77 lines
1.9 KiB
Diff
77 lines
1.9 KiB
Diff
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From 82ee6d6f77a2e386e42714d6ab56b39fcb00488e Mon Sep 17 00:00:00 2001
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From: Rostislav <rostislav@users.noreply.github.com>
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Date: Sat, 25 Aug 2018 20:50:40 +0000
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Subject: [PATCH 546/617] Fix memory leak of FUSE modules
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---
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lib/fuse.c | 26 +++++++++++++++++++++++---
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1 file changed, 23 insertions(+), 3 deletions(-)
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diff --git a/lib/fuse.c b/lib/fuse.c
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index 11ffc05..b88ef1a 100644
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--- a/lib/fuse.c
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+++ b/lib/fuse.c
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@@ -234,6 +234,18 @@ static int fuse_register_module(const char *name,
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return 0;
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}
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+static void fuse_unregister_module(struct fuse_module *m)
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+{
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+ struct fuse_module **mp;
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+ for (mp = &fuse_modules; *mp; mp = &(*mp)->next) {
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+ if (*mp == m) {
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+ *mp = (*mp)->next;
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+ break;
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+ }
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+ }
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+ free(m->name);
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+ free(m);
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+}
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static int fuse_load_so_module(const char *module)
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{
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@@ -313,8 +325,11 @@ static struct fuse_module *fuse_get_module(const char *module)
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static void fuse_put_module(struct fuse_module *m)
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{
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pthread_mutex_lock(&fuse_context_lock);
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- assert(m->ctr > 0);
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- m->ctr--;
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+ if (m->so)
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+ assert(m->ctr > 0);
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+ /* Builtin modules may already have m->ctr == 0 */
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+ if (m->ctr > 0)
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+ m->ctr--;
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if (!m->ctr && m->so) {
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struct fusemod_so *so = m->so;
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assert(so->ctr > 0);
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@@ -323,13 +338,15 @@ static void fuse_put_module(struct fuse_module *m)
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struct fuse_module **mp;
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for (mp = &fuse_modules; *mp;) {
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if ((*mp)->so == so)
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- *mp = (*mp)->next;
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+ fuse_unregister_module(*mp);
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else
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mp = &(*mp)->next;
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}
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dlclose(so->handle);
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free(so);
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}
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+ } else if (!m->ctr) {
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+ fuse_unregister_module(m);
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}
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pthread_mutex_unlock(&fuse_context_lock);
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}
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@@ -4962,6 +4979,9 @@ void fuse_destroy(struct fuse *f)
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assert(list_empty(&f->partial_slabs));
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assert(list_empty(&f->full_slabs));
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+ while (fuse_modules) {
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+ fuse_put_module(fuse_modules);
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+ }
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free(f->id_table.array);
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free(f->name_table.array);
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pthread_mutex_destroy(&f->lock);
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--
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1.8.3.1
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