[....] Starting enhanced syslogd: rsyslogd[ 15.665448] audit: type=1400 audit(1521562164.746:5): avc: denied { syslog } for pid=3919 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.029250] audit: type=1400 audit(1521562168.110:6): avc: denied { map } for pid=4058 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 '10.128.0.28' (ECDSA) to the list of known hosts. [ 25.357698] audit: type=1400 audit(1521562174.438:7): avc: denied { map } for pid=4072 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/03/20 16:09:34 parsed 1 programs 2018/03/20 16:09:34 executed programs: 0 [ 25.613732] audit: type=1400 audit(1521562174.694:8): avc: denied { map } for pid=4072 comm="syz-execprog" path="/root/syzkaller-shm064463124" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 25.627810] IPVS: ftp: loaded support on port[0] = 21 2018/03/20 16:09:39 executed programs: 299 [ 30.915341] kasan: CONFIG_KASAN_INLINE enabled [ 30.919945] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.927282] general protection fault: 0000 [#1] SMP KASAN [ 30.932793] Dumping ftrace buffer: [ 30.936310] (ftrace buffer empty) [ 30.940005] Modules linked in: [ 30.943187] CPU: 1 PID: 5671 Comm: syz-executor0 Not tainted 4.16.0-rc6+ #270 [ 30.950443] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.959801] RIP: 0010:__lock_acquire+0xa09/0x3e00 [ 30.964721] RSP: 0018:ffff8801c3d372e0 EFLAGS: 00010002 [ 30.970068] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 30.977318] RDX: 0000000000000046 RSI: 0000000000000000 RDI: ffffffff86ec9ce0 [ 30.984557] RBP: ffff8801c3d37670 R08: ffffffff841b7aee R09: 0000000000000001 [ 30.991800] R10: 0000000000000000 R11: 0000000000000230 R12: 0000000000000000 [ 30.999041] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801c3bfc700 [ 31.006281] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f7ee4b40 [ 31.014474] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 31.020322] CR2: 000000000813b029 CR3: 00000001c4a88004 CR4: 00000000001606e0 [ 31.027563] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.034802] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.042040] Call Trace: [ 31.044603] ? print_irqtrace_events+0x270/0x270 [ 31.049333] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 31.054504] ? lock_acquire+0x1d5/0x580 [ 31.058472] ? lock_acquire+0x1d5/0x580 [ 31.062421] ? ucma_get_ctx+0x1f/0xf0 [ 31.066205] ? lock_release+0xa40/0xa40 [ 31.070163] ? check_same_owner+0x320/0x320 [ 31.074476] ? rcu_note_context_switch+0x710/0x710 [ 31.079389] ? __might_sleep+0x95/0x190 [ 31.083342] ? ucma_get_ctx+0x1f/0xf0 [ 31.087120] ? __mutex_lock+0x16f/0x1a80 [ 31.091154] ? ucma_get_ctx+0x1f/0xf0 [ 31.094928] ? trace_hardirqs_off+0x10/0x10 [ 31.099220] ? trace_hardirqs_off+0x10/0x10 [ 31.103511] ? mutex_lock_io_nested+0x1900/0x1900 [ 31.108321] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 31.113478] lock_acquire+0x1d5/0x580 [ 31.117247] ? lock_acquire+0x1d5/0x580 [ 31.121190] ? cma_comp_exch+0x2e/0xb0 [ 31.125044] ? lock_downgrade+0x980/0x980 [ 31.129159] ? lock_release+0xa40/0xa40 [ 31.133106] ? perf_event_sync_stat+0x5b0/0x5b0 [ 31.137739] ? __enqueue_entity+0x109/0x1e0 [ 31.142035] ? __radix_tree_lookup+0x435/0x5e0 [ 31.146586] _raw_spin_lock_irqsave+0x96/0xc0 [ 31.151064] ? cma_comp_exch+0x2e/0xb0 [ 31.154918] cma_comp_exch+0x2e/0xb0 [ 31.158599] rdma_bind_addr+0xe3/0x1b50 [ 31.162543] ? lock_release+0xa40/0xa40 [ 31.166484] ? check_same_owner+0x320/0x320 [ 31.170773] ? cma_ndev_work_handler+0x1a0/0x1a0 [ 31.175502] ucma_bind+0x1b1/0x260 [ 31.179011] ? ucma_resolve_ip+0x1f0/0x1f0 [ 31.183217] ? kasan_check_write+0x14/0x20 [ 31.187420] ucma_write+0x2d6/0x3d0 [ 31.191018] ? ucma_resolve_ip+0x1f0/0x1f0 [ 31.195225] ? ucma_resolve_route+0x1a0/0x1a0 [ 31.199690] ? ucma_resolve_route+0x1a0/0x1a0 [ 31.204155] __vfs_write+0xef/0x970 [ 31.207751] ? rcu_note_context_switch+0x710/0x710 [ 31.212655] ? kernel_read+0x120/0x120 [ 31.216511] ? __might_sleep+0x95/0x190 [ 31.220454] ? _cond_resched+0x14/0x30 [ 31.224487] ? __inode_security_revalidate+0xd9/0x130 [ 31.229646] ? avc_policy_seqno+0x9/0x20 [ 31.233678] ? selinux_file_permission+0x82/0x460 [ 31.238492] ? security_file_permission+0x89/0x1e0 [ 31.243388] ? rw_verify_area+0xe5/0x2b0 [ 31.247414] ? __fdget_raw+0x20/0x20 [ 31.251094] vfs_write+0x189/0x510 [ 31.254599] SyS_write+0xef/0x220 [ 31.258023] ? exit_to_usermode_loop+0x198/0x2f0 [ 31.262746] ? SyS_read+0x220/0x220 [ 31.266338] ? do_fast_syscall_32+0x156/0xf9f [ 31.270801] ? SyS_read+0x220/0x220 [ 31.274397] do_fast_syscall_32+0x3ec/0xf9f [ 31.278686] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.283149] ? do_int80_syscall_32+0x9c0/0x9c0 [ 31.287697] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.292159] ? finish_task_switch+0x1c1/0x7e0 [ 31.296625] ? syscall_return_slowpath+0x2ac/0x550 [ 31.301527] ? prepare_exit_to_usermode+0x350/0x350 [ 31.306517] ? sysret32_from_system_call+0x5/0x3c [ 31.311327] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.316138] entry_SYSENTER_compat+0x70/0x7f [ 31.320512] RIP: 0023:0xf7f09c99 [ 31.323844] RSP: 002b:00000000f7ee409c EFLAGS: 00000286 ORIG_RAX: 0000000000000004 [ 31.331526] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000020000940 [ 31.338771] RDX: 0000000000000090 RSI: 0000000000000000 RDI: 0000000000000000 [ 31.346023] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 31.353259] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 31.360498] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 31.367736] Code: 81 c4 60 03 00 00 44 89 d0 5b 41 5a 41 5c 41 5d 41 5e 41 5f 5d 49 8d 62 f8 c3 4c 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 0a 33 00 00 49 81 3b e0 ed 9f 87 41 bd 00 00 [ 31.386783] RIP: __lock_acquire+0xa09/0x3e00 RSP: ffff8801c3d372e0 [ 31.393078] ---[ end trace cc98ef051f015887 ]--- [ 31.397798] Kernel panic - not syncing: Fatal exception [ 31.403528] Dumping ftrace buffer: [ 31.407035] (ftrace buffer empty) [ 31.410713] Kernel Offset: disabled [ 31.414305] Rebooting in 86400 seconds..