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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

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Pull KVM fixes from Paolo Bonzini:

 - fix for module unload vs deferred jump labels (note: there might be
   other buggy modules!)

 - two NULL pointer dereferences from syzkaller

 - also syzkaller: fix emulation of fxsave/fxrstor/sgdt/sidt, problem
   made worse during this merge window, "just" kernel memory leak on
   releases

 - fix emulation of "mov ss" - somewhat serious on AMD, less so on Intel

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: fix emulation of "MOV SS, null selector"
  KVM: x86: fix NULL deref in vcpu_scan_ioapic
  KVM: eventfd: fix NULL deref irqbypass consumer
  KVM: x86: Introduce segmented_write_std
  KVM: x86: flush pending lapic jump label updates on module unload
  jump_labels: API for flushing deferred jump label updates
This commit is contained in:
Linus Torvalds
2017-01-13 17:06:24 -08:00
parent a65c92597d 33ab91103b
commit 406732c932
7 changed files with 80 additions and 16 deletions
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5
include/linux/jump_label_ratelimit.h
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@@ -14,6 +14,7 @@ struct static_key_deferred {
#ifdef HAVE_JUMP_LABEL
extern void static_key_slow_dec_deferred(struct static_key_deferred *key);
extern void static_key_deferred_flush(struct static_key_deferred *key);
extern void
jump_label_rate_limit(struct static_key_deferred *key, unsigned long rl);
@@ -26,6 +27,10 @@ static inline void static_key_slow_dec_deferred(struct static_key_deferred *key)
STATIC_KEY_CHECK_USE();
static_key_slow_dec(&key->key);
}
static inline void static_key_deferred_flush(struct static_key_deferred *key)
{
STATIC_KEY_CHECK_USE();
}
static inline void
jump_label_rate_limit(struct static_key_deferred *key,
unsigned long rl)