0x980 [ 23.888693] ? find_held_lock+0x35/0x1d0 [ 23.892725] ? sock_has_perm+0x2a4/0x420 [ 23.896756] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 23.902088] ? lock_downgrade+0x980/0x980 [ 23.906205] ? dup_iter+0x212/0x260 [ 23.909803] ? lock_release+0xa40/0xa40 [ 23.913753] ? selinux_socket_sendmsg+0x36/0x40 [ 23.918393] ? security_socket_sendmsg+0x89/0xb0 [ 23.923128] ? rds_send_drop_to+0x1930/0x1930 [ 23.927597] sock_sendmsg+0xca/0x110 [ 23.931289] ___sys_sendmsg+0x767/0x8b0 [ 23.935243] ? copy_msghdr_from_user+0x590/0x590 [ 23.939973] ? release_sock+0x1d4/0x2a0 [ 23.943918] ? lock_downgrade+0x980/0x980 [ 23.948045] ? lock_downgrade+0x980/0x980 [ 23.952163] ? lock_release+0xa40/0xa40 [ 23.956109] ? lock_acquire+0x1d5/0x580 [ 23.960051] ? lock_sock_nested+0xa3/0x110 [ 23.964257] ? lock_acquire+0x1d5/0x580 [ 23.968201] ? __local_bh_enable_ip+0x121/0x230 [ 23.972840] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.977825] ? __fget_light+0x2b2/0x3c0 [ 23.981783] ? _raw_spin_unlock_bh+0x30/0x40 [ 23.986163] ? release_sock+0x1d4/0x2a0 [ 23.990106] ? __release_sock+0x360/0x360 [ 23.994223] ? lock_sock_nested+0x91/0x110 [ 23.998430] ? trace_hardirqs_on+0xd/0x10 [ 24.002547] ? __local_bh_enable_ip+0x121/0x230 [ 24.007194] __sys_sendmsg+0xe5/0x210 [ 24.010965] ? __sys_sendmsg+0xe5/0x210 [ 24.014911] ? SyS_shutdown+0x290/0x290 [ 24.018863] ? exit_to_usermode_loop+0x8c/0x2f0 [ 24.023507] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 24.029020] ? __sys_sendmsg+0x210/0x210 [ 24.033057] SyS_sendmsg+0x2d/0x50 [ 24.036567] do_syscall_64+0x280/0x940 [ 24.040423] ? __do_page_fault+0xc90/0xc90 [ 24.044627] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.049353] ? syscall_return_slowpath+0x550/0x550 [ 24.054253] ? syscall_return_slowpath+0x2ac/0x550 [ 24.059158] ? prepare_exit_to_usermode+0x350/0x350 [ 24.064149] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 24.069483] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.074300] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 24.079458] RIP: 0033:0x43fe49 [ 24.082620] RSP: 002b:00007ffd031511f8 EFLAGS: 00000217 ORIG_RAX: 000000000000002e [ 24.090295] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fe49 [ 24.097536] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 [ 24.104774] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 24.112031] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401770 [ 24.119273] R13: 0000000000401800 R14: 0000000000000000 R15: 0000000000000000 [ 24.126524] Code: e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 41 14 00 00 49 8d 7f 20 48 be 00 00 00 00 00 fc ff df 41 8b 54 24 10 48 89 f8 48 c1 e8 03 <0f> b6 04 30 84 c0 74 08 3c 03 0f 8e 6b 11 00 00 41 89 57 20 e8 [ 24.145599] RIP: rds_sendmsg+0x10fd/0x2550 RSP: ffff8801b5f7f690 [ 24.151912] ---[ end trace a6cffb297815c791 ]--- [ 24.156667] Kernel panic - not syncing: Fatal exception [ 24.162495] Dumping ftrace buffer: [ 24.166016] (ftrace buffer empty) [ 24.169702] Kernel Offset: disabled [ 24.173298] Rebooting in 86400 seconds..