Date: Sun, 4 May 1997 09:34:50 -0600 (MDT) From: Steve Bauer <sbauer@rock.sdsmt.edu> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/3494: memory allocation error in threaded file descriptor table for in uthead_init.c Message-ID: <199705041534.JAA00639@rock.sdsmt.edu> Resent-Message-ID: <199705041550.IAA00434@hub.freebsd.org>
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>Number: 3494
>Category: kern
>Synopsis: memory allocation error in libc_r -- uthread_init.c
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun May 4 08:50:01 PDT 1997
>Last-Modified:
>Originator: Steve Bauer
>Organization:
South Dakota School of Mines and Technology
>Release: FreeBSD 2.2-STABLE i386
>Environment:
The machine is currently running FreeBSD 2.2-Stable with ctm
patch 0263 applied.
>Description:
There is an error in the way that the memory is allocated for the
file descriptor table in the thread library libc_r. The error is in the
file uthread_init.c at line 172.
What is happening is that instead of allocating an array of pointers to
struct fd_table_entry it is allocating an array of stuct fd_table_entry. This
does not cause a problem except that it wastes memory.
>How-To-Repeat:
This doesn't cause a major problem except to waste memory.
>Fix:
Below is a context diff that fixes the problem:
*** uthread_init.c.orig Mon Apr 28 22:29:03 1997
--- uthread_init.c Sun May 4 09:21:12 1997
***************
*** 169,175 ****
PANIC("Cannot get dtablesize");
}
/* Allocate memory for the file descriptor table: */
! if ((_thread_fd_table = (struct fd_table_entry **) malloc(sizeof(struct fd_table_entry) * _thread_dtablesize)) == NULL) {
/*
* Cannot allocate memory for the file descriptor
* table, so abort this process.
--- 169,175 ----
PANIC("Cannot get dtablesize");
}
/* Allocate memory for the file descriptor table: */
! if ((_thread_fd_table = (struct fd_table_entry **) malloc(sizeof(struct fd_table_entry *) * _thread_dtablesize)) == NULL) {
/*
* Cannot allocate memory for the file descriptor
* table, so abort this process.
>Audit-Trail:
>Unformatted:
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