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Deal with NULL file pointer for KTROP_CLEAR

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sommerfeld 2000-05-28 15:27:51 +00:00
parent 5b3cb6b1a1
commit a56cb94b43
1 changed files with 5 additions and 4 deletions
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9
sys/kern/kern_ktrace.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_ktrace.c,v 1.42 2000/05/27 00:40:45 sommerfeld Exp $ */
/* $NetBSD: kern_ktrace.c,v 1.43 2000/05/28 15:27:51 sommerfeld Exp $ */
/*
* Copyright (c) 1989, 1993
@ -326,9 +326,10 @@ ktrace_common (curp, ops, facs, pid, fp)
* Mark fp non-blocking, to avoid problems from possible deadlocks.
*/
fp->f_flag |= FNONBLOCK;
(*fp->f_ops->fo_ioctl)(fp, FIONBIO, (caddr_t)&one, curp);
if (fp != NULL) {
fp->f_flag |= FNONBLOCK;
(*fp->f_ops->fo_ioctl)(fp, FIONBIO, (caddr_t)&one, curp);
}
/*
* need something to (un)trace (XXX - why is this here?)