* [PATCH] Btrfs: don't leak reloc root nodes on error @ 2016-09-02 19:25 Josef Bacik 2016-09-03 1:08 ` Liu Bo 0 siblings, 1 reply; 6+ messages in thread From: Josef Bacik @ 2016-09-02 19:25 UTC (permalink / raw) To: linux-btrfs, kernel-team We don't track the reloc roots in any sort of normal way, so the only way the root/commit_root nodes get free'd is if the relocation finishes successfully and the reloc root is deleted. Fix this by free'ing them in free_reloc_roots. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com> --- fs/btrfs/relocation.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 7fc6ea7..62dfc2c 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -2349,6 +2349,10 @@ void free_reloc_roots(struct list_head *list) while (!list_empty(list)) { reloc_root = list_entry(list->next, struct btrfs_root, root_list); + free_extent_buffer(reloc_root->node); + free_extent_buffer(reloc_root->commit_root); + reloc_root->node = NULL; + reloc_root->commit_root = NULL; __del_reloc_root(reloc_root); } } -- 2.7.4 ^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH] Btrfs: don't leak reloc root nodes on error 2016-09-02 19:25 [PATCH] Btrfs: don't leak reloc root nodes on error Josef Bacik @ 2016-09-03 1:08 ` Liu Bo 2016-09-05 15:20 ` David Sterba 0 siblings, 1 reply; 6+ messages in thread From: Liu Bo @ 2016-09-03 1:08 UTC (permalink / raw) To: Josef Bacik; +Cc: linux-btrfs On Fri, Sep 02, 2016 at 03:25:43PM -0400, Josef Bacik wrote: > We don't track the reloc roots in any sort of normal way, so the only way the > root/commit_root nodes get free'd is if the relocation finishes successfully and > the reloc root is deleted. Fix this by free'ing them in free_reloc_roots. > Thanks, Looks good. > > Signed-off-by: Josef Bacik <jbacik@fb.com> > --- > fs/btrfs/relocation.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c > index 7fc6ea7..62dfc2c 100644 > --- a/fs/btrfs/relocation.c > +++ b/fs/btrfs/relocation.c > @@ -2349,6 +2349,10 @@ void free_reloc_roots(struct list_head *list) > while (!list_empty(list)) { > reloc_root = list_entry(list->next, struct btrfs_root, > root_list); > + free_extent_buffer(reloc_root->node); > + free_extent_buffer(reloc_root->commit_root); > + reloc_root->node = NULL; > + reloc_root->commit_root = NULL; What about reloc_root itself? Thanks, -liubo > __del_reloc_root(reloc_root); > } > } > -- > 2.7.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] Btrfs: don't leak reloc root nodes on error 2016-09-03 1:08 ` Liu Bo @ 2016-09-05 15:20 ` David Sterba 2016-09-06 19:22 ` Liu Bo 0 siblings, 1 reply; 6+ messages in thread From: David Sterba @ 2016-09-05 15:20 UTC (permalink / raw) To: Liu Bo; +Cc: Josef Bacik, linux-btrfs On Fri, Sep 02, 2016 at 06:08:35PM -0700, Liu Bo wrote: > On Fri, Sep 02, 2016 at 03:25:43PM -0400, Josef Bacik wrote: > > We don't track the reloc roots in any sort of normal way, so the only way the > > root/commit_root nodes get free'd is if the relocation finishes successfully and > > the reloc root is deleted. Fix this by free'ing them in free_reloc_roots. > > Thanks, > > Looks good. > > > > > Signed-off-by: Josef Bacik <jbacik@fb.com> > > --- > > fs/btrfs/relocation.c | 4 ++++ > > 1 file changed, 4 insertions(+) > > > > diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c > > index 7fc6ea7..62dfc2c 100644 > > --- a/fs/btrfs/relocation.c > > +++ b/fs/btrfs/relocation.c > > @@ -2349,6 +2349,10 @@ void free_reloc_roots(struct list_head *list) > > while (!list_empty(list)) { > > reloc_root = list_entry(list->next, struct btrfs_root, > > root_list); > > + free_extent_buffer(reloc_root->node); > > + free_extent_buffer(reloc_root->commit_root); > > + reloc_root->node = NULL; > > + reloc_root->commit_root = NULL; > > What about reloc_root itself? > > __del_reloc_root(reloc_root); It's deleted at the end of __del_reloc_root ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] Btrfs: don't leak reloc root nodes on error 2016-09-05 15:20 ` David Sterba @ 2016-09-06 19:22 ` Liu Bo 2016-09-21 14:00 ` David Sterba 0 siblings, 1 reply; 6+ messages in thread From: Liu Bo @ 2016-09-06 19:22 UTC (permalink / raw) To: dsterba; +Cc: Josef Bacik, linux-btrfs On Mon, Sep 05, 2016 at 05:20:53PM +0200, David Sterba wrote: > On Fri, Sep 02, 2016 at 06:08:35PM -0700, Liu Bo wrote: > > On Fri, Sep 02, 2016 at 03:25:43PM -0400, Josef Bacik wrote: > > > We don't track the reloc roots in any sort of normal way, so the only way the > > > root/commit_root nodes get free'd is if the relocation finishes successfully and > > > the reloc root is deleted. Fix this by free'ing them in free_reloc_roots. > > > Thanks, > > > > Looks good. > > > > > > > > Signed-off-by: Josef Bacik <jbacik@fb.com> > > > --- > > > fs/btrfs/relocation.c | 4 ++++ > > > 1 file changed, 4 insertions(+) > > > > > > diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c > > > index 7fc6ea7..62dfc2c 100644 > > > --- a/fs/btrfs/relocation.c > > > +++ b/fs/btrfs/relocation.c > > > @@ -2349,6 +2349,10 @@ void free_reloc_roots(struct list_head *list) > > > while (!list_empty(list)) { > > > reloc_root = list_entry(list->next, struct btrfs_root, > > > root_list); > > > + free_extent_buffer(reloc_root->node); > > > + free_extent_buffer(reloc_root->commit_root); > > > + reloc_root->node = NULL; > > > + reloc_root->commit_root = NULL; > > > > What about reloc_root itself? > > > > __del_reloc_root(reloc_root); > > It's deleted at the end of __del_reloc_root __del_reloc_root() is dealing with the associated rb_node, not reloc_root. I posted a patch to free reloc_root while free'ing its corresponding fs root, but it'd be good if we can free it here. Thanks, -liubo ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] Btrfs: don't leak reloc root nodes on error 2016-09-06 19:22 ` Liu Bo @ 2016-09-21 14:00 ` David Sterba 2016-09-21 22:45 ` [PATCH] Btrfs: don't leak reloc root nodes on errorg Liu Bo 0 siblings, 1 reply; 6+ messages in thread From: David Sterba @ 2016-09-21 14:00 UTC (permalink / raw) To: Liu Bo; +Cc: dsterba, Josef Bacik, linux-btrfs On Tue, Sep 06, 2016 at 12:22:01PM -0700, Liu Bo wrote: > On Mon, Sep 05, 2016 at 05:20:53PM +0200, David Sterba wrote: > > On Fri, Sep 02, 2016 at 06:08:35PM -0700, Liu Bo wrote: > > > On Fri, Sep 02, 2016 at 03:25:43PM -0400, Josef Bacik wrote: > > > > We don't track the reloc roots in any sort of normal way, so the only way the > > > > root/commit_root nodes get free'd is if the relocation finishes successfully and > > > > the reloc root is deleted. Fix this by free'ing them in free_reloc_roots. > > > > Thanks, > > > > > > Looks good. > > > > > > > > > > > Signed-off-by: Josef Bacik <jbacik@fb.com> > > > > --- > > > > fs/btrfs/relocation.c | 4 ++++ > > > > 1 file changed, 4 insertions(+) > > > > > > > > diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c > > > > index 7fc6ea7..62dfc2c 100644 > > > > --- a/fs/btrfs/relocation.c > > > > +++ b/fs/btrfs/relocation.c > > > > @@ -2349,6 +2349,10 @@ void free_reloc_roots(struct list_head *list) > > > > while (!list_empty(list)) { > > > > reloc_root = list_entry(list->next, struct btrfs_root, > > > > root_list); > > > > + free_extent_buffer(reloc_root->node); > > > > + free_extent_buffer(reloc_root->commit_root); > > > > + reloc_root->node = NULL; > > > > + reloc_root->commit_root = NULL; > > > > > > What about reloc_root itself? > > > > > > __del_reloc_root(reloc_root); > > > > It's deleted at the end of __del_reloc_root > > __del_reloc_root() is dealing with the associated rb_node, not > reloc_root. > > I posted a patch to free reloc_root while free'ing its corresponding fs > root, but it'd be good if we can free it here. Can you please point me to the patch? ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] Btrfs: don't leak reloc root nodes on errorg 2016-09-21 14:00 ` David Sterba @ 2016-09-21 22:45 ` Liu Bo 0 siblings, 0 replies; 6+ messages in thread From: Liu Bo @ 2016-09-21 22:45 UTC (permalink / raw) To: dsterba; +Cc: Josef Bacik, linux-btrfs On Wed, Sep 21, 2016 at 04:00:05PM +0200, David Sterba wrote: > On Tue, Sep 06, 2016 at 12:22:01PM -0700, Liu Bo wrote: > > On Mon, Sep 05, 2016 at 05:20:53PM +0200, David Sterba wrote: > > > On Fri, Sep 02, 2016 at 06:08:35PM -0700, Liu Bo wrote: > > > > On Fri, Sep 02, 2016 at 03:25:43PM -0400, Josef Bacik wrote: > > > > > We don't track the reloc roots in any sort of normal way, so the only way the > > > > > root/commit_root nodes get free'd is if the relocation finishes successfully and > > > > > the reloc root is deleted. Fix this by free'ing them in free_reloc_roots. > > > > > Thanks, > > > > > > > > Looks good. > > > > > > > > > > > > > > Signed-off-by: Josef Bacik <jbacik@fb.com> > > > > > --- > > > > > fs/btrfs/relocation.c | 4 ++++ > > > > > 1 file changed, 4 insertions(+) > > > > > > > > > > diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c > > > > > index 7fc6ea7..62dfc2c 100644 > > > > > --- a/fs/btrfs/relocation.c > > > > > +++ b/fs/btrfs/relocation.c > > > > > @@ -2349,6 +2349,10 @@ void free_reloc_roots(struct list_head *list) > > > > > while (!list_empty(list)) { > > > > > reloc_root = list_entry(list->next, struct btrfs_root, > > > > > root_list); > > > > > + free_extent_buffer(reloc_root->node); > > > > > + free_extent_buffer(reloc_root->commit_root); > > > > > + reloc_root->node = NULL; > > > > > + reloc_root->commit_root = NULL; > > > > > > > > What about reloc_root itself? > > > > > > > > __del_reloc_root(reloc_root); > > > > > > It's deleted at the end of __del_reloc_root > > > > __del_reloc_root() is dealing with the associated rb_node, not > > reloc_root. > > > > I posted a patch to free reloc_root while free'ing its corresponding fs > > root, but it'd be good if we can free it here. > > Can you please point me to the patch? Btrfs: fix memory leak of reloc_root https://patchwork.kernel.org/patch/9238383/ Thanks, -liubo ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2016-09-21 22:45 UTC | newest] Thread overview: 6+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2016-09-02 19:25 [PATCH] Btrfs: don't leak reloc root nodes on error Josef Bacik 2016-09-03 1:08 ` Liu Bo 2016-09-05 15:20 ` David Sterba 2016-09-06 19:22 ` Liu Bo 2016-09-21 14:00 ` David Sterba 2016-09-21 22:45 ` [PATCH] Btrfs: don't leak reloc root nodes on errorg Liu Bo
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