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-6,10.128.0.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.972980] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 30.986364] usercopy: kernel memory overwrite attempt detected to ffff8801cddd9bd4 (kvm_vcpu) (1320 bytes) [ 30.996824] ------------[ cut here ]------------ [ 31.001676] kernel BUG at mm/usercopy.c:84! [ 31.006040] invalid opcode: 0000 [#1] SMP KASAN [ 31.010682] Dumping ftrace buffer: [ 31.014190] (ftrace buffer empty) [ 31.017871] Modules linked in: [ 31.021036] CPU: 1 PID: 2985 Comm: syzkaller222853 Not tainted 4.14.0-rc3-mm1+ #14 [ 31.028707] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.038030] task: ffff8801d0364280 task.stack: ffff8801ce020000 [ 31.044059] RIP: 0010:__check_object_size+0x3a2/0x4f0 [ 31.049211] RSP: 0018:ffff8801ce027148 EFLAGS: 00010286 [ 31.054541] RAX: 000000000000005e RBX: ffffffff84f1a1e0 RCX: 0000000000000000 [ 31.061778] RDX: 000000000000005e RSI: 1ffff10039c04de9 RDI: ffffed0039c04e1d [ 31.069012] RBP: ffff8801ce027238 R08: ffff8801ce026838 R09: 0000000000000000 [ 31.076249] R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff84f1a1a0 [ 31.083483] R13: ffff8801cddd9bd4 R14: 0000000000000528 R15: ffffea0007377600 [ 31.090720] FS: 000000000171e880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 31.098909] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.104755] CR2: 0000000020007000 CR3: 00000001ce957000 CR4: 00000000001426e0 [ 31.111996] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.119230] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.126463] Call Trace: [ 31.129021] ? lock_release+0xd70/0xd70 [ 31.132966] ? check_stack_object+0x140/0x140 [ 31.137432] ? __might_sleep+0x95/0x190 [ 31.141378] kvm_vcpu_ioctl_set_cpuid2+0x75/0x1a0 [ 31.146189] kvm_arch_vcpu_ioctl+0x1718/0x4710 [ 31.150742] ? kvm_arch_vcpu_put+0x3e0/0x3e0 [ 31.155117] ? depot_save_stack+0x1c2/0x490 [ 31.159412] ? do_raw_spin_trylock+0x190/0x190 [ 31.163977] ? is_bpf_text_address+0xa4/0x120 [ 31.168443] ? kernel_text_address+0x102/0x140 [ 31.172994] ? __kernel_text_address+0xd/0x40 [ 31.177464] ? unwind_get_return_address+0x61/0xa0 [ 31.182470] ? trace_hardirqs_off+0xd/0x10 [ 31.186674] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 31.191744] ? depot_save_stack+0x3b5/0x490 [ 31.196037] ? __vunmap+0x247/0x2e0 [ 31.199633] ? save_stack+0xa3/0xd0 [ 31.203231] ? save_stack_trace+0x16/0x20 [ 31.207346] ? lock_acquire+0x1d5/0x580 [ 31.211288] ? vcpu_load+0x1c/0x70 [ 31.214800] ? lock_release+0xd70/0xd70 [ 31.218741] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 31.224596] ? rcu_note_context_switch+0x710/0x710 [ 31.229492] ? __might_sleep+0x95/0x190 [ 31.233430] ? vcpu_load+0x1c/0x70 [ 31.236934] ? __mutex_lock+0x16f/0x19d0 [ 31.240959] ? vcpu_load+0x1c/0x70 [ 31.244466] ? vcpu_load+0x1c/0x70 [ 31.247975] ? mutex_lock_io_nested+0x1880/0x1880 [ 31.252784] ? lock_downgrade+0x990/0x990 [ 31.256901] ? __might_fault+0xe0/0x1d0 [ 31.260843] ? vmx_vcpu_load+0x9c6/0xdd0 [ 31.264874] ? handle_invept+0x5f0/0x5f0 [ 31.268903] ? __might_sleep+0x95/0x190 [ 31.272848] ? kasan_check_read+0x11/0x20 [ 31.276961] ? _copy_to_user+0xa2/0xc0 [ 31.280817] ? kvm_arch_dev_ioctl+0xc7/0x3b0 [ 31.285191] ? kvm_vm_ioctl_check_extension+0x510/0x510 [ 31.290519] ? find_held_lock+0x39/0x1d0 [ 31.294550] ? kvm_arch_vcpu_load+0x1c1/0x890 [ 31.299238] ? kvm_arch_vcpu_load+0x4b1/0x890 [ 31.303703] ? lock_downgrade+0x990/0x990 [ 31.307822] ? kvm_arch_dev_ioctl+0x3b0/0x3b0 [ 31.312284] ? __hrtick_start+0x1d0/0x1d0 [ 31.316410] ? avc_has_extended_perms+0xef/0x12c0 [ 31.321227] ? vcpu_load+0x4b/0x70 [ 31.324737] kvm_vcpu_ioctl+0x240/0x1010 [ 31.328767] ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0 [ 31.334012] ? is_bpf_text_address+0xa4/0x120 [ 31.338478] ? avc_has_extended_perms+0x7fa/0x12c0 [ 31.343373] ? unwind_get_return_address+0x8e/0xa0 [ 31.348276] ? avc_ss_reset+0x110/0x110 [ 31.352220] ? putname+0xee/0x130 [ 31.355642] ? save_stack+0xa3/0xd0 [ 31.359237] ? save_stack_trace+0x16/0x20 [ 31.363349] ? save_stack+0x43/0xd0 [ 31.366941] ? kasan_slab_free+0x71/0xc0 [ 31.370965] ? kmem_cache_free+0x77/0x280 [ 31.375076] ? putname+0xee/0x130 [ 31.378500] ? __lock_is_held+0xbc/0x140 [ 31.382536] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 31.388391] ? rcu_note_context_switch+0x710/0x710 [ 31.393288] ? get_unused_fd_flags+0x190/0x190 [ 31.397841] ? __kvm_gfn_to_hva_cache_init+0xbb0/0xbb0 [ 31.403084] do_vfs_ioctl+0x1b1/0x1530 [ 31.406939] ? _cond_resched+0x14/0x30 [ 31.410796] ? ioctl_preallocate+0x2b0/0x2b0 [ 31.415172] ? selinux_capable+0x40/0x40 [ 31.419202] ? putname+0xf3/0x130 [ 31.422628] ? do_sys_open+0x320/0x6d0 [ 31.426489] ? security_file_ioctl+0x89/0xb0 [ 31.430867] SyS_ioctl+0x8f/0xc0 [ 31.434204] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 31.438930] RIP: 0033:0x442fa7 [ 31.442088] RSP: 002b:00007ffcdb48c208 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 31.449762] RAX: ffffffffffffffda RBX: 00007ffcdb48c8e0 RCX: 0000000000442fa7 [ 31.457000] RDX: 00007ffcdb48c8e0 RSI: 000000004008ae90 RDI: 0000000000000005 [ 31.464237] RBP: 0000000000000086 R08: 0000000000000001 R09: 000000000000007a [ 31.471475] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004040c0 [ 31.478712] R13: 0000000000404150 R14: 0000000000000000 R15: 0000000000000000 [ 31.485958] Code: 48 0f 44 da e8 a0 53 c4 ff 48 8b 85 28 ff ff ff 4d 89 f1 4c 89 e9 4c 89 e2 48 89 de 48 c7 c7 a0 a2 f1 84 49 89 c0 e8 33 61 ae ff <0f> 0b 48 c7 c0 60 a0 f1 84 eb 96 48 c7 c0 a0 a0 f1 84 eb 8d 48 [ 31.505035] RIP: __check_object_size+0x3a2/0x4f0 RSP: ffff8801ce027148 [ 31.511752] ---[ end trace 7b3a1d48d27dab48 ]--- [ 31.516692] Kernel panic - not syncing: Fatal exception [ 31.522421] Dumping ftrace buffer: [ 31.525941] (ftrace buffer empty) [ 31.529619] Kernel Offset: disabled [ 31.533216] Rebooting in 86400 seconds..