| Summary: | memory leak in nm, bfd_malloc | ||
|---|---|---|---|
| Product: | binutils | Reporter: | Heqing HUANG <featherrain26> |
| Component: | binutils | Assignee: | Alan Modra <amodra> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | ||
| Priority: | P2 | ||
| Version: | 2.32 | ||
| Target Milestone: | 2.34 | ||
| Host: | Target: | ||
| Build: | Last reconfirmed: | 2020-01-13 00:00:00 | |
| Project(s) to access: | ssh public key: | ||
| Attachments: | POC file | ||
*** Bug 25363 has been marked as a duplicate of this bug. *** The master branch has been updated by Alan Modra <amodra@sourceware.org>: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=805f38bc551de820bcd7b31d3c5731ae27cf853a commit 805f38bc551de820bcd7b31d3c5731ae27cf853a Author: Alan Modra <amodra@gmail.com> Date: Mon Jan 13 19:36:13 2020 +1030 PR25362, memory leak in nm PR 25362 * nm.c (display_rel_file): Free dyn_syms. Fixed. |
Created attachment 12183 [details] POC file Hi, there. There is a memory leak in file binutils/nm.c, get_data function. Here is the reproducing environment and procedure: Distributor ID: Ubuntu Description: Ubuntu 16.04.6 LTS Release: 16.04 Codename: xenial gcc: 5.4.0 compilation: CFLAGS="-fsanitize=address,undefined" ./configure run: ./nm-new -C -a -l --synthetic poc Here is the error message: ================================================================= ==19825==ERROR: LeakSanitizer: detected memory leaks Direct leak of 4294967344 byte(s) in 1 object(s) allocated from: #0 0x7ffff6f02602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602) #1 0x44075f in bfd_malloc (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x44075f) #2 0x4b3d9b in _bfd_x86_elf_get_synthetic_symtab (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x4b3d9b) #3 0x649790 in elf_i386_get_synthetic_symtab (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x649790) #4 0x40a137 in display_rel_file (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x40a137) #5 0x40b1df in display_file (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x40b1df) #6 0x40db2a in main (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x40db2a) #7 0x7ffff5baf82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f) Direct leak of 64 byte(s) in 1 object(s) allocated from: #0 0x7ffff6f02602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602) #1 0x7fbefb in xmalloc (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x7fbefb) #2 0x409f2e in display_rel_file (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x409f2e) #3 0x40b1df in display_file (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x40b1df) #4 0x40db2a in main (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x40db2a) #5 0x7ffff5baf82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f) Direct leak of 56 byte(s) in 2 object(s) allocated from: #0 0x7ffff6f02602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602) #1 0x44075f in bfd_malloc (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x44075f) #2 0x647acb in elf_i386_get_synthetic_symtab (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x647acb) #3 0x40a137 in display_rel_file (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x40a137) #4 0x40b1df in display_file (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x40b1df) #5 0x40db2a in main (/playground/playground/binutils-2.32-r/binutils-2.32/binutils/nm-new+0x40db2a) #6 0x7ffff5baf82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f) SUMMARY: AddressSanitizer: 4294967464 byte(s) leaked in 4 allocation(s). Regards,