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List:       bash-bug
Subject:    Bash-4.0 Official Patch 38
From:       Chet Ramey <chet.ramey () case ! edu>
Date:       2010-03-20 21:50:03
Message-ID: 100320215003.AA11866.SM () caleb ! INS ! CWRU ! Edu
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			     BASH PATCH REPORT
			     =================

Bash-Release:	4.0
Patch-ID:	bash40-038

Bug-Reported-by:	werner@suse.de
Bug-Reference-ID:	<201002251238.o1PCcYcg016893@boole.suse.de>
Bug-Reference-URL:	http://lists.gnu.org/archive/html/bug-bash/2010-02/msg00132.html

Bug-Description:

When the `read' builtin times out after the timeout specified with -t is
exceeded, it does not reset the flags that tell signal handlers to process
signals immediately instead of deferring their handling.  This can result
in unsafe functions being called from signal handlers, which can cause bash
to hang or dump core.

Patch (apply with `patch -p0'):

*** ../bash-4.0-patched/builtins/read.def	2009-09-03 14:40:03.000000000 -0400
--- builtins/read.def	2010-03-17 17:35:39.000000000 -0400
***************
*** 602,607 ****
      zsyncfd (fd);
  
-   interrupt_immediately--;
-   terminate_immediately--;
    discard_unwind_frame ("read_builtin");
  
--- 616,619 ----
***************
*** 610,613 ****
--- 622,628 ----
  assign_vars:
  
+   interrupt_immediately--;
+   terminate_immediately--;
+ 
  #if defined (ARRAY_VARS)
    /* If -a was given, take the string read, break it into a list of words,
*** ../bash-4.0/patchlevel.h	2009-01-04 14:32:40.000000000 -0500
--- patchlevel.h	2009-02-22 16:11:31.000000000 -0500
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 37
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 38
  
  #endif /* _PATCHLEVEL_H_ */

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
		 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/



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