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Clarify limitations of the --syscall flag with enable-event command
[lttng-tools.git]
/
src
/
common
/
compat
/
compat-epoll.c
diff --git
a/src/common/compat/compat-epoll.c
b/src/common/compat/compat-epoll.c
index 1380ce85527a74dae304b2777de5a72c489b6b5c..ecd09a0924a43f3aef6dbcd0fdb2055a45d44bb9 100644
(file)
--- a/
src/common/compat/compat-epoll.c
+++ b/
src/common/compat/compat-epoll.c
@@
-51,6
+51,11
@@
static int resize_poll_event(struct lttng_poll_event *events,
PERROR("realloc epoll add");
goto error;
}
PERROR("realloc epoll add");
goto error;
}
+ if (new_size > events->alloc_size) {
+ /* Zero newly allocated memory */
+ memset(ptr + events->alloc_size, 0,
+ (new_size - events->alloc_size) * sizeof(*ptr));
+ }
events->events = ptr;
events->alloc_size = new_size;
events->events = ptr;
events->alloc_size = new_size;
@@
-119,6
+124,11
@@
int compat_epoll_add(struct lttng_poll_event *events, int fd, uint32_t req_event
goto error;
}
goto error;
}
+ /*
+ * Zero struct epoll_event to ensure all representations of its
+ * union are zeroed.
+ */
+ memset(&ev, 0, sizeof(ev));
ev.events = req_events;
ev.data.fd = fd;
ev.events = req_events;
ev.data.fd = fd;
@@
-250,7
+260,7
@@
error:
void compat_epoll_set_max_size(void)
{
int ret, fd;
void compat_epoll_set_max_size(void)
{
int ret, fd;
- size_t size_ret;
+ s
s
ize_t size_ret;
char buf[64];
poll_max_size = DEFAULT_POLL_SIZE;
char buf[64];
poll_max_size = DEFAULT_POLL_SIZE;
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