PR/56422 CVS commit: src/sys/kern

["Juergen Hannken-Illjes" <hannken%netbsd.org@localhost>]

The following reply was made to PR bin/56422; it has been noted by GNATS.

From: "Juergen Hannken-Illjes" <hannken%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/56422 CVS commit: src/sys/kern
Date: Sat, 2 Oct 2021 07:35:41 +0000

 Module Name:	src
 Committed By:	hannken
 Date:		Sat Oct  2 07:35:41 UTC 2021
 
 Modified Files:
 	src/sys/kern: sys_pipe.c
 
 Log Message:
 Fix a deadlock where one thread writes to a pipe, has more data
 and no space in the pipe and waits on "pipe_wcv" while the reader
 is closing the pipe and waits on "pipe_draincv".
 
 Swap the test for "PIPE_EOF" and the "cv_wait_sig()" in "pipe_write()".
 
 PR bin/56422 "zgrep -l sometimes hangs"
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.156 -r1.157 src/sys/kern/sys_pipe.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.