https://sourceware.org/bugzilla/show_bug.cgi?id=20897
Bug ID: 20897
Summary: AS: dumping stats in folder leads to a crash
Product: binutils
Version: 2.28 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: boehme.marcel at gmail dot com
Target Milestone: ---
Dear all,
The following bug was found with AFLFast, a fork of AFL, in a 24 hour fuzzing
session on Binutils. Thanks also to Van-Thuan Pham.
The assembler crashes for the following execution on Ubuntu 16.04 x86_64 and
14.04 x86_64 for Binutils v2.24, v2.26.1, and trunk:
$ touch a
$ as --statistics -o/ a
Assembler messages:
Fatal error: can't create /: Is a directory
as: total time in assembly: 0.000000
as: data size 135168
frag chains:
Segmentation fault
Valgrind says:
==121985== Invalid read of size 8
==121985== at 0x4E2393: subsegs_print_statistics (subsegs.c:301)
==121985== by 0x412394: dump_statistics (as.c:1058)
==121985== by 0x9D7F71: xatexit_cleanup (xatexit.c:98)
==121985== by 0x9D8C85: xexit (xexit.c:50)
==121985== by 0x479EC1: as_fatal (messages.c:286)
==121985== by 0x47B306: output_file_create (output-file.c:43)
==121985== by 0x407BA7: main (as.c:1256)
==121985== Address 0x90 is not stack'd, malloc'd or (recently) free'd
Best regards,
- Marcel
--
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
