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