Re: [Valgrind-users] new error message from Valgrind

[Tom H. <to...@co...>]

On 28/07/2022 21:39, Mark Roberts wrote:
> I recently upgraded from Ubutu 20.04 to 22.04 and am now getting a new 
> error message from Valgrind:
> 
> --915-- WARNING: unhandled amd64-linux syscall: 334
> 
> --915-- You may be able to write your own handler.
> 
> --915-- Read the file README_MISSING_SYSCALL_OR_IOCTL.
> 
> --915-- Nevertheless we consider this a bug.  Please report
> 
> --915-- it at http://valgrind.org/support/bug_reports.html 
> <http://valgrind.org/support/bug_reports.html>.
> 
> Using same version of Valgrind as before (3.17).
> 
> Any ideas as to what’s happening?

Yes, your libc has started trying to use rseq.

It's harmless - the next version of valgrind will silently
reject it with ENOSYS which is what is happening now anyway
just with a warning.

Tom

-- 
Tom Hughes (to...@co...)
http://compton.nu/