wrapfs-3.0.y.git
3 years agoWrapfs: add ->bmap support wrapfs
Erez Zadok [Fri, 13 May 2022 23:41:51 +0000 (19:41 -0400)]
Wrapfs: add ->bmap support

Signed-off-by: Aditya Sonavane <aditya.sonavane@stonybrook.edu>
Signed-off-by: Erez Zadok <ezk@cs.stonybrook.edu>
3 years agowrapfs: copyright year update
Erez Zadok [Sat, 7 May 2022 22:11:53 +0000 (18:11 -0400)]
wrapfs: copyright year update

3 years agowrapfs: change http URLs to https
Erez Zadok [Sat, 7 May 2022 20:47:57 +0000 (16:47 -0400)]
wrapfs: change http URLs to https

5 years agomerge changes
Erez Zadok [Sun, 15 Dec 2019 23:59:37 +0000 (18:59 -0500)]
merge changes

5 years agowrapfs: update copyright
Erez Zadok [Sat, 14 Dec 2019 05:05:20 +0000 (00:05 -0500)]
wrapfs: update copyright

5 years agowrapfs: remove unused variable
Erez Zadok [Sat, 14 Dec 2019 04:20:30 +0000 (23:20 -0500)]
wrapfs: remove unused variable

6 years agoupdate copyright
Erez Zadok [Fri, 29 Mar 2019 20:45:24 +0000 (16:45 -0400)]
update copyright

6 years agofix spell error
Erez Zadok [Fri, 29 Mar 2019 20:38:57 +0000 (16:38 -0400)]
fix spell error

8 years agoWrapfs: ->iget fixes
Erez Zadok [Sun, 19 Feb 2017 00:11:22 +0000 (19:11 -0500)]
Wrapfs: ->iget fixes

Change where we igrab/iput to ensure we always hold a valid lower_inode.
Return ENOMEM (not EACCES) if iget5_locked returns NULL.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
8 years agoWrapfs: update copyrights for 2017
Erez Zadok [Sat, 18 Feb 2017 20:17:57 +0000 (15:17 -0500)]
Wrapfs: update copyrights for 2017

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
9 years agoWrapfs: update nlinks after rename
Erez Zadok [Mon, 14 Dec 2015 23:44:14 +0000 (18:44 -0500)]
Wrapfs: update nlinks after rename

Signed-off-by: Logeswari P Viswanath <logeswari.pv@hpe.com>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
10 years agoWrapfs: update copyright year to 2015
Erez Zadok [Wed, 4 Nov 2015 06:53:44 +0000 (01:53 -0500)]
Wrapfs: update copyright year to 2015

10 years agoWrapfs: use vfs xattr helpers
Erez Zadok [Wed, 4 Nov 2015 06:53:44 +0000 (01:53 -0500)]
Wrapfs: use vfs xattr helpers

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
11 years agoWrapfs: properly copy meta-data after AIO operations from lower inode
Erez Zadok [Sat, 16 Aug 2014 03:28:57 +0000 (23:28 -0400)]
Wrapfs: properly copy meta-data after AIO operations from lower inode

Signed-off-by: Mengyang Li <li.mengyang@stonybrook.edu>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
11 years agoWrapfs: leave placeholders for updating upper inode after AIO
Erez Zadok [Mon, 11 Aug 2014 23:09:25 +0000 (19:09 -0400)]
Wrapfs: leave placeholders for updating upper inode after AIO

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
11 years agoWrapfs: protect lower_file by ref-count during aio operation
Erez Zadok [Sun, 10 Aug 2014 07:21:42 +0000 (03:21 -0400)]
Wrapfs: protect lower_file by ref-count during aio operation

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Mengyang Li <li.mengyang@stonybrook.edu>
11 years agoWrapfs: fix ->llseek to update upper and lower offsets
Erez Zadok [Thu, 26 Jun 2014 03:32:04 +0000 (23:32 -0400)]
Wrapfs: fix ->llseek to update upper and lower offsets

Fixes bug: xfstests generic/257. f_pos consistently is required by and
only by dir_ops->wrapfs_readdir, main_ops is not affected.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Mengyang Li <li.mengyang@stonybrook.edu>
11 years ago Wrapfs: support extended attributes (xattr) operations
Erez Zadok [Thu, 26 Jun 2014 03:32:04 +0000 (23:32 -0400)]
 Wrapfs: support extended attributes (xattr) operations

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Mengyang Li <li.mengyang@stonybrook.edu>
11 years agoWrapfs: support asynchronous-IO (AIO) operations
Erez Zadok [Sat, 21 Jun 2014 00:35:01 +0000 (20:35 -0400)]
Wrapfs: support asynchronous-IO (AIO) operations

Signed-off-by: Li Mengyang <li.mengyang@stonybrook.edu>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
11 years agoWrapfs: support direct-IO (DIO) operations
Erez Zadok [Sat, 21 Jun 2014 00:35:01 +0000 (20:35 -0400)]
Wrapfs: support direct-IO (DIO) operations

Signed-off-by: Li Mengyang <li.mengyang@stonybrook.edu>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
11 years agoWrapfs: implement vm_ops->page_mkwrite
Erez Zadok [Thu, 15 May 2014 04:15:58 +0000 (00:15 -0400)]
Wrapfs: implement vm_ops->page_mkwrite

Some file systems (e.g., ext4) require it.  Reported by Ted Ts'o.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
11 years agoWrapfs: update documentation
Erez Zadok [Thu, 3 Apr 2014 18:00:21 +0000 (14:00 -0400)]
Wrapfs: update documentation

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
11 years agoWrapfs: update maintainers
Erez Zadok [Thu, 3 Apr 2014 18:00:19 +0000 (14:00 -0400)]
Wrapfs: update maintainers

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
11 years agoWrapfs: update documentation
Erez Zadok [Tue, 21 Jan 2014 08:17:51 +0000 (03:17 -0500)]
Wrapfs: update documentation

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
11 years agoWrapfs: 2014 Copyright update
Erez Zadok [Tue, 21 Jan 2014 06:14:36 +0000 (01:14 -0500)]
Wrapfs: 2014 Copyright update

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: copy lower inode attributes in ->ioctl
Erez Zadok [Wed, 5 Jun 2013 05:44:26 +0000 (01:44 -0400)]
Wrapfs: copy lower inode attributes in ->ioctl

Some ioctls (e.g., EXT2_IOC_SETFLAGS) can change inode attributes, so copy
them from lower inode.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: remove unnecessary call to vm_unmap in ->mmap
Erez Zadok [Wed, 5 Jun 2013 05:43:26 +0000 (01:43 -0400)]
Wrapfs: remove unnecessary call to vm_unmap in ->mmap

Code is unnecessary and causes deadlocks in newer kernels.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agopatch copyright-2013.patch
Erez Zadok [Mon, 3 Jun 2013 01:54:41 +0000 (21:54 -0400)]
patch copyright-2013.patch

12 years agopatch wrapfs-drop-dentry-in-rmdir.patch
Erez Zadok [Fri, 9 Sep 2011 04:29:56 +0000 (00:29 -0400)]
patch wrapfs-drop-dentry-in-rmdir.patch

12 years agoWrapfs: use d_set_d_op
Erez Zadok [Tue, 6 Sep 2011 04:03:32 +0000 (00:03 -0400)]
Wrapfs: use d_set_d_op

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: support LOOKUP_RCU in ->d_revalidate
Erez Zadok [Tue, 6 Sep 2011 04:03:31 +0000 (00:03 -0400)]
Wrapfs: support LOOKUP_RCU in ->d_revalidate

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: lookup fixes
Erez Zadok [Mon, 2 May 2011 06:00:02 +0000 (02:00 -0400)]
Wrapfs: lookup fixes

Don't use lookup_one_len any longer (doesn't work for NFS).
Initialize lower wrapfs_dentry_info so lower_path is NULL.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: remove extra debug in rmdir
Erez Zadok [Fri, 18 Mar 2011 17:14:28 +0000 (13:14 -0400)]
Wrapfs: remove extra debug in rmdir

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: checkpatch fixes
Erez Zadok [Fri, 18 Mar 2011 16:38:01 +0000 (12:38 -0400)]
Wrapfs: checkpatch fixes

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: port to 2.6.39
Erez Zadok [Fri, 18 Mar 2011 04:45:17 +0000 (00:45 -0400)]
Wrapfs: port to 2.6.39

Remove lock/unlock_kernel in ->fasync.
Convert from ->get_sb to ->mount op.
Remove include to smp_lock.h, added sched.h.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: copyright update for 2011
Erez Zadok [Fri, 18 Mar 2011 03:21:55 +0000 (23:21 -0400)]
Wrapfs: copyright update for 2011

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: better handling of NFS silly-renamed files
Erez Zadok [Fri, 18 Mar 2011 03:21:55 +0000 (23:21 -0400)]
Wrapfs: better handling of NFS silly-renamed files

In ->unlink, if we try to unlink an NFS silly-renamed file, NFS returns
-EBUSY.  We have to treat it as a success and return 0 to the VFS.  NFS will
remove silly-deleted files later on anyway.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: update parent directory inode size in inode ops
Erez Zadok [Fri, 18 Mar 2011 03:21:55 +0000 (23:21 -0400)]
Wrapfs: update parent directory inode size in inode ops

After ->unlink, ->rmdir, and ->rename, we need to copy the (possibly
changed) inode size of the parent directory(ies) where the operation took
place.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: remove unnecessary calls to copy lower inode->n_links
Erez Zadok [Fri, 18 Mar 2011 03:21:55 +0000 (23:21 -0400)]
Wrapfs: remove unnecessary calls to copy lower inode->n_links

Removed from ->create, ->symlink, and ->mknod.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: ->setattr fixes
Erez Zadok [Tue, 8 Mar 2011 04:20:33 +0000 (23:20 -0500)]
Wrapfs: ->setattr fixes

Call inode_change_ok on our inode, not lower.
Don't copy inode sizes (VFS does it).
Pass lower file in struct iattr passed to notify_change on lower inode.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: update ->permission prototye and code for new iperm flag
Erez Zadok [Sun, 6 Mar 2011 21:23:16 +0000 (16:23 -0500)]
Wrapfs: update ->permission prototye and code for new iperm flag

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: handle maxbytes properly
Erez Zadok [Fri, 12 Nov 2010 23:15:05 +0000 (18:15 -0500)]
Wrapfs: handle maxbytes properly

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: support ->unlocked_ioctl and ->compat_ioctl
Erez Zadok [Sat, 11 Sep 2010 19:49:33 +0000 (15:49 -0400)]
Wrapfs: support ->unlocked_ioctl and ->compat_ioctl

Old ->ioctl was split into ->unlocked_ioctl and ->compat_ioctl.  Compat
version doesn't need to lock_kernel any longer.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: new vfs_statfs and ->evict_inode prototypes
Erez Zadok [Wed, 11 Aug 2010 03:50:14 +0000 (23:50 -0400)]
Wrapfs: new vfs_statfs and ->evict_inode prototypes

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: update ->fsync prototype
Erez Zadok [Sat, 7 Aug 2010 03:37:29 +0000 (23:37 -0400)]
Wrapfs: update ->fsync prototype

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: update documentation
Erez Zadok [Wed, 21 Apr 2010 01:22:02 +0000 (21:22 -0400)]
Wrapfs: update documentation

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: include slab.h
Erez Zadok [Tue, 20 Apr 2010 19:32:09 +0000 (15:32 -0400)]
Wrapfs: include slab.h

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: avoid an extra path_get/put pair in wrapfs_open
Erez Zadok [Tue, 20 Apr 2010 19:26:02 +0000 (15:26 -0400)]
Wrapfs: avoid an extra path_get/put pair in wrapfs_open

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: decrement nd_path on follow_link error
Erez Zadok [Fri, 26 Feb 2010 08:18:04 +0000 (03:18 -0500)]
Wrapfs: decrement nd_path on follow_link error

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: don't mention kernel version in modload message
Erez Zadok [Tue, 5 Jan 2010 09:27:00 +0000 (04:27 -0500)]
Wrapfs: don't mention kernel version in modload message

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs/VFS: remove init_lower_nd and unexport release_lower_nd
Erez Zadok [Tue, 5 Jan 2010 09:28:11 +0000 (04:28 -0500)]
Wrapfs/VFS: remove init_lower_nd and unexport release_lower_nd

Only wrapfs_create used it, and it is unnecessary to init a completely new
nameidata for the lower file system.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoKconfig: hook to configure Wrapfs
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Kconfig: hook to configure Wrapfs

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoMakefile: hook to compile Wrapfs
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Makefile: hook to compile Wrapfs

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoVFS: export release_open_intent symbol
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
VFS: export release_open_intent symbol

Needed to release the resources of the lower nameidata structures that we
create and pass to lower file systems (e.g., when calling vfs_create).

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: file system magic number
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: file system magic number

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: Kconfig options
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: Kconfig options

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: main Makefile
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: main Makefile

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: vm_ops operations
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: vm_ops operations

Includes necessary address_space workaround ops.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: mount-time and module-linkage functions
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: mount-time and module-linkage functions

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: lookup-related functions
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: lookup-related functions

Main lookup function, nameidata helpers, and stacking-interposition
functions.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: file operations
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: file operations

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: dentry operations
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: dentry operations

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: inode operations
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: inode operations

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: superblock operations
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: superblock operations

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: main header file
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: main header file

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: Maintainers
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: Maintainers

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoDocumentation: index entry for Wrapfs
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Documentation: index entry for Wrapfs

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoWrapfs: introduction and usage documentation
Erez Zadok [Tue, 5 Jan 2010 01:45:06 +0000 (20:45 -0500)]
Wrapfs: introduction and usage documentation

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
12 years agoLinux 3.0.101 master v3.0.101
Greg Kroah-Hartman [Tue, 22 Oct 2013 07:58:59 +0000 (08:58 +0100)]
Linux 3.0.101

12 years agoipv6: tcp: fix panic in SYN processing
Eric Dumazet [Wed, 23 Nov 2011 20:49:31 +0000 (15:49 -0500)]
ipv6: tcp: fix panic in SYN processing

commit c16a98ed91597b40b22b540c6517103497ef8e74 upstream.

commit 72a3effaf633bc ([NET]: Size listen hash tables using backlog
hint) added a bug allowing inet6_synq_hash() to return an out of bound
array index, because of u16 overflow.

Bug can happen if system admins set net.core.somaxconn &
net.ipv4.tcp_max_syn_backlog sysctls to values greater than 65536

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agodrm/radeon: fix hw contexts for SUMO2 asics
wojciech kapuscinski [Tue, 1 Oct 2013 23:54:33 +0000 (19:54 -0400)]
drm/radeon: fix hw contexts for SUMO2 asics

commit 50b8f5aec04ebec7dbdf2adb17220b9148c99e63 upstream.

They have 4 rather than 8.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=63599

Signed-off-by: wojciech kapuscinski <wojtask9@wp.pl>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agowatchdog: ts72xx_wdt: locking bug in ioctl
Dan Carpenter [Fri, 23 Aug 2013 08:40:59 +0000 (11:40 +0300)]
watchdog: ts72xx_wdt: locking bug in ioctl

commit 8612ed0d97abcf1c016d34755b7cf2060de71963 upstream.

Calling the WDIOC_GETSTATUS & WDIOC_GETBOOTSTATUS and twice will cause a
interruptible deadlock.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoparisc: fix interruption handler to respect pagefault_disable()
Helge Deller [Tue, 1 Oct 2013 19:54:46 +0000 (21:54 +0200)]
parisc: fix interruption handler to respect pagefault_disable()

commit 59b33f148cc08fb33cbe823fca1e34f7f023765e upstream.

Running an "echo t > /proc/sysrq-trigger" crashes the parisc kernel.  The
problem is, that in print_worker_info() we try to read the workqueue info via
the probe_kernel_read() functions which use pagefault_disable() to avoid
crashes like this:
    probe_kernel_read(&pwq, &worker->current_pwq, sizeof(pwq));
    probe_kernel_read(&wq, &pwq->wq, sizeof(wq));
    probe_kernel_read(name, wq->name, sizeof(name) - 1);

The problem here is, that the first probe_kernel_read(&pwq) might return zero
in pwq and as such the following probe_kernel_reads() try to access contents of
the page zero which is read protected and generate a kernel segfault.

With this patch we fix the interruption handler to call parisc_terminate()
directly only if pagefault_disable() was not called (in which case
preempt_count()==0).  Otherwise we hand over to the pagefault handler which
will try to look up the faulting address in the fixup tables.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoext4: fix memory leak in xattr
Dave Jones [Fri, 11 Oct 2013 00:05:35 +0000 (20:05 -0400)]
ext4: fix memory leak in xattr

commit 6e4ea8e33b2057b85d75175dd89b93f5e26de3bc upstream.

If we take the 2nd retry path in ext4_expand_extra_isize_ea, we
potentionally return from the function without having freed these
allocations.  If we don't do the return, we over-write the previous
allocation pointers, so we leak either way.

Spotted with Coverity.

[ Fixed by tytso to set is and bs to NULL after freeing these
  pointers, in case in the retry loop we later end up triggering an
  error causing a jump to cleanup, at which point we could have a double
  free bug. -- Ted ]

Signed-off-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agovfs: allow O_PATH file descriptors for fstatfs()
Linus Torvalds [Mon, 30 Sep 2013 15:35:10 +0000 (08:35 -0700)]
vfs: allow O_PATH file descriptors for fstatfs()

commit 9d05746e7b16d8565dddbe3200faa1e669d23bbf upstream.

Olga reported that file descriptors opened with O_PATH do not work with
fstatfs(), found during further development of ksh93's thread support.

There is no reason to not allow O_PATH file descriptors here (fstatfs is
very much a path operation), so use "fdget_raw()".  See commit
55815f70147d ("vfs: make O_PATH file descriptors usable for 'fstat()'")
for a very similar issue reported for fstat() by the same team.

Reported-and-tested-by: ольга крыжановская <olga.kryzhanovska@gmail.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agorandom: run random_int_secret_init() run after all late_initcalls
Theodore Ts'o [Tue, 10 Sep 2013 14:52:35 +0000 (10:52 -0400)]
random: run random_int_secret_init() run after all late_initcalls

commit 47d06e532e95b71c0db3839ebdef3fe8812fca2c upstream.

The some platforms (e.g., ARM) initializes their clocks as
late_initcalls for some unknown reason.  So make sure
random_int_secret_init() is run after all of the late_initcalls are
run.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoLinux 3.0.100 v3.0.100
Greg Kroah-Hartman [Sun, 13 Oct 2013 22:07:28 +0000 (15:07 -0700)]
Linux 3.0.100

12 years agoTools: hv: verify origin of netlink connector message
Olaf Hering [Thu, 31 May 2012 14:40:06 +0000 (16:40 +0200)]
Tools: hv: verify origin of netlink connector message

commit bcc2c9c3fff859e0eb019fe6fec26f9b8eba795c upstream.

The SuSE security team suggested to use recvfrom instead of recv to be
certain that the connector message is originated from kernel.

CVE-2012-2669

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Marcus Meissner <meissner@suse.de>
Signed-off-by: Sebastian Krahmer <krahmer@suse.de>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
12 years agotg3: fix length overflow in VPD firmware parsing
Kees Cook [Wed, 27 Mar 2013 06:40:50 +0000 (06:40 +0000)]
tg3: fix length overflow in VPD firmware parsing

commit 715230a44310a8cf66fbfb5a46f9a62a9b2de424 upstream.

Commit 184b89044fb6e2a74611dafa69b1dce0d98612c6 ("tg3: Use VPD fw version
when present") introduced VPD parsing that contained a potential length
overflow.

Limit the hardware's reported firmware string length (max 255 bytes) to
stay inside the driver's firmware string length (32 bytes). On overflow,
truncate the formatted firmware string instead of potentially overwriting
portions of the tg3 struct.

http://cansecwest.com/slides/2013/PrivateCore%20CSW%202013.pdf

-js: This fixes CVE-2013-1929.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reported-by: Oded Horovitz <oded@privatecore.com>
Reported-by: Brad Spengler <spender@grsecurity.net>
Cc: stable@vger.kernel.org
Cc: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoext4: avoid hang when mounting non-journal filesystems with orphan list
Theodore Ts'o [Thu, 27 Dec 2012 06:42:50 +0000 (01:42 -0500)]
ext4: avoid hang when mounting non-journal filesystems with orphan list

commit 0e9a9a1ad619e7e987815d20262d36a2f95717ca upstream.

When trying to mount a file system which does not contain a journal,
but which does have a orphan list containing an inode which needs to
be truncated, the mount call with hang forever in
ext4_orphan_cleanup() because ext4_orphan_del() will return
immediately without removing the inode from the orphan list, leading
to an uninterruptible loop in kernel code which will busy out one of
the CPU's on the system.

This can be trivially reproduced by trying to mount the file system
found in tests/f_orphan_extents_inode/image.gz from the e2fsprogs
source tree.  If a malicious user were to put this on a USB stick, and
mount it on a Linux desktop which has automatic mounts enabled, this
could be considered a potential denial of service attack.  (Not a big
deal in practice, but professional paranoids worry about such things,
and have even been known to allocate CVE numbers for such problems.)

-js: This is a fix for CVE-2013-2015.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoBtrfs: change how we queue blocks for backref checking
Josef Bacik [Tue, 30 Jul 2013 20:30:30 +0000 (16:30 -0400)]
Btrfs: change how we queue blocks for backref checking

commit b6c60c8018c4e9beb2f83fc82c09f9d033766571 upstream.

Previously we only added blocks to the list to have their backrefs checked if
the level of the block is right above the one we are searching for.  This is
because we want to make sure we don't add the entire path up to the root to the
lists to make sure we process things one at a time.  This assumes that if any
blocks in the path to the root are going to be not checked (shared in other
words) then they will be in the level right above the current block on up.  This
isn't quite right though since we can have blocks higher up the list that are
shared because they are attached to a reloc root.  But we won't add this block
to be checked and then later on we will BUG_ON(!upper->checked).  So instead
keep track of wether or not we've queued a block to be checked in this current
search, and if we haven't go ahead and queue it to be checked.  This patch fixed
the panic I was seeing where we BUG_ON(!upper->checked).  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agotile: use a more conservative __my_cpu_offset in CONFIG_PREEMPT
Chris Metcalf [Thu, 26 Sep 2013 17:24:53 +0000 (13:24 -0400)]
tile: use a more conservative __my_cpu_offset in CONFIG_PREEMPT

commit f862eefec0b68e099a9fa58d3761ffb10bad97e1 upstream.

It turns out the kernel relies on barrier() to force a reload of the
percpu offset value.  Since we can't easily modify the definition of
barrier() to include "tp" as an output register, we instead provide a
definition of __my_cpu_offset as extended assembly that includes a fake
stack read to hazard against barrier(), forcing gcc to know that it
must reread "tp" and recompute anything based on "tp" after a barrier.

This fixes observed hangs in the slub allocator when we are looping
on a percpu cmpxchg_double.

A similar fix for ARMv7 was made in June in change 509eb76ebf97.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoACPI / IPMI: Fix atomic context requirement of ipmi_msg_handler()
Lv Zheng [Fri, 13 Sep 2013 05:13:23 +0000 (13:13 +0800)]
ACPI / IPMI: Fix atomic context requirement of ipmi_msg_handler()

commit 06a8566bcf5cf7db9843a82cde7a33c7bf3947d9 upstream.

This patch fixes the issues indicated by the test results that
ipmi_msg_handler() is invoked in atomic context.

BUG: scheduling while atomic: kipmi0/18933/0x10000100
Modules linked in: ipmi_si acpi_ipmi ...
CPU: 3 PID: 18933 Comm: kipmi0 Tainted: G       AW    3.10.0-rc7+ #2
Hardware name: QCI QSSC-S4R/QSSC-S4R, BIOS QSSC-S4R.QCI.01.00.0027.070120100606 07/01/2010
 ffff8838245eea00 ffff88103fc63c98 ffffffff814c4a1e ffff88103fc63ca8
 ffffffff814bfbab ffff88103fc63d28 ffffffff814c73e0 ffff88103933cbd4
 0000000000000096 ffff88103fc63ce8 ffff88102f618000 ffff881035c01fd8
Call Trace:
 <IRQ>  [<ffffffff814c4a1e>] dump_stack+0x19/0x1b
 [<ffffffff814bfbab>] __schedule_bug+0x46/0x54
 [<ffffffff814c73e0>] __schedule+0x83/0x59c
 [<ffffffff81058853>] __cond_resched+0x22/0x2d
 [<ffffffff814c794b>] _cond_resched+0x14/0x1d
 [<ffffffff814c6d82>] mutex_lock+0x11/0x32
 [<ffffffff8101e1e9>] ? __default_send_IPI_dest_field.constprop.0+0x53/0x58
 [<ffffffffa09e3f9c>] ipmi_msg_handler+0x23/0x166 [ipmi_si]
 [<ffffffff812bf6e4>] deliver_response+0x55/0x5a
 [<ffffffff812c0fd4>] handle_new_recv_msgs+0xb67/0xc65
 [<ffffffff81007ad1>] ? read_tsc+0x9/0x19
 [<ffffffff814c8620>] ? _raw_spin_lock_irq+0xa/0xc
 [<ffffffffa09e1128>] ipmi_thread+0x5c/0x146 [ipmi_si]
 ...

Also Tony Camuso says:

 We were getting occasional "Scheduling while atomic" call traces
 during boot on some systems. Problem was first seen on a Cisco C210
 but we were able to reproduce it on a Cisco c220m3. Setting
 CONFIG_LOCKDEP and LOCKDEP_SUPPORT to 'y' exposed a lockdep around
 tx_msg_lock in acpi_ipmi.c struct acpi_ipmi_device.

 =================================
 [ INFO: inconsistent lock state ]
 2.6.32-415.el6.x86_64-debug-splck #1
 ---------------------------------
 inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
 ksoftirqd/3/17 [HC0[0]:SC1[1]:HE1:SE0] takes:
  (&ipmi_device->tx_msg_lock){+.?...}, at: [<ffffffff81337a27>] ipmi_msg_handler+0x71/0x126
 {SOFTIRQ-ON-W} state was registered at:
   [<ffffffff810ba11c>] __lock_acquire+0x63c/0x1570
   [<ffffffff810bb0f4>] lock_acquire+0xa4/0x120
   [<ffffffff815581cc>] __mutex_lock_common+0x4c/0x400
   [<ffffffff815586ea>] mutex_lock_nested+0x4a/0x60
   [<ffffffff8133789d>] acpi_ipmi_space_handler+0x11b/0x234
   [<ffffffff81321c62>] acpi_ev_address_space_dispatch+0x170/0x1be

The fix implemented by this change has been tested by Tony:

 Tested the patch in a boot loop with lockdep debug enabled and never
 saw the problem in over 400 reboots.

Reported-and-tested-by: Tony Camuso <tcamuso@redhat.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reviewed-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agostaging: comedi: ni_65xx: (bug fix) confine insn_bits to one subdevice
Ian Abbott [Thu, 10 Oct 2013 09:53:46 +0000 (10:53 +0100)]
staging: comedi: ni_65xx: (bug fix) confine insn_bits to one subdevice

commit 677a31565692d596ef42ea589b53ba289abf4713 upstream.

The `insn_bits` handler `ni_65xx_dio_insn_bits()` has a `for` loop that
currently writes (optionally) and reads back up to 5 "ports" consisting
of 8 channels each.  It reads up to 32 1-bit channels but can only read
and write a whole port at once - it needs to handle up to 5 ports as the
first channel it reads might not be aligned on a port boundary.  It
breaks out of the loop early if the next port it handles is beyond the
final port on the card.  It also breaks out early on the 5th port in the
loop if the first channel was aligned.  Unfortunately, it doesn't check
that the current port it is dealing with belongs to the comedi subdevice
the `insn_bits` handler is acting on.  That's a bug.

Redo the `for` loop to terminate after the final port belonging to the
subdevice, changing the loop variable in the process to simplify things
a bit.  The `for` loop could now try and handle more than 5 ports if the
subdevice has more than 40 channels, but the test `if (bitshift >= 32)`
ensures it will break out early after 4 or 5 ports (depending on whether
the first channel is aligned on a port boundary).  (`bitshift` will be
between -7 and 7 inclusive on the first iteration, increasing by 8 for
each subsequent operation.)

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agop54usb: add USB ID for Corega WLUSB2GTST USB adapter
Christian Lamparter [Tue, 24 Sep 2013 19:56:46 +0000 (21:56 +0200)]
p54usb: add USB ID for Corega WLUSB2GTST USB adapter

commit 1e43692cdb7cc445d6347d8a5207d9cef0c71434 upstream.

Added USB ID for Corega WLUSB2GTST USB adapter.

Reported-by: Joerg Kalisch <the_force@gmx.de>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agortlwifi: Align private space in rtl_priv struct
Larry Finger [Thu, 19 Sep 2013 02:21:35 +0000 (21:21 -0500)]
rtlwifi: Align private space in rtl_priv struct

commit 60ce314d1750fef843e9db70050e09e49f838b69 upstream.

The private array at the end of the rtl_priv struct is not aligned.
On ARM architecture, this causes an alignment trap and is fixed by aligning
that array with __align(sizeof(void *)). That should properly align that
space according to the requirements of all architectures.

Reported-by: Jason Andrews <jasona@cadence.com>
Tested-by: Jason Andrews <jasona@cadence.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoUSB: serial: option: Ignore card reader interface on Huawei E1750
Michal Malý [Sat, 28 Sep 2013 17:50:27 +0000 (19:50 +0200)]
USB: serial: option: Ignore card reader interface on Huawei E1750

commit eb2addd4044b4b2ce77693bde5bc810536dd96ee upstream.

Hi,

my Huawei 3G modem has an embedded Smart Card reader which causes
trouble when the modem is being detected (a bunch of "<warn>  (ttyUSBx):
open blocked by driver for more than 7 seconds!" in messages.log). This
trivial patch corrects the problem for me. The modem identifies itself
as "12d1:1406 Huawei Technologies Co., Ltd. E1750" in lsusb although the
description on the body says "Model E173u-1"

Signed-off-by: Michal Malý <madcatxster@prifuk.cz>
Cc: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agosparc32: Fix exit flag passed from traced sys_sigreturn
Kirill Tkhai [Thu, 25 Jul 2013 21:17:15 +0000 (01:17 +0400)]
sparc32: Fix exit flag passed from traced sys_sigreturn

[ Upstream commit 7a3b0f89e3fea680f93932691ca41a68eee7ab5e ]

Pass 1 in %o1 to indicate that syscall_trace accounts exit.

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agosparc64: Fix not SRA'ed %o5 in 32-bit traced syscall
Kirill Tkhai [Fri, 26 Jul 2013 13:21:12 +0000 (17:21 +0400)]
sparc64: Fix not SRA'ed %o5 in 32-bit traced syscall

[ Upstream commit ab2abda6377723e0d5fbbfe5f5aa16a5523344d1 ]

(From v1 to v2: changed comment)

On the way linux_sparc_syscall32->linux_syscall_trace32->goto 2f,
register %o5 doesn't clear its second 32-bit.

Fix that.

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agosparc64: Fix off by one in trampoline TLB mapping installation loop.
David S. Miller [Thu, 22 Aug 2013 23:38:46 +0000 (16:38 -0700)]
sparc64: Fix off by one in trampoline TLB mapping installation loop.

[ Upstream commit 63d499662aeec1864ec36d042aca8184ea6a938e ]

Reported-by: Kirill Tkhai <tkhai@yandex.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agosparc64: Remove RWSEM export leftovers
Kirill Tkhai [Mon, 12 Aug 2013 12:02:24 +0000 (16:02 +0400)]
sparc64: Remove RWSEM export leftovers

[ Upstream commit 61d9b9355b0d427bd1e732bd54628ff9103e496f ]

The functions

__down_read
__down_read_trylock
__down_write
__down_write_trylock
__up_read
__up_write
__downgrade_write

are implemented inline, so remove corresponding EXPORT_SYMBOLs
(They lead to compile errors on RT kernel).

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agosparc64: Fix ITLB handler of null page
Kirill Tkhai [Fri, 2 Aug 2013 15:23:18 +0000 (19:23 +0400)]
sparc64: Fix ITLB handler of null page

[ Upstream commit 1c2696cdaad84580545a2e9c0879ff597880b1a9 ]

1)Use kvmap_itlb_longpath instead of kvmap_dtlb_longpath.

2)Handle page #0 only, don't handle page #1: bleu -> blu

 (KERNBASE is 0x400000, so #1 does not exist too. But everything
  is possible in the future. Fix to not to have problems later.)

3)Remove unused kvmap_itlb_nonlinear.

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoesp_scsi: Fix tag state corruption when autosensing.
David S. Miller [Fri, 2 Aug 2013 01:08:34 +0000 (18:08 -0700)]
esp_scsi: Fix tag state corruption when autosensing.

[ Upstream commit 21af8107f27878813d0364733c0b08813c2c192a ]

Meelis Roos reports a crash in esp_free_lun_tag() in the presense
of a disk which has died.

The issue is that when we issue an autosense command, we do so by
hijacking the original command that caused the check-condition.

When we do so we clear out the ent->tag[] array when we issue it via
find_and_prep_issuable_command().  This is so that the autosense
command is forced to be issued non-tagged.

That is problematic, because it is the value of ent->tag[] which
determines whether we issued the original scsi command as tagged
vs. non-tagged (see esp_alloc_lun_tag()).

And that, in turn, is what trips up the sanity checks in
esp_free_lun_tag().  That function needs the original ->tag[] values
in order to free up the tag slot properly.

Fix this by remembering the original command's tag values, and
having esp_alloc_lun_tag() and esp_free_lun_tag() use them.

Reported-by: Meelis Roos <mroos@linux.ee>
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agopowerpc: Fix parameter clobber in csum_partial_copy_generic()
Paul E. McKenney [Tue, 1 Oct 2013 06:54:05 +0000 (16:54 +1000)]
powerpc: Fix parameter clobber in csum_partial_copy_generic()

commit d9813c3681a36774b254c0cdc9cce53c9e22c756 upstream.

The csum_partial_copy_generic() uses register r7 to adjust the remaining
bytes to process.  Unfortunately, r7 also holds a parameter, namely the
address of the flag to set in case of access exceptions while reading
the source buffer.  Lacking a quantum implementation of PowerPC, this
commit instead uses register r9 to do the adjusting, leaving r7's
pointer uncorrupted.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agopowerpc/vio: Fix modalias_show return values
Prarit Bhargava [Mon, 23 Sep 2013 13:33:36 +0000 (09:33 -0400)]
powerpc/vio: Fix modalias_show return values

commit e82b89a6f19bae73fb064d1b3dd91fcefbb478f4 upstream.

modalias_show() should return an empty string on error, not -ENODEV.

This causes the following false and annoying error:

> find /sys/devices -name modalias -print0 | xargs -0 cat >/dev/null
cat: /sys/devices/vio/4000/modalias: No such device
cat: /sys/devices/vio/4001/modalias: No such device
cat: /sys/devices/vio/4002/modalias: No such device
cat: /sys/devices/vio/4004/modalias: No such device
cat: /sys/devices/vio/modalias: No such device

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agopowerpc/iommu: Use GFP_KERNEL instead of GFP_ATOMIC in iommu_init_table()
Nishanth Aravamudan [Tue, 1 Oct 2013 21:04:53 +0000 (14:04 -0700)]
powerpc/iommu: Use GFP_KERNEL instead of GFP_ATOMIC in iommu_init_table()

commit 1cf389df090194a0976dc867b7fffe99d9d490cb upstream.

Under heavy (DLPAR?) stress, we tripped this panic() in
arch/powerpc/kernel/iommu.c::iommu_init_table():

page = alloc_pages_node(nid, GFP_ATOMIC, get_order(sz));
if (!page)
panic("iommu_init_table: Can't allocate %ld bytes\n", sz);

Before the panic() we got a page allocation failure for an order-2
allocation. There appears to be memory free, but perhaps not in the
ATOMIC context. I looked through all the call-sites of
iommu_init_table() and didn't see any obvious reason to need an ATOMIC
allocation. Most call-sites in fact have an explicit GFP_KERNEL
allocation shortly before the call to iommu_init_table(), indicating we
are not in an atomic context. There is some indirection for some paths,
but I didn't see any locks indicating that GFP_KERNEL is inappropriate.

With this change under the same conditions, we have not been able to
reproduce the panic.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoASoC: 88pm860x: array overflow in snd_soc_put_volsw_2r_st()
Dan Carpenter [Fri, 13 Sep 2013 07:52:49 +0000 (10:52 +0300)]
ASoC: 88pm860x: array overflow in snd_soc_put_volsw_2r_st()

commit d967967e8d1116fb38bad25e58714b5dddd03cca upstream.

This is called from snd_ctl_elem_write() with user supplied data so we
need to add some bounds checking.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoASoC: max98095: a couple array underflows
Dan Carpenter [Fri, 13 Sep 2013 07:52:14 +0000 (10:52 +0300)]
ASoC: max98095: a couple array underflows

commit f8d7b13e14357ed19d2ca2799539600418dc3939 upstream.

The ->put() function are called from snd_ctl_elem_write() with user
supplied data.  The limit checks here could underflow leading to a
crash.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agoll_temac: Reset dma descriptors indexes on ndo_open
Ricardo Ribalda [Tue, 1 Oct 2013 06:17:10 +0000 (08:17 +0200)]
ll_temac: Reset dma descriptors indexes on ndo_open

[ Upstream commit 7167cf0e8cd10287b7912b9ffcccd9616f382922 ]

The dma descriptors indexes are only initialized on the probe function.

If a packet is on the buffer when temac_stop is called, the dma
descriptors indexes can be left on a incorrect state where no other
package can be sent.

So an interface could be left in an usable state after ifdow/ifup.

This patch makes sure that the descriptors indexes are in a proper
status when the device is open.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 years agobonding: Fix broken promiscuity reference counting issue
Neil Horman [Fri, 27 Sep 2013 16:22:15 +0000 (12:22 -0400)]
bonding: Fix broken promiscuity reference counting issue

[ Upstream commit 5a0068deb611109c5ba77358be533f763f395ee4 ]

Recently grabbed this report:
https://bugzilla.redhat.com/show_bug.cgi?id=1005567

Of an issue in which the bonding driver, with an attached vlan encountered the
following errors when bond0 was taken down and back up:

dummy1: promiscuity touches roof, set promiscuity failed. promiscuity feature of
device might be broken.

The error occurs because, during __bond_release_one, if we release our last
slave, we take on a random mac address and issue a NETDEV_CHANGEADDR
notification.  With an attached vlan, the vlan may see that the vlan and bond
mac address were in sync, but no longer are.  This triggers a call to dev_uc_add
and dev_set_rx_mode, which enables IFF_PROMISC on the bond device.  Then, when
we complete __bond_release_one, we use the current state of the bond flags to
determine if we should decrement the promiscuity of the releasing slave.  But
since the bond changed promiscuity state during the release operation, we
incorrectly decrement the slave promisc count when it wasn't in promiscuous mode
to begin with, causing the above error

Fix is pretty simple, just cache the bonding flags at the start of the function
and use those when determining the need to set promiscuity.

This is also needed for the ALLMULTI flag

Reported-by: Mark Wu <wudxw@linux.vnet.ibm.com>
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Mark Wu <wudxw@linux.vnet.ibm.com>
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>