https://sourceware.org/bugzilla/show_bug.cgi?id=23952
Bug ID: 23952 Summary: A memory leak issue was discovered in bfd Product: binutils Version: 2.31 Status: UNCONFIRMED Severity: normal Priority: P2 Component: binutils Assignee: unassigned at sourceware dot org Reporter: wcventure at 126 dot com Target Milestone: --- Created attachment 11430 --> https://sourceware.org/bugzilla/attachment.cgi?id=11430&action=edit MemoryLeak-POC Hi there, A memory leak issue was discovered in bfd, as distributed in GNU Binutils 2.31. In _bfd_generic_read_minisymbols function in syms.c, the is a heap allocation. But this heap allocation didn't deallocate in the end. The source Code show as follow. > 809 if (storage < 0) > 810 goto error_return; > 811 if (storage == 0) > 812 return 0; > 813 > 814 syms = (asymbol **) bfd_malloc (storage); > 815 if (syms == NULL) > 816 goto error_return; > 817 > 818 if (dynamic) Please use the "./nm -C $POC" to reproduce the bug. To reproduce this bug. You need to build bintuils-2.31 with ASAN, setting following Command: > export ASAN_OPTIONS=abort_on_error=1:symbolize=1:detect_leaks=1 The Leak Sanitizer dumps the stack trace as follows: > ==31800==ERROR: LeakSanitizer: detected memory leaks > > Direct leak of 8 byte(s) in 1 object(s) allocated from: > #0 0x7fd48c209b90 in __interceptor_malloc > (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb90) > #1 0x4298a3 in bfd_malloc > /home/wencheng/Documents/Experiment/binutils-2.31_ASAN/bfd/libbfd.c:271 > #2 0x433e68 in _bfd_generic_read_minisymbols > /home/wencheng/Documents/Experiment/binutils-2.31_ASAN/bfd/syms.c:814 > #3 0x4078d5 in display_rel_file > /home/wencheng/Documents/Experiment/binutils-2.31_ASAN/binutils/nm.c:1113 > #4 0x408b40 in display_file > /home/wencheng/Documents/Experiment/binutils-2.31_ASAN/binutils/nm.c:1325 > #5 0x40a737 in main > /home/wencheng/Documents/Experiment/binutils-2.31_ASAN/binutils/nm.c:1799 > #6 0x7fd48bb7d82f in __libc_start_main > (/lib/x86_64-linux-gnu/libc.so.6+0x2082f) > > SUMMARY: AddressSanitizer: 8 byte(s) leaked in 1 allocation(s). -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils