| Message ID | 1575517528-44312-2-git-send-email-pannengyuan@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | block/nbd: fix memory leak in nbd_open | expand |
Hi Pan, On Thu, Dec 05, 2019 at 11:45:27AM +0800, pannengyuan@huawei.com wrote: > From: Pan Nengyuan <pannengyuan@huawei.com> > > The BDRVNBDState cleanup code is common in two places, add > nbd_clear_bdrvstate() function to do these cleanups. > > Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> I only suggested this change, so I think is better to change it in: Suggested-by: Stefano Garzarella <sgarzare@redhat.com> Thanks, Stefano > Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com> > Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> > --- > v3: > - new patch, split form 2/2 patch (suggested by Stefano Garzarella) > Changes v4 to v3: > - replace function name from nbd_free_bdrvstate_prop to > nbd_clear_bdrvstate and set cleared fields to NULL (suggested by Eric > Blake) > - remove static function prototype. (suggested by Eric Blake) > --- > Changes v5 to v4: > - correct the wrong email address > --- > block/nbd.c | 25 +++++++++++++++---------- > 1 file changed, 15 insertions(+), 10 deletions(-) > > diff --git a/block/nbd.c b/block/nbd.c > index 1239761..8b4a65a 100644 > --- a/block/nbd.c > +++ b/block/nbd.c > @@ -94,6 +94,19 @@ typedef struct BDRVNBDState { > > static int nbd_client_connect(BlockDriverState *bs, Error **errp); > > +void nbd_clear_bdrvstate(BDRVNBDState *s) > +{ > + object_unref(OBJECT(s->tlscreds)); > + qapi_free_SocketAddress(s->saddr); > + s->saddr = NULL; > + g_free(s->export); > + s->export = NULL; > + g_free(s->tlscredsid); > + s->tlscredsid = NULL; > + g_free(s->x_dirty_bitmap); > + s->x_dirty_bitmap = NULL; > +} > + > static void nbd_channel_error(BDRVNBDState *s, int ret) > { > if (ret == -EIO) { > @@ -1855,10 +1868,7 @@ static int nbd_process_options(BlockDriverState *bs, QDict *options, > > error: > if (ret < 0) { > - object_unref(OBJECT(s->tlscreds)); > - qapi_free_SocketAddress(s->saddr); > - g_free(s->export); > - g_free(s->tlscredsid); > + nbd_clear_bdrvstate(s); > } > qemu_opts_del(opts); > return ret; > @@ -1937,12 +1947,7 @@ static void nbd_close(BlockDriverState *bs) > BDRVNBDState *s = bs->opaque; > > nbd_client_close(bs); > - > - object_unref(OBJECT(s->tlscreds)); > - qapi_free_SocketAddress(s->saddr); > - g_free(s->export); > - g_free(s->tlscredsid); > - g_free(s->x_dirty_bitmap); > + nbd_clear_bdrvstate(s); > } > > static int64_t nbd_getlength(BlockDriverState *bs) > -- > 2.7.2.windows.1 > > --
On 12/5/19 3:42 AM, Stefano Garzarella wrote: > Hi Pan, > > On Thu, Dec 05, 2019 at 11:45:27AM +0800, pannengyuan@huawei.com wrote: >> From: Pan Nengyuan <pannengyuan@huawei.com> >> >> The BDRVNBDState cleanup code is common in two places, add >> nbd_clear_bdrvstate() function to do these cleanups. >> >> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> > > I only suggested this change, so I think is better to change it in: > Suggested-by: Stefano Garzarella <sgarzare@redhat.com> Concur. I'll make that change while queuing this series through my NBD tree for 5.0. Reviewed-by: Eric Blake <eblake@redhat.com>
On 05.12.19 15:04, Eric Blake wrote: > On 12/5/19 3:42 AM, Stefano Garzarella wrote: >> Hi Pan, >> >> On Thu, Dec 05, 2019 at 11:45:27AM +0800, pannengyuan@huawei.com wrote: >>> From: Pan Nengyuan <pannengyuan@huawei.com> >>> >>> The BDRVNBDState cleanup code is common in two places, add >>> nbd_clear_bdrvstate() function to do these cleanups. >>> >>> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> >> >> I only suggested this change, so I think is better to change it in: >> Suggested-by: Stefano Garzarella <sgarzare@redhat.com> > > Concur. I'll make that change while queuing this series through my NBD > tree for 5.0. Ping on that O:) (Just going through mails in my inbox) Max
On 12/4/19 9:45 PM, pannengyuan@huawei.com wrote: > From: Pan Nengyuan <pannengyuan@huawei.com> > > The BDRVNBDState cleanup code is common in two places, add > nbd_clear_bdrvstate() function to do these cleanups. > > Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> > Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com> > Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> > --- > +++ b/block/nbd.c > @@ -94,6 +94,19 @@ typedef struct BDRVNBDState { > > static int nbd_client_connect(BlockDriverState *bs, Error **errp); > > +void nbd_clear_bdrvstate(BDRVNBDState *s) > +{ Compilation fails if this is not static (no prior prototype). I've fixed that and now queued this series in my NBD tree, pull request coming soon.
diff --git a/block/nbd.c b/block/nbd.c index 1239761..8b4a65a 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -94,6 +94,19 @@ typedef struct BDRVNBDState { static int nbd_client_connect(BlockDriverState *bs, Error **errp); +void nbd_clear_bdrvstate(BDRVNBDState *s) +{ + object_unref(OBJECT(s->tlscreds)); + qapi_free_SocketAddress(s->saddr); + s->saddr = NULL; + g_free(s->export); + s->export = NULL; + g_free(s->tlscredsid); + s->tlscredsid = NULL; + g_free(s->x_dirty_bitmap); + s->x_dirty_bitmap = NULL; +} + static void nbd_channel_error(BDRVNBDState *s, int ret) { if (ret == -EIO) { @@ -1855,10 +1868,7 @@ static int nbd_process_options(BlockDriverState *bs, QDict *options, error: if (ret < 0) { - object_unref(OBJECT(s->tlscreds)); - qapi_free_SocketAddress(s->saddr); - g_free(s->export); - g_free(s->tlscredsid); + nbd_clear_bdrvstate(s); } qemu_opts_del(opts); return ret; @@ -1937,12 +1947,7 @@ static void nbd_close(BlockDriverState *bs) BDRVNBDState *s = bs->opaque; nbd_client_close(bs); - - object_unref(OBJECT(s->tlscreds)); - qapi_free_SocketAddress(s->saddr); - g_free(s->export); - g_free(s->tlscredsid); - g_free(s->x_dirty_bitmap); + nbd_clear_bdrvstate(s); } static int64_t nbd_getlength(BlockDriverState *bs)