On Fri, May 09, 2014 at 12:08:10PM +0200, Peter Krempa wrote: > The docs for glfs_init suggest that the function sets errno on every > failure. In fact it doesn't. As other functions such as > qemu_gluster_open() in the gluster block code report their errors based > on this fact we need to make sure that errno is set on each failure. > > This fixes a crash of qemu-img/qemu when a gluster brick isn't > accessible from given host while the server serving the volume > description is. > > Thread 1 (Thread 0x7ffff7fba740 (LWP 203880)): > #0 0x00007ffff77673f8 in glfs_lseek () from /usr/lib64/libgfapi.so.0 > #1 0x0000555555574a68 in qemu_gluster_getlength () > #2 0x0000555555565742 in refresh_total_sectors () > #3 0x000055555556914f in bdrv_open_common () > #4 0x000055555556e8e8 in bdrv_open () > #5 0x000055555556f02f in bdrv_open_image () > #6 0x000055555556e5f6 in bdrv_open () > #7 0x00005555555c5775 in bdrv_new_open () > #8 0x00005555555c5b91 in img_info () > #9 0x00007ffff62c9c05 in __libc_start_main () from /lib64/libc.so.6 > #10 0x00005555555648ad in _start () > --- > > Notes: > I'm also going to report a bug in libgfapi too. > > block/gluster.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-)
Please use scripts/checkpatch.pl to check coding style in the future. I added {} around the if statement body. QEMU always uses curlies even for 1-statement bodies. Thanks, applied to my block tree: https://github.com/stefanha/qemu/commits/block Stefan