From 7abd25b3b94e4abfeea30e4e4971ba902c3fbd53 Mon Sep 17 00:00:00 2001 From: Ole Troan Date: Fri, 21 Jun 2019 16:07:06 +0200 Subject: stats: fix memory leakage when adding / deleting interfaces This fixes two leaks in registering errors in the stats segment. - The error name created by vlib_register_errors() was not freed. - Duplicate error names (when interface readded) was added to the vector. Change-Id: If5fe371e8059cf6678fc785cbf673707b4f4a655 Type: fix Signed-off-by: Ole Troan --- src/vlib/error.c | 7 ++++--- src/vpp/stats/stat_segment.c | 36 ++++++++++++++++++++++++++---------- 2 files changed, 30 insertions(+), 13 deletions(-) (limited to 'src') diff --git a/src/vlib/error.c b/src/vlib/error.c index 1a48c9e89c2..17447b07119 100644 --- a/src/vlib/error.c +++ b/src/vlib/error.c @@ -109,10 +109,11 @@ vlib_error_drop_buffers (vlib_main_t * vm, return n_buffers; } -void vlib_stats_register_error_index (u8 *, u64 *, u64) +void vlib_stats_register_error_index (void *, u8 *, u64 *, u64) __attribute__ ((weak)); void -vlib_stats_register_error_index (u8 * notused, u64 * notused2, u64 notused3) +vlib_stats_register_error_index (void *noutused, u8 * notused2, + u64 * notused3, u64 notused4) { }; @@ -180,7 +181,7 @@ vlib_register_errors (vlib_main_t * vm, { error_name = format (0, "/err/%v/%s%c", n->name, error_strings[i], 0); /* Note: error_name consumed by the following call */ - vlib_stats_register_error_index (error_name, em->counters, + vlib_stats_register_error_index (oldheap, error_name, em->counters, n->error_heap_index + i); } } diff --git a/src/vpp/stats/stat_segment.c b/src/vpp/stats/stat_segment.c index b9d5b23e33e..442a750ce7f 100644 --- a/src/vpp/stats/stat_segment.c +++ b/src/vpp/stats/stat_segment.c @@ -152,7 +152,8 @@ vlib_stats_pop_heap (void *cm_arg, void *oldheap, u32 cindex, } void -vlib_stats_register_error_index (u8 * name, u64 * em_vec, u64 index) +vlib_stats_register_error_index (void *oldheap, u8 * name, u64 * em_vec, + u64 index) { stat_segment_main_t *sm = &stat_segment_main; stat_segment_shared_header_t *shared_header = sm->shared_header; @@ -162,17 +163,32 @@ vlib_stats_register_error_index (u8 * name, u64 * em_vec, u64 index) ASSERT (shared_header); vlib_stat_segment_lock (); + u32 next_vector_index = vec_len (sm->directory_vector); + clib_mem_set_heap (oldheap); /* Exit stats segment */ - memcpy (e.name, name, vec_len (name)); - e.name[vec_len (name)] = '\0'; - e.type = STAT_DIR_TYPE_ERROR_INDEX; - e.offset = index; - e.offset_vector = 0; - vec_add1 (sm->directory_vector, e); + u32 vector_index = lookup_or_create_hash_index (oldheap, (char *) name, + next_vector_index); - /* Warn clients to refresh any pointers they might be holding */ - shared_header->directory_offset = - stat_segment_offset (shared_header, sm->directory_vector); + /* Back to stats segment */ + clib_mem_set_heap (sm->heap); /* Re-enter stat segment */ + + if (next_vector_index == vector_index) + { + memcpy (e.name, name, vec_len (name)); + e.name[vec_len (name)] = '\0'; + e.type = STAT_DIR_TYPE_ERROR_INDEX; + e.offset = index; + e.offset_vector = 0; + vec_add1 (sm->directory_vector, e); + + /* Warn clients to refresh any pointers they might be holding */ + shared_header->directory_offset = + stat_segment_offset (shared_header, sm->directory_vector); + } + else + { + vec_free (name); + } vlib_stat_segment_unlock (); } -- cgit 1.2.3-korg