[?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. [ 18.457233] audit: type=1400 audit(1521438991.168:6): avc: denied { map } for pid=4221 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 '10.128.10.7' (ECDSA) to the list of known hosts. executing program executing program executing program executing program syzkaller login: [ 30.957594] audit: type=1400 audit(1521439003.668:7): avc: denied { map } for pid=4237 comm="syzkaller291184" path="/root/syzkaller291184123" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.262347] kasan: CONFIG_KASAN_INLINE enabled [ 36.266945] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.274278] general protection fault: 0000 [#1] SMP KASAN [ 36.279781] Dumping ftrace buffer: [ 36.283287] (ftrace buffer empty) [ 36.286964] Modules linked in: [ 36.290127] CPU: 1 PID: 4240 Comm: syzkaller291184 Not tainted 4.16.0-rc5+ #358 [ 36.297539] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.306870] RIP: 0010:__lock_acquire+0xa09/0x3e00 executing program [ 36.311680] RSP: 0018:ffff8801b6047370 EFLAGS: 00010002 [ 36.317008] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 36.324246] RDX: 0000000000000046 RSI: 0000000000000000 RDI: ffffffff86ec9ce0 [ 36.331487] RBP: ffff8801b6047700 R08: ffffffff841ce509 R09: 0000000000000001 [ 36.338728] R10: 0000000000000000 R11: 0000000000000230 R12: 0000000000000000 [ 36.345966] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801ae4f4040 [ 36.353203] FS: 00007effa83a5700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 executing program executing program [ 36.361398] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.367250] CR2: 00007f381bc11000 CR3: 00000001d3937005 CR4: 00000000001606e0 [ 36.374492] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.381732] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.388969] Call Trace: [ 36.391531] ? __lock_acquire+0x664/0x3e00 [ 36.395733] ? print_irqtrace_events+0x270/0x270 [ 36.400457] ? __lockdep_init_map+0xe4/0x650 [ 36.404835] ? debug_check_no_locks_freed+0x3c0/0x3c0 executing program executing program executing program [ 36.409994] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 36.415152] ? __lock_acquire+0x664/0x3e00 [ 36.419355] ? ucma_destroy_id+0x269/0x4c0 [ 36.423562] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 36.428723] ? __might_sleep+0x95/0x190 [ 36.432663] ? ucma_destroy_id+0x269/0x4c0 [ 36.436865] ? __mutex_lock+0x16f/0x1a80 [ 36.440890] ? ucma_destroy_id+0x269/0x4c0 [ 36.445093] ? trace_hardirqs_off+0x10/0x10 [ 36.449383] ? trace_hardirqs_off+0x10/0x10 [ 36.453670] ? mutex_lock_io_nested+0x1900/0x1900 [ 36.458481] ? futex_wait+0x6a9/0x9a0 executing program executing program [ 36.462252] lock_acquire+0x1d5/0x580 [ 36.466020] ? lock_acquire+0x1d5/0x580 [ 36.469961] ? rdma_destroy_id+0xa9/0xda0 [ 36.474077] ? lock_release+0xa40/0xa40 [ 36.478017] ? lock_downgrade+0x980/0x980 [ 36.482132] ? lock_release+0xa40/0xa40 [ 36.486072] ? check_same_owner+0x320/0x320 [ 36.490358] ? do_raw_spin_trylock+0x190/0x190 [ 36.494908] _raw_spin_lock_irqsave+0x96/0xc0 [ 36.499367] ? rdma_destroy_id+0xa9/0xda0 [ 36.503482] rdma_destroy_id+0xa9/0xda0 [ 36.507426] ? trace_hardirqs_on+0xd/0x10 executing program executing program [ 36.511539] ? _raw_spin_unlock_irq+0x27/0x70 [ 36.516002] ? wait_for_completion+0xe0/0x770 [ 36.520467] ? cma_release_dev+0x350/0x350 [ 36.524669] ? wait_for_completion_interruptible+0x7e0/0x7e0 [ 36.530433] ? do_wait_intr_irq+0x3e0/0x3e0 [ 36.534723] ? do_raw_spin_trylock+0x190/0x190 [ 36.539276] ? _raw_spin_unlock_irqrestore+0x31/0xc0 [ 36.544346] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.549332] ? trace_hardirqs_on+0xd/0x10 [ 36.553446] ? complete+0x62/0x80 [ 36.556867] ucma_destroy_id+0x2e9/0x4c0 [ 36.560895] ? ucma_close+0x2f0/0x2f0 [ 36.564665] ? __might_sleep+0x95/0x190 [ 36.568610] ? kasan_check_write+0x14/0x20 [ 36.572816] ? _copy_from_user+0x99/0x110 [ 36.576933] ucma_write+0x2d6/0x3d0 [ 36.580527] ? ucma_close+0x2f0/0x2f0 [ 36.584297] ? ucma_resolve_route+0x1a0/0x1a0 [ 36.588760] ? ucma_resolve_route+0x1a0/0x1a0 [ 36.593222] __vfs_write+0xef/0x970 [ 36.596820] ? rcu_note_context_switch+0x710/0x710 [ 36.601716] ? kernel_read+0x120/0x120 [ 36.605569] ? __might_sleep+0x95/0x190 [ 36.609515] ? _cond_resched+0x14/0x30 [ 36.613371] ? __inode_security_revalidate+0xd9/0x130 [ 36.618527] ? avc_policy_seqno+0x9/0x20 [ 36.622554] ? selinux_file_permission+0x82/0x460 [ 36.627365] ? security_file_permission+0x89/0x1e0 [ 36.632261] ? rw_verify_area+0xe5/0x2b0 [ 36.636288] ? __fdget_raw+0x20/0x20 [ 36.639970] vfs_write+0x189/0x510 [ 36.643494] SyS_write+0xef/0x220 [ 36.646918] ? exit_to_usermode_loop+0x198/0x2f0 [ 36.651650] ? SyS_read+0x220/0x220 [ 36.655243] ? do_syscall_64+0xb7/0x940 [ 36.659184] ? SyS_read+0x220/0x220 [ 36.662777] do_syscall_64+0x281/0x940 [ 36.666634] ? _raw_spin_unlock_irq+0x27/0x70 [ 36.671096] ? finish_task_switch+0x1c1/0x7e0 [ 36.675562] ? syscall_return_slowpath+0x550/0x550 [ 36.680459] ? syscall_return_slowpath+0x2ac/0x550 [ 36.685357] ? prepare_exit_to_usermode+0x350/0x350 [ 36.690340] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 36.695672] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.700492] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 36.705653] RIP: 0033:0x4456a9 [ 36.708811] RSP: 002b:00007effa83a4da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 36.716486] RAX: ffffffffffffffda RBX: 00000000006dac5c RCX: 00000000004456a9 [ 36.723727] RDX: 0000000000000018 RSI: 0000000020000340 RDI: 00000000000003ff [ 36.730967] RBP: 00000000006dac58 R08: 0000000000000000 R09: 0000000000000000 [ 36.738204] R10: 0000000000000000 R11: 0000000000000246 R12: 2f646e6162696e69 [ 36.745443] R13: 666e692f7665642f R14: 0030656c69662f2e R15: 0000000000000005 [ 36.752681] 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 [ 36.771722] RIP: __lock_acquire+0xa09/0x3e00 RSP: ffff8801b6047370 [ 36.778009] ---[ end trace 9fe588802a74aa5f ]--- [ 36.782728] Kernel panic - not syncing: Fatal exception [ 36.788430] Dumping ftrace buffer: [ 36.791934] (ftrace buffer empty) [ 36.795613] Kernel Offset: disabled [ 36.799204] Rebooting in 86400 seconds..