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authorLinus Torvalds <torvalds@linux-foundation.org>2013-01-18 12:02:52 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-01-18 12:02:52 -0800
commit5c69bed266adadf9fd334e68a7ac586b625e9547 (patch)
tree54cb73524cf5ed886cd176665cf30a320014d8ac /arch/x86
parentb814469ad515c70d9269d5268607bd6fbfb32533 (diff)
parent9174adbee4a9a49d0139f5d71969852b36720809 (diff)
Merge tag 'stable/for-linus-3.8-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull Xen fixes from Konrad Rzeszutek Wilk: - CVE-2013-0190/XSA-40 (or stack corruption for 32-bit PV kernels) - Fix racy vma access spotted by Al Viro - Fix mmap batch ioctl potentially resulting in large O(n) page allcations. - Fix vcpu online/offline BUG:scheduling while atomic.. - Fix unbound buffer scanning for more than 32 vCPUs. - Fix grant table being incorrectly initialized - Fix incorrect check in pciback - Allow privcmd in backend domains. Fix up whitespace conflict due to ugly merge resolution in Xen tree in arch/arm/xen/enlighten.c * tag 'stable/for-linus-3.8-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: Fix stack corruption in xen_failsafe_callback for 32bit PVOPS guests. Revert "xen/smp: Fix CPU online/offline bug triggering a BUG: scheduling while atomic." xen/gntdev: remove erronous use of copy_to_user xen/gntdev: correctly unmap unlinked maps in mmu notifier xen/gntdev: fix unsafe vma access xen/privcmd: Fix mmap batch ioctl. Xen: properly bound buffer access when parsing cpu/*/availability xen/grant-table: correctly initialize grant table version 1 x86/xen : Fix the wrong check in pciback xen/privcmd: Relax access control in privcmd_ioctl_mmap
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/entry_32.S1
-rw-r--r--arch/x86/xen/smp.c7
2 files changed, 0 insertions, 8 deletions
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index ff84d5469d7..6ed91d9980e 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -1065,7 +1065,6 @@ ENTRY(xen_failsafe_callback)
lea 16(%esp),%esp
CFI_ADJUST_CFA_OFFSET -16
jz 5f
- addl $16,%esp
jmp iret_exc
5: pushl_cfi $-1 /* orig_ax = -1 => not a system call */
SAVE_ALL
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 4f7d2599b48..34bc4cee888 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -432,13 +432,6 @@ static void __cpuinit xen_play_dead(void) /* used only with HOTPLUG_CPU */
play_dead_common();
HYPERVISOR_vcpu_op(VCPUOP_down, smp_processor_id(), NULL);
cpu_bringup();
- /*
- * Balance out the preempt calls - as we are running in cpu_idle
- * loop which has been called at bootup from cpu_bringup_and_idle.
- * The cpucpu_bringup_and_idle called cpu_bringup which made a
- * preempt_disable() So this preempt_enable will balance it out.
- */
- preempt_enable();
}
#else /* !CONFIG_HOTPLUG_CPU */