https://bugs.kde.org/show_bug.cgi?id=446429
Bug ID: 446429
Summary: vex x86->IR: unhandled instruction bytes: 0xFB 0xFF
0xFF 0x8B
Product: valgrind
Version: 3.18.1
Platform: Other
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: vex
Assignee: jsew...@acm.org
Reporter: prashanth.fe...@gmail.com
Target Milestone: ---
SUMMARY
***
vex x86->IR: unhandled instruction bytes: 0xFB 0xFF 0xFF 0x8B
Memcheck: the 'impossible' happened:
memcheck:isAlwaysDefd:partial overlap
host stacktrace:
==8958== at 0x5803C91F: ??? (in
/usr/test/libexec/valgrind/memcheck-x86-linux)
sched status:
running_tid=1
Thread 1: status = VgTs_Runnable (lwpid 8958)
==8958== at 0x44FC835: sessmgr_pgw_handle_new_call (sessmgr_pgw.c:34924)
< SNIP >
==8958== by 0xBB107F9: main (sn_main.c:464)
client stack range: [0xFE897000 0xFEB19FFF] client SP: 0xFE898670
valgrind stack range: [0x82A7F000 0x82B7EFFF] top usage: 7392 of 1048576
Note: see also the FAQ in the source distribution.
It contains workarounds to several common problems.
In particular, if Valgrind aborted or crashed after
identifying problems in your program, there's a good chance
that fixing those problems will prevent Valgrind aborting or
crashing, especially if it happened in m_mallocfree.c.
If that doesn't help, please report this bug to: www.valgrind.org
In the bug report, send all the above text, the valgrind
version, and what OS and version you are using. Thanks.
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
I need to know what is the instruction for these opcodes "0xFB 0xFF 0xFF 0x8B"
I would like to know how to fix this ? and workaround ?
***
STEPS TO REPRODUCE
1.
2.
3.
OBSERVED RESULT
Process Crash due to vex x86->IR: unhandled instruction bytes: 0xFB 0xFF 0xFF
0x8B
EXPECTED RESULT
No Crash
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
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