INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added 'ci-upstream-mmots-kasan-gce-8,10.128.0.52' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   44.579529] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu
[   44.587217] usercopy: kernel memory overwrite attempt detected to ffff8801d27b9bd4 (kvm_vcpu) (1320 bytes)
[   44.588610] ------------[ cut here ]------------
[   44.589277] kernel BUG at mm/usercopy.c:84!
[   44.589858] invalid opcode: 0000 [#1] SMP KASAN
[   44.590478] Dumping ftrace buffer:
[   44.590954]    (ftrace buffer empty)
[   44.591557] Modules linked in:
[   44.591993] CPU: 0 PID: 2990 Comm: syzkaller600051 Not tainted 4.14.0-rc5-mm1+ #20
[   44.593051] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   44.594286] task: ffff8801d1d60080 task.stack: ffff8801d1e68000
[   44.595129] RIP: 0010:__check_object_size+0x3a2/0x4f0
[   44.595845] RSP: 0018:ffff8801d1e6f148 EFLAGS: 00010286
[   44.596592] RAX: 000000000000005e RBX: ffffffff8511a100 RCX: 0000000000000000
[   44.597563] RDX: 000000000000005e RSI: 1ffff1003a3cdde9 RDI: ffffed003a3cde1d
[   44.598534] RBP: ffff8801d1e6f238 R08: 0000000000000001 R09: 0000000000000000
[   44.599486] R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8511a0c0
[   44.600437] R13: ffff8801d27b9bd4 R14: 0000000000000528 R15: ffffea000749ee00
[   44.607672] FS:  000000000105e880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
[   44.615864] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   44.621714] CR2: 0000000020237000 CR3: 00000001d3234000 CR4: 00000000001426f0
[   44.628951] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   44.636187] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   44.643423] Call Trace:
[   44.645978]  ? lock_release+0xa40/0xa40
[   44.649925]  ? check_stack_object+0x140/0x140
[   44.654388]  ? check_noncircular+0x20/0x20
[   44.658594]  ? __might_sleep+0x95/0x190
[   44.662539]  kvm_vcpu_ioctl_set_cpuid2+0x75/0x1a0
[   44.667353]  kvm_arch_vcpu_ioctl+0x1718/0x4710
[   44.671903]  ? find_held_lock+0x35/0x1d0
[   44.675932]  ? kvm_arch_vcpu_put+0x3e0/0x3e0
[   44.680306]  ? depot_save_stack+0x3b5/0x490
[   44.684592]  ? lock_downgrade+0x990/0x990
[   44.688708]  ? do_raw_spin_trylock+0x190/0x190
[   44.693254]  ? is_bpf_text_address+0xa4/0x120
[   44.697716]  ? kernel_text_address+0x102/0x140
[   44.702263]  ? __kernel_text_address+0xd/0x40
[   44.706724]  ? unwind_get_return_address+0x61/0xa0
[   44.711620]  ? trace_hardirqs_off+0xd/0x10
[   44.715821]  ? _raw_spin_unlock_irqrestore+0xa6/0xba
[   44.720890]  ? depot_save_stack+0x3b5/0x490
[   44.725178]  ? __vunmap+0x247/0x2e0
[   44.728769]  ? save_stack+0xa3/0xd0
[   44.732363]  ? lock_acquire+0x1d5/0x580
[   44.736302]  ? lock_acquire+0x1d5/0x580
[   44.740245]  ? vcpu_load+0x1c/0x70
[   44.743751]  ? lock_release+0xa40/0xa40
[   44.747689]  ? trace_event_raw_event_sched_switch+0x8a0/0x8a0
[   44.753544]  ? rcu_note_context_switch+0x710/0x710
[   44.758441]  ? __might_sleep+0x95/0x190
[   44.762381]  ? vcpu_load+0x1c/0x70
[   44.765887]  ? __mutex_lock+0x16f/0x19d0
[   44.769910]  ? vcpu_load+0x1c/0x70
[   44.773417]  ? vcpu_load+0x1c/0x70
[   44.776924]  ? trace_hardirqs_off+0xd/0x10
[   44.781122]  ? mutex_lock_io_nested+0x1880/0x1880
[   44.785930]  ? find_held_lock+0x35/0x1d0
[   44.789961]  ? __might_fault+0x110/0x1d0
[   44.793985]  ? lock_downgrade+0x990/0x990
[   44.798098]  ? vmx_vcpu_load+0x9c6/0xdd0
[   44.802126]  ? handle_invept+0x5f0/0x5f0
[   44.806154]  ? __might_sleep+0x95/0x190
[   44.810096]  ? kasan_check_read+0x11/0x20
[   44.814209]  ? _copy_to_user+0xa2/0xc0
[   44.818062]  ? kvm_arch_dev_ioctl+0xc7/0x3b0
[   44.822434]  ? kvm_vm_ioctl_check_extension+0x510/0x510
[   44.827765]  ? kvm_arch_vcpu_load+0x1c1/0x890
[   44.832225]  ? kvm_arch_vcpu_load+0x4b1/0x890
[   44.836687]  ? find_held_lock+0x35/0x1d0
[   44.840714]  ? kvm_arch_dev_ioctl+0x3b0/0x3b0
[   44.845173]  ? __hrtick_start+0x1d0/0x1d0
[   44.849303]  ? avc_has_extended_perms+0x6e5/0x12c0
[   44.854207]  ? vcpu_load+0x4b/0x70
[   44.857713]  kvm_vcpu_ioctl+0x240/0x1010
[   44.861742]  ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0
[   44.866984]  ? is_bpf_text_address+0xa4/0x120
[   44.871448]  ? avc_has_extended_perms+0x7fa/0x12c0
[   44.876341]  ? unwind_get_return_address+0x6e/0xa0
[   44.881240]  ? avc_ss_reset+0x110/0x110
[   44.885180]  ? putname+0xee/0x130
[   44.888599]  ? save_stack+0xa3/0xd0
[   44.892191]  ? save_stack+0x43/0xd0
[   44.895781]  ? kasan_slab_free+0x71/0xc0
[   44.899814]  ? kmem_cache_free+0x77/0x280
[   44.903936]  ? putname+0xee/0x130
[   44.907355]  ? do_sys_open+0x31b/0x6d0
[   44.911208]  ? __lock_is_held+0xb6/0x140
[   44.915243]  ? trace_event_raw_event_sched_switch+0x8a0/0x8a0
[   44.921096]  ? rcu_note_context_switch+0x710/0x710
[   44.925990]  ? get_unused_fd_flags+0x190/0x190
[   44.930540]  ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0
[   44.935778]  do_vfs_ioctl+0x1b1/0x1520
[   44.939630]  ? _cond_resched+0x14/0x30
[   44.943487]  ? ioctl_preallocate+0x2b0/0x2b0
[   44.947862]  ? selinux_capable+0x40/0x40
[   44.951889]  ? putname+0xf3/0x130
[   44.955309]  ? do_sys_open+0x320/0x6d0
[   44.959166]  ? security_file_ioctl+0x89/0xb0
[   44.963540]  SyS_ioctl+0x8f/0xc0
[   44.966874]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   44.971595] RIP: 0033:0x442f87
[   44.974749] RSP: 002b:00007ffe1675e638 EFLAGS: 00000217 ORIG_RAX: 0000000000000010
[   44.982422] RAX: ffffffffffffffda RBX: 00007ffe1675ed10 RCX: 0000000000442f87
[   44.989658] RDX: 00007ffe1675ed10 RSI: 000000004008ae90 RDI: 0000000000000005
[   44.996893] RBP: 0000000000000082 R08: 0000000000000001 R09: 0000000000000000
[   45.004128] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004040a0
[   45.011366] R13: 0000000000404130 R14: 0000000000000000 R15: 0000000000000000
[   45.018609] Code: 48 0f 44 da e8 e0 d7 c3 ff 48 8b 85 28 ff ff ff 4d 89 f1 4c 89 e9 4c 89 e2 48 89 de 48 c7 c7 c0 a1 11 85 49 89 c0 e8 33 e3 ad ff <0f> 0b 48 c7 c0 80 9f 11 85 eb 96 48 c7 c0 c0 9f 11 85 eb 8d 48 
[   45.037671] RIP: __check_object_size+0x3a2/0x4f0 RSP: ffff8801d1e6f148
[   45.044365] ---[ end trace 9c15fa17a99c2fd6 ]---
[   45.049132] Kernel panic - not syncing: Fatal exception
[   45.054492] Dumping ftrace buffer:
[   45.057999]    (ftrace buffer empty)
[   45.061675] Kernel Offset: disabled
[   45.065270] Rebooting in 86400 seconds..