[....] Starting enhanced syslogd: rsyslogd[ 16.664263] audit: type=1400 audit(1520373038.558:5): avc: denied { syslog } for pid=4026 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 23.145260] audit: type=1400 audit(1520373045.038:6): avc: denied { map } for pid=4165 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 '10.128.0.10' (ECDSA) to the list of known hosts. [ 29.436734] audit: type=1400 audit(1520373051.330:7): avc: denied { map } for pid=4179 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 2018/03/06 21:50:51 parsed 1 programs 2018/03/06 21:50:51 executed programs: 0 [ 29.690525] audit: type=1400 audit(1520373051.583:8): avc: denied { map } for pid=4179 comm="syz-execprog" path="/root/syzkaller-shm823227817" 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 [ 29.702225] IPVS: ftp: loaded support on port[0] = 21 [ 29.966972] kasan: CONFIG_KASAN_INLINE enabled [ 29.971559] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.978889] general protection fault: 0000 [#1] SMP KASAN [ 29.984407] Dumping ftrace buffer: [ 29.987914] (ftrace buffer empty) [ 29.991594] Modules linked in: [ 29.994757] CPU: 0 PID: 4245 Comm: syz-executor0 Not tainted 4.16.0-rc4+ #253 [ 30.001997] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.011331] RIP: 0010:__lock_acquire+0xa09/0x3e00 [ 30.016139] RSP: 0018:ffff8801bd05f320 EFLAGS: 00010002 [ 30.021467] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 30.028704] RDX: 0000000000000046 RSI: 0000000000000000 RDI: ffffffff86ec9920 [ 30.035941] RBP: ffff8801bd05f6b0 R08: ffffffff841cb939 R09: 0000000000000001 [ 30.043184] R10: 0000000000000000 R11: 0000000000000230 R12: 0000000000000000 [ 30.050423] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801bd27e140 [ 30.057662] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f7f1eb40 [ 30.065854] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 30.071703] CR2: 000000000813b029 CR3: 00000001bdf69004 CR4: 00000000001606f0 [ 30.078942] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.086182] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.093419] Call Trace: [ 30.095981] ? __lock_acquire+0x664/0x3e00 [ 30.100184] ? print_irqtrace_events+0x270/0x270 [ 30.104907] ? __lockdep_init_map+0xe4/0x650 [ 30.109284] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 30.114443] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 30.119603] ? __lock_acquire+0x664/0x3e00 [ 30.123808] ? ucma_destroy_id+0x269/0x4c0 [ 30.128021] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 30.133189] ? __might_sleep+0x95/0x190 [ 30.137133] ? ucma_destroy_id+0x269/0x4c0 [ 30.141336] ? __mutex_lock+0x16f/0x1a80 [ 30.145365] ? ucma_destroy_id+0x269/0x4c0 [ 30.149569] ? trace_hardirqs_off+0x10/0x10 [ 30.153859] ? trace_hardirqs_off+0x10/0x10 [ 30.158149] ? mutex_lock_io_nested+0x1900/0x1900 [ 30.162961] ? futex_wait+0x6a9/0x9a0 [ 30.166737] ? __lock_acquire+0x664/0x3e00 [ 30.170945] lock_acquire+0x1d5/0x580 [ 30.174716] ? lock_acquire+0x1d5/0x580 [ 30.178666] ? rdma_destroy_id+0xa9/0xda0 [ 30.182783] ? lock_release+0xa40/0xa40 [ 30.186724] ? lock_downgrade+0x980/0x980 [ 30.190850] ? lock_release+0xa40/0xa40 [ 30.194790] ? check_same_owner+0x320/0x320 [ 30.199078] ? do_raw_spin_trylock+0x190/0x190 [ 30.203628] _raw_spin_lock_irqsave+0x96/0xc0 [ 30.208093] ? rdma_destroy_id+0xa9/0xda0 [ 30.212209] rdma_destroy_id+0xa9/0xda0 [ 30.216151] ? trace_hardirqs_on+0xd/0x10 [ 30.220265] ? _raw_spin_unlock_irq+0x27/0x70 [ 30.224727] ? wait_for_completion+0xe0/0x770 [ 30.229191] ? cma_release_dev+0x350/0x350 [ 30.233394] ? wait_for_completion_interruptible+0x7e0/0x7e0 [ 30.239159] ? do_wait_intr_irq+0x3e0/0x3e0 [ 30.243449] ? do_raw_spin_trylock+0x190/0x190 [ 30.248009] ? _raw_spin_unlock_irqrestore+0x31/0xc0 [ 30.253087] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.258070] ? trace_hardirqs_on+0xd/0x10 [ 30.262184] ? complete+0x62/0x80 [ 30.265606] ucma_destroy_id+0x2e9/0x4c0 [ 30.269636] ? ucma_close+0x2f0/0x2f0 [ 30.273406] ? __might_sleep+0x95/0x190 [ 30.277352] ? kasan_check_write+0x14/0x20 [ 30.281554] ? _copy_from_user+0x99/0x110 [ 30.285673] ucma_write+0x2d6/0x3d0 [ 30.289275] ? ucma_close+0x2f0/0x2f0 [ 30.293046] ? ucma_resolve_route+0x1a0/0x1a0 [ 30.297510] ? ucma_resolve_route+0x1a0/0x1a0 [ 30.301975] __vfs_write+0xef/0x970 [ 30.305572] ? rcu_note_context_switch+0x710/0x710 [ 30.310466] ? kernel_read+0x120/0x120 [ 30.314323] ? __might_sleep+0x95/0x190 [ 30.318267] ? _cond_resched+0x14/0x30 [ 30.322123] ? __inode_security_revalidate+0xd9/0x130 [ 30.327279] ? avc_policy_seqno+0x9/0x20 [ 30.331309] ? selinux_file_permission+0x82/0x460 [ 30.336120] ? security_file_permission+0x89/0x1e0 [ 30.341022] ? rw_verify_area+0xe5/0x2b0 [ 30.345062] ? __fdget_raw+0x20/0x20 [ 30.348744] vfs_write+0x189/0x510 [ 30.352254] SyS_write+0xef/0x220 [ 30.355675] ? filp_open+0x70/0x70 [ 30.359183] ? SyS_read+0x220/0x220 [ 30.362779] ? do_fast_syscall_32+0x156/0xf9f [ 30.367243] ? SyS_read+0x220/0x220 [ 30.370839] do_fast_syscall_32+0x3ec/0xf9f [ 30.375129] ? _raw_spin_unlock_irq+0x27/0x70 [ 30.379592] ? do_int80_syscall_32+0x9c0/0x9c0 [ 30.384146] ? _raw_spin_unlock_irq+0x27/0x70 [ 30.388608] ? finish_task_switch+0x1c1/0x7e0 [ 30.393074] ? syscall_return_slowpath+0x2ac/0x550 [ 30.397982] ? prepare_exit_to_usermode+0x350/0x350 [ 30.402966] ? sysret32_from_system_call+0x5/0x3c [ 30.407777] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.412589] entry_SYSENTER_compat+0x70/0x7f [ 30.416972] RIP: 0023:0xf7f43c99 [ 30.420305] RSP: 002b:00000000f7f1e09c EFLAGS: 00000286 ORIG_RAX: 0000000000000004 [ 30.427988] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000020000000 [ 30.435228] RDX: 00000000000000a4 RSI: 0000000000000000 RDI: 0000000000000000 [ 30.442465] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 30.449710] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 30.456948] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 30.464187] 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 60 ed 9f 87 41 bd 00 00 [ 30.483263] RIP: __lock_acquire+0xa09/0x3e00 RSP: ffff8801bd05f320 [ 30.489551] ---[ end trace e7f01e2870596b68 ]--- [ 30.494272] Kernel panic - not syncing: Fatal exception [ 30.500045] Dumping ftrace buffer: [ 30.503552] (ftrace buffer empty) [ 30.507230] Kernel Offset: disabled [ 30.510824] Rebooting in 86400 seconds..