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[Bug binutils/25372] New: Memory leak in /src/binutils-gdb/bfd/libbfd.c:

From: xhwu_steven at 163 dot com
Subject: [Bug binutils/25372] New: Memory leak in /src/binutils-gdb/bfd/libbfd.c:275:9
Date: Sat, 11 Jan 2020 15:13:35 +0000


            Bug ID: 25372
           Summary: Memory leak in /src/binutils-gdb/bfd/libbfd.c:275:9
           Product: binutils
           Version: 2.34 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: xhwu_steven at 163 dot com
  Target Milestone: ---

Created attachment 12186
  --> https://sourceware.org/bugzilla/attachment.cgi?id=12186&action=edit
Compile binutils with ASAN, and read this file as input.

ASAN report:
==29467==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 4224 byte(s) in 1 object(s) allocated from:
    #0 0x521ffd in malloc
    #1 0x5592b7 in bfd_malloc /src/binutils-gdb/bfd/libbfd.c:275:9
    #2 0x554d7c in bfd_check_format_matches
    #3 0x5547fd in LLVMFuzzerTestOneInput
    #4 0x45a461 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*,
unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:556:15
    #5 0x444f81 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned
long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:292:6
    #6 0x44ac3e in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char
const*, unsigned long))
    #7 0x474b62 in main
    #8 0x7f051ca8582f in __libc_start_main

SUMMARY: AddressSanitizer: 4224 byte(s) leaked in 1 allocation(s).

INFO: a leak has been found in the initial corpus.

INFO: to ignore leaks on libFuzzer side use -detect_leaks=0.

root@b8ff83db9427:/out# ./fuzz_bfd
INFO: Seed: 2632369351
INFO: Loaded 1 modules   (145987 inline 8-bit counters): 145987 [0x1acc8b0,
INFO: Loaded 1 PC tables (145987 PCs): 145987 [0x13e5d38,0x1620168), 
./fuzz_bfd: Running 1 inputs 1 time(s) each.
Running: leak-fd5d9b8ba6dc786baf81293dbe23736ae7c579b4

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