Warning: Permanently added '10.128.0.116' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.482009] audit: type=1400 audit(1602692636.739:8): avc: denied { execmem } for pid=6346 comm="syz-executor926" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 34.483709] kasan: CONFIG_KASAN_INLINE enabled [ 34.507667] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.515280] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.521498] Modules linked in: [ 34.524668] CPU: 0 PID: 6346 Comm: syz-executor926 Not tainted 4.14.198-syzkaller #0 [ 34.532537] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.542301] task: ffff8880981aa440 task.stack: ffff888086248000 [ 34.548349] RIP: 0010:vhost_chr_write_iter+0x863/0x10f0 [ 34.553696] RSP: 0018:ffff88808624fc00 EFLAGS: 00010246 [ 34.559037] RAX: dffffc0000000000 RBX: ffff888087500180 RCX: 0000000000000000 [ 34.566286] RDX: 0000000000000002 RSI: ffffffff8a1371d0 RDI: ffff888087500240 [ 34.573545] RBP: ffffed1010ea0041 R08: 0000000000000000 R09: 0000000000000000 [ 34.580798] R10: 0000000000000002 R11: ffff8880981aa440 R12: 0000000000000002 [ 34.588048] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff11010c49f87 [ 34.595329] FS: 0000000000da5880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 34.603529] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.609393] CR2: 00000000200001c0 CR3: 000000008b739000 CR4: 00000000001406f0 [ 34.616640] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.623961] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.631212] Call Trace: [ 34.633801] ? path_lookupat+0x780/0x780 [ 34.637839] ? log_write_hva+0x310/0x310 [ 34.641877] ? debug_check_no_obj_freed+0x2c0/0x674 [ 34.646898] ? lock_downgrade+0x740/0x740 [ 34.651024] ? iov_iter_init+0xa6/0x1c0 [ 34.654975] __vfs_write+0x44c/0x630 [ 34.658677] ? kernel_read+0x110/0x110 [ 34.662631] ? rw_verify_area+0xe1/0x2a0 [ 34.666763] vfs_write+0x17f/0x4d0 [ 34.670278] SyS_write+0xf2/0x210 [ 34.673723] ? SyS_read+0x210/0x210 [ 34.677339] ? __do_page_fault+0x19a/0xb50 [ 34.681555] ? do_syscall_64+0x4c/0x640 [ 34.685502] ? SyS_read+0x210/0x210 [ 34.689106] do_syscall_64+0x1d5/0x640 [ 34.692974] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 34.698145] RIP: 0033:0x440279 [ 34.701310] RSP: 002b:00007ffe6002ead8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 34.708996] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440279 [ 34.716247] RDX: 0000000000000048 RSI: 0000000020000140 RDI: 0000000000000003 [ 34.723593] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 34.730848] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a80 [ 34.738119] R13: 0000000000401b10 R14: 0000000000000000 R15: 0000000000000000 [ 34.745396] Code: ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 cd 06 00 00 4c 8b ab c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e9 48 c1 e9 03 <80> 3c 01 00 0f 85 96 06 00 00 49 8b 6d 00 48 85 ed 0f 84 e4 03 [ 34.766242] RIP: vhost_chr_write_iter+0x863/0x10f0 RSP: ffff88808624fc00 [ 34.773609] ---[ end trace 7c60d0cb52da2d86 ]--- [ 34.778365] Kernel panic - not syncing: Fatal exception [ 34.784335] Kernel Offset: disabled [ 34.787956] Rebooting in 86400 seconds..