[?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. [ 17.675490] audit: type=1400 audit(1520826169.216:6): avc: denied { map } for pid=4162 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 '10.128.0.2' (ECDSA) to the list of known hosts. syzkaller login: [ 23.997396] audit: type=1400 audit(1520826175.538:7): avc: denied { map } for pid=4176 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 2018/03/12 03:42:55 parsed 1 programs 2018/03/12 03:42:55 executed programs: 0 [ 24.246054] audit: type=1400 audit(1520826175.786:8): avc: denied { map } for pid=4176 comm="syz-execprog" path="/root/syzkaller-shm135720315" 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 [ 24.261949] IPVS: ftp: loaded support on port[0] = 21 [ 24.513899] kasan: CONFIG_KASAN_INLINE enabled [ 24.518488] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.525818] general protection fault: 0000 [#1] SMP KASAN [ 24.531331] Dumping ftrace buffer: [ 24.534838] (ftrace buffer empty) [ 24.538524] Modules linked in: [ 24.541687] CPU: 0 PID: 4228 Comm: syz-executor0 Not tainted 4.16.0-rc4+ #260 [ 24.548925] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.558264] RIP: 0010:perf_trace_lock_acquire+0xc0/0x980 [ 24.563681] RSP: 0018:ffff8801bbd8f4f0 EFLAGS: 00010002 [ 24.569015] RAX: 0000000000000049 RBX: 1ffff100377b1ea8 RCX: 0000000000000000 [ 24.576259] RDX: dffffc0000000000 RSI: 0000000000000230 RDI: ffffffff86f2c1e0 [ 24.583498] RBP: ffff8801bbd8f6c8 R08: 0000000000000000 R09: 0000000000000230 [ 24.590737] R10: dffffc0000000000 R11: ffffffff815613c0 R12: ffff8801bbd8f6a0 [ 24.597974] R13: 0000000000000000 R14: ffffffff86f2c1e0 R15: 0000000000000001 [ 24.605216] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f7f2cb40 [ 24.613413] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 24.619263] CR2: 000000000813b029 CR3: 00000001b02b1005 CR4: 00000000001606f0 [ 24.626509] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.633751] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.640991] Call Trace: [ 24.643557] ? perf_trace_lock+0x900/0x900 [ 24.647765] ? __might_sleep+0x95/0x190 [ 24.651711] ? perf_trace_lock+0x900/0x900 [ 24.655916] ? ucma_destroy_id+0x269/0x4c0 [ 24.660123] ? trace_hardirqs_off+0x10/0x10 [ 24.664415] ? trace_hardirqs_off+0x10/0x10 [ 24.668705] ? perf_trace_lock_acquire+0xe3/0x980 [ 24.673520] lock_acquire+0x394/0x580 [ 24.677297] ? rdma_destroy_id+0xa9/0xda0 [ 24.681417] ? lock_release+0xa40/0xa40 [ 24.685362] ? lock_downgrade+0x980/0x980 [ 24.689478] ? lock_release+0xa40/0xa40 [ 24.693423] ? check_same_owner+0x320/0x320 [ 24.697715] ? do_raw_spin_trylock+0x190/0x190 [ 24.702269] _raw_spin_lock_irqsave+0x96/0xc0 [ 24.706738] ? rdma_destroy_id+0xa9/0xda0 [ 24.710855] rdma_destroy_id+0xa9/0xda0 [ 24.714800] ? trace_hardirqs_on+0xd/0x10 [ 24.718918] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.723383] ? wait_for_completion+0xe0/0x770 [ 24.727847] ? cma_release_dev+0x350/0x350 [ 24.732054] ? wait_for_completion_interruptible+0x7e0/0x7e0 [ 24.737819] ? do_wait_intr_irq+0x3e0/0x3e0 [ 24.742120] ? do_raw_spin_trylock+0x190/0x190 [ 24.746674] ? _raw_spin_unlock_irqrestore+0x31/0xc0 [ 24.751746] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.756733] ? trace_hardirqs_on+0xd/0x10 [ 24.760848] ? complete+0x62/0x80 [ 24.764275] ucma_destroy_id+0x2e9/0x4c0 [ 24.768310] ? ucma_close+0x2f0/0x2f0 [ 24.772083] ? __might_sleep+0x95/0x190 [ 24.776034] ? kasan_check_write+0x14/0x20 [ 24.780239] ? _copy_from_user+0x99/0x110 [ 24.784362] ucma_write+0x2d6/0x3d0 [ 24.787963] ? ucma_close+0x2f0/0x2f0 [ 24.791733] ? ucma_resolve_route+0x1a0/0x1a0 [ 24.796206] ? ucma_resolve_route+0x1a0/0x1a0 [ 24.800671] __vfs_write+0xef/0x970 [ 24.804270] ? rcu_note_context_switch+0x710/0x710 [ 24.809173] ? kernel_read+0x120/0x120 [ 24.813034] ? __might_sleep+0x95/0x190 [ 24.816980] ? _cond_resched+0x14/0x30 [ 24.820839] ? __inode_security_revalidate+0xd9/0x130 [ 24.825999] ? avc_policy_seqno+0x9/0x20 [ 24.830034] ? selinux_file_permission+0x82/0x460 [ 24.834847] ? security_file_permission+0x89/0x1e0 [ 24.839746] ? rw_verify_area+0xe5/0x2b0 [ 24.843775] ? __fdget_raw+0x20/0x20 [ 24.847457] vfs_write+0x189/0x510 [ 24.850966] SyS_write+0xef/0x220 [ 24.854388] ? exit_to_usermode_loop+0x198/0x2f0 [ 24.859114] ? SyS_read+0x220/0x220 [ 24.862710] ? do_fast_syscall_32+0x156/0xf9f [ 24.867177] ? SyS_read+0x220/0x220 [ 24.870771] do_fast_syscall_32+0x3ec/0xf9f [ 24.875061] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.879526] ? do_int80_syscall_32+0x9c0/0x9c0 [ 24.884079] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.888546] ? finish_task_switch+0x1c1/0x7e0 [ 24.893016] ? syscall_return_slowpath+0x2ac/0x550 [ 24.897921] ? prepare_exit_to_usermode+0x350/0x350 [ 24.902907] ? sysret32_from_system_call+0x5/0x3c [ 24.907720] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.912531] entry_SYSENTER_compat+0x70/0x7f [ 24.916910] RIP: 0023:0xf7f51c99 [ 24.920329] RSP: 002b:00000000f7f2c09c EFLAGS: 00000286 ORIG_RAX: 0000000000000004 [ 24.928015] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000200003c0 [ 24.935257] RDX: 0000000000000314 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.942498] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 24.949736] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 24.956976] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 24.964218] Code: c7 40 1c 00 f2 f2 f2 c7 40 20 f2 f2 f2 f2 c7 40 24 00 f2 f2 f2 c7 40 28 f3 f3 f3 f3 48 8d 46 18 48 89 85 70 fe ff ff 48 c1 e8 03 <80> 3c 10 00 0f 85 da 04 00 00 49 8b 79 18 48 85 ff 0f 84 62 04 [ 24.983268] RIP: perf_trace_lock_acquire+0xc0/0x980 RSP: ffff8801bbd8f4f0 [ 24.990164] ---[ end trace 4438e5921e42f337 ]--- [ 24.994886] Kernel panic - not syncing: Fatal exception [ 25.000637] Dumping ftrace buffer: [ 25.004146] (ftrace buffer empty) [ 25.007823] Kernel Offset: disabled [ 25.011420] Rebooting in 86400 seconds..