From a780dea0454d2820e31407c33f167acf00fe447d Mon Sep 17 00:00:00 2001 From: Liu Yuan Date: Thu, 28 Aug 2014 18:27:55 +0800 Subject: sheepdog: fix a core dump while do auto-reconnecting MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We should reinit local_err as NULL inside the while loop or g_free() will report corrupption and abort the QEMU when sheepdog driver tries reconnecting. This was broken in commit 356b4ca. qemu-system-x86_64: failed to get the header, Resource temporarily unavailable qemu-system-x86_64: Failed to connect to socket: Connection refused qemu-system-x86_64: (null) [xcb] Unknown sequence number while awaiting reply [xcb] Most likely this is a multi-threaded client and XInitThreads has not been called [xcb] Aborting, sorry about that. qemu-system-x86_64: ../../src/xcb_io.c:298: poll_for_response: Assertion `!xcb_xlib_threads_sequence_lost' failed. Aborted (core dumped) Cc: qemu-devel@nongnu.org Cc: Markus Armbruster Cc: Kevin Wolf Cc: Stefan Hajnoczi Reviewed-by: Markus Armbruster Signed-off-by: Liu Yuan Reviewed-by: Benoît Canet Signed-off-by: Stefan Hajnoczi --- block/sheepdog.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'block/sheepdog.c') diff --git a/block/sheepdog.c b/block/sheepdog.c index 49a9a9e5eb..f91afc3a5b 100644 --- a/block/sheepdog.c +++ b/block/sheepdog.c @@ -716,7 +716,6 @@ static void coroutine_fn send_pending_req(BDRVSheepdogState *s, uint64_t oid) static coroutine_fn void reconnect_to_sdog(void *opaque) { - Error *local_err = NULL; BDRVSheepdogState *s = opaque; AIOReq *aio_req, *next; @@ -731,6 +730,7 @@ static coroutine_fn void reconnect_to_sdog(void *opaque) /* Try to reconnect the sheepdog server every one second. */ while (s->fd < 0) { + Error *local_err = NULL; s->fd = get_sheep_fd(s, &local_err); if (s->fd < 0) { DPRINTF("Wait for connection to be established\n"); -- cgit v1.2.3