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| author | Maciej S. Szmigiero <maciej.szmigiero@oracle.com> | 2021-12-06 20:54:26 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-12-08 04:24:31 -0500 |
| commit | 1e8617d37fc36407f9fce9c08ef8d254613c00de (patch) | |
| tree | 80c0cbcc57bc7b25f49cf027ce2477196d66b49c | |
| parent | c928bfc2632fa3dd6a3bd4504ac6d8e42302287a (diff) | |
| download | linux-stable-1e8617d37fc36407f9fce9c08ef8d254613c00de.tar.gz linux-stable-1e8617d37fc36407f9fce9c08ef8d254613c00de.tar.bz2 linux-stable-1e8617d37fc36407f9fce9c08ef8d254613c00de.zip | |
KVM: Move WARN on invalid memslot index to update_memslots()
Since kvm_memslot_move_forward() can theoretically return a negative
memslot index even when kvm_memslot_move_backward() returned a positive one
(and so did not WARN) let's just move the warning to the common code.
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <eeed890ccb951e7b0dce15bc170eb2661d5b02da.1638817640.git.maciej.szmigiero@oracle.com>
| -rw-r--r-- | virt/kvm/kvm_main.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 6ca076ae64a2..a60d09beef61 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1322,8 +1322,7 @@ static inline int kvm_memslot_move_backward(struct kvm_memslots *slots, struct kvm_memory_slot *mslots = slots->memslots; int i; - if (WARN_ON_ONCE(slots->id_to_index[memslot->id] == -1) || - WARN_ON_ONCE(!slots->used_slots)) + if (slots->id_to_index[memslot->id] == -1 || !slots->used_slots) return -1; /* @@ -1427,6 +1426,9 @@ static void update_memslots(struct kvm_memslots *slots, i = kvm_memslot_move_backward(slots, memslot); i = kvm_memslot_move_forward(slots, memslot, i); + if (WARN_ON_ONCE(i < 0)) + return; + /* * Copy the memslot to its new position in memslots and update * its index accordingly. |