From: Zenghui Yu <yuzenghui@huawei.com>
To: Sasha Levin <sashal@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
<linux-kernel@vger.kernel.org>, <stable@vger.kernel.org>,
Haimin Zhang <tcs_kernel@tencent.com>,
TCS Robot <tcs_robot@tencent.com>, <tglx@linutronix.de>,
<mingo@redhat.com>, <bp@alien8.de>, <x86@kernel.org>,
<kvm@vger.kernel.org>
Subject: Re: [PATCH MANUALSEL 4.19 1/2] KVM: x86: Handle SRCU initialization failure during page track init
Date: Wed, 29 May 2024 16:29:32 +0800 [thread overview]
Message-ID: <9acccdfe-b7d8-b59d-7b00-d5a266b84d36@huawei.com> (raw)
In-Reply-To: <0fd9f7e5-697f-6ad0-b1e3-40bd48a8efae@redhat.com>
On 2021/10/6 19:23, Paolo Bonzini wrote:
> On 06/10/21 13:12, Sasha Levin wrote:
> > From: Haimin Zhang <tcs_kernel@tencent.com>
> >
> > [ Upstream commit eb7511bf9182292ef1df1082d23039e856d1ddfb ]
> >
> > Check the return of init_srcu_struct(), which can fail due to OOM, when
> > initializing the page track mechanism. Lack of checking leads to a NULL
> > pointer deref found by a modified syzkaller.
> >
> > Reported-by: TCS Robot <tcs_robot@tencent.com>
> > Signed-off-by: Haimin Zhang <tcs_kernel@tencent.com>
> > Message-Id: <1630636626-12262-1-git-send-email-tcs_kernel@tencent.com>
> > [Move the call towards the beginning of kvm_arch_init_vm. - Paolo]
> > Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> > Signed-off-by: Sasha Levin <sashal@kernel.org>
>
> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Sasha, will this patch be applied for 4.19?
The same question for the 5.4 backport [*]. It looks like both of them
are missed for unknown reasons.
[*] https://lore.kernel.org/stable/20211006111250.264294-1-sashal@kernel.org
next prev parent reply other threads:[~2024-05-29 8:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-06 11:12 Sasha Levin
2021-10-06 11:12 ` [PATCH MANUALSEL 4.19 2/2] ALSA: pcsp: Make hrtimer forwarding more robust Sasha Levin
2021-10-06 11:23 ` [PATCH MANUALSEL 4.19 1/2] KVM: x86: Handle SRCU initialization failure during page track init Paolo Bonzini
2024-05-29 8:29 ` Zenghui Yu [this message]
2024-06-12 12:38 ` Greg KH
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