[LTP] [PATCH] listmount04: Detect EBADF behavior dynamically at runtime

Petr Vorel pvorel@suse.cz
Mon Jul 27 10:27:38 CEST 2026


Hi Wake Liu,

...
> > -	else
> > +		tst_res(TINFO, "Detected kernel with EBADF behavior for invalid mnt_ns_fd");
> > +	} else if (TST_ERR == EINVAL) {
> >  		kver = BEFORE_6_17_9;
> > +		tst_res(TINFO, "Detected kernel with EINVAL behavior for invalid mnt_ns_fd");
> > +	} else if (TST_ERR == ENOSYS) {
> > +		tst_brk(TCONF, "listmount() syscall not supported");
> This is IMHO not supported, because it's part of tst_syscall().

I'm sorry, I meant "not needed".

Kind regards,
Petr

> Other than this LGTM.
> Reviewed-by: Petr Vorel <pvorel@suse.cz>

> Kind regards,
> Petr

> > +	} else {
> > +		tst_brk(TBROK | TTERRNO, "Unexpected error during probe");
> > +	}


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