t5541: Bad file descriptor

I haven't had a lot of time to track down it down until today, but I've been getting failures in t5541-http-push-.sh.  Several tests fail with the error "fatal: write error: Bad file descriptor".

I have bisected this to "73776dc: Merge branch 'js/maint-1.6.6-send-pack-stateless-rpc-deadlock-fix' into js/maint-send-pack-stateless-rpc-deadlock-fix"

Full test output follows:

$ ./t5541-http-push.sh -v
Initialized empty Git repository in /Users/brian/dev/git/t/trash directory.t5541-http-push/.git/
expecting success: 
	cd "$ROOT_PATH" &&
	mkdir test_repo &&
	cd test_repo &&
	git init &&
	: >path1 &&
	git add path1 &&
	test_tick &&
	git commit -m initial &&
	cd - &&
	git clone --bare test_repo test_repo.git &&
	cd test_repo.git &&
	git config http.receivepack true &&
	ORIG_HEAD=$(git rev-parse --verify HEAD) &&
	cd - &&
	mv test_repo.git "$HTTPD_DOCUMENT_ROOT_PATH"

Initialized empty Git repository in /Users/brian/dev/git/t/trash directory.t5541-http-push/test_repo/.git/
[master (root-commit) 0c973ae] initial
 Author: A U Thor <author@example.com>
 0 files changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 path1
/Users/brian/dev/git/t/trash directory.t5541-http-push
Cloning into bare repository test_repo.git...
done.
/Users/brian/dev/git/t/trash directory.t5541-http-push
ok 1 - setup remote repository

expecting success: 
	# In the URL, add a trailing slash, and see if git appends yet another
	# slash.
	cd "$ROOT_PATH" &&
	git clone $HTTPD_URL/smart/test_repo.git/ test_repo_clone &&

	sed -e "
		s/^.* \"//
		s/\"//
		s/ [1-9][0-9]*\$//
		s/^GET /GET  /
	" >act <"$HTTPD_ROOT_PATH"/access.log &&

	# Clear the log, so that it does not affect the "used receive-pack
	# service" test which reads the log too.
	#
	# We do this before the actual comparison to ensure the log is cleared.
	echo > "$HTTPD_ROOT_PATH"/access.log &&

	test_cmp exp act

Cloning into test_repo_clone... remote: Counting objects: 3, done. remote: Total 3 (delta 0), reused 0 (delta 0) Unpacking objects: 100% (3/3), done. ok 2 - no empty path components

expecting success: 
	rm -rf test_repo_clone &&
	git clone $HTTPD_URL/smart/test_repo.git test_repo_clone

Cloning into test_repo_clone... remote: Counting objects: 3, done. remote: Total 3 (delta 0), reused 0 (delta 0) Unpacking objects: 100% (3/3), done. ok 3 - clone remote repository

expecting success: 
	cd "$ROOT_PATH"/test_repo_clone &&
	: >path2 &&
	git add path2 &&
	test_tick &&
	git commit -m path2 &&
	HEAD=$(git rev-parse --verify HEAD) &&
	git push &&
	(cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
	 test $HEAD = $(git rev-parse --verify HEAD))

[master 9d498b0] path2
 Author: A U Thor <author@example.com>
 0 files changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 path2
Counting objects: 3, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (2/2), done.
Writing objects: 100% (2/2), 240 bytes, done.
Total 2 (delta 0), reused 0 (delta 0)
fatal: write error: Bad file descriptor
fatal: The remote end hung up unexpectedly
not ok - 4 push to remote repository
#	
#		cd "$ROOT_PATH"/test_repo_clone &&
#		: >path2 &&
#		git add path2 &&
#		test_tick &&
#		git commit -m path2 &&
#		HEAD=$(git rev-parse --verify HEAD) &&
#		git push &&
#		(cd "$HTTPD_DOCUMENT_ROOT_PATH"/test_repo.git &&
#		 test $HEAD = $(git rev-parse --verify HEAD))
#	

expecting success: 
	git push

Counting objects: 3, done. Delta compression using up to 2 threads. Compressing objects: 100% (2/2), done. Writing objects: 100% (2/2), 240 bytes, done. Total 2 (delta 0), reused 0 (delta 0) fatal: write error: Bad file descriptor fatal: The remote end hung up unexpectedly not ok - 5 push already up-to-date # # git push #

expecting success: 
	cd "$ROOT_PATH"/test_repo_clone &&
	git checkout -b dev &&
	: >path3 &&
	git add path3 &&
	test_tick &&
	git commit -m dev &&
	git push origin dev &&
	git push origin :dev &&
	test_must_fail git show-ref --verify refs/remotes/origin/dev

Switched to a new branch 'dev'
[dev 3ea4fbb] dev
 Author: A U Thor <author@example.com>
 0 files changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 path3
Counting objects: 5, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (4/4), done.
Writing objects: 100% (4/4), 414 bytes, done.
Total 4 (delta 1), reused 0 (delta 0)
fatal: The remote end hung up unexpectedly
fatal: write error: Bad file descriptor
not ok - 6 create and delete remote branch
#	
#		cd "$ROOT_PATH"/test_repo_clone &&
#		git checkout -b dev &&
#		: >path3 &&
#		git add path3 &&
#		test_tick &&
#		git commit -m dev &&
#		git push origin dev &&
#		git push origin :dev &&
#		test_must_fail git show-ref --verify refs/remotes/origin/dev
#	

expecting success: 
	sed -e "
		s/^.* \"//
		s/\"//
		s/ [1-9][0-9]*\$//
		s/^GET /GET  /
	" >act <"$HTTPD_ROOT_PATH"/access.log &&
	test_cmp exp act

--- exp 2011-05-05 04:48:00.000000000 +0000 +++ act 2011-05-05 04:48:00.000000000 +0000