pandora-kernel.git
13 years agohfsplus: remove superflous rootflags field in hfsplus_inode_info
Christoph Hellwig [Thu, 14 Oct 2010 13:54:33 +0000 (09:54 -0400)]
hfsplus: remove superflous rootflags field in hfsplus_inode_info

The rootflags field in hfsplus_inode_info only caches the immutable and
append-only flags in the VFS inode, so we can easily get rid of it.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: fix link corruption
Christoph Hellwig [Thu, 14 Oct 2010 13:54:28 +0000 (09:54 -0400)]
hfsplus: fix link corruption

HFS implements hardlink by using indirect catalog entries that refer to a hidden
directly.  The link target is cached in the dev field in the HFS+ specific
inode, which is also used for the device number for device files, and inside
for passing the nlink value of the indirect node from hfsplus_cat_write_inode
to a helper function.  Now if we happen to write out the indirect node while
hfsplus_link is creating the catalog entry we'll get a link pointing to the
linkid of the current nlink value.  This can easily be reproduced by a large
enough loop of local git-clone operations.

Stop abusing the dev field in the HFS+ inode for short term storage by
refactoring the way the permission structure in the catalog entry is
set up, and rename the dev field to linkid to avoid any confusion.

While we're at it also prevent creating hard links to special files, as
the HFS+ dev and linkid share the same space in the on-disk structure.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: validate btree flags
Christoph Hellwig [Thu, 14 Oct 2010 13:54:23 +0000 (09:54 -0400)]
hfsplus: validate btree flags

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: handle more on-disk corruptions without oopsing
Eric Sandeen [Thu, 14 Oct 2010 13:53:48 +0000 (09:53 -0400)]
hfsplus: handle more on-disk corruptions without oopsing

hfs seems prone to bad things when it encounters on disk corruption.  Many
values are read from disk, and used as lengths to memcpy, as an example.
This patch fixes up several of these problematic cases.

o sanity check the on-disk maximum key lengths on mount
  (these are set to a defined value at mkfs time and shouldn't differ)
o check on-disk node keylens against the maximum key length for each tree
o fix hfs_btree_open so that going out via free_tree: doesn't wind
  up in hfs_releasepage, which wants to follow the very pointer
  we were trying to set up:
HFS_SB(sb)->cat_tree = hfs_btree_open()
    .
  failure gets to hfs_releasepage and tries to follow HFS_SB(sb)->cat_tree

Tested with the fsfuzzer; it survives more than it used to.

[hch: ported of commit cf0594625083111ae522496dc1c256f7476939c2 from hfs]
[hch: added the fixes from 5581d018ed3493d226e7a4d645d9c8a5af6c36b]

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: hfs_bnode_find() can fail, resulting in hfs_bnode_split() breakage
Al Viro [Thu, 14 Oct 2010 13:53:42 +0000 (09:53 -0400)]
hfsplus: hfs_bnode_find() can fail, resulting in hfs_bnode_split() breakage

oops and fs corruption; the latter can happen even on valid fs in case of oom.

[hch: port of commit 3d10a15d6919488204bdb264050d156ced20d9aa from hfs]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: fix oops on mount with corrupted btree extent records
Jeff Mahoney [Thu, 14 Oct 2010 13:53:37 +0000 (09:53 -0400)]
hfsplus: fix oops on mount with corrupted btree extent records

A particular fsfuzzer run caused an hfs file system to crash on mount. This
is due to a corrupted MDB extent record causing a miscalculation of
HFSPLUS_I(inode)->first_blocks for the extent tree. If the extent records
are zereod out, then it won't trigger the first_blocks special case and
instead falls through to the extent code, which we're in the middle
of initializing.

This patch catches the 0 size extent records, reports the corruption,
and fails the mount.

[hch: ported of commit 47f365eb575735c6b2edf5d08e0d16d26a9c23bd from hfs]

Reported-by: Ramon de Carvalho Valle <rcvalle@linux.vnet.ibm.com>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: fix rename over directories
Christoph Hellwig [Fri, 1 Oct 2010 07:12:08 +0000 (09:12 +0200)]
hfsplus: fix rename over directories

When renaming over a directory we need to use hfsplus_rmdir instead of
hfsplus_unlink to evict the victim.  This makes sure we properly error out
on non-empty directory as required by Posix (BZ #16571), and it also makes
sure we do the right thing in case i_nlink will every be set correctly for
directories on hfsplus.

Reported-by: Vlado Plaga <rechner@vlado-do.de>
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: convert tree_lock to mutex
Thomas Gleixner [Fri, 1 Oct 2010 03:46:52 +0000 (05:46 +0200)]
hfsplus: convert tree_lock to mutex

tree_lock is used as mutex so make it a mutex.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: add missing extent locking in hfsplus_write_inode
Christoph Hellwig [Fri, 1 Oct 2010 03:46:31 +0000 (05:46 +0200)]
hfsplus: add missing extent locking in hfsplus_write_inode

Most of the extent handling code already does proper SMP locking, but
hfsplus_write_inode was calling into hfsplus_ext_write_extent without
taking the extents_lock.  Fix this by splitting hfsplus_ext_write_extent
into an internal helper that expects the lock, and a public interface
that first acquires it.

Also add a few locking asserts and document the locking rules in
hfsplus_fs.h.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: protect readdir against removals from open_dir_list
Christoph Hellwig [Fri, 1 Oct 2010 03:45:25 +0000 (05:45 +0200)]
hfsplus: protect readdir against removals from open_dir_list

We already have i_mutex for readdir and the namespace operations that add
entries to open_dir_list, the only thing that was missing was the removal
in hfsplus_dir_release.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: use atomic bitops for the superblock flags
Christoph Hellwig [Fri, 1 Oct 2010 03:45:20 +0000 (05:45 +0200)]
hfsplus: use atomic bitops for the superblock flags

The flags in the HFS+-specific superlock do get modified during runtime,
use atomic bitops to make the modifications SMP safe.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: add per-superblock lock for volume header updates
Christoph Hellwig [Fri, 1 Oct 2010 03:45:08 +0000 (05:45 +0200)]
hfsplus: add per-superblock lock for volume header updates

Lock updates to the mutal fields in the volume header, and document the
locing in the hfsplus_sb_info structure.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: remove the rsrc_inodes list
Christoph Hellwig [Fri, 1 Oct 2010 03:44:02 +0000 (05:44 +0200)]
hfsplus: remove the rsrc_inodes list

We never walk the list - the only reason for it is to make the resource fork
inodes appear hashed to the writeback code.  Borrow a trick from JFS to do
that without needing a list head.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: do not cache and write next_alloc
Christoph Hellwig [Fri, 1 Oct 2010 03:43:58 +0000 (05:43 +0200)]
hfsplus: do not cache and write next_alloc

We never look at it, nor change the next_alloc field in the superblock.  So
don't bother caching it or writing it out in hfsplus_sync_fs.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: fix error handling in hfsplus_symlink
Christoph Hellwig [Fri, 1 Oct 2010 03:43:54 +0000 (05:43 +0200)]
hfsplus: fix error handling in hfsplus_symlink

We need to free the inode again on a hfsplus_create_cat failure.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: merge mknod/mkdir/creat
Christoph Hellwig [Fri, 1 Oct 2010 03:43:50 +0000 (05:43 +0200)]
hfsplus: merge mknod/mkdir/creat

Make hfsplus_mkdir and hfsplus_create call hfsplus_mknod instead of
duplicating the code.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: clean up hfsplus_write_inode
Christoph Hellwig [Fri, 1 Oct 2010 03:43:43 +0000 (05:43 +0200)]
hfsplus: clean up hfsplus_write_inode

Add a new hfsplus_system_write_inode for writing the special system inodes
and streamline the fastpath write_inode code.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: clean up hfsplus_iget
Christoph Hellwig [Fri, 1 Oct 2010 03:43:41 +0000 (05:43 +0200)]
hfsplus: clean up hfsplus_iget

Add a new hfsplus_system_read_inode for reading the special system inodes
and streamline the fastpath iget code.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: fix HFSPLUS_I calling convention
Christoph Hellwig [Fri, 1 Oct 2010 03:43:31 +0000 (05:43 +0200)]
hfsplus: fix HFSPLUS_I calling convention

HFSPLUS_I doesn't return a pointer to the hfsplus-specific inode
information like all other FOO_I macros, but dereference the pointer in a way
that made it look like a direct struct derefence.  This only works as long
as the HFSPLUS_I macro is used directly and prevents us from keepig a local
hfsplus_inode_info pointer.  Fix the calling convention and introduce a local
hip variable in all functions that use it constantly.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: fix HFSPLUS_SB calling convention
Christoph Hellwig [Fri, 1 Oct 2010 03:42:59 +0000 (05:42 +0200)]
hfsplus: fix HFSPLUS_SB calling convention

HFSPLUS_SB doesn't return a pointer to the hfsplus-specific superblock
information like all other FOO_SB macros, but dereference the pointer in a way
that made it look like a direct struct derefence.  This only works as long
as the HFSPLUS_SB macro is used directly and prevents us from keepig a local
hfsplus_sb_info pointer.  Fix the calling convention and introduce a local
sbi variable in all functions that use it constantly.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: remove BKL from hfsplus_put_super
Christoph Hellwig [Fri, 1 Oct 2010 03:41:53 +0000 (05:41 +0200)]
hfsplus: remove BKL from hfsplus_put_super

Except for ->put_super the BKL is now gone from HFS, which means it's
superflous there too as ->put_super is serialized by the VFS.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: use alloc_mutex in hfsplus_sync_fs
Christoph Hellwig [Fri, 1 Oct 2010 03:41:50 +0000 (05:41 +0200)]
hfsplus: use alloc_mutex in hfsplus_sync_fs

Use alloc_mutex to protect hfsplus_sync_fs against itself and concurrent
allocations, which allows to get rid of lock_super in hfsplus.

Note that most fields in the superblock still aren't protected against
concurrent allocations, that will follow later.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: introduce alloc_mutex
Christoph Hellwig [Fri, 1 Oct 2010 03:41:39 +0000 (05:41 +0200)]
hfsplus: introduce alloc_mutex

Use a new per-sb alloc_mutex instead of abusing i_mutex of the alloc_file
to protect block allocations.  This gets rid of lockdep nesting warnings
and prepares for extending the scope of alloc_mutex.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: protect setflags using i_mutex
Christoph Hellwig [Fri, 1 Oct 2010 03:41:35 +0000 (05:41 +0200)]
hfsplus: protect setflags using i_mutex

Use i_mutex for protecting against concurrent setflags ioctls like in
other filesystems and get rid of the BKL in hfsplus_ioctl.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: split hfsplus_ioctl
Christoph Hellwig [Fri, 1 Oct 2010 03:41:31 +0000 (05:41 +0200)]
hfsplus: split hfsplus_ioctl

Give each ioctl command a function of it's own.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agohfsplus: fix BKL leak in hfsplus_ioctl
Christoph Hellwig [Fri, 1 Oct 2010 03:41:27 +0000 (05:41 +0200)]
hfsplus: fix BKL leak in hfsplus_ioctl

Currenly the HFSPLUS_IOC_EXT2_GETFLAGS case never unlocks the BKL, which
can lead to easily reproduced lockups when doing multiple GETFLAGS ioctls.

Fix this by only taking the BKL for the HFSPLUS_IOC_EXT2_SETFLAGS case
as neither HFSPLUS_IOC_EXT2_GETFLAGS not the default error case needs it.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>
13 years agoalpha: fix compile problem in arch/alpha/kernel/signal.c
Linus Torvalds [Tue, 28 Sep 2010 20:26:57 +0000 (13:26 -0700)]
alpha: fix compile problem in arch/alpha/kernel/signal.c

Tssk.  Apparently Al hadn't checked commit c52c2ddc1dfa ("alpha: switch
osf_sigprocmask() to use of sigprocmask()") at all. It doesn't compile.

Fixed as per suggestions from Michael Cree.

Reported-by: Michael Cree <mcree@orcon.net.nz>
Cc: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Tue, 28 Sep 2010 19:38:52 +0000 (12:38 -0700)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ahci: fix module refcount breakage introduced by libahci split

13 years agoahci: fix module refcount breakage introduced by libahci split
Tejun Heo [Tue, 21 Sep 2010 07:25:48 +0000 (09:25 +0200)]
ahci: fix module refcount breakage introduced by libahci split

libata depends on scsi_host_template for module reference counting and
sht's should be owned by each low level driver.  During libahci split,
the sht was left with libahci.ko leaving the actual low level drivers
not reference counted.  This made ahci and ahci_platform always
unloadable even while they're being actively used.

Fix it by defining AHCI_SHT() macro in ahci.h and defining a sht for
each low level ahci driver.

stable: only applicable to 2.6.35.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Pedro Francisco <pedrogfrancisco@gmail.com>
Tested-by: Michael Tokarev <mjt@tls.msk.ru>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groec...
Linus Torvalds [Tue, 28 Sep 2010 19:13:13 +0000 (12:13 -0700)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
  hwmon (coretemp): Fix build breakage if SMP is undefined

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
Linus Torvalds [Tue, 28 Sep 2010 19:02:22 +0000 (12:02 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: fix pci_resource_alignment prototype

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Tue, 28 Sep 2010 19:01:26 +0000 (12:01 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (47 commits)
  tcp: Fix >4GB writes on 64-bit.
  net/9p: Mount only matching virtio channels
  de2104x: fix ethtool
  tproxy: check for transparent flag in ip_route_newports
  ipv6: add IPv6 to neighbour table overflow warning
  tcp: fix TSO FACK loss marking in tcp_mark_head_lost
  3c59x: fix regression from patch "Add ethtool WOL support"
  ipv6: add a missing unregister_pernet_subsys call
  s390: use free_netdev(netdev) instead of kfree()
  sgiseeq: use free_netdev(netdev) instead of kfree()
  rionet: use free_netdev(netdev) instead of kfree()
  ibm_newemac: use free_netdev(netdev) instead of kfree()
  smsc911x: Add MODULE_ALIAS()
  net: reset skb queue mapping when rx'ing over tunnel
  br2684: fix scheduling while atomic
  de2104x: fix TP link detection
  de2104x: fix power management
  de2104x: disable autonegotiation on broken hardware
  net: fix a lockdep splat
  e1000e: 82579 do not gate auto config of PHY by hardware during nominal use
  ...

13 years agohwmon (coretemp): Fix build breakage if SMP is undefined
Guenter Roeck [Tue, 28 Sep 2010 01:01:49 +0000 (18:01 -0700)]
hwmon (coretemp): Fix build breakage if SMP is undefined

Commit e40cc4bdfd4b89813f072f72bd9c7055814d3f0f introduced
a build breakage if CONFIG_SMP is undefined. This commit
fixes the problem.

This fix is only a workaround. For a real fix, cpu_sibling_mask() should
be defined in UP include code, eg in linux/smp.h, and asm/smp.h should not be
included directly. This fix is currently not possible because asm/smp.h defines
cpu_sibling_mask() unconditionally and is included directly from many source
files.

Reported-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
13 years agoMerge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux...
Linus Torvalds [Tue, 28 Sep 2010 04:19:27 +0000 (21:19 -0700)]
Merge branch 'x86/urgent' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Avoid 'constant_test_bit()' misoptimization due to cast to non-volatile

13 years agotcp: Fix >4GB writes on 64-bit.
David S. Miller [Tue, 28 Sep 2010 03:24:54 +0000 (20:24 -0700)]
tcp: Fix >4GB writes on 64-bit.

Fixes kernel bugzilla #16603

tcp_sendmsg() truncates iov_len to an 'int' which a 4GB write to write
zero bytes, for example.

There is also the problem higher up of how verify_iovec() works.  It
wants to prevent the total length from looking like an error return
value.

However it does this using 'int', but syscalls return 'long' (and
thus signed 64-bit on 64-bit machines).  So it could trigger
false-positives on 64-bit as written.  So fix it to use 'long'.

Reported-by: Olaf Bonorden <bono@onlinehome.de>
Reported-by: Daniel Büse <dbuese@gmx.de>
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoFix pktcdvd ioctl dev_minor range check
Dan Rosenberg [Mon, 27 Sep 2010 16:30:28 +0000 (12:30 -0400)]
Fix pktcdvd ioctl dev_minor range check

The PKT_CTRL_CMD_STATUS device ioctl retrieves a pointer to a
pktcdvd_device from the global pkt_devs array.  The index into this
array is provided directly by the user and is a signed integer, so the
comparison to ensure that it falls within the bounds of this array will
fail when provided with a negative index.

This can be used to read arbitrary kernel memory or cause a crash due to
an invalid pointer dereference.  This can be exploited by users with
permission to open /dev/pktcdvd/control (on many distributions, this is
readable by group "cdrom").

Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
[ Rather than add a cast, just make the function take the right type -Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMN10300: Default config choice GDBSTUB_TTYSM0 should be GDBSTUB_ON_TTYSM0
David Howells [Mon, 27 Sep 2010 12:12:33 +0000 (13:12 +0100)]
MN10300: Default config choice GDBSTUB_TTYSM0 should be GDBSTUB_ON_TTYSM0

The configuration choice for the port on which the GDB stub listens has
a default of GDBSTUB_TTYSM0, but this should be GDBSTUB_ON_TTYSM0 to
match the option.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agonet/9p: Mount only matching virtio channels
Sven Eckelmann [Mon, 27 Sep 2010 22:54:44 +0000 (15:54 -0700)]
net/9p: Mount only matching virtio channels

p9_virtio_create will only compare the the channel's tag characters
against the device name till the end of the channel's tag but not till
the end of the device name. This means that if a user defines channels
with the tags foo and foobar then he would mount foo when he requested
foonot and may mount foo when he requested foobar.

Thus it is necessary to check both string lengths against each other in
case of a successful partial string match.

Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agode2104x: fix ethtool
Ondrej Zary [Mon, 27 Sep 2010 11:41:45 +0000 (11:41 +0000)]
de2104x: fix ethtool

When the interface is up, using ethtool breaks it because:
a) link is put down but media_timer interval is not shortened to NO_LINK
b) rxtx is stopped but not restarted

Also manual 10baseT-HD (and probably FD too - untested) mode does not work -
the link is forced up, packets are transmitted but nothing is received.
Changing CSR14 value to match documentation (not disabling link check) fixes this.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoMerge branch 'vhost-net' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
David S. Miller [Mon, 27 Sep 2010 22:04:23 +0000 (15:04 -0700)]
Merge branch 'vhost-net' of git://git./linux/kernel/git/mst/vhost

13 years agotproxy: check for transparent flag in ip_route_newports
Ulrich Weber [Mon, 27 Sep 2010 03:31:00 +0000 (03:31 +0000)]
tproxy: check for transparent flag in ip_route_newports

as done in ip_route_connect()

Signed-off-by: Ulrich Weber <uweber@astaro.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoipv6: add IPv6 to neighbour table overflow warning
Ulrich Weber [Mon, 27 Sep 2010 22:02:18 +0000 (15:02 -0700)]
ipv6: add IPv6 to neighbour table overflow warning

IPv4 and IPv6 have separate neighbour tables, so
the warning messages should be distinguishable.

[ Add a suitable message prefix on the ipv4 side as well -DaveM ]

Signed-off-by: Ulrich Weber <uweber@astaro.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agotcp: fix TSO FACK loss marking in tcp_mark_head_lost
Yuchung Cheng [Fri, 24 Sep 2010 13:22:06 +0000 (13:22 +0000)]
tcp: fix TSO FACK loss marking in tcp_mark_head_lost

When TCP uses FACK algorithm to mark lost packets in
tcp_mark_head_lost(), if the number of packets in the (TSO) skb is
greater than the number of packets that should be marked lost, TCP
incorrectly exits the loop and marks no packets lost in the skb. This
underestimates tp->lost_out and affects the recovery/retransmission.
This patch fargments the skb and marks the correct amount of packets
lost.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Mon, 27 Sep 2010 19:33:54 +0000 (12:33 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  RDMA/cxgb3: Turn off RX coalescing for iWARP connections

13 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Mon, 27 Sep 2010 19:32:36 +0000 (12:32 -0700)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm: (28 commits)
  ARM: 6411/1: vexpress: set RAM latencies to 1 cycle for PL310 on ct-ca9x4 tile
  ARM: 6409/1: davinci: map sram using MT_MEMORY_NONCACHED instead of MT_DEVICE
  ARM: 6408/1: omap: Map only available sram memory
  ARM: 6407/1: mmu: Setup MT_MEMORY and MT_MEMORY_NONCACHED L1 entries
  ARM: pxa: remove pr_<level> uses of KERN_<level>
  ARM: pxa168fb: clear enable bit when not active
  ARM: pxa: fix cpu_is_pxa*() not expanding to zero when not configured
  ARM: pxa168: fix corrected reset vector
  ARM: pxa: Use PIO for PI2C communication on Palm27x
  ARM: pxa: Fix Vpac270 gpio_power for MMC
  ARM: 6401/1: plug a race in the alignment trap handler
  ARM: 6406/1: at91sam9g45: fix i2c bus speed
  leds: leds-ns2: fix locking
  ARM: dove: fix __io() definition to use bus based offset
  dmaengine: fix interrupt clearing for mv_xor
  ARM: kirkwood: Unbreak PCIe I/O port
  ARM: Fix build error when using KCONFIG_CONFIG
  ARM: 6383/1: Implement phys_mem_access_prot() to avoid attributes aliasing
  ARM: 6400/1: at91: fix arch_gettimeoffset fallout
  ARM: 6398/1: add proc info for ARM11MPCore/Cortex-A9 from ARM
  ...

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh...
Linus Torvalds [Mon, 27 Sep 2010 19:32:00 +0000 (12:32 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ericvh/v9fs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  net/9p: fix memory handling/allocation in rdma_request()

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
Linus Torvalds [Mon, 27 Sep 2010 19:31:12 +0000 (12:31 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/bp/bp

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  amd64_edac: Fix driver module removal

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Mon, 27 Sep 2010 19:29:39 +0000 (12:29 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  TOMOYO: Don't abuse sys_getpid(), sys_getppid()

13 years agoMerge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle...
Linus Torvalds [Mon, 27 Sep 2010 19:28:19 +0000 (12:28 -0700)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/ickle/drm-intel

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel:
  drm/i915/sdvo: Handle unsupported GET_SUPPORTED_ENHANCEMENTS gracefully
  drm/i915/sdvo: Cleanup connector on error path
  drm/i915: Fix 945GM regression in e259befd

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
Linus Torvalds [Mon, 27 Sep 2010 19:27:00 +0000 (12:27 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/cjb/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc:
  mmc: sdhci-s3c: fix NULL ptr access in sdhci_s3c_remove
  mmc: sdhci-s3c: fix incorrect spinlock usage after merge
  mmc: MAINTAINERS: add myself as MMC maintainer

13 years agoMerge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
Linus Torvalds [Mon, 27 Sep 2010 19:26:33 +0000 (12:26 -0700)]
Merge branch 'urgent' of git://git./linux/kernel/git/brodo/pcmcia-2.6

* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
  pcmcia: pd6729: Fix error path
  pcmcia: preserve configuration information if request_io fails partly

13 years agoMerge git://git.infradead.org/iommu-2.6
Linus Torvalds [Mon, 27 Sep 2010 19:25:10 +0000 (12:25 -0700)]
Merge git://git.infradead.org/iommu-2.6

* git://git.infradead.org/iommu-2.6:
  intel-iommu: Use symbolic values instead of magic numbers in Lenovo w/a
  intel-iommu: Abort IOMMU setup for igfx if BIOS gave no shadow GTT space

13 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 27 Sep 2010 19:22:21 +0000 (12:22 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86/amd-iommu: Fix rounding-bug in __unmap_single
  x86/amd-iommu: Work around S3 BIOS bug
  x86/amd-iommu: Set iommu configuration flags in enable-loop
  x86, setup: Fix earlyprintk=serial,0x3f8,115200
  x86, setup: Fix earlyprintk=serial,ttyS0,115200

13 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 27 Sep 2010 19:21:48 +0000 (12:21 -0700)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf, x86: Catch spurious interrupts after disabling counters
  tracing/x86: Don't use mcount in kvmclock.c
  tracing/x86: Don't use mcount in pvclock.c

13 years agomn10300: check __get_user/__put_user results...
Al Viro [Sun, 26 Sep 2010 18:29:12 +0000 (19:29 +0100)]
mn10300: check __get_user/__put_user results...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomn10300: get rid of set_fs(USER_DS) in sigframe setup
Al Viro [Sun, 26 Sep 2010 18:29:02 +0000 (19:29 +0100)]
mn10300: get rid of set_fs(USER_DS) in sigframe setup

It really has no business being there; short of a serious kernel bug
we should already have USER_DS at that point.  It shouldn't have been
done on x86 either...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomn10300: ->restart_block.fn needs to be reset on sigreturn
Al Viro [Sun, 26 Sep 2010 18:28:52 +0000 (19:28 +0100)]
mn10300: ->restart_block.fn needs to be reset on sigreturn

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomn10300: prevent double syscall restarts
Al Viro [Sun, 26 Sep 2010 18:28:42 +0000 (19:28 +0100)]
mn10300: prevent double syscall restarts

set ->orig_d0 to -1, same as what sigreturn does

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomn10300: avoid SIGSEGV delivery loop
Al Viro [Sun, 26 Sep 2010 18:28:32 +0000 (19:28 +0100)]
mn10300: avoid SIGSEGV delivery loop

force_sigsegv() is there for purpose...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoalpha: __get_user/__put_user results need to be checked...
Al Viro [Sun, 26 Sep 2010 18:28:22 +0000 (19:28 +0100)]
alpha: __get_user/__put_user results need to be checked...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoalpha: switch osf_sigprocmask() to use of sigprocmask()
Al Viro [Sun, 26 Sep 2010 18:28:12 +0000 (19:28 +0100)]
alpha: switch osf_sigprocmask() to use of sigprocmask()

get rid of a useless wrapper, while we are at it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years ago3c59x: fix regression from patch "Add ethtool WOL support"
Jan Beulich [Mon, 27 Sep 2010 18:07:00 +0000 (11:07 -0700)]
3c59x: fix regression from patch "Add ethtool WOL support"

This patch (commit 690a1f2002a3091bd18a501f46c9530f10481463) added a
new call site for acpi_set_WOL() without checking that the function is
actually suitable to be called via

 vortex_set_wol+0xcd/0xe0 [3c59x]
 dev_ethtool+0xa5a/0xb70
 dev_ioctl+0x2e0/0x4b0
 T.961+0x49/0x50
 sock_ioctl+0x47/0x290
 do_vfs_ioctl+0x7f/0x340
 sys_ioctl+0x80/0xa0
 system_call_fastpath+0x16/0x1b

i.e. outside of code paths run when the device is not yet enabled or
already disabled. In particular, putting the device into D3hot is a
pretty bad idea when it was already brought up.

Furthermore, all prior callers of the function made sure they're
actually dealing with a PCI device, while the newly added one didn't.

In the same spirit, the .get_wol handler shouldn't indicate support
for WOL for non-PCI devices.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoRDMA/cxgb3: Turn off RX coalescing for iWARP connections
Steve Wise [Sun, 19 Sep 2010 00:38:21 +0000 (19:38 -0500)]
RDMA/cxgb3: Turn off RX coalescing for iWARP connections

The HW by default has RX coalescing on.  For iWARP connections, this
causes a 100ms delay in connection establishement due to the ingress
MPA Start message being stalled in HW.  So explicitly turn RX
coalescing off when setting up iWARP connections.

This was causing very bad performance for NP64 gather operations using
Open MPI, due to the way it sets up connections on larger jobs.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Cc: <stable@kernel.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
13 years agoARM: 6411/1: vexpress: set RAM latencies to 1 cycle for PL310 on ct-ca9x4 tile
Will Deacon [Mon, 27 Sep 2010 13:55:15 +0000 (14:55 +0100)]
ARM: 6411/1: vexpress: set RAM latencies to 1 cycle for PL310 on ct-ca9x4 tile

The PL310 on the ct-ca9x4 tile for the Versatile Express does not need
to add additional latency when accessing its cache RAMs. Unfortunately,
the boot monitor sets this up for an 8-cycle delay on reads and writes,
resulting in greatly reduced memory performance when the L2 cache is
enabled.

This patch sets the L2 RAM latencies to the correct value of 1 cycle
on the ct-ca9x4 tile before enabling the L2 cache.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agonet/9p: fix memory handling/allocation in rdma_request()
Davidlohr Bueso [Mon, 13 Sep 2010 15:53:18 +0000 (15:53 +0000)]
net/9p: fix memory handling/allocation in rdma_request()

Return -ENOMEM when erroring on kmalloc and fix memory leaks when returning on error.

Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
13 years agoamd64_edac: Fix driver module removal
Borislav Petkov [Sun, 26 Sep 2010 10:42:23 +0000 (12:42 +0200)]
amd64_edac: Fix driver module removal

f4347553b30ec66530bfe63c84530afea3803396 removed the edac polling
mechanism in favor of using a notifier chain for conveying MCE
information to edac. However, the module removal path didn't test
whether the driver had setup the polling function workqueue at all and
the rmmod process was hanging in the kernel at try_to_del_timer_sync()
in the cancel_delayed_work() path, trying to cancel an uninitialized
work struct.

Fix that by adding a balancing check to the workqueue removal path.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
13 years agox86: Avoid 'constant_test_bit()' misoptimization due to cast to non-volatile
Alexander Chumachenko [Thu, 1 Apr 2010 12:34:52 +0000 (15:34 +0300)]
x86: Avoid 'constant_test_bit()' misoptimization due to cast to non-volatile

While debugging bit_spin_lock() hang, it was tracked down to gcc-4.4
misoptimization of non-inlined constant_test_bit() due to non-volatile
addr when 'const volatile unsigned long *addr' cast to 'unsigned long *'
with subsequent unconditional jump to pause (and not to the test) leading
to hang.

Compiling with gcc-4.3 or disabling CONFIG_OPTIMIZE_INLINING yields inlined
constant_test_bit() and correct jump, thus working around the kernel bug.

Other arches than asm-x86 may implement this slightly differently;
2.6.29 mitigates the misoptimization by changing the function prototype
(commit c4295fbb6048d85f0b41c5ced5cbf63f6811c46c) but probably fixing the issue
itself is better.

Signed-off-by: Alexander Chumachenko <ledest@gmail.com>
Signed-off-by: Michael Shigorin <mike@osdn.org.ua>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
13 years agoipv6: add a missing unregister_pernet_subsys call
Neil Horman [Fri, 24 Sep 2010 09:55:52 +0000 (09:55 +0000)]
ipv6: add a missing unregister_pernet_subsys call

Clean up a missing exit path in the ipv6 module init routines.  In
addrconf_init we call ipv6_addr_label_init which calls register_pernet_subsys
for the ipv6_addr_label_ops structure.  But if module loading fails, or if the
ipv6 module is removed, there is no corresponding unregister_pernet_subsys call,
which leaves a now-bogus address on the pernet_list, leading to oopses in
subsequent registrations.  This patch cleans up both the failed load path and
the unload path.  Tested by myself with good results.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
 include/net/addrconf.h |    1 +
 net/ipv6/addrconf.c    |   11 ++++++++---
 net/ipv6/addrlabel.c   |    5 +++++
 3 files changed, 14 insertions(+), 3 deletions(-)
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agos390: use free_netdev(netdev) instead of kfree()
Vasiliy Kulikov [Mon, 27 Sep 2010 01:56:06 +0000 (18:56 -0700)]
s390: use free_netdev(netdev) instead of kfree()

Freeing netdev without free_netdev() leads to net, tx leaks.
I might lead to dereferencing freed pointer.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

@@
struct net_device* dev;
@@

-kfree(dev)
+free_netdev(dev)

Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agosgiseeq: use free_netdev(netdev) instead of kfree()
Kulikov Vasiliy [Sat, 25 Sep 2010 23:58:06 +0000 (23:58 +0000)]
sgiseeq: use free_netdev(netdev) instead of kfree()

Freeing netdev without free_netdev() leads to net, tx leaks.
I might lead to dereferencing freed pointer.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

@@
struct net_device* dev;
@@

-kfree(dev)
+free_netdev(dev)

Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agorionet: use free_netdev(netdev) instead of kfree()
Kulikov Vasiliy [Sat, 25 Sep 2010 23:58:03 +0000 (23:58 +0000)]
rionet: use free_netdev(netdev) instead of kfree()

Freeing netdev without free_netdev() leads to net, tx leaks.
I might lead to dereferencing freed pointer.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

@@
struct net_device* dev;
@@

-kfree(dev)
+free_netdev(dev)

Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoibm_newemac: use free_netdev(netdev) instead of kfree()
Kulikov Vasiliy [Sat, 25 Sep 2010 23:58:00 +0000 (23:58 +0000)]
ibm_newemac: use free_netdev(netdev) instead of kfree()

Freeing netdev without free_netdev() leads to net, tx leaks.
I might lead to dereferencing freed pointer.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

@@
struct net_device* dev;
@@

-kfree(dev)
+free_netdev(dev)

Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agosmsc911x: Add MODULE_ALIAS()
Vincent Stehlé [Mon, 27 Sep 2010 01:50:05 +0000 (18:50 -0700)]
smsc911x: Add MODULE_ALIAS()

This enables auto loading for the smsc911x ethernet driver.

Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonet: reset skb queue mapping when rx'ing over tunnel
Tom Herbert [Thu, 23 Sep 2010 11:19:54 +0000 (11:19 +0000)]
net: reset skb queue mapping when rx'ing over tunnel

Reset queue mapping when an skb is reentering the stack via a tunnel.
On second pass, the queue mapping from the original device is no
longer valid.

Signed-off-by: Tom Herbert <therbert@google.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agobr2684: fix scheduling while atomic
Karl Hiramoto [Thu, 23 Sep 2010 01:50:54 +0000 (01:50 +0000)]
br2684: fix scheduling while atomic

You can't call atomic_notifier_chain_unregister() while in atomic context.

Fix, call un/register_atmdevice_notifier in module __init and __exit.

Bug report:
http://comments.gmane.org/gmane.linux.network/172603

Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Tested-by: Mikko Vinni <mmvinni@yahoo.com>
Signed-off-by: Karl Hiramoto <karl@hiramoto.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoTOMOYO: Don't abuse sys_getpid(), sys_getppid()
Ben Hutchings [Sun, 26 Sep 2010 04:55:13 +0000 (05:55 +0100)]
TOMOYO: Don't abuse sys_getpid(), sys_getppid()

System call entry functions sys_*() are never to be called from
general kernel code.  The fact that they aren't declared in header
files should have been a clue.  These functions also don't exist on
Alpha since it has sys_getxpid() instead.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
13 years agode2104x: fix TP link detection
Ondrej Zary [Sat, 25 Sep 2010 10:39:17 +0000 (10:39 +0000)]
de2104x: fix TP link detection

Compex FreedomLine 32 PnP-PCI2 cards have only TP and BNC connectors but the
SROM contains AUI port too. When TP loses link, the driver switches to
non-existing AUI port (which reports that carrier is always present).

Connecting TP back generates LinkPass interrupt but de_media_interrupt() is
broken - it only updates the link state of currently connected media, ignoring
the fact that LinkPass and LinkFail bits of MacStatus register belong to the
TP port only (the chip documentation says that).

This patch changes de_media_interrupt() to switch media to TP when link goes
up (and media type is not locked) and also to update the link state only when
the TP port is used.

Also the NonselPortActive (and also SelPortActive) bits of SIAStatus register
need to be cleared (by writing 1) after reading or they're useless.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agode2104x: fix power management
Ondrej Zary [Fri, 24 Sep 2010 23:57:02 +0000 (23:57 +0000)]
de2104x: fix power management

At least my 21041 cards come out of suspend with bus mastering disabled so
they did not work after resume(no data transferred).
After adding pci_set_master(), the driver oopsed immediately on resume -
because de_clean_rings() is called on suspend but de_init_rings() call
was missing in resume.

Also disable link (reset SIA) before sleep (de4x5 does this too).

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agommc: sdhci-s3c: fix NULL ptr access in sdhci_s3c_remove
Marek Szyprowski [Thu, 23 Sep 2010 14:22:05 +0000 (16:22 +0200)]
mmc: sdhci-s3c: fix NULL ptr access in sdhci_s3c_remove

If not all clocks have been defined in platform data, the driver will
cause a null pointer dereference when it is removed. This patch fixes
this issue.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
13 years agommc: sdhci-s3c: fix incorrect spinlock usage after merge
Marek Szyprowski [Mon, 20 Sep 2010 13:03:42 +0000 (15:03 +0200)]
mmc: sdhci-s3c: fix incorrect spinlock usage after merge

In the commit f522886e202a34a2191dd5d471b3c4d46410a9a0 a merge conflict
in the sdhci-s3c driver been fixed. However the fix used incorrect
spinlock operation - it caused a race with sdhci interrupt service. The
correct way to solve it is to use spin_lock_irqsave/irqrestore() calls.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
13 years agommc: MAINTAINERS: add myself as MMC maintainer
Chris Ball [Fri, 10 Sep 2010 16:05:24 +0000 (12:05 -0400)]
mmc: MAINTAINERS: add myself as MMC maintainer

Signed-off-by: Chris Ball <cjb@laptop.org>
Cc: Pierre Ossman <pierre-list@ossman.eu>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
13 years agopcmcia: pd6729: Fix error path
Rahul Ruikar [Sun, 26 Sep 2010 11:30:29 +0000 (17:00 +0530)]
pcmcia: pd6729: Fix error path

In error return path
call pci_disable_device() which was enabled earlier.

Signed-off-by: Rahul Ruikar <rahul.ruikar@gmail.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
13 years agoalpha: fix usp value in multithreaded coredumps
Al Viro [Sat, 25 Sep 2010 20:07:51 +0000 (21:07 +0100)]
alpha: fix usp value in multithreaded coredumps

rdusp() gives us the right value only for the current thread...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoalpha: fix hae_cache race in RESTORE_ALL
Al Viro [Sat, 25 Sep 2010 20:07:14 +0000 (21:07 +0100)]
alpha: fix hae_cache race in RESTORE_ALL

We want interrupts disabled on all paths leading to RESTORE_ALL;
otherwise, we are risking an IRQ coming between the updates of
alpha_mv->hae_cache and *alpha_mv->hae_register and set_hae()
within the IRQ getting badly confused.

RESTORE_ALL used to play with disabling IRQ itself, but that got
removed back in 2002, without making sure we had them disabled
on all paths.  It's cheaper to make sure we have them disabled than
to revert to original variant...

Remove the detritus left from that commit back in 2002; we used to
need a reload of $0 and $1 since swpipl would change those, but
doing that had become pointless when we stopped doing swpipl in
there...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Sat, 25 Sep 2010 16:51:54 +0000 (09:51 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  block: prevent merges of discard and write requests

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Sat, 25 Sep 2010 16:51:31 +0000 (09:51 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: sound/pci/rme9652: prevent reading uninitialized stack memory
  ALSA: hda - Fix auto-parse of SPDIF input of Realtek codecs
  ASoC: Fix multi-componentism
  ASoC: Fix soc-cache buffer overflow bug
  ALSA: oxygen: fix analog capture on Claro halo cards
  ALSA: hda - Add Dell Latitude E6400 model quirk
  ASoC: fix clkdev API usage in sh/migor.c

13 years agoAvoid pgoff overflow in remap_file_pages
Larry Woodman [Fri, 24 Sep 2010 16:04:48 +0000 (12:04 -0400)]
Avoid pgoff overflow in remap_file_pages

Thomas Pollet noticed that the remap_file_pages() system call in
fremap.c has a potential overflow in the first part of the if statement
below, which could cause it to process bogus input parameters.
Specifically the pgoff + size parameters could be wrap thereby
preventing the system call from failing when it should.

Reported-by: Thomas Pollet <thomas.pollet@gmail.com>
Signed-off-by: Larry Woodman <lwoodman@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Sat, 25 Sep 2010 15:57:53 +0000 (17:57 +0200)]
Merge branch 'fix/hda' into for-linus

13 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Sat, 25 Sep 2010 15:57:49 +0000 (17:57 +0200)]
Merge branch 'fix/asoc' into for-linus

13 years agoALSA: sound/pci/rme9652: prevent reading uninitialized stack memory
Dan Rosenberg [Sat, 25 Sep 2010 15:07:27 +0000 (11:07 -0400)]
ALSA: sound/pci/rme9652: prevent reading uninitialized stack memory

The SNDRV_HDSP_IOCTL_GET_CONFIG_INFO and
SNDRV_HDSP_IOCTL_GET_CONFIG_INFO ioctls in hdspm.c and hdsp.c allow
unprivileged users to read uninitialized kernel stack memory, because
several fields of the hdsp{m}_config_info structs declared on the stack
are not altered or zeroed before being copied back to the user.  This
patch takes care of it.

Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agoARM: 6409/1: davinci: map sram using MT_MEMORY_NONCACHED instead of MT_DEVICE
Santosh Shilimkar [Fri, 24 Sep 2010 06:21:05 +0000 (07:21 +0100)]
ARM: 6409/1: davinci: map sram using MT_MEMORY_NONCACHED instead of MT_DEVICE

On Davinci SRAM is mapped as MT_DEVICE becasue of the section
mapping pre-requisite instead of intended MT_MEMORY_NONCACHED

Since the section mapping limitation gets fixed with first
patch in this series, the MT_MEMORY_NONCACHED can be used now.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoARM: 6408/1: omap: Map only available sram memory
Santosh Shilimkar [Fri, 24 Sep 2010 06:19:49 +0000 (07:19 +0100)]
ARM: 6408/1: omap: Map only available sram memory

Currently we map 1 MB section while setting up SRAM on OMAPs
Regardless of the actual memory. The physical OCM RAM available
on OMAP SOCs is in order of KBs. This patch maps only available
sram and cleans up some un-necessary cpu_is_xxx checks.

Mapping un-available or non-accessible(secure) memory on the newer ARM
processor is dangerous. Because ARM CPUs can now speculatively prefetch,
we should avoid mapping any no-existing or secure memory.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoARM: 6407/1: mmu: Setup MT_MEMORY and MT_MEMORY_NONCACHED L1 entries
Santosh Shilimkar [Fri, 24 Sep 2010 06:18:22 +0000 (07:18 +0100)]
ARM: 6407/1: mmu: Setup MT_MEMORY and MT_MEMORY_NONCACHED L1 entries

This patch populates the L1 entries for MT_MEMORY and MT_MEMORY_NONCACHED
types so that at boot-up, we can map memories outside system memory
at page level granularity

Previously the mapping was limiting to section level, which creates
unnecessary additional mapping for which physical memory may not
present. On the newer ARM with speculation, this is dangerous and can
result in untraceable aborts.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoblock: prevent merges of discard and write requests
Adrian Hunter [Sat, 25 Sep 2010 10:42:55 +0000 (12:42 +0200)]
block: prevent merges of discard and write requests

Add logic to prevent two I/O requests being merged if
only one of them is a discard.  Ditto secure discard.

Without this fix, it is possible for write requests
to transform into discard requests.  For example:

  Submit bio 1 to discard 8 sectors from sector n
  Submit bio 2 to write 8 sectors from sector n + 16
  Submit bio 3 to write 8 sectors from sector n + 8

Bio 1 becomes request 1.  Bio 2 becomes request 2.
Bio 3 is merged with request 2, and then subsequently
request 2 is merged with request 1 resulting in just
one I/O request which discards all 24 sectors.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
(Moved the checks above the position checks /Jens)

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
13 years agoMerge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
Russell King [Sat, 25 Sep 2010 09:27:50 +0000 (10:27 +0100)]
Merge branch 'fix' of git://git./linux/kernel/git/ycmiao/pxa-linux-2.6

13 years agode2104x: disable autonegotiation on broken hardware
Ondrej Zary [Thu, 23 Sep 2010 10:59:18 +0000 (10:59 +0000)]
de2104x: disable autonegotiation on broken hardware

At least on older 21041-AA chips (mine is rev. 11), TP duplex autonegotiation
causes the card not to work at all (link is up but no packets are transmitted).

de4x5 disables autonegotiation completely. But it seems to work on newer
(21041-PA rev. 21) so disable it only on rev<20 chips.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonet: fix a lockdep splat
Eric Dumazet [Wed, 22 Sep 2010 12:43:39 +0000 (12:43 +0000)]
net: fix a lockdep splat

We have for each socket :

One spinlock (sk_slock.slock)
One rwlock (sk_callback_lock)

Possible scenarios are :

(A) (this is used in net/sunrpc/xprtsock.c)
read_lock(&sk->sk_callback_lock) (without blocking BH)
<BH>
spin_lock(&sk->sk_slock.slock);
...
read_lock(&sk->sk_callback_lock);
...

(B)
write_lock_bh(&sk->sk_callback_lock)
stuff
write_unlock_bh(&sk->sk_callback_lock)

(C)
spin_lock_bh(&sk->sk_slock)
...
write_lock_bh(&sk->sk_callback_lock)
stuff
write_unlock_bh(&sk->sk_callback_lock)
spin_unlock_bh(&sk->sk_slock)

This (C) case conflicts with (A) :

CPU1 [A]                         CPU2 [C]
read_lock(callback_lock)
<BH>                             spin_lock_bh(slock)
<wait to spin_lock(slock)>
                                 <wait to write_lock_bh(callback_lock)>

We have one problematic (C) use case in inet_csk_listen_stop() :

local_bh_disable();
bh_lock_sock(child); // spin_lock_bh(&sk->sk_slock)
WARN_ON(sock_owned_by_user(child));
...
sock_orphan(child); // write_lock_bh(&sk->sk_callback_lock)

lockdep is not happy with this, as reported by Tetsuo Handa

It seems only way to deal with this is to use read_lock_bh(callbacklock)
everywhere.

Thanks to Jarek for pointing a bug in my first attempt and suggesting
this solution.

Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Jarek Poplawski <jarkao2@gmail.com>
Tested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groec...
Linus Torvalds [Sat, 25 Sep 2010 02:09:20 +0000 (19:09 -0700)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
  x86/hwmon: pkgtemp has no dependency on PCI
  MAINTAINERS: Update hwmon entry
  x86/hwmon: register alternate sibling upon CPU removal
  x86/hwmon: fix initialization of pkgtemp
  x86/hwmon: fix initialization of coretemp
  x86/hwmon: don't leak device attribute file from pkgtemp_probe() and pkgtemp_remove()
  x86/hwmon: avoid deadlock on CPU removal in pkgtemp
  x86/hwmon: fix module init for hotplug-but-no-device-found case
  hwmon: (lis3) Fix Oops with NULL platform data

13 years agoMerge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux...
Linus Torvalds [Sat, 25 Sep 2010 02:08:39 +0000 (19:08 -0700)]
Merge branch 'stable' of git://git./linux/kernel/git/cmetcalf/linux-tile

* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  arch/tile: remove dead code from intvec_32.S

13 years agoARM: pxa: remove pr_<level> uses of KERN_<level>
Joe Perches [Sun, 12 Sep 2010 05:10:49 +0000 (22:10 -0700)]
ARM: pxa: remove pr_<level> uses of KERN_<level>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>