Update to 4.19.7

debian/changelog

@@ -1,7 +1,8 @@
-linux (4.19.6-1~exp1) UNRELEASED; urgency=medium
+linux (4.19.7-1~exp1) UNRELEASED; urgency=medium
 
   * New upstream stable update:
     https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.6
+    https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.7
 
   [ Marcin Juszkiewicz ]
   * [arm64] Enable ACPI IMPI

debian/patches/bugfix/x86/KVM-LAPIC-Fix-pv-ipis-use-before-initialization.patch

@@ -1,65 +0,0 @@
-From: Wanpeng Li <kernellwp@gmail.com>
-Date: Tue, 20 Nov 2018 09:39:30 +0800
-Subject: KVM: LAPIC: Fix pv ipis use-before-initialization
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-Origin: https://git.kernel.org/linus/38ab012f109caf10f471db1adf284e620dd8d701
-Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2018-19406
-
-Reported by syzkaller:
-
- BUG: unable to handle kernel NULL pointer dereference at 0000000000000014
- PGD 800000040410c067 P4D 800000040410c067 PUD 40410d067 PMD 0
- Oops: 0000 [#1] PREEMPT SMP PTI
- CPU: 3 PID: 2567 Comm: poc Tainted: G           OE     4.19.0-rc5 #16
- RIP: 0010:kvm_pv_send_ipi+0x94/0x350 [kvm]
- Call Trace:
-  kvm_emulate_hypercall+0x3cc/0x700 [kvm]
-  handle_vmcall+0xe/0x10 [kvm_intel]
-  vmx_handle_exit+0xc1/0x11b0 [kvm_intel]
-  vcpu_enter_guest+0x9fb/0x1910 [kvm]
-  kvm_arch_vcpu_ioctl_run+0x35c/0x610 [kvm]
-  kvm_vcpu_ioctl+0x3e9/0x6d0 [kvm]
-  do_vfs_ioctl+0xa5/0x690
-  ksys_ioctl+0x6d/0x80
-  __x64_sys_ioctl+0x1a/0x20
-  do_syscall_64+0x83/0x6e0
-  entry_SYSCALL_64_after_hwframe+0x49/0xbe
-
-The reason is that the apic map has not yet been initialized, the testcase
-triggers pv_send_ipi interface by vmcall which results in kvm->arch.apic_map
-is dereferenced. This patch fixes it by checking whether or not apic map is
-NULL and bailing out immediately if that is the case.
-
-Fixes: 4180bf1b65 (KVM: X86: Implement "send IPI" hypercall)
-Reported-by: Wei Wu <ww9210@gmail.com>
-Cc: Paolo Bonzini <pbonzini@redhat.com>
-Cc: Radim Krčmář <rkrcmar@redhat.com>
-Cc: Wei Wu <ww9210@gmail.com>
-Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
-Cc: stable@vger.kernel.org
-Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
----
- arch/x86/kvm/lapic.c | 5 +++++
- 1 file changed, 5 insertions(+)
-
-diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
-index 89db20f8cb70..02f2291dcf7e 100644
---- a/arch/x86/kvm/lapic.c
-+++ b/arch/x86/kvm/lapic.c
-@@ -576,6 +576,11 @@ int kvm_pv_send_ipi(struct kvm *kvm, unsigned long ipi_bitmap_low,
- 	rcu_read_lock();
- 	map = rcu_dereference(kvm->arch.apic_map);
- 
-+	if (unlikely(!map)) {
-+		count = -EOPNOTSUPP;
-+		goto out;
-+	}
-+
- 	if (min > map->max_apic_id)
- 		goto out;
- 	/* Bits above cluster_size are masked in the caller.  */
--- 
-2.11.0
-

debian/patches/series

@@ -130,7 +130,6 @@ features/all/lockdown/arm64-add-kernel-config-option-to-lock-down-when.patch
 
 # Security fixes
 debian/i386-686-pae-pci-set-pci-nobios-by-default.patch
-bugfix/x86/KVM-LAPIC-Fix-pv-ipis-use-before-initialization.patch
 
 # Fix exported symbol versions
 bugfix/all/module-disable-matching-missing-version-crc.patch