Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
[v2]
- Do instruction interleaving another way to avoid adding new FPU<=>CPU
register moves as these cause performance drop on Bulldozer.
- Improvements to round-key variable rotation handling.
- Further interleaving improvements for better out-of-order scheduling.
Cc: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
[v2]
- Do instruction interleaving another way to avoid adding new FPU<=>CPU
register moves as these cause performance drop on Bulldozer.
- Improvements to round-key variable rotation handling.
- Further interleaving improvements for better out-of-order scheduling.
Cc: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
[v2]
- Do instruction interleaving another way to avoid adding new FPU<=>CPU
register moves as these cause performance drop on Bulldozer.
- Further interleaving improvements for better out-of-order scheduling.
Tested-by: Borislav Petkov <bp@alien8.de> Cc: Johannes Goetzfried <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add assembler versions of AES and SHA1 for ARM platforms. This has provided
up to a 50% improvement in IPsec/TCP throughout for tunnels using AES128/SHA1.
Platform CPU SPeed Endian Before (bps) After (bps) Improvement
Signed-off-by: Ben Collins <ben.c@servergy.com> Cc: Yuan Kang <Yuan.Kang@freescale.com> Acked-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Simon Derr [Fri, 10 Aug 2012 13:52:06 +0000 (15:52 +0200)]
net/9p: Check errno validity
While working on a modified server I had the Linux clients crash
a few times. This lead me to find this:
Some error codes are directly extracted from the server replies.
A malformed server reply could contain an invalid error code, with a
very large value. If this value is then passed to ERR_PTR() it will
not be properly detected as an error code by IS_ERR() and as a result
the kernel will dereference an invalid pointer.
This patch tries to avoid this.
Signed-off-by: Simon Derr <simon.derr@bull.net> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Jim Meyering [Tue, 21 Aug 2012 07:20:49 +0000 (09:20 +0200)]
fs/9p: avoid debug OOPS when reading a long symlink
Reading a symlink longer than the given buffer, a p9_debug use would
try to print the link name (not NUL-terminated) using a %s format.
Use %.*s instead, and replace the strncpy+strnlen with functionally
equivalent strlen+memcpy.
Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC bug fixes from Olof Johansson:
"Mostly Renesas and Atmel bugfixes this time, targeting boot and build
problems. A couple of patches for gemini and kirkwood as well. On a
whole nothing very controversial."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: gemini: fix the gemini build
ARM: shmobile: armadillo800eva: enable rw rootfs mount
ARM: Kirkwood: Fix 'SZ_1M' undeclared here for db88f6281-bp-setup.c
ARM: shmobile: mackerel: fixup usb module order
ARM: shmobile: armadillo800eva: fixup: sound card detection order
ARM: shmobile: marzen: fixup smsc911x id for regulator
ARM: at91/feature-removal-schedule: delay at91_mci removal
ARM: mach-shmobile: armadillo800eva: Enable power button as wakeup source
ARM: mach-shmobile: armadillo800eva: Fix GPIO buttons descriptions
ARM: at91/dts: remove partial parameter in at91sam9g25ek.dts
ARM: at91/clock: fix PLLA overclock warning
ARM: at91: fix rtc-at91sam9 irq issue due to sparse irq support
ARM: at91: fix system timer irq issue due to sparse irq support
ARM: shmobile: sh73a0: fixup RELOC_BASE of intca_irq_pins_desc
kobject: fix oops with "input0: bad kobj_uevent_env content in show_uevent()"
Fengguang Wu <fengguang.wu@intel.com> writes:
> After the __devinit* removal series, I can still get kernel panic in
> show_uevent(). So there are more sources of bug..
>
> Debug patch:
>
> @@ -343,8 +343,11 @@ static ssize_t show_uevent(struct device
> goto out;
>
> /* copy keys to file */
> - for (i = 0; i < env->envp_idx; i++)
> + dev_err(dev, "uevent %d env[%d]: %s/.../%s\n", env->buflen, env->envp_idx, top_kobj->name, dev->kobj.name);
> + for (i = 0; i < env->envp_idx; i++) {
> + printk(KERN_ERR "uevent %d env[%d]: %s\n", (int)count, i, env->envp[i]);
> count += sprintf(&buf[count], "%s\n", env->envp[i]);
> + }
>
> Oops message, the env[] is again not properly initilized:
>
> [ 44.068623] input input0: uevent 61 env[805306368]: input0/.../input0
> [ 44.069552] uevent 0 env[0]: (null)
This is a completely different CONFIG_HOTPLUG problem, only
demonstrating another reason why CONFIG_HOTPLUG should go away. I had a
hard time trying to disable it anyway ;-)
The problem this time is lots of code assuming that a call to
add_uevent_var() will guarantee that env->buflen > 0. This is not true
if CONFIG_HOTPLUG is unset. So things like this end up overwriting
env->envp_idx because the array index is -1:
if (add_uevent_var(env, "MODALIAS="))
return -ENOMEM;
len = input_print_modalias(&env->buf[env->buflen - 1],
sizeof(env->buf) - env->buflen,
dev, 0);
Don't know what the best action is, given that there seem to be a *lot*
of this around the kernel. This patch "fixes" the problem for me, but I
don't know if it can be considered an appropriate fix.
[ It is the correct fix for now, for 3.7 forcing CONFIG_HOTPLUG to
always be on is the longterm fix, but it's too late for 3.6 and older
kernels to resolve this that way - gregkh ]
Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull a hwmon fix from Guenter Roeck:
"One patch, fixing DIV_ROUND_CLOSEST to support negative dividends.
While the changes are not in the drivers/hwmon directory, the problem
primarily affects hwmon drivers, and it makes sense to push the patch
through the hwmon tree."
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
linux/kernel.h: Fix DIV_ROUND_CLOSEST to support negative dividends
Merge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild fixes from Michal Marek:
"These are two fixes that should go into 3.6. The link-vmlinux.sh one
is obvious.
The other one fixes make firmware_install with certain configurations,
where a file in the toplevel firmware tree gets installed first, and
$(INSTALL_FW_PATH)/$$(dir <file>) results in /lib/firmware/./, which
confuses make 3.82 for some reason."
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
firmware: fix directory creation rule matching with make 3.82
link-vmlinux.sh: Fix stray "echo" in error message
Trond Myklebust [Sun, 26 Aug 2012 18:44:43 +0000 (11:44 -0700)]
NFSv4: Fix buffer overflow checking in __nfs4_get_acl_uncached
Pass the checks made by decode_getacl back to __nfs4_get_acl_uncached
so that it knows if the acl has been truncated.
The current overflow checking is broken, resulting in Oopses on
user-triggered nfs4_getfacl calls, and is opaque to the point
where several attempts at fixing it have failed.
This patch tries to clean up the code in addition to fixing the
Oopses by ensuring that the overflow checks are performed in
a single place (decode_getacl). If the overflow check failed,
we will still be able to report the acl length, but at least
we will no longer attempt to cache the acl or copy the
truncated contents to user space.
Ian Abbott [Wed, 5 Sep 2012 16:44:31 +0000 (17:44 +0100)]
UDF: Add support for O_DIRECT
Add support for the O_DIRECT flag. There are two cases to deal with:
1. Small files stored in the ICB (inode control block?): just return 0
from the new udf_adinicb_direct_IO() handler to fall back to buffered
I/O.
2. Larger files, not stored in the ICB: nothing special here. Just call
blockdev_direct_IO() from our new udf_direct_IO() handler and tidy up
any blocks instantiated outside i_size on error. This is pretty
standard. Factor error handling code out of udf_write_begin() into new
function udf_write_failed() so it can also be called by udf_direct_IO().
Also change the whitespace in udf_aops to make it a bit neater.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Jan Kara <jack@suse.cz>
Jan Kara [Wed, 5 Sep 2012 20:55:11 +0000 (16:55 -0400)]
GFS2: Get rid of I_MUTEX_QUOTA usage
GFS2 uses i_mutex on its system quota inode to synchronize writes to
quota file. Since this is an internal inode to GFS2 (not part of directory
hiearchy or visible by user) we are safe to define locking rules for it. So
let's just get it its own locking class to make it clear.
Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>