* [Bug 209845] New: ignore_msrs kernel NULL pointer dereference since 12bc2132b15e0a969b3f455d90a5f215ef239eff
@ 2020-10-25 11:28 bugzilla-daemon
2020-10-25 16:24 ` Peter Xu
2020-10-25 16:24 ` [Bug 209845] " bugzilla-daemon
0 siblings, 2 replies; 3+ messages in thread
From: bugzilla-daemon @ 2020-10-25 11:28 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=209845
Bug ID: 209845
Summary: ignore_msrs kernel NULL pointer dereference since
12bc2132b15e0a969b3f455d90a5f215ef239eff
Product: Virtualization
Version: unspecified
Kernel Version: 5.9
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: kvm
Assignee: virtualization_kvm@kernel-bugs.osdl.org
Reporter: kernel-bugs@steffen.cc
Regression: No
Created attachment 293183
--> https://bugzilla.kernel.org/attachment.cgi?id=293183&action=edit
dmesg section
Since commit 12bc2132b15e0a969b3f455d90a5f215ef239eff kvm crashes with a null
pointer dereference when ignore_msrs is set (log in attachement)
Hardware: AMD Ryzen 3700x
other reports:
-
https://www.reddit.com/r/VFIO/comments/jdh9pp/so_i_just_updated_to_kernel_591_and/
- https://forum.manjaro.org/t/kernel-5-9-no-virtualization/31562
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [Bug 209845] New: ignore_msrs kernel NULL pointer dereference since 12bc2132b15e0a969b3f455d90a5f215ef239eff
2020-10-25 11:28 [Bug 209845] New: ignore_msrs kernel NULL pointer dereference since 12bc2132b15e0a969b3f455d90a5f215ef239eff bugzilla-daemon
@ 2020-10-25 16:24 ` Peter Xu
2020-10-25 16:24 ` [Bug 209845] " bugzilla-daemon
1 sibling, 0 replies; 3+ messages in thread
From: Peter Xu @ 2020-10-25 16:24 UTC (permalink / raw)
To: bugzilla-daemon; +Cc: kvm
On Sun, Oct 25, 2020 at 11:28:21AM +0000, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=209845
>
> Bug ID: 209845
> Summary: ignore_msrs kernel NULL pointer dereference since
> 12bc2132b15e0a969b3f455d90a5f215ef239eff
> Product: Virtualization
> Version: unspecified
> Kernel Version: 5.9
> Hardware: x86-64
> OS: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: kvm
> Assignee: virtualization_kvm@kernel-bugs.osdl.org
> Reporter: kernel-bugs@steffen.cc
> Regression: No
>
> Created attachment 293183
> --> https://bugzilla.kernel.org/attachment.cgi?id=293183&action=edit
> dmesg section
>
> Since commit 12bc2132b15e0a969b3f455d90a5f215ef239eff kvm crashes with a null
> pointer dereference when ignore_msrs is set (log in attachement)
>
> Hardware: AMD Ryzen 3700x
kvm_msr_ignored_check() should consider vcpu null case for kvm vm get msr
features.. I'll post a fix soon, probably with a selftest too. Thanks,
--
Peter Xu
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug 209845] ignore_msrs kernel NULL pointer dereference since 12bc2132b15e0a969b3f455d90a5f215ef239eff
2020-10-25 11:28 [Bug 209845] New: ignore_msrs kernel NULL pointer dereference since 12bc2132b15e0a969b3f455d90a5f215ef239eff bugzilla-daemon
2020-10-25 16:24 ` Peter Xu
@ 2020-10-25 16:24 ` bugzilla-daemon
1 sibling, 0 replies; 3+ messages in thread
From: bugzilla-daemon @ 2020-10-25 16:24 UTC (permalink / raw)
To: kvm
https://bugzilla.kernel.org/show_bug.cgi?id=209845
--- Comment #1 from peterx@redhat.com ---
On Sun, Oct 25, 2020 at 11:28:21AM +0000, bugzilla-daemon@bugzilla.kernel.org
wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=209845
>
> Bug ID: 209845
> Summary: ignore_msrs kernel NULL pointer dereference since
> 12bc2132b15e0a969b3f455d90a5f215ef239eff
> Product: Virtualization
> Version: unspecified
> Kernel Version: 5.9
> Hardware: x86-64
> OS: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: kvm
> Assignee: virtualization_kvm@kernel-bugs.osdl.org
> Reporter: kernel-bugs@steffen.cc
> Regression: No
>
> Created attachment 293183
> --> https://bugzilla.kernel.org/attachment.cgi?id=293183&action=edit
> dmesg section
>
> Since commit 12bc2132b15e0a969b3f455d90a5f215ef239eff kvm crashes with a null
> pointer dereference when ignore_msrs is set (log in attachement)
>
> Hardware: AMD Ryzen 3700x
kvm_msr_ignored_check() should consider vcpu null case for kvm vm get msr
features.. I'll post a fix soon, probably with a selftest too. Thanks,
--
You are receiving this mail because:
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-10-25 11:28 [Bug 209845] New: ignore_msrs kernel NULL pointer dereference since 12bc2132b15e0a969b3f455d90a5f215ef239eff bugzilla-daemon
2020-10-25 16:24 ` Peter Xu
2020-10-25 16:24 ` [Bug 209845] " bugzilla-daemon
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