Re: [libopcodes] Decoder crash and incorrect results
Hi Nathan, > Redhat Enterprise Linux 6. RHEL 6 contains a very old version of the binutils (2.20). We are now on release 2.26... > I have found that the library will segfault given certain inputs > to print_insn_i386. Here is the code I am using to decode: Does the library also crash if you place these inputs into an object file, assemble them, and then try to run "objdump -d" on them ? If you cab reproduce these seg-faults using the current binutils sources, please file a bug report here, including a way to reproduce the problem if at all possible: https://sourceware.org/bugzilla/ Cheers Nick ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug binutils/19630] crash in bin/as null pointer dereference
https://sourceware.org/bugzilla/show_bug.cgi?id=19630 --- Comment #1 from cvs-commit at gcc dot gnu.org --- The master branch has been updated by Nick Clifton : https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=3be64886b5cd7e877d8783a53b81e2c6f7d01307 commit 3be64886b5cd7e877d8783a53b81e2c6f7d01307 Author: Nick Clifton Date: Fri Feb 19 13:19:57 2016 + Prevent seg-fault in gas reading a binary input file. PR 19630 * read.c (read_a_source_file): Check for assemble_one returning with input_line_pointer set to NULL. -- 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
[Bug binutils/19630] crash in bin/as null pointer dereference
https://sourceware.org/bugzilla/show_bug.cgi?id=19630 Nick Clifton changed: What|Removed |Added Status|NEW |RESOLVED CC||nickc at redhat dot com Resolution|--- |FIXED --- Comment #2 from Nick Clifton --- Hi Aladdin, Thanks for reporting this problem. GAS is not really expected to work when given a binary input file, but it should not generate a seg-fault either. So I have checked in a small patch to prevent that happening. For this particular input file anyway. Cheers Nick -- 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
[Bug binutils/19628] null pointer dereference when linking crafted file
https://sourceware.org/bugzilla/show_bug.cgi?id=19628 --- Comment #1 from cvs-commit at gcc dot gnu.org --- The master branch has been updated by Nick Clifton : https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=737684142b3f7dfa6d440c8363750911a8ac20ce commit 737684142b3f7dfa6d440c8363750911a8ac20ce Author: Nick Clifton Date: Fri Feb 19 15:20:30 2016 + Fix a seg-fault in the linker when it encounters a corrupt binary containing a reloc with no associated symbol. PR ld/19628 * reloc.c (bfd_generic_get_relocated_section_contents): Stop processing if we encounter a reloc without an associated symbol. -- 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
[Bug binutils/19628] null pointer dereference when linking crafted file
https://sourceware.org/bugzilla/show_bug.cgi?id=19628 Nick Clifton changed: What|Removed |Added Status|NEW |RESOLVED CC||nickc at redhat dot com Resolution|--- |FIXED --- Comment #2 from Nick Clifton --- Hi Aladdin, Thanks for reporting this problem. I have checked in a patch which will prevent the null pointer dereference and instead issue an error message. Cheers Nick -- 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
[Bug binutils/19629] crash in ld.bfd - possible null pointer dereference
https://sourceware.org/bugzilla/show_bug.cgi?id=19629 --- Comment #1 from cvs-commit at gcc dot gnu.org --- The master branch has been updated by Nick Clifton : https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e517df3dbf7556ddb389228d713a804594ee3c1f commit e517df3dbf7556ddb389228d713a804594ee3c1f Author: Nick Clifton Date: Fri Feb 19 15:55:06 2016 + Prevent a seg-fault in the linker when accessing a specially crafted, corrupt, aout binary. PR ld/19629 * aoutx.h (aout_link_add_symbols): Check for out of range string table offsets. -- 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
[Bug binutils/19629] crash in ld.bfd - possible null pointer dereference
https://sourceware.org/bugzilla/show_bug.cgi?id=19629 Nick Clifton changed: What|Removed |Added Status|NEW |RESOLVED CC||nickc at redhat dot com Resolution|--- |FIXED --- Comment #2 from Nick Clifton --- Hi Alanddin, Thanks for reporting this problem. I have checked in a patch which adds checks to make sure that the linker does not attempt to access beyond the end of the aout format's string table. Cheers Nick -- 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
[Bug binutils/19629] crash in ld.bfd - possible null pointer dereference
https://sourceware.org/bugzilla/show_bug.cgi?id=19629 --- Comment #3 from Aladdin Mubaied --- Thanks, do you think CVE is required here to warn users about this bug? -- 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
[Bug binutils/19630] crash in bin/as null pointer dereference
https://sourceware.org/bugzilla/show_bug.cgi?id=19630 --- Comment #3 from Aladdin Mubaied --- Thanks, do you think CVE is required here to warn users about this bug? -- 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
[Bug binutils/19628] null pointer dereference when linking crafted file
https://sourceware.org/bugzilla/show_bug.cgi?id=19628 --- Comment #3 from Aladdin Mubaied --- Thanks, do you think CVE is required here to warn users about this bug? -- 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
[Bug binutils/19685] New: vcmppd, vcmpps, vcmpsd, vcmpss disassembly is wrong
https://sourceware.org/bugzilla/show_bug.cgi?id=19685 Bug ID: 19685 Summary: vcmppd, vcmpps, vcmpsd, vcmpss disassembly is wrong Product: binutils Version: 2.26 Status: NEW Severity: normal Priority: P2 Component: binutils Assignee: unassigned at sourceware dot org Reporter: jdetter at wisc dot edu Target Milestone: --- I compiled the following lines using GNU as: vcmppd $0x0, %xmm0, %xmm0, %xmm0 vcmpps $0x0, %xmm0, %xmm0, %xmm0 vcmpsd $0x0, %xmm0, %xmm0, %xmm0 vcmpss $0x0, %xmm0, %xmm0, %xmm0 And the disassembly doesn't match. The mnemonics are wrong and objdump interprets the instruction with 3 operands instead of 4: 40049a: c5 f9 c2 c0 00 vcmpeqpd %xmm0,%xmm0,%xmm0 40049f: c5 f8 c2 c0 00 vcmpeqps %xmm0,%xmm0,%xmm0 4004a4: c5 fb c2 c0 00 vcmpeqsd %xmm0,%xmm0,%xmm0 4004a9: c5 fa c2 c0 00 vcmpeqss %xmm0,%xmm0,%xmm0 Output from version: [detter@galapagos-03] (31)$ objdump --version GNU objdump (GNU Binutils) 2.26.20160125 Copyright (C) 2015 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License version 3 or (at your option) any later version. This program has absolutely no warranty. -- 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
