https://sourceware.org/bugzilla/show_bug.cgi?id=31595
Bug ID: 31595
Summary: Abort in AArch64 disassembler's
get_sreg_qualifier_from_value() function
Product: binutils
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: nickc at redhat dot com
Target Milestone: ---
Attempting to disassemble the latest version of glibc compiled for the AArch64
for Fedora Rawhide results in:
$ objdump -D lib64/libc.so.6
objdump: opcodes/aarch64-dis.c:251: get_sreg_qualifier_from_value:
Assertion `value <= 0x4 && aarch64_get_qualifier_standard_value (qualifier)
== value' failed.
Abort (core dumped)
This was using the version of libc.so.6 obtained from
glibc-2.39.9000-10.fc41.aarch64.rpm but I can also reproduce the problem with a
libc.so.6 from RHEL-9. I suspect that any recent-ish version of libc.so will
do.
I suspect that the issue is with the processing of the rcpc3 size field, since
the stack backtrace shows that get_sreg_qualifier_from_value is called from
do_special_decoding at opcodes/aarch64-dis.c:2678.
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