https://sourceware.org/bugzilla/show_bug.cgi?id=21155
Bug ID: 21155
Summary: readelf segfault - PR 21137 seems to be incomplete
Product: binutils
Version: 2.29 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: thuanpv at comp dot nus.edu.sg
Target Milestone: ---
Created attachment 9822
--> https://sourceware.org/bugzilla/attachment.cgi?id=9822&action=edit
Crashing input
Dear all,
This bug was found with AFLGo, a directed version of AFL/AFLFast. Thanks also
to Marcel Böhme.
This bug was found on Ubuntu 14.04 64-bit & binutils was checked out from main
repository at git://sourceware.org/git/binutils-gdb.git. Its commit is
61697d017e114d7667fbb340fb73f8184d48ee5a (Tue Feb 14 00:00:30 2017)
binutils was built with ASAN using gcc-6.2 and clang-3.4. The configure command
was:
CC=clang CFLAGS="-DFORTIFY_SOURCE=2 -fstack-protector-all
-fsanitize=undefined,address -fno-omit-frame-pointer -g -Wno-error"
../configure --disable-shared --disable-gdb --disable-libdecnumber
--disable-readline --disable-sim
To reproduce:
Download the attached file - bug_1
readelf -w bug_1
Valgrind says:
readelf: Error: Section 7 has invalid sh_entsize of 0000000000001118
readelf: Error: (Using the expected size of 16 for the rest of this dump)
readelf: Error: Reading 0x210 bytes extends past end of file for symbols
readelf: Warning: unable to apply unsupported reloc type 8 to section
.debug_info
readelf: Warning: unable to apply unsupported reloc type 0 to section
.debug_info
readelf: Warning: unable to apply unsupported reloc type 10 to section
.debug_info
readelf: Warning: unable to apply unsupported reloc type 53 to section
.debug_info
readelf: Warning: unable to apply unsupported reloc type 8 to section
.debug_info
readelf: Warning: unable to apply unsupported reloc type 2 to section
.debug_info
==51968==
==51968== Process terminating with default action of signal 11 (SIGSEGV)
==51968== Bad permissions for mapped region at address 0x5033C3D
==51968== at 0x438EAB: byte_put_little_endian (elfcomm.c:81)
==51968== by 0x41D538: target_specific_reloc_handling (readelf.c:11805)
==51968== by 0x41D538: apply_relocations (readelf.c:12431)
==51968== by 0x41E506: load_specific_debug_section (readelf.c:13021)
==51968== by 0x4239DA: display_debug_section (readelf.c:13125)
==51968== by 0x4239DA: process_section_contents (readelf.c:13207)
==51968== by 0x4239DA: process_object (readelf.c:16899)
==51968== by 0x402111: process_file (readelf.c:17273)
==51968== by 0x402111: main (readelf.c:17344)
=================================================================
==73882==ERROR: AddressSanitizer: SEGV on unknown address 0x610fffe39dbd (pc
0x00000072497d sp 0x7ffc4e09d0a0 bp 0x7ffc4e09d350 T0)
#0 0x72497c in byte_put_little_endian
/home/ubuntu/thesis/subjects/binutils-gdb-nick/build-asan/binutils/../../binutils/elfcomm.c:81
#1 0x54da2b in target_specific_reloc_handling
/home/ubuntu/thesis/subjects/binutils-gdb-nick/build-asan/binutils/../../binutils/readelf.c:11805
#2 0x52e8de in apply_relocations
/home/ubuntu/thesis/subjects/binutils-gdb-nick/build-asan/binutils/../../binutils/readelf.c:12431
#3 0x4847c9 in load_specific_debug_section
/home/ubuntu/thesis/subjects/binutils-gdb-nick/build-asan/binutils/../../binutils/readelf.c:13021
#4 0x56654c in display_debug_section
/home/ubuntu/thesis/subjects/binutils-gdb-nick/build-asan/binutils/../../binutils/readelf.c:13125
#5 0x4e1a7f in process_section_contents
/home/ubuntu/thesis/subjects/binutils-gdb-nick/build-asan/binutils/../../binutils/readelf.c:13207
#6 0x48d720 in process_object
/home/ubuntu/thesis/subjects/binutils-gdb-nick/build-asan/binutils/../../binutils/readelf.c:16899
#7 0x488475 in process_file
/home/ubuntu/thesis/subjects/binutils-gdb-nick/build-asan/binutils/../../binutils/readelf.c:17273
#8 0x4856d3 in main
/home/ubuntu/thesis/subjects/binutils-gdb-nick/build-asan/binutils/../../binutils/readelf.c:17344
#9 0x7f3fd362af44 (/lib/x86_64-linux-gnu/libc.so.6+0x21f44)
#10 0x47ddfc in _start
(/home/ubuntu/thesis/subjects/binutils-gdb-nick/build-asan/binutils/readelf+0x47ddfc)
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