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WARNING: bad usercopy in __kvm_write_guest_page | 1 (2) | 2018/05/27 00:58 |
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WARNING: bad usercopy in __kvm_write_guest_page | 1 (2) | 2018/05/27 00:58 |
random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) ------------[ cut here ]------------ Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLAB object 'kvm_vcpu' (offset 23192, size 8)! WARNING: CPU: 0 PID: 4554 at mm/usercopy.c:81 usercopy_warn+0xf5/0x120 mm/usercopy.c:76 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 4554 Comm: syz-executor726 Not tainted 4.17.0-rc5+ #58 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 panic+0x22f/0x4de kernel/panic.c:184 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536 report_bug+0x252/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1de/0x490 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992 RIP: 0010:usercopy_warn+0xf5/0x120 mm/usercopy.c:76 RSP: 0018:ffff8801ad54f0b0 EFLAGS: 00010286 RAX: 000000000000007e RBX: ffffffff889d52f0 RCX: ffffffff8160aa5d RDX: 0000000000000000 RSI: ffffffff8160f711 RDI: ffff8801ad54ec10 RBP: ffff8801ad54f110 R08: ffff8801d96c8680 R09: 0000000000000006 R10: ffff8801d96c8680 R11: 0000000000000000 R12: ffffffff87d2fa60 R13: ffffffff87c19ec0 R14: 0000000000000000 R15: 0000000000000008 __check_heap_object+0x89/0xb5 mm/slab.c:4440 check_heap_object mm/usercopy.c:236 [inline] __check_object_size+0x4c7/0x5d9 mm/usercopy.c:259 check_object_size include/linux/thread_info.h:108 [inline] __copy_to_user include/linux/uaccess.h:104 [inline] __kvm_write_guest_page+0x90/0x140 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1828 kvm_vcpu_write_guest_page arch/x86/kvm/../../../virt/kvm/kvm_main.c:1849 [inline] kvm_vcpu_write_guest+0x65/0xe0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1883 kvm_write_guest_virt_system+0x8a/0x190 arch/x86/kvm/x86.c:4843 handle_vmptrst+0x1d2/0x260 arch/x86/kvm/vmx.c:8196 vmx_handle_exit+0x2c0/0x17b0 arch/x86/kvm/vmx.c:9234 vcpu_enter_guest+0x13af/0x6060 arch/x86/kvm/x86.c:7503 vcpu_run arch/x86/kvm/x86.c:7565 [inline] kvm_arch_vcpu_ioctl_run+0x33e/0x1690 arch/x86/kvm/x86.c:7742 kvm_vcpu_ioctl+0x79d/0x12e0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2560 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x1cf/0x16a0 fs/ioctl.c:684 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:706 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x443039 RSP: 002b:00007ffc272242b8 EFLAGS: 00000286 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000443039 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 00000000006cd018 R08: 0000000020000580 R09: 0000000020000580 R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000404080 R13: 0000000000404110 R14: 0000000000000000 R15: 0000000000000000 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2018/05/19 18:49 | upstream | 73fcb1a370c7 | 849705db | .config | console log | report | syz | C | ci-upstream-kasan-gce-root | |||
2018/05/19 01:40 | upstream | 2c71d338bef2 | 849705db | .config | console log | report | syz | C | ci-upstream-kasan-gce | |||
2018/05/19 01:20 | upstream | 2c71d338bef2 | 849705db | .config | console log | report | ci-upstream-kasan-gce | |||||
2018/03/16 01:59 | upstream | e2c15aff5f35 | 08dacaa0 | .config | console log | report | ci-upstream-kasan-gce |