From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <4BFF6566.1070000@bouyapop.org>
Date: Fri, 28 May 2010 08:40:38 +0200
From: Philippe Anel <xigh@bouyapop.org>
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To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
References: <AANLkTik6dc_WGvObAH_fWSdnHuDY8hBM0ElT5Yw7bzl4@mail.gmail.com>
In-Reply-To: <AANLkTik6dc_WGvObAH_fWSdnHuDY8hBM0ElT5Yw7bzl4@mail.gmail.com>
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Subject: Re: [9fans] crashing 9vx
Topicbox-Message-UUID: 2bdf63ee-ead6-11e9-9d60-3106f5b1d025

Could not crash with your program, but it crashed quite fast with this one:


#include <u.h>
#include <libc.h>
#include <thread.h>

enum {
    NPROC=10,
};

void
crproc(void * p)
{
    int i = (int)p;

    while (1) {
        int fd;
        char *name = smprint("/tmp/%d", i);
        fd = create(name, OWRITE, 0666);
        if (fd < 0) exits(nil);
        // free(name);
        close(fd);
        i += NPROC;
    }
}

void
threadmain(int, char**)
{
    for (int n = 0; n < NPROC-1; n++)
        proccreate(crproc, (void *)n, 4096);
    crproc((void *) (NPROC-1));
}


ron minnich wrote:
> I'm trying to create a reproducer. This little gem does crash it
> frequently. Note that tar and mk install are doing lots of creates too
> -- you're welcome to try this.
>
> term% cat lotsafiles.c
> #include <u.h>
> #include <libc.h>
>
> void
> main(int, char**)
> {
> 	int i = 0;
> 	while (1) {
> 		int fd;
> 		char *name = smprint("/tmp/%d", i);
> 		fd = create(name, OWRITE, 0666);
> 		if (fd < 0) exits(nil);
> 		close(fd);
> 		i++;
> 	}
> }
>
>
>