From: Liu Yuan <[email protected]> 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: [email protected] Cc: Markus Armbruster <[email protected]> Cc: Kevin Wolf <[email protected]> Cc: Stefan Hajnoczi <[email protected]> Reviewed-by: Markus Armbruster <[email protected]> Signed-off-by: Liu Yuan <[email protected]> Reviewed-by: Benoît Canet <[email protected]> Signed-off-by: Stefan Hajnoczi <[email protected]> --- block/sheepdog.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/sheepdog.c b/block/sheepdog.c index 49a9a9e..f91afc3 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"); -- 1.9.3
