[lttng-dev] [PATCH lttng-tools v2] Fix: Don't dispatch uninitialized hash tables to the ht_cleanup thread

[David Goulet]

Merged!

On 11 Nov (15:30:08), Jérémie Galarneau wrote:
> Some error-handling code paths may call ht_cleanup_push() with NULL hash
> tables which will crash the clean-up thread.
> 
> Signed-off-by: Jérémie Galarneau <jeremie.galarneau at efficios.com>
> ---
>  src/bin/lttng-sessiond/utils.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/src/bin/lttng-sessiond/utils.c b/src/bin/lttng-sessiond/utils.c
> index 2ff57cd..c9c51ed 100644
> --- a/src/bin/lttng-sessiond/utils.c
> +++ b/src/bin/lttng-sessiond/utils.c
> @@ -52,6 +52,9 @@ void ht_cleanup_push(struct lttng_ht *ht)
>  	ssize_t ret;
>  	int fd = ht_cleanup_pipe[1];
>  
> +	if (!ht) {
> +		return;
> +	}
>  	if (fd < 0)
>  		return;
>  	ret = lttng_write(fd, &ht, sizeof(ht));
> -- 
> 1.8.4.2
> 
> 
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> lttng-dev at lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
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