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Haimin ZhangandGreg Kroah-Hartman deb2949417 KVM: x86: Handle SRCU initialization failure during page track init

commit eb7511bf91 upstream.

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2021-10-06 15:56:04 +02:00

alpha

alpha: Declare virt_to_phys and virt_to_bus parameter as pointer to volatile

2021-09-30 10:11:07 +02:00

arc

ARC: export clear_user_page() for modules

2021-09-22 12:28:04 +02:00

arm

ARM: 9098/1: ftrace: MODULE_PLT: Fix build problem without DYNAMIC_FTRACE

2021-09-26 14:08:56 +02:00

arm64

arm64: Mark __stack_chk_guard as __ro_after_init