-ml
-------- Original Message --------
Subject: 2.2.0: kernel strstr() is broken
Date: Wed, 20 Jan 1999 18:07:44 -0500
From: Mark Lord <mlord@pobox.com>
Organization: Real-Time Remedies Inc.
To: Linus Torvalds <torvalds@transmeta.com>
CC: kernel <linux-kernel@vger.rutgers.edu>,Alan Cox
<alan@lxorguk.ukuu.org.uk>
Hi.
The strstr() function appears to be broken for i386 with 2.2.0,
which in turn, breaks IOMEGA ATAPI ZIP drive detection in ide-probe.c
(which relies on a strstr() during the probe).
For example, this code (inserted into the kernel):
{
static int done = 0;
static char buf[64];
if (!done++) {
strcpy(buf,"This is a ZIP test");
printk("buf at %p: \"%s\"\n", buf, buf);
printk("strstr(buf,\"XXX\") gives %p\n",
strstr(buf,"XXX"));
printk("strstr(buf,\"Thi\") gives %p\n",
strstr(buf,"Thi"));
printk("strstr(buf,\"est\") gives %p\n",
strstr(buf,"est"));
printk("strstr(buf,\"ZIP\") gives %p\n",
strstr(buf,"ZIP"));
}
}
gives this output:
Jan 20 18:02:21 foxy kernel: buf at c026de20: "This is a ZIP test"
Jan 20 18:02:21 foxy kernel: strstr(buf,"XXX") gives c026de20
Jan 20 18:02:21 foxy kernel: strstr(buf,"Thi") gives c026de20
Jan 20 18:02:21 foxy kernel: strstr(buf,"est") gives c026de20
Jan 20 18:02:21 foxy kernel: strstr(buf,"ZIP") gives c026de20
strstr() is broken.
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