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[Qemu-devel] [PATCHv3 5/5] softmmu-semi: fix lock_user* functions not to
From: |
Jim Meyering |
Subject: |
[Qemu-devel] [PATCHv3 5/5] softmmu-semi: fix lock_user* functions not to deref NULL upon OOM |
Date: |
Wed, 22 Aug 2012 13:55:56 +0200 |
From: Jim Meyering <address@hidden>
Return NULL upon malloc failure.
Signed-off-by: Jim Meyering <address@hidden>
---
softmmu-semi.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/softmmu-semi.h b/softmmu-semi.h
index 648cb95..bcb979a 100644
--- a/softmmu-semi.h
+++ b/softmmu-semi.h
@@ -40,7 +40,7 @@ static void *softmmu_lock_user(CPUArchState *env, uint32_t
addr, uint32_t len,
uint8_t *p;
/* TODO: Make this something that isn't fixed size. */
p = malloc(len);
- if (copy)
+ if (p && copy)
cpu_memory_rw_debug(env, addr, p, len, 0);
return p;
}
@@ -52,6 +52,9 @@ static char *softmmu_lock_user_string(CPUArchState *env,
uint32_t addr)
uint8_t c;
/* TODO: Make this something that isn't fixed size. */
s = p = malloc(1024);
+ if (!s) {
+ return NULL;
+ }
do {
cpu_memory_rw_debug(env, addr, &c, 1, 0);
addr++;
--
1.7.12