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Re: [Qemu-devel] [PATCH] sheepdog: fix a core dump while do auto-reconne
From: |
Markus Armbruster |
Subject: |
Re: [Qemu-devel] [PATCH] sheepdog: fix a core dump while do auto-reconnecting |
Date: |
Thu, 28 Aug 2014 12:00:09 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) |
Liu Yuan <address@hidden> writes:
> We should reinit Local_err as NULL inside the while loop or g_free() will
> report
You misspelled local_err.
> corrupption and abort the QEMU when sheepdog driver tries reconnecting.
>
> 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)
Broken in commit 356b4ca. Suggest to add that to the commit message.
> Cc: address@hidden
> Cc: Markus Armbruster <address@hidden>
> Cc: Kevin Wolf <address@hidden>
> Cc: Stefan Hajnoczi <address@hidden>
> Signed-off-by: Liu Yuan <address@hidden>
> ---
> block/sheepdog.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/block/sheepdog.c b/block/sheepdog.c
> index 3af8743..a3a19b1 100644
> --- a/block/sheepdog.c
> +++ b/block/sheepdog.c
> @@ -712,7 +712,6 @@ 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;
> BlockDriverState *bs = s->bs;
> @@ -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");
Thanks for fixing the mess I made.
Reviewed-by: Markus Armbruster <address@hidden>