4.9-stable patches

added patches:
	kvm-x86-degrade-warn-to-pr_warn_ratelimited.patch

diff --git a/queue-4.9/kvm-x86-degrade-warn-to-pr_warn_ratelimited.patch b/queue-4.9/kvm-x86-degrade-warn-to-pr_warn_ratelimited.patch
new file mode 100644 (file)
index 0000000..0f9ab76
--- /dev/null
+++ b/queue-4.9/kvm-x86-degrade-warn-to-pr_warn_ratelimited.patch
@@ -0,0 +1,44 @@
+From 3f16a5c318392cbb5a0c7a3d19dff8c8ef3c38ee Mon Sep 17 00:00:00 2001
+From: Paolo Bonzini <pbonzini@redhat.com>
+Date: Wed, 26 Jun 2019 14:16:13 +0200
+Subject: KVM: x86: degrade WARN to pr_warn_ratelimited
+
+From: Paolo Bonzini <pbonzini@redhat.com>
+
+commit 3f16a5c318392cbb5a0c7a3d19dff8c8ef3c38ee upstream.
+
+This warning can be triggered easily by userspace, so it should certainly not
+cause a panic if panic_on_warn is set.
+
+Reported-by: syzbot+c03f30b4f4c46bdf8575@syzkaller.appspotmail.com
+Suggested-by: Alexander Potapenko <glider@google.com>
+Acked-by: Alexander Potapenko <glider@google.com>
+Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ arch/x86/kvm/x86.c |    6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -1365,7 +1365,7 @@ static int set_tsc_khz(struct kvm_vcpu *
+                       vcpu->arch.tsc_always_catchup = 1;
+                       return 0;
+               } else {
+-                      WARN(1, "user requested TSC rate below hardware speed\n");
++                      pr_warn_ratelimited("user requested TSC rate below hardware speed\n");
+                       return -1;
+               }
+       }
+@@ -1375,8 +1375,8 @@ static int set_tsc_khz(struct kvm_vcpu *
+                               user_tsc_khz, tsc_khz);
+ 
+       if (ratio == 0 || ratio >= kvm_max_tsc_scaling_ratio) {
+-              WARN_ONCE(1, "Invalid TSC scaling ratio - virtual-tsc-khz=%u\n",
+-                        user_tsc_khz);
++              pr_warn_ratelimited("Invalid TSC scaling ratio - virtual-tsc-khz=%u\n",
++                                  user_tsc_khz);
+               return -1;
+       }
+ 

diff --git a/queue-4.9/series b/queue-4.9/series
index 9d6da1c891537c7d74d6b56167fed734a519d3ef..51bd3e8fe07729b31ba4a1ec379cad9627ff4bee 100644 (file)
--- a/queue-4.9/series
+++ b/queue-4.9/series
@@ -80,6 +80,7 @@ arc-fix-allnoconfig-build-warning.patch
 bug.h-work-around-gcc-pr82365-in-bug.patch
 arc-handle-gcc-generated-__builtin_trap-for-older-compiler.patch
 clk-sunxi-fix-uninitialized-access.patch
+kvm-x86-degrade-warn-to-pr_warn_ratelimited.patch
 drm-i915-dmc-protect-against-reading-random-memory.patch
 mips-workaround-gcc-__builtin_unreachable-reordering.patch
 ptrace-fix-ptracer_cred-handling-for-ptrace_traceme.patch