Mateusz Jurczyk cfea0422a1 fuse: initialize the flock flag in fuse_file on allocation ...

commit 68227c03cb upstream.

Before the patch, the flock flag could remain uninitialized for the
lifespan of the fuse_file allocation. Unless set to true in
fuse_file_flock(), it would remain in an indeterminate state until read in
an if statement in fuse_release_common(). This could consequently lead to
taking an unexpected branch in the code.

The bug was discovered by a runtime instrumentation designed to detect use
of uninitialized memory in the kernel.

Signed-off-by: Mateusz Jurczyk <mjurczyk@google.com>
Fixes: 37fb3a30b4 ("fuse: fix flock")
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-08-16 13:46:51 -07:00

..

acl.c

fuse: Add posix ACL support

2016-10-01 07:32:32 +02:00

control.c

fs: constify tree_descr arrays passed to simple_fill_super()

2017-04-26 23:54:06 -04:00

cuse.c

fuse: Add reference counting for fuse_io_priv

2016-03-14 15:02:51 +01:00

dev.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

2017-05-10 08:45:30 -07:00

dir.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

2017-03-03 12:14:13 -08:00

file.c

fuse: initialize the flock flag in fuse_file on allocation

2017-08-16 13:46:51 -07:00

fuse_i.h

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

2017-05-10 08:45:30 -07:00

inode.c

Merge branch 'for-linus' of git://git.kernel.dk/linux-block

2017-05-20 16:12:30 -07:00

Kconfig

fuse: Add posix ACL support

2016-10-01 07:32:32 +02:00

Makefile

fuse: Use generic xattr ops

2016-10-01 07:32:32 +02:00

xattr.c

fuse: limit xattr returned size

2016-10-03 11:06:05 +02:00