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| author |   Andrzej Hunt <ajrhunt@google.com> | 2021-02-19 20:13:10 +0000 |
|---|---|---|
| committer |   Junio C Hamano <gitster@pobox.com> | 2021-02-22 13:45:01 -0800 |
| commit | bf4bb9f9f5130a7b299f7810fb87a40cdd1bd8ee (patch) | |
| tree | 189bf8bb048cbf745b7c91653ca9dfb0df5f3a56 | |
| parent | The ninth batch (diff) | |
| download | git-bf4bb9f9f5130a7b299f7810fb87a40cdd1bd8ee.tar.xz git-bf4bb9f9f5130a7b299f7810fb87a40cdd1bd8ee.zip | |
commit-graph: avoid leaking topo_levels slab in write_commit_graph()
write_commit_graph initialises topo_levels using init_topo_level_slab(),
next it calls compute_topological_levels() which can cause the slab to
grow, we therefore need to clear the slab again using
clear_topo_level_slab() when we're done.
First introduced in 72a2bfca (commit-graph: add a slab to store
topological levels, 2021-01-16).
LeakSanitizer output:
==1026==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 8 byte(s) in 1 object(s) allocated from:
#0 0x498ae9 in realloc /src/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:164:3
#1 0xafbed8 in xrealloc /src/git/wrapper.c:126:8
#2 0x7966d1 in topo_level_slab_at_peek /src/git/commit-graph.c:71:1
#3 0x7965e0 in topo_level_slab_at /src/git/commit-graph.c:71:1
#4 0x78fbf5 in compute_topological_levels /src/git/commit-graph.c:1472:12
#5 0x78c5c3 in write_commit_graph /src/git/commit-graph.c:2456:2
#6 0x535c5f in graph_write /src/git/builtin/commit-graph.c:299:6
#7 0x5350ca in cmd_commit_graph /src/git/builtin/commit-graph.c:337:11
#8 0x4cddb1 in run_builtin /src/git/git.c:453:11
#9 0x4cabe2 in handle_builtin /src/git/git.c:704:3
#10 0x4cd084 in run_argv /src/git/git.c:771:4
#11 0x4ca424 in cmd_main /src/git/git.c:902:19
#12 0x707fb6 in main /src/git/common-main.c:52:11
#13 0x7fee4249383f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2083f)
Indirect leak of 524256 byte(s) in 1 object(s) allocated from:
#0 0x498942 in calloc /src/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:154:3
#1 0xafc088 in xcalloc /src/git/wrapper.c:140:8
#2 0x796870 in topo_level_slab_at_peek /src/git/commit-graph.c:71:1
#3 0x7965e0 in topo_level_slab_at /src/git/commit-graph.c:71:1
#4 0x78fbf5 in compute_topological_levels /src/git/commit-graph.c:1472:12
#5 0x78c5c3 in write_commit_graph /src/git/commit-graph.c:2456:2
#6 0x535c5f in graph_write /src/git/builtin/commit-graph.c:299:6
#7 0x5350ca in cmd_commit_graph /src/git/builtin/commit-graph.c:337:11
#8 0x4cddb1 in run_builtin /src/git/git.c:453:11
#9 0x4cabe2 in handle_builtin /src/git/git.c:704:3
#10 0x4cd084 in run_argv /src/git/git.c:771:4
#11 0x4ca424 in cmd_main /src/git/git.c:902:19
#12 0x707fb6 in main /src/git/common-main.c:52:11
#13 0x7fee4249383f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2083f)
SUMMARY: AddressSanitizer: 524264 byte(s) leaked in 2 allocation(s).
Signed-off-by: Andrzej Hunt <ajrhunt@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | commit-graph.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/commit-graph.c b/commit-graph.c index ed31843fa52..7a5f15b8426 100644 --- a/commit-graph.c +++ b/commit-graph.c @@ -2471,6 +2471,7 @@ cleanup: free(ctx->graph_name); free(ctx->commits.list); oid_array_clear(&ctx->oids); + clear_topo_level_slab(&topo_levels); if (ctx->commit_graph_filenames_after) { for (i = 0; i < ctx->num_commit_graphs_after; i++) { |