random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN CPU: 1 PID: 4363 Comm: syz-executor178 Not tainted 4.18.0-rc8-next-20180808+ #34 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__fire_sched_out_preempt_notifiers kernel/sched/core.c:2497 [inline] RIP: 0010:fire_sched_out_preempt_notifiers kernel/sched/core.c:2505 [inline] RIP: 0010:prepare_task_switch kernel/sched/core.c:2611 [inline] RIP: 0010:context_switch kernel/sched/core.c:2788 [inline] RIP: 0010:__schedule+0x1061/0x1ec0 kernel/sched/core.c:3471 Code: 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 0f 85 ea 08 00 00 4d 8b 6d 00 4d 85 ed 0f 84 6b f6 ff ff 49 8d 7d 10 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 a6 e8 43 fd 03 fb eb 9f 4c 89 e6 48 89 df e8 e6 RSP: 0018:ffff8801ad7aea80 EFLAGS: 00010806 RAX: 1bd5a00000000022 RBX: ffff8801afcf0240 RCX: 1ffff1003599188f RDX: 0000000040000000 RSI: 0000000000000000 RDI: dead000000000110 RBP: ffff8801ad7aec50 R08: ffff8801afcf0240 R09: fffff520003c2a47 R10: fffff520003c2a47 R11: ffffc90001e1523b R12: ffff8801d9858640 R13: dead000000000100 R14: dffffc0000000000 R15: ffff8801db12ca40 FS: 000000000252d880(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000007e6a000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: preempt_schedule_common+0x22/0x60 kernel/sched/core.c:3595 _cond_resched+0x1d/0x30 kernel/sched/core.c:4961 __mutex_lock_common kernel/locking/mutex.c:908 [inline] __mutex_lock+0x13d/0x1700 kernel/locking/mutex.c:1073 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1088 arch_jump_label_transform+0x1b/0x40 arch/x86/kernel/jump_label.c:112 __jump_label_update+0x16e/0x1a0 kernel/jump_label.c:375 jump_label_update+0x151/0x2e0 kernel/jump_label.c:760 __static_key_slow_dec_cpuslocked+0xb8/0x210 kernel/jump_label.c:205 __static_key_slow_dec kernel/jump_label.c:215 [inline] static_key_slow_dec+0x63/0xa0 kernel/jump_label.c:229 kvm_arch_vcpu_uninit+0x18e/0x1d0 arch/x86/kvm/x86.c:8771 kvm_vcpu_uninit+0x44/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:337 vmx_free_vcpu+0x23a/0x300 arch/x86/kvm/vmx.c:10675 kvm_arch_vcpu_free arch/x86/kvm/x86.c:8387 [inline] kvm_free_vcpus arch/x86/kvm/x86.c:8836 [inline] kvm_arch_destroy_vm+0x365/0x7c0 arch/x86/kvm/x86.c:8933 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:752 [inline] kvm_put_kvm+0x73f/0x1060 arch/x86/kvm/../../../virt/kvm/kvm_main.c:773 kvm_vm_release+0x42/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:784 __fput+0x376/0x8a0 fs/file_table.c:279 ____fput+0x15/0x20 fs/file_table.c:312 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x1b25/0x2760 kernel/exit.c:869 do_group_exit+0x177/0x440 kernel/exit.c:972 __do_sys_exit_group kernel/exit.c:983 [inline] __se_sys_exit_group kernel/exit.c:981 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:981 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x43ef48 Code: Bad RIP value. RSP: 002b:00007ffcac28c248 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ef48 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004be808 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 92cb16ec20098b61 ]--- RIP: 0010:__fire_sched_out_preempt_notifiers kernel/sched/core.c:2497 [inline] RIP: 0010:fire_sched_out_preempt_notifiers kernel/sched/core.c:2505 [inline] RIP: 0010:prepare_task_switch kernel/sched/core.c:2611 [inline] RIP: 0010:context_switch kernel/sched/core.c:2788 [inline] RIP: 0010:__schedule+0x1061/0x1ec0 kernel/sched/core.c:3471 Code: 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 0f 85 ea 08 00 00 4d 8b 6d 00 4d 85 ed 0f 84 6b f6 ff ff 49 8d 7d 10 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 a6 e8 43 fd 03 fb eb 9f 4c 89 e6 48 89 df e8 e6 RSP: 0018:ffff8801ad7aea80 EFLAGS: 00010806 RAX: 1bd5a00000000022 RBX: ffff8801afcf0240 RCX: 1ffff1003599188f RDX: 0000000040000000 RSI: 0000000000000000 RDI: dead000000000110 RBP: ffff8801ad7aec50 R08: ffff8801afcf0240 R09: fffff520003c2a47 R10: fffff520003c2a47 R11: ffffc90001e1523b R12: ffff8801d9858640 R13: dead000000000100 R14: dffffc0000000000 R15: ffff8801db12ca40 FS: 000000000252d880(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000043ef1e CR3: 0000000007e6a000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400