Patchwork [07/25] aio: test node->deleted before calling io_flush

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Submitter Paolo Bonzini
Date Oct. 26, 2012, 2:05 p.m.
Message ID <1351260355-19802-8-git-send-email-pbonzini@redhat.com>
Download mbox | patch
Permalink /patch/194485/
State New
Headers show

Comments

Paolo Bonzini - Oct. 26, 2012, 2:05 p.m.
Otherwise, there could be a case where io_flush accesses freed
memory because it should not have been called.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 aio.c | 2 +-
 1 file modificato, 1 inserzione(+). 1 rimozione(-)

Patch

diff --git a/aio.c b/aio.c
index c89f1e9..734d2cf 100644
--- a/aio.c
+++ b/aio.c
@@ -122,7 +122,7 @@  bool aio_wait(AioContext *ctx)
          * Otherwise, if there are no AIO requests, qemu_aio_wait() would
          * wait indefinitely.
          */
-        if (node->io_flush) {
+        if (!node->deleted && node->io_flush) {
             if (node->io_flush(node->opaque) == 0) {
                 continue;
             }