[patch] bug fix: tss->io_bitmap_owner is never set to non-NULL.

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1 total messages Started by Bart Oldeman Sat, 17 Sep 2005 22:44

#307658

Author: Bart Oldeman
Date: Sat, 17 Sep 2005 22:44

18 lines
637 bytes

Hi,

it appears that there is exists a field io_bitmap_owner in the TSS that is
only checked, but never set to anything else but NULL.

The below patch corrects this.

Signed-off-by: Bart Oldeman <bartoldeman@users.sourceforge.net>

--- arch/i386/kernel/traps.c.org	2005-09-17 17:20:19.000000000 +1200
+++ arch/i386/kernel/traps.c	2005-09-17 22:33:00.000000000 +1200
@@ -489,6 +489,7 @@ fastcall void __kprobes do_general_prote
  				tss->io_bitmap_max - thread->io_bitmap_max);
  		tss->io_bitmap_max = thread->io_bitmap_max;
  		tss->io_bitmap_base = IO_BITMAP_OFFSET;
+		tss->io_bitmap_owner = thread;
  		put_cpu();
  		return;
  	}

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