Bug#1017791: valgrind: does not support rseq syscall

[Aurelien Jarno]

Package: valgrind
Version: 1:3.18.1-1.1
Severity: important
Tags: patch upstream
User: debian...@lists.debian.org
Usertags: glibc2.35
Forwarded: https://sourceware.org/git/?p=valgrind.git;a=commit;h=1024237358f01009fe233cb1294f3b8211304eaa

Dear maintainer(s),

valgrind does not implement the new rseq syscall, which is getting used
by default starting with glibc 2.35. This causes it to display the
following message, which in turns breaks some autopkgtest [1]:

| WARNING: unhandled amd64-linux syscall: 334
| You may be able to write your own handler.
| Read the file README_MISSING_SYSCALL_OR_IOCTL.
| Nevertheless we consider this a bug. Please report
| it at http://valgrind.org/support/bug_reports.html.

There is already an upstream fix available [2], would it be possible to
get it included in the next upload?

Thanks,
Aurelien

[1] https://ci.debian.net/data/autopkgtest/unstable/amd64/c/critnib/24898218/log.gz
[2] https://sourceware.org/git/?p=valgrind.git;a=commit;h=1024237358f01009fe233cb1294f3b8211304eaa