[....] Starting enhanced syslogd: rsyslogd[ 17.505430] audit: type=1400 audit(1521187656.971:5): avc: denied { syslog } for pid=4089 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: [ 24.011698] audit: type=1400 audit(1521187663.477:6): avc: denied { map } for pid=4228 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 '10.128.0.19' (ECDSA) to the list of known hosts. [ 30.385052] audit: type=1400 audit(1521187669.850:7): avc: denied { map } for pid=4242 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 2018/03/16 08:07:50 parsed 1 programs 2018/03/16 08:07:50 executed programs: 0 [ 30.628367] audit: type=1400 audit(1521187670.094:8): avc: denied { map } for pid=4242 comm="syz-execprog" path="/root/syzkaller-shm327398723" 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 [ 30.643783] IPVS: ftp: loaded support on port[0] = 21 [ 30.743217] kasan: CONFIG_KASAN_INLINE enabled [ 30.747805] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.755134] general protection fault: 0000 [#1] SMP KASAN [ 30.760639] Dumping ftrace buffer: [ 30.764144] (ftrace buffer empty) [ 30.767820] Modules linked in: [ 30.770985] CPU: 1 PID: 4269 Comm: syz-executor0 Not tainted 4.16.0-rc5+ #265 [ 30.778222] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.787550] RIP: 0010:__lock_acquire+0xa09/0x3e00 [ 30.792358] RSP: 0018:ffff8801a8d87320 EFLAGS: 00010002 [ 30.797691] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 30.804928] RDX: 0000000000000046 RSI: 0000000000000000 RDI: ffffffff86ec9be0 [ 30.812170] RBP: ffff8801a8d876b0 R08: ffffffff841cd829 R09: 0000000000000001 [ 30.819413] R10: 0000000000000000 R11: 0000000000000230 R12: 0000000000000000 [ 30.826650] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801b16ec340 [ 30.833889] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f7f0db40 [ 30.842084] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 30.847933] CR2: 000000000813b029 CR3: 00000001b0755001 CR4: 00000000001606e0 [ 30.855172] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.862409] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.869645] Call Trace: [ 30.872213] ? __lock_acquire+0x664/0x3e00 [ 30.876418] ? print_irqtrace_events+0x270/0x270 [ 30.881141] ? __lockdep_init_map+0xe4/0x650 [ 30.885519] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 30.890678] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 30.895840] ? __lock_acquire+0x664/0x3e00 [ 30.900049] ? ucma_destroy_id+0x269/0x4c0 [ 30.904256] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 30.909416] ? __might_sleep+0x95/0x190 [ 30.913359] ? ucma_destroy_id+0x269/0x4c0 [ 30.917562] ? __mutex_lock+0x16f/0x1a80 [ 30.921591] ? ucma_destroy_id+0x269/0x4c0 [ 30.925793] ? trace_hardirqs_off+0x10/0x10 [ 30.930082] ? trace_hardirqs_off+0x10/0x10 [ 30.934372] ? mutex_lock_io_nested+0x1900/0x1900 [ 30.939182] ? futex_wait+0x6a9/0x9a0 [ 30.942953] lock_acquire+0x1d5/0x580 [ 30.946719] ? lock_acquire+0x1d5/0x580 [ 30.950660] ? rdma_destroy_id+0xa9/0xda0 [ 30.954775] ? lock_release+0xa40/0xa40 [ 30.958718] ? lock_downgrade+0x980/0x980 [ 30.962832] ? lock_release+0xa40/0xa40 [ 30.966777] ? check_same_owner+0x320/0x320 [ 30.971065] ? do_raw_spin_trylock+0x190/0x190 [ 30.975616] _raw_spin_lock_irqsave+0x96/0xc0 [ 30.980077] ? rdma_destroy_id+0xa9/0xda0 [ 30.984194] rdma_destroy_id+0xa9/0xda0 [ 30.988137] ? trace_hardirqs_on+0xd/0x10 [ 30.992251] ? _raw_spin_unlock_irq+0x27/0x70 [ 30.996716] ? wait_for_completion+0xe0/0x770 [ 31.001178] ? cma_release_dev+0x350/0x350 [ 31.005388] ? wait_for_completion_interruptible+0x7e0/0x7e0 [ 31.011158] ? do_wait_intr_irq+0x3e0/0x3e0 [ 31.015448] ? do_raw_spin_trylock+0x190/0x190 [ 31.019996] ? _raw_spin_unlock_irqrestore+0x31/0xc0 [ 31.026115] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.031102] ? trace_hardirqs_on+0xd/0x10 [ 31.035216] ? complete+0x62/0x80 [ 31.038640] ucma_destroy_id+0x2e9/0x4c0 [ 31.042671] ? ucma_close+0x2f0/0x2f0 [ 31.046440] ? __might_sleep+0x95/0x190 [ 31.050386] ? kasan_check_write+0x14/0x20 [ 31.054591] ? _copy_from_user+0x99/0x110 [ 31.058707] ucma_write+0x2d6/0x3d0 [ 31.062300] ? ucma_close+0x2f0/0x2f0 [ 31.066074] ? ucma_resolve_route+0x1a0/0x1a0 [ 31.070539] ? ucma_resolve_route+0x1a0/0x1a0 [ 31.075002] __vfs_write+0xef/0x970 [ 31.078617] ? rcu_note_context_switch+0x710/0x710 [ 31.083513] ? kernel_read+0x120/0x120 [ 31.087372] ? __might_sleep+0x95/0x190 [ 31.091319] ? _cond_resched+0x14/0x30 [ 31.095181] ? __inode_security_revalidate+0xd9/0x130 [ 31.100337] ? avc_policy_seqno+0x9/0x20 [ 31.104369] ? selinux_file_permission+0x82/0x460 [ 31.109182] ? security_file_permission+0x89/0x1e0 [ 31.114081] ? rw_verify_area+0xe5/0x2b0 [ 31.118111] ? __fdget_raw+0x20/0x20 [ 31.121799] vfs_write+0x189/0x510 [ 31.125314] SyS_write+0xef/0x220 [ 31.128740] ? exit_to_usermode_loop+0x198/0x2f0 [ 31.133467] ? SyS_read+0x220/0x220 [ 31.137063] ? do_fast_syscall_32+0x156/0xf9f [ 31.141527] ? SyS_read+0x220/0x220 [ 31.145124] do_fast_syscall_32+0x3ec/0xf9f [ 31.149413] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.153879] ? do_int80_syscall_32+0x9c0/0x9c0 [ 31.158431] ? _raw_spin_unlock_irq+0x27/0x70 [ 31.162894] ? finish_task_switch+0x1c1/0x7e0 [ 31.167358] ? syscall_return_slowpath+0x2ac/0x550 [ 31.172255] ? prepare_exit_to_usermode+0x350/0x350 [ 31.177239] ? sysret32_from_system_call+0x5/0x3c [ 31.182052] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.186862] entry_SYSENTER_compat+0x70/0x7f [ 31.191241] RIP: 0023:0xf7f32c99 [ 31.194579] RSP: 002b:00000000f7f0d09c EFLAGS: 00000286 ORIG_RAX: 0000000000000004 [ 31.202256] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000020000100 [ 31.209500] RDX: 0000000000000018 RSI: 0000000000000000 RDI: 0000000000000000 [ 31.216737] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 31.223977] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 31.231213] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 31.238457] 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 a0 ed 9f 87 41 bd 00 00 [ 31.257515] RIP: __lock_acquire+0xa09/0x3e00 RSP: ffff8801a8d87320 [ 31.263803] ---[ end trace a3c2747f4f92da71 ]--- [ 31.268525] Kernel panic - not syncing: Fatal exception [ 31.274324] Dumping ftrace buffer: [ 31.277839] (ftrace buffer empty) [ 31.281514] Kernel Offset: disabled [ 31.285106] Rebooting in 86400 seconds..