Re: [Valgrind-users] setns syscall with valgrind

[John R. <jr...@Bi...>]

> In our code we use setns system call. [In] valgrind version (3.8.1), it seems like this syscall is not handled. 
> 
> 
> --2726-- WARNING: unhandled syscall: 308
> --2726-- You may be able to write your own handler.
> --2726-- Read the file README_MISSING_SYSCALL_OR_IOCTL.
> --2726-- Nevertheless we consider this a bug.  Please report
> --2726-- it at http://valgrind.org/support/bug_reports.html.


Version 3.9.0 was released about 7 or 8 months ago.  Why not upgrade?

You should tell us which hardware architecture and which operating system.

Because the setns system call:
	int setns(int fd, int nstype);
does not reference memory, then setns is a no-operation as far as memcheck is concerned.
Write an empty subroutine and put its address into the table:
	static SyscallTableEntry syscall_table[] = { ... };
Then submit your patch at the indicated URL.