[....] Starting enhanced syslogd: rsyslogd[ 16.510962] audit: type=1400 audit(1521438838.727:5): avc: denied { syslog } for pid=4074 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: [ 19.279665] audit: type=1400 audit(1521438841.496:6): avc: denied { map } for pid=4214 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 '10.128.0.36' (ECDSA) to the list of known hosts. [ 51.254515] audit: type=1400 audit(1521438873.471:7): avc: denied { map } for pid=4231 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 2018/03/19 05:54:33 parsed 1 programs 2018/03/19 05:54:33 executed programs: 0 [ 51.488422] audit: type=1400 audit(1521438873.705:8): avc: denied { map } for pid=4231 comm="syz-execprog" path="/root/syzkaller-shm890918109" 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 [ 51.498993] IPVS: ftp: loaded support on port[0] = 21 [ 52.382343] kasan: CONFIG_KASAN_INLINE enabled [ 52.386950] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 52.394286] general protection fault: 0000 [#1] SMP KASAN [ 52.399801] Dumping ftrace buffer: [ 52.403308] (ftrace buffer empty) [ 52.406988] Modules linked in: [ 52.410155] CPU: 0 PID: 4469 Comm: syz-executor0 Not tainted 4.16.0-rc5+ #268 [ 52.417394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.427520] RIP: 0010:__lock_acquire+0xa09/0x3e00 [ 52.432333] RSP: 0018:ffff8801b2ae7320 EFLAGS: 00010002 [ 52.437661] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 52.444898] RDX: 0000000000000046 RSI: 0000000000000000 RDI: ffffffff86ec9ce0 [ 52.452136] RBP: ffff8801b2ae76b0 R08: ffffffff841ce509 R09: 0000000000000001 [ 52.459373] R10: 0000000000000000 R11: 0000000000000230 R12: 0000000000000000 [ 52.466608] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801b0ab8000 [ 52.473849] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f7fc5b40 [ 52.482043] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 52.487891] CR2: 000000000813b029 CR3: 00000001b0735005 CR4: 00000000001606f0 [ 52.495130] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.502368] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.509602] Call Trace: [ 52.512164] ? __lock_acquire+0x664/0x3e00 [ 52.516366] ? print_irqtrace_events+0x270/0x270 [ 52.521087] ? __lockdep_init_map+0xe4/0x650 [ 52.525463] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 52.530621] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 52.535780] ? __lock_acquire+0x664/0x3e00 [ 52.539983] ? ucma_destroy_id+0x269/0x4c0 [ 52.544186] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 52.549344] ? __might_sleep+0x95/0x190 [ 52.553285] ? ucma_destroy_id+0x269/0x4c0 [ 52.557485] ? __mutex_lock+0x16f/0x1a80 [ 52.561511] ? ucma_destroy_id+0x269/0x4c0 [ 52.565713] ? trace_hardirqs_off+0x10/0x10 [ 52.570000] ? trace_hardirqs_off+0x10/0x10 [ 52.574291] ? mutex_lock_io_nested+0x1900/0x1900 [ 52.579100] ? futex_wait+0x6a9/0x9a0 [ 52.582870] lock_acquire+0x1d5/0x580 [ 52.586638] ? lock_acquire+0x1d5/0x580 [ 52.591049] ? rdma_destroy_id+0xa9/0xda0 [ 52.595168] ? lock_release+0xa40/0xa40 [ 52.599107] ? lock_downgrade+0x980/0x980 [ 52.603223] ? lock_release+0xa40/0xa40 [ 52.607166] ? check_same_owner+0x320/0x320 [ 52.611457] ? do_raw_spin_trylock+0x190/0x190 [ 52.616009] _raw_spin_lock_irqsave+0x96/0xc0 [ 52.620474] ? rdma_destroy_id+0xa9/0xda0 [ 52.624590] rdma_destroy_id+0xa9/0xda0 [ 52.628533] ? trace_hardirqs_on+0xd/0x10 [ 52.632648] ? _raw_spin_unlock_irq+0x27/0x70 [ 52.637108] ? wait_for_completion+0xe0/0x770 [ 52.641570] ? cma_release_dev+0x350/0x350 [ 52.645772] ? wait_for_completion_interruptible+0x7e0/0x7e0 [ 52.651535] ? do_wait_intr_irq+0x3e0/0x3e0 [ 52.655823] ? do_raw_spin_trylock+0x190/0x190 [ 52.660380] ? _raw_spin_unlock_irqrestore+0x31/0xc0 [ 52.665453] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 52.670436] ? trace_hardirqs_on+0xd/0x10 [ 52.674549] ? complete+0x62/0x80 [ 52.677972] ucma_destroy_id+0x2e9/0x4c0 [ 52.681998] ? ucma_close+0x2f0/0x2f0 [ 52.685767] ? __might_sleep+0x95/0x190 [ 52.689711] ? kasan_check_write+0x14/0x20 [ 52.693916] ? _copy_from_user+0x99/0x110 [ 52.698029] ucma_write+0x2d6/0x3d0 [ 52.701624] ? ucma_close+0x2f0/0x2f0 [ 52.705393] ? ucma_resolve_route+0x1a0/0x1a0 [ 52.709859] ? ucma_resolve_route+0x1a0/0x1a0 [ 52.714338] __vfs_write+0xef/0x970 [ 52.717937] ? rcu_note_context_switch+0x710/0x710 [ 52.722833] ? kernel_read+0x120/0x120 [ 52.726685] ? __might_sleep+0x95/0x190 [ 52.730625] ? _cond_resched+0x14/0x30 [ 52.734482] ? __inode_security_revalidate+0xd9/0x130 [ 52.739639] ? avc_policy_seqno+0x9/0x20 [ 52.743665] ? selinux_file_permission+0x82/0x460 [ 52.748475] ? security_file_permission+0x89/0x1e0 [ 52.753370] ? rw_verify_area+0xe5/0x2b0 [ 52.757396] ? __fdget_raw+0x20/0x20 [ 52.761076] vfs_write+0x189/0x510 [ 52.764587] SyS_write+0xef/0x220 [ 52.768008] ? SyS_read+0x220/0x220 [ 52.771605] ? do_fast_syscall_32+0x156/0xf9f [ 52.776065] ? SyS_read+0x220/0x220 [ 52.779658] do_fast_syscall_32+0x3ec/0xf9f [ 52.783956] ? _raw_spin_unlock_irq+0x27/0x70 [ 52.788419] ? do_int80_syscall_32+0x9c0/0x9c0 [ 52.792967] ? _raw_spin_unlock_irq+0x27/0x70 [ 52.797429] ? finish_task_switch+0x1c1/0x7e0 [ 52.801894] ? syscall_return_slowpath+0x2ac/0x550 [ 52.806791] ? prepare_exit_to_usermode+0x350/0x350 [ 52.811777] ? sysret32_from_system_call+0x5/0x3c [ 52.816587] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.821398] entry_SYSENTER_compat+0x70/0x7f [ 52.825774] RIP: 0023:0xf7feac99 [ 52.829103] RSP: 002b:00000000f7fc509c EFLAGS: 00000286 ORIG_RAX: 0000000000000004 [ 52.836776] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020000340 [ 52.844013] RDX: 0000000000000018 RSI: 0000000000000000 RDI: 0000000000000000 [ 52.851254] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 52.858492] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 52.865729] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 52.872969] 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 [ 52.892013] RIP: __lock_acquire+0xa09/0x3e00 RSP: ffff8801b2ae7320 [ 52.898302] ---[ end trace 50fdd25638ac735c ]--- [ 52.903024] Kernel panic - not syncing: Fatal exception [ 52.908687] Dumping ftrace buffer: [ 52.912197] (ftrace buffer empty) [ 52.915878] Kernel Offset: disabled [ 52.919476] Rebooting in 86400 seconds..