* kvm: WARNING in exception_type
@ 2016-01-08 15:42 Dmitry Vyukov
2016-01-15 17:11 ` Dmitry Vyukov
0 siblings, 1 reply; 4+ messages in thread
From: Dmitry Vyukov @ 2016-01-08 15:42 UTC (permalink / raw)
To: Gleb Natapov, Paolo Bonzini, Thomas Gleixner, Ingo Molnar,
H. Peter Anvin, x86, kvm, LKML
Cc: syzkaller, Kostya Serebryany, Alexander Potapenko, Eric Dumazet,
Sasha Levin
Hello,
The following program triggers WARNING in exception_type:
// autogenerated by syzkaller (http://github.com/google/syzkaller)
#include <unistd.h>
#include <sys/syscall.h>
#include <string.h>
#include <stdint.h>
long r[31];
int main()
{
memset(r, -1, sizeof(r));
r[0] = syscall(SYS_mmap, 0x20000000ul, 0x20000ul, 0x3ul,
0x32ul, 0xfffffffffffffffful, 0x0ul);
memcpy((void*)0x20004000, "\x2f\x64\x65\x76\x2f\x6b\x76\x6d", 8);
r[2] = syscall(SYS_open, 0x20004000ul, 0x0ul, 0x0ul, 0, 0, 0);
r[3] = syscall(SYS_ioctl, r[2], 0xae01ul, 0x0ul, 0, 0, 0);
*(uint32_t*)0x2000fff8 = (uint32_t)0x8;
*(uint32_t*)0x2000fffc = (uint32_t)0xae84;
r[6] = syscall(SYS_ioctl, r[3], 0x4008ae61ul, 0x2000fff8ul, 0, 0, 0);
r[7] = syscall(SYS_ioctl, r[3], 0xae41ul, 0x0ul, 0, 0, 0);
*(uint8_t*)0x20011e0f = (uint8_t)0x9;
*(uint8_t*)0x20011e10 = (uint8_t)0x9d4;
*(uint8_t*)0x20011e11 = (uint8_t)0x9;
*(uint8_t*)0x20011e12 = (uint8_t)0x8;
*(uint32_t*)0x20011e13 = (uint32_t)0x1;
*(uint8_t*)0x20011e17 = (uint8_t)0x5;
*(uint8_t*)0x20011e18 = (uint8_t)0x482;
*(uint8_t*)0x20011e19 = (uint8_t)0x0;
*(uint8_t*)0x20011e1a = (uint8_t)0x5;
*(uint8_t*)0x20011e1b = (uint8_t)0x6;
*(uint8_t*)0x20011e1c = (uint8_t)0x1;
*(uint8_t*)0x20011e1d = (uint8_t)0xf382;
*(uint8_t*)0x20011e1e = (uint8_t)0x1b5;
*(uint32_t*)0x20011e1f = (uint32_t)0x9;
*(uint32_t*)0x20011e23 = (uint32_t)0x3;
*(uint8_t*)0x20011e27 = (uint8_t)0x1;
*(uint8_t*)0x20011e28 = (uint8_t)0x5;
*(uint8_t*)0x20011e29 = (uint8_t)0x6;
*(uint8_t*)0x20011e2a = (uint8_t)0x0;
r[27] = syscall(SYS_ioctl, r[7], 0x4040aea0ul, 0x20011e0ful, 0, 0, 0);
memcpy((void*)0x20012f83,
"\x29\xac\x42\x56\xbf\x67\x61\x4f\x07\xb8\xde\x10\x83\x05\x7b\x55\x68\x42\xcb\x36\x97\x84\xff\x6a\x69\x10\x05\x63\xb0\x27\xa5\xbf\xe8\x7b\xe2\xe8\x73\x5d\x7a\x1f\x9f\x48\x9a\xc6\xdf\x4e\x6f\xdd\xb2\xbe\x06\x5c\x2c\x3f\xa7\xf7\x6c\xb7\x02\x9e\x7c\x27\x47\x53\xc0\x4f\xe3\xcd\x7e\xe0\xcb\xe2\x57\xbb\x54\x99\xb0\xac\x01\x6a\x99\xd5\x3d\x95\x3f\x78\x07\xa8\xf2\xf1\x57\x1e\x02\x85\x52\xbb\x53\x8e\x63\x45\x86\x23\xf5\xcb\x04\x40\x5b\xe8\x4b\x22\x1e\xbe\xff\x01\xe6\x1c\x95\x15\xb5\x4a\x37\xa7\x4c\xf4\x3e",
125);
r[29] = syscall(SYS_ioctl, r[7], 0x4138ae84ul, 0x20012f83ul, 0, 0, 0);
r[30] = syscall(SYS_ioctl, r[7], 0xae80ul, 0, 0, 0, 0);
return 0;
}
------------[ cut here ]------------
WARNING: CPU: 1 PID: 10173 at arch/x86/kvm/x86.c:345 exception_type+0x73/0x80()
Modules linked in:
CPU: 1 PID: 10173 Comm: a.out Tainted: G W 4.4.0-rc8+ #211
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
00000000ffffffff ffff880035347a08 ffffffff82907ccd 0000000000000000
ffff880033f82f00 ffffffff85ed4540 ffff880035347a48 ffffffff8133f979
ffffffff81036893 ffffffff85ed4540 0000000000000159 ffff880034138030
Call Trace:
[< inline >] __dump_stack lib/dump_stack.c:15
[<ffffffff82907ccd>] dump_stack+0x6f/0xa2 lib/dump_stack.c:50
[<ffffffff8133f979>] warn_slowpath_common+0xd9/0x140 kernel/panic.c:460
[<ffffffff8133fba9>] warn_slowpath_null+0x29/0x30 kernel/panic.c:493
[<ffffffff81036893>] exception_type+0x73/0x80 arch/x86/kvm/x86.c:345
[< inline >] inject_pending_event arch/x86/kvm/x86.c:5990
[< inline >] vcpu_enter_guest arch/x86/kvm/x86.c:6471
[< inline >] vcpu_run arch/x86/kvm/x86.c:6660
[<ffffffff8106b1c4>] kvm_arch_vcpu_ioctl_run+0x3554/0x5800
arch/x86/kvm/x86.c:6818
[<ffffffff8101cf61>] kvm_vcpu_ioctl+0x5f1/0xd00
arch/x86/kvm/../../../virt/kvm/kvm_main.c:2375
[< inline >] vfs_ioctl fs/ioctl.c:43
[<ffffffff817b66f1>] do_vfs_ioctl+0x681/0xe40 fs/ioctl.c:607
[< inline >] SYSC_ioctl fs/ioctl.c:622
[<ffffffff817b6f3f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:613
[<ffffffff85e77af6>] entry_SYSCALL_64_fastpath+0x16/0x7a
arch/x86/entry/entry_64.S:185
---[ end trace 6d1cb7e02f8364e9 ]---
On commit b06f3a168cdcd80026276898fd1fee443ef25743 (Jan 6).
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: kvm: WARNING in exception_type
2016-01-08 15:42 kvm: WARNING in exception_type Dmitry Vyukov
@ 2016-01-15 17:11 ` Dmitry Vyukov
2016-01-15 17:29 ` Paolo Bonzini
0 siblings, 1 reply; 4+ messages in thread
From: Dmitry Vyukov @ 2016-01-15 17:11 UTC (permalink / raw)
To: Gleb Natapov, Paolo Bonzini, Thomas Gleixner, Ingo Molnar,
H. Peter Anvin, x86, kvm, LKML, mtosatti, yoshikawa_takuya_b1,
guangrong.xiao
Cc: syzkaller, Kostya Serebryany, Alexander Potapenko, Eric Dumazet,
Sasha Levin
2016-01-08 16:42 GMT+01:00 Dmitry Vyukov <dvyukov@google.com>:
> Hello,
> The following program triggers WARNING in exception_type:
>
> // autogenerated by syzkaller (http://github.com/google/syzkaller)
> #include <unistd.h>
> #include <sys/syscall.h>
> #include <string.h>
> #include <stdint.h>
>
> long r[31];
>
> int main()
> {
> memset(r, -1, sizeof(r));
> r[0] = syscall(SYS_mmap, 0x20000000ul, 0x20000ul, 0x3ul,
> 0x32ul, 0xfffffffffffffffful, 0x0ul);
> memcpy((void*)0x20004000, "\x2f\x64\x65\x76\x2f\x6b\x76\x6d", 8);
> r[2] = syscall(SYS_open, 0x20004000ul, 0x0ul, 0x0ul, 0, 0, 0);
> r[3] = syscall(SYS_ioctl, r[2], 0xae01ul, 0x0ul, 0, 0, 0);
> *(uint32_t*)0x2000fff8 = (uint32_t)0x8;
> *(uint32_t*)0x2000fffc = (uint32_t)0xae84;
> r[6] = syscall(SYS_ioctl, r[3], 0x4008ae61ul, 0x2000fff8ul, 0, 0, 0);
> r[7] = syscall(SYS_ioctl, r[3], 0xae41ul, 0x0ul, 0, 0, 0);
> *(uint8_t*)0x20011e0f = (uint8_t)0x9;
> *(uint8_t*)0x20011e10 = (uint8_t)0x9d4;
> *(uint8_t*)0x20011e11 = (uint8_t)0x9;
> *(uint8_t*)0x20011e12 = (uint8_t)0x8;
> *(uint32_t*)0x20011e13 = (uint32_t)0x1;
> *(uint8_t*)0x20011e17 = (uint8_t)0x5;
> *(uint8_t*)0x20011e18 = (uint8_t)0x482;
> *(uint8_t*)0x20011e19 = (uint8_t)0x0;
> *(uint8_t*)0x20011e1a = (uint8_t)0x5;
> *(uint8_t*)0x20011e1b = (uint8_t)0x6;
> *(uint8_t*)0x20011e1c = (uint8_t)0x1;
> *(uint8_t*)0x20011e1d = (uint8_t)0xf382;
> *(uint8_t*)0x20011e1e = (uint8_t)0x1b5;
> *(uint32_t*)0x20011e1f = (uint32_t)0x9;
> *(uint32_t*)0x20011e23 = (uint32_t)0x3;
> *(uint8_t*)0x20011e27 = (uint8_t)0x1;
> *(uint8_t*)0x20011e28 = (uint8_t)0x5;
> *(uint8_t*)0x20011e29 = (uint8_t)0x6;
> *(uint8_t*)0x20011e2a = (uint8_t)0x0;
> r[27] = syscall(SYS_ioctl, r[7], 0x4040aea0ul, 0x20011e0ful, 0, 0, 0);
> memcpy((void*)0x20012f83,
> "\x29\xac\x42\x56\xbf\x67\x61\x4f\x07\xb8\xde\x10\x83\x05\x7b\x55\x68\x42\xcb\x36\x97\x84\xff\x6a\x69\x10\x05\x63\xb0\x27\xa5\xbf\xe8\x7b\xe2\xe8\x73\x5d\x7a\x1f\x9f\x48\x9a\xc6\xdf\x4e\x6f\xdd\xb2\xbe\x06\x5c\x2c\x3f\xa7\xf7\x6c\xb7\x02\x9e\x7c\x27\x47\x53\xc0\x4f\xe3\xcd\x7e\xe0\xcb\xe2\x57\xbb\x54\x99\xb0\xac\x01\x6a\x99\xd5\x3d\x95\x3f\x78\x07\xa8\xf2\xf1\x57\x1e\x02\x85\x52\xbb\x53\x8e\x63\x45\x86\x23\xf5\xcb\x04\x40\x5b\xe8\x4b\x22\x1e\xbe\xff\x01\xe6\x1c\x95\x15\xb5\x4a\x37\xa7\x4c\xf4\x3e",
> 125);
> r[29] = syscall(SYS_ioctl, r[7], 0x4138ae84ul, 0x20012f83ul, 0, 0, 0);
> r[30] = syscall(SYS_ioctl, r[7], 0xae80ul, 0, 0, 0, 0);
> return 0;
> }
>
>
> ------------[ cut here ]------------
> WARNING: CPU: 1 PID: 10173 at arch/x86/kvm/x86.c:345 exception_type+0x73/0x80()
> Modules linked in:
> CPU: 1 PID: 10173 Comm: a.out Tainted: G W 4.4.0-rc8+ #211
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
> 00000000ffffffff ffff880035347a08 ffffffff82907ccd 0000000000000000
> ffff880033f82f00 ffffffff85ed4540 ffff880035347a48 ffffffff8133f979
> ffffffff81036893 ffffffff85ed4540 0000000000000159 ffff880034138030
> Call Trace:
> [< inline >] __dump_stack lib/dump_stack.c:15
> [<ffffffff82907ccd>] dump_stack+0x6f/0xa2 lib/dump_stack.c:50
> [<ffffffff8133f979>] warn_slowpath_common+0xd9/0x140 kernel/panic.c:460
> [<ffffffff8133fba9>] warn_slowpath_null+0x29/0x30 kernel/panic.c:493
> [<ffffffff81036893>] exception_type+0x73/0x80 arch/x86/kvm/x86.c:345
> [< inline >] inject_pending_event arch/x86/kvm/x86.c:5990
> [< inline >] vcpu_enter_guest arch/x86/kvm/x86.c:6471
> [< inline >] vcpu_run arch/x86/kvm/x86.c:6660
> [<ffffffff8106b1c4>] kvm_arch_vcpu_ioctl_run+0x3554/0x5800
> arch/x86/kvm/x86.c:6818
> [<ffffffff8101cf61>] kvm_vcpu_ioctl+0x5f1/0xd00
> arch/x86/kvm/../../../virt/kvm/kvm_main.c:2375
> [< inline >] vfs_ioctl fs/ioctl.c:43
> [<ffffffff817b66f1>] do_vfs_ioctl+0x681/0xe40 fs/ioctl.c:607
> [< inline >] SYSC_ioctl fs/ioctl.c:622
> [<ffffffff817b6f3f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:613
> [<ffffffff85e77af6>] entry_SYSCALL_64_fastpath+0x16/0x7a
> arch/x86/entry/entry_64.S:185
> ---[ end trace 6d1cb7e02f8364e9 ]---
>
>
> On commit b06f3a168cdcd80026276898fd1fee443ef25743 (Jan 6).
+ more kvm people
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: kvm: WARNING in exception_type
2016-01-15 17:11 ` Dmitry Vyukov
@ 2016-01-15 17:29 ` Paolo Bonzini
2016-01-15 18:49 ` Nadav Amit
0 siblings, 1 reply; 4+ messages in thread
From: Paolo Bonzini @ 2016-01-15 17:29 UTC (permalink / raw)
To: Dmitry Vyukov, Gleb Natapov, Thomas Gleixner, Ingo Molnar,
H. Peter Anvin, x86, kvm, LKML, mtosatti, yoshikawa_takuya_b1,
guangrong.xiao
Cc: syzkaller, Kostya Serebryany, Alexander Potapenko, Eric Dumazet,
Sasha Levin
On 15/01/2016 18:11, Dmitry Vyukov wrote:
> 2016-01-08 16:42 GMT+01:00 Dmitry Vyukov <dvyukov@google.com>:
>> Hello,
>> The following program triggers WARNING in exception_type:
>>
>> // autogenerated by syzkaller (http://github.com/google/syzkaller)
>> #include <unistd.h>
>> #include <sys/syscall.h>
>> #include <string.h>
>> #include <stdint.h>
>>
>> long r[31];
>>
>> int main()
>> {
>> memset(r, -1, sizeof(r));
>> r[0] = syscall(SYS_mmap, 0x20000000ul, 0x20000ul, 0x3ul,
>> 0x32ul, 0xfffffffffffffffful, 0x0ul);
>> memcpy((void*)0x20004000, "\x2f\x64\x65\x76\x2f\x6b\x76\x6d", 8);
>> r[2] = syscall(SYS_open, 0x20004000ul, 0x0ul, 0x0ul, 0, 0, 0);
>> r[3] = syscall(SYS_ioctl, r[2], 0xae01ul, 0x0ul, 0, 0, 0);
>> *(uint32_t*)0x2000fff8 = (uint32_t)0x8;
>> *(uint32_t*)0x2000fffc = (uint32_t)0xae84;
>> r[6] = syscall(SYS_ioctl, r[3], 0x4008ae61ul, 0x2000fff8ul, 0, 0, 0);
>> r[7] = syscall(SYS_ioctl, r[3], 0xae41ul, 0x0ul, 0, 0, 0);
>> *(uint8_t*)0x20011e0f = (uint8_t)0x9;
>> *(uint8_t*)0x20011e10 = (uint8_t)0x9d4;
>> *(uint8_t*)0x20011e11 = (uint8_t)0x9;
>> *(uint8_t*)0x20011e12 = (uint8_t)0x8;
>> *(uint32_t*)0x20011e13 = (uint32_t)0x1;
>> *(uint8_t*)0x20011e17 = (uint8_t)0x5;
>> *(uint8_t*)0x20011e18 = (uint8_t)0x482;
>> *(uint8_t*)0x20011e19 = (uint8_t)0x0;
>> *(uint8_t*)0x20011e1a = (uint8_t)0x5;
>> *(uint8_t*)0x20011e1b = (uint8_t)0x6;
>> *(uint8_t*)0x20011e1c = (uint8_t)0x1;
>> *(uint8_t*)0x20011e1d = (uint8_t)0xf382;
>> *(uint8_t*)0x20011e1e = (uint8_t)0x1b5;
>> *(uint32_t*)0x20011e1f = (uint32_t)0x9;
>> *(uint32_t*)0x20011e23 = (uint32_t)0x3;
>> *(uint8_t*)0x20011e27 = (uint8_t)0x1;
>> *(uint8_t*)0x20011e28 = (uint8_t)0x5;
>> *(uint8_t*)0x20011e29 = (uint8_t)0x6;
>> *(uint8_t*)0x20011e2a = (uint8_t)0x0;
>> r[27] = syscall(SYS_ioctl, r[7], 0x4040aea0ul, 0x20011e0ful, 0, 0, 0);
>> memcpy((void*)0x20012f83,
>> "\x29\xac\x42\x56\xbf\x67\x61\x4f\x07\xb8\xde\x10\x83\x05\x7b\x55\x68\x42\xcb\x36\x97\x84\xff\x6a\x69\x10\x05\x63\xb0\x27\xa5\xbf\xe8\x7b\xe2\xe8\x73\x5d\x7a\x1f\x9f\x48\x9a\xc6\xdf\x4e\x6f\xdd\xb2\xbe\x06\x5c\x2c\x3f\xa7\xf7\x6c\xb7\x02\x9e\x7c\x27\x47\x53\xc0\x4f\xe3\xcd\x7e\xe0\xcb\xe2\x57\xbb\x54\x99\xb0\xac\x01\x6a\x99\xd5\x3d\x95\x3f\x78\x07\xa8\xf2\xf1\x57\x1e\x02\x85\x52\xbb\x53\x8e\x63\x45\x86\x23\xf5\xcb\x04\x40\x5b\xe8\x4b\x22\x1e\xbe\xff\x01\xe6\x1c\x95\x15\xb5\x4a\x37\xa7\x4c\xf4\x3e",
>> 125);
>> r[29] = syscall(SYS_ioctl, r[7], 0x4138ae84ul, 0x20012f83ul, 0, 0, 0);
>> r[30] = syscall(SYS_ioctl, r[7], 0xae80ul, 0, 0, 0, 0);
>> return 0;
>> }
>>
>>
>> ------------[ cut here ]------------
>> WARNING: CPU: 1 PID: 10173 at arch/x86/kvm/x86.c:345 exception_type+0x73/0x80()
>> Modules linked in:
>> CPU: 1 PID: 10173 Comm: a.out Tainted: G W 4.4.0-rc8+ #211
>> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
>> 00000000ffffffff ffff880035347a08 ffffffff82907ccd 0000000000000000
>> ffff880033f82f00 ffffffff85ed4540 ffff880035347a48 ffffffff8133f979
>> ffffffff81036893 ffffffff85ed4540 0000000000000159 ffff880034138030
>> Call Trace:
>> [< inline >] __dump_stack lib/dump_stack.c:15
>> [<ffffffff82907ccd>] dump_stack+0x6f/0xa2 lib/dump_stack.c:50
>> [<ffffffff8133f979>] warn_slowpath_common+0xd9/0x140 kernel/panic.c:460
>> [<ffffffff8133fba9>] warn_slowpath_null+0x29/0x30 kernel/panic.c:493
>> [<ffffffff81036893>] exception_type+0x73/0x80 arch/x86/kvm/x86.c:345
>> [< inline >] inject_pending_event arch/x86/kvm/x86.c:5990
>> [< inline >] vcpu_enter_guest arch/x86/kvm/x86.c:6471
>> [< inline >] vcpu_run arch/x86/kvm/x86.c:6660
>> [<ffffffff8106b1c4>] kvm_arch_vcpu_ioctl_run+0x3554/0x5800
>> arch/x86/kvm/x86.c:6818
>> [<ffffffff8101cf61>] kvm_vcpu_ioctl+0x5f1/0xd00
>> arch/x86/kvm/../../../virt/kvm/kvm_main.c:2375
>> [< inline >] vfs_ioctl fs/ioctl.c:43
>> [<ffffffff817b66f1>] do_vfs_ioctl+0x681/0xe40 fs/ioctl.c:607
>> [< inline >] SYSC_ioctl fs/ioctl.c:622
>> [<ffffffff817b6f3f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:613
>> [<ffffffff85e77af6>] entry_SYSCALL_64_fastpath+0x16/0x7a
>> arch/x86/entry/entry_64.S:185
>> ---[ end trace 6d1cb7e02f8364e9 ]---
>>
>>
>> On commit b06f3a168cdcd80026276898fd1fee443ef25743 (Jan 6).
>
> + more kvm people
No need for. It's just that I'm busy and, while I appreciate your
reports, they take a considerable time to process.
Paolo
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: kvm: WARNING in exception_type
2016-01-15 17:29 ` Paolo Bonzini
@ 2016-01-15 18:49 ` Nadav Amit
0 siblings, 0 replies; 4+ messages in thread
From: Nadav Amit @ 2016-01-15 18:49 UTC (permalink / raw)
To: Paolo Bonzini
Cc: Dmitry Vyukov, Gleb Natapov, Thomas Gleixner, Ingo Molnar,
H. Peter Anvin, x86, kvm, LKML, mtosatti, yoshikawa_takuya_b1,
guangrong.xiao, syzkaller, Kostya Serebryany,
Alexander Potapenko, Eric Dumazet, Sasha Levin
Without actual debugging, it appears that kvm_vcpu_ioctl_x86_set_vcpu_events
does not check the events data-structure before copying it to
vcpu->arch.exception and vcpu->arch.interrupt. It therefore does not check
that the exception number is correct (x<31 && x!=2) among other missing
checks.
Regards,
Nadav
Paolo Bonzini <pbonzini@redhat.com> wrote:
>
>
> On 15/01/2016 18:11, Dmitry Vyukov wrote:
>> 2016-01-08 16:42 GMT+01:00 Dmitry Vyukov <dvyukov@google.com>:
>>> Hello,
>>> The following program triggers WARNING in exception_type:
>>>
>>> // autogenerated by syzkaller (http://github.com/google/syzkaller)
>>> #include <unistd.h>
>>> #include <sys/syscall.h>
>>> #include <string.h>
>>> #include <stdint.h>
>>>
>>> long r[31];
>>>
>>> int main()
>>> {
>>> memset(r, -1, sizeof(r));
>>> r[0] = syscall(SYS_mmap, 0x20000000ul, 0x20000ul, 0x3ul,
>>> 0x32ul, 0xfffffffffffffffful, 0x0ul);
>>> memcpy((void*)0x20004000, "\x2f\x64\x65\x76\x2f\x6b\x76\x6d", 8);
>>> r[2] = syscall(SYS_open, 0x20004000ul, 0x0ul, 0x0ul, 0, 0, 0);
>>> r[3] = syscall(SYS_ioctl, r[2], 0xae01ul, 0x0ul, 0, 0, 0);
>>> *(uint32_t*)0x2000fff8 = (uint32_t)0x8;
>>> *(uint32_t*)0x2000fffc = (uint32_t)0xae84;
>>> r[6] = syscall(SYS_ioctl, r[3], 0x4008ae61ul, 0x2000fff8ul, 0, 0, 0);
>>> r[7] = syscall(SYS_ioctl, r[3], 0xae41ul, 0x0ul, 0, 0, 0);
>>> *(uint8_t*)0x20011e0f = (uint8_t)0x9;
>>> *(uint8_t*)0x20011e10 = (uint8_t)0x9d4;
>>> *(uint8_t*)0x20011e11 = (uint8_t)0x9;
>>> *(uint8_t*)0x20011e12 = (uint8_t)0x8;
>>> *(uint32_t*)0x20011e13 = (uint32_t)0x1;
>>> *(uint8_t*)0x20011e17 = (uint8_t)0x5;
>>> *(uint8_t*)0x20011e18 = (uint8_t)0x482;
>>> *(uint8_t*)0x20011e19 = (uint8_t)0x0;
>>> *(uint8_t*)0x20011e1a = (uint8_t)0x5;
>>> *(uint8_t*)0x20011e1b = (uint8_t)0x6;
>>> *(uint8_t*)0x20011e1c = (uint8_t)0x1;
>>> *(uint8_t*)0x20011e1d = (uint8_t)0xf382;
>>> *(uint8_t*)0x20011e1e = (uint8_t)0x1b5;
>>> *(uint32_t*)0x20011e1f = (uint32_t)0x9;
>>> *(uint32_t*)0x20011e23 = (uint32_t)0x3;
>>> *(uint8_t*)0x20011e27 = (uint8_t)0x1;
>>> *(uint8_t*)0x20011e28 = (uint8_t)0x5;
>>> *(uint8_t*)0x20011e29 = (uint8_t)0x6;
>>> *(uint8_t*)0x20011e2a = (uint8_t)0x0;
>>> r[27] = syscall(SYS_ioctl, r[7], 0x4040aea0ul, 0x20011e0ful, 0, 0, 0);
>>> memcpy((void*)0x20012f83,
>>> "\x29\xac\x42\x56\xbf\x67\x61\x4f\x07\xb8\xde\x10\x83\x05\x7b\x55\x68\x42\xcb\x36\x97\x84\xff\x6a\x69\x10\x05\x63\xb0\x27\xa5\xbf\xe8\x7b\xe2\xe8\x73\x5d\x7a\x1f\x9f\x48\x9a\xc6\xdf\x4e\x6f\xdd\xb2\xbe\x06\x5c\x2c\x3f\xa7\xf7\x6c\xb7\x02\x9e\x7c\x27\x47\x53\xc0\x4f\xe3\xcd\x7e\xe0\xcb\xe2\x57\xbb\x54\x99\xb0\xac\x01\x6a\x99\xd5\x3d\x95\x3f\x78\x07\xa8\xf2\xf1\x57\x1e\x02\x85\x52\xbb\x53\x8e\x63\x45\x86\x23\xf5\xcb\x04\x40\x5b\xe8\x4b\x22\x1e\xbe\xff\x01\xe6\x1c\x95\x15\xb5\x4a\x37\xa7\x4c\xf4\x3e",
>>> 125);
>>> r[29] = syscall(SYS_ioctl, r[7], 0x4138ae84ul, 0x20012f83ul, 0, 0, 0);
>>> r[30] = syscall(SYS_ioctl, r[7], 0xae80ul, 0, 0, 0, 0);
>>> return 0;
>>> }
>>>
>>>
>>> ------------[ cut here ]------------
>>> WARNING: CPU: 1 PID: 10173 at arch/x86/kvm/x86.c:345 exception_type+0x73/0x80()
>>> Modules linked in:
>>> CPU: 1 PID: 10173 Comm: a.out Tainted: G W 4.4.0-rc8+ #211
>>> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
>>> 00000000ffffffff ffff880035347a08 ffffffff82907ccd 0000000000000000
>>> ffff880033f82f00 ffffffff85ed4540 ffff880035347a48 ffffffff8133f979
>>> ffffffff81036893 ffffffff85ed4540 0000000000000159 ffff880034138030
>>> Call Trace:
>>> [< inline >] __dump_stack lib/dump_stack.c:15
>>> [<ffffffff82907ccd>] dump_stack+0x6f/0xa2 lib/dump_stack.c:50
>>> [<ffffffff8133f979>] warn_slowpath_common+0xd9/0x140 kernel/panic.c:460
>>> [<ffffffff8133fba9>] warn_slowpath_null+0x29/0x30 kernel/panic.c:493
>>> [<ffffffff81036893>] exception_type+0x73/0x80 arch/x86/kvm/x86.c:345
>>> [< inline >] inject_pending_event arch/x86/kvm/x86.c:5990
>>> [< inline >] vcpu_enter_guest arch/x86/kvm/x86.c:6471
>>> [< inline >] vcpu_run arch/x86/kvm/x86.c:6660
>>> [<ffffffff8106b1c4>] kvm_arch_vcpu_ioctl_run+0x3554/0x5800
>>> arch/x86/kvm/x86.c:6818
>>> [<ffffffff8101cf61>] kvm_vcpu_ioctl+0x5f1/0xd00
>>> arch/x86/kvm/../../../virt/kvm/kvm_main.c:2375
>>> [< inline >] vfs_ioctl fs/ioctl.c:43
>>> [<ffffffff817b66f1>] do_vfs_ioctl+0x681/0xe40 fs/ioctl.c:607
>>> [< inline >] SYSC_ioctl fs/ioctl.c:622
>>> [<ffffffff817b6f3f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:613
>>> [<ffffffff85e77af6>] entry_SYSCALL_64_fastpath+0x16/0x7a
>>> arch/x86/entry/entry_64.S:185
>>> ---[ end trace 6d1cb7e02f8364e9 ]---
>>>
>>>
>>> On commit b06f3a168cdcd80026276898fd1fee443ef25743 (Jan 6).
>>
>> + more kvm people
>
> No need for. It's just that I'm busy and, while I appreciate your
> reports, they take a considerable time to process.
>
> Paolo
> --
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^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-01-15 18:49 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2016-01-08 15:42 kvm: WARNING in exception_type Dmitry Vyukov
2016-01-15 17:11 ` Dmitry Vyukov
2016-01-15 17:29 ` Paolo Bonzini
2016-01-15 18:49 ` Nadav Amit
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