Message ID | 1408557576-14574-2-git-send-email-mreitz@redhat.com |
---|---|
State | New |
Headers | show |
On 08/20/2014 11:59 AM, Max Reitz wrote: > Currently, the QemuOpts object opts is leaked if anything fails from its > creation up to and including the image repair block. Fix this by freeing > that object in the fail path. > > Signed-off-by: Max Reitz <mreitz@redhat.com> > --- > block/qcow2.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) Reviewed-by: Eric Blake <eblake@redhat.com>
The Wednesday 20 Aug 2014 à 19:59:33 (+0200), Max Reitz wrote : > Currently, the QemuOpts object opts is leaked if anything fails from its > creation up to and including the image repair block. Fix this by freeing > that object in the fail path. > > Signed-off-by: Max Reitz <mreitz@redhat.com> > --- > block/qcow2.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/block/qcow2.c b/block/qcow2.c > index f9e045f..c64d611 100644 > --- a/block/qcow2.c > +++ b/block/qcow2.c > @@ -535,7 +535,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, > unsigned int len, i; > int ret = 0; > QCowHeader header; > - QemuOpts *opts; > + QemuOpts *opts = NULL; > Error *local_err = NULL; > uint64_t ext_end; > uint64_t l1_vm_state_index; > @@ -932,7 +932,6 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, > error_setg(errp, "Unsupported value '%s' for qcow2 option " > "'overlap-check'. Allowed are either of the following: " > "none, constant, cached, all", opt_overlap_check); > - qemu_opts_del(opts); > ret = -EINVAL; > goto fail; > } > @@ -947,6 +946,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, > } > > qemu_opts_del(opts); > + opts = NULL; > > if (s->use_lazy_refcounts && s->qcow_version < 3) { > error_setg(errp, "Lazy refcounts require a qcow2 image with at least " > @@ -964,6 +964,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, > return ret; > > fail: > + qemu_opts_del(opts); > g_free(s->unknown_header_fields); > cleanup_unknown_header_ext(bs); > qcow2_free_snapshots(bs); > -- > 2.0.4 > > Reviewed-by: Benoît Canet <benoit.canet@nodalink.com>
diff --git a/block/qcow2.c b/block/qcow2.c index f9e045f..c64d611 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -535,7 +535,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, unsigned int len, i; int ret = 0; QCowHeader header; - QemuOpts *opts; + QemuOpts *opts = NULL; Error *local_err = NULL; uint64_t ext_end; uint64_t l1_vm_state_index; @@ -932,7 +932,6 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, error_setg(errp, "Unsupported value '%s' for qcow2 option " "'overlap-check'. Allowed are either of the following: " "none, constant, cached, all", opt_overlap_check); - qemu_opts_del(opts); ret = -EINVAL; goto fail; } @@ -947,6 +946,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, } qemu_opts_del(opts); + opts = NULL; if (s->use_lazy_refcounts && s->qcow_version < 3) { error_setg(errp, "Lazy refcounts require a qcow2 image with at least " @@ -964,6 +964,7 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags, return ret; fail: + qemu_opts_del(opts); g_free(s->unknown_header_fields); cleanup_unknown_header_ext(bs); qcow2_free_snapshots(bs);
Currently, the QemuOpts object opts is leaked if anything fails from its creation up to and including the image repair block. Fix this by freeing that object in the fail path. Signed-off-by: Max Reitz <mreitz@redhat.com> --- block/qcow2.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)