Re: [Qemu-devel] [PATCH v2 0/4] 9pfs: local: fix metadata of mapped-file security mode

[Greg Kurz]

On Tue, 23 May 2017 07:47:09 -0700 (PDT)
address@hidden wrote:

> Hi,
> 
> This series failed build test on s390x host. Please find the details below.
> 
> Message-id: address@hidden
> Type: series
> Subject: [Qemu-devel] [PATCH v2 0/4] 9pfs: local: fix metadata of mapped-file 
> security mode
> 
> === TEST SCRIPT BEGIN ===
> #!/bin/bash
> # Testing script will be invoked under the git checkout with
> # HEAD pointing to a commit that has the patches applied on top of "base"
> # branch
> set -e
> echo "=== ENV ==="
> env
> echo "=== PACKAGES ==="
> rpm -qa
> echo "=== TEST BEGIN ==="
> CC=$HOME/bin/cc
> INSTALL=$PWD/install
> BUILD=$PWD/build
> echo -n "Using CC: "
> realpath $CC
> mkdir -p $BUILD $INSTALL
> SRC=$PWD
> cd $BUILD
> $SRC/configure --cc=$CC --prefix=$INSTALL
> make -j4
> # XXX: we need reliable clean up
> # make check -j4 V=1
> make install
> === TEST SCRIPT END ===
> 
> Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384
[...]
>   CC      hw/9pfs/9p-xattr-user.o
> In file included from 
> /var/tmp/patchew-tester-tmp-5niyvzwz/src/hw/9pfs/9p-local.c:18:0:
> /var/tmp/patchew-tester-tmp-5niyvzwz/src/hw/9pfs/9p-local.c: In function 
> ‘local_set_mapped_file_attrat’:
> /var/tmp/patchew-tester-tmp-5niyvzwz/src/hw/9pfs/9p-util.h:19:5: error: 
> ‘map_dirfd’ may be used uninitialized in this function 
> [-Werror=maybe-uninitialized]
>      close(fd);
>      ^~~~~~~~~
> /var/tmp/patchew-tester-tmp-5niyvzwz/src/hw/9pfs/9p-local.c:235:9: note: 
> ‘map_dirfd’ was declared here
>      int map_dirfd, map_fd;
>          ^~~~~~~~~
> cc1: all warnings being treated as errors

This is a false positive AFAICT... what compiler is this ?

> /var/tmp/patchew-tester-tmp-5niyvzwz/src/rules.mak:69: recipe for target 
> 'hw/9pfs/9p-local.o' failed
> make: *** [hw/9pfs/9p-local.o] Error 1
> make: *** Waiting for unfinished jobs....
>   CC      hw/9pfs/9p-posix-acl.o
> === OUTPUT END ===
> 
> Test command exited with code: 2
> 
> 
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