linux-stable.git/drivers/char, branch linux-4.5.y

hwrng: exynos - Fix unbalanced PM runtime put on timeout error path

2016-06-08T01:18:48+00:00

commit f1925d78d7b710a1179828d53e918295f5f5d222 upstream.

In case of timeout during read operation, the exit path lacked PM
runtime put. This could lead to unbalanced runtime PM usage counter thus
leaving the device in an active state.

Fixes: d7fd6075a205 ("hwrng: exynos - Add timeout for waiting on init done")
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Herbert Xu 
Signed-off-by: Greg Kroah-Hartman

tpm: fix: set continueSession attribute for the unseal operation

2016-05-04T21:49:15+00:00

commit c0b5eed110dcf520aadafefbcc40658cbdd18b95 upstream.

It's better to set the continueSession attribute for the unseal
operation so that the session object is not removed as a side-effect
when the operation is successful. Since a user process created the
session, it should be also decide when the session is destroyed.

Signed-off-by: Jarkko Sakkinen 
Fixes: 5beb0c435b ("keys, trusted: seal with a TPM2 authorization policy")
Signed-off-by: Greg Kroah-Hartman

tpm: fix checks for policy digest existence in tpm2_seal_trusted()

2016-05-04T21:49:15+00:00

commit f3c82ade7c59303167d56b0be3e0707751fc45e2 upstream.

In my original patch sealing with policy was done with dynamically
allocated buffer that I changed later into an array so the checks in
tpm2-cmd.c became invalid. This patch fixes the issue.

Fixes: 5beb0c435bdd ("keys, trusted: seal with a TPM2 authorization policy")
Reported-by: Dan Carpenter 
Signed-off-by: Jarkko Sakkinen 
Acked-by: Peter Huewe 
Signed-off-by: Greg Kroah-Hartman

tpm: fix the cleanup of struct tpm_chip

2016-04-12T14:33:26+00:00

commit 8e0ee3c9faed7ca68807ea45141775856c438ac0 upstream.

If the initialization fails before tpm_chip_register(), put_device()
will be not called, which causes release callback not to be called.
This patch fixes the issue by adding put_device() to devres list of
the parent device.

Fixes: 313d21eeab ("tpm: device class for tpm")
Signed-off-by: Jarkko Sakkinen 
Reviewed-by: Jason Gunthorpe 
Signed-off-by: Greg Kroah-Hartman

tpm_eventlog.c: fix binary_bios_measurements

2016-04-12T14:33:26+00:00

commit 186d124f07da193a8f47e491af85cb695d415f2f upstream.

The commit 0cc698af36ff ("vTPM: support little endian guests") copied
the event, but without the event data, did an endian conversion on the
size and tried to output the event data from the copied version, which
has only have one byte of the data, resulting in garbage event data.

[jarkko.sakkinen@linux.intel.com: fixed minor coding style issues and
 renamed the local variable tempPtr as temp_ptr now that there is an
 excuse to do this.]

Signed-off-by: Harald Hoyer 
Fixes: 0cc698af36ff ("vTPM: support little endian guests")
Reviewed-by: Jarkko Sakkinen 
Signed-off-by: Greg Kroah-Hartman

tpm_crb: tpm2_shutdown() must be called before tpm_chip_unregister()

2016-04-12T14:33:26+00:00

commit 99cda8cb4639de81cde785b5bab9bc52e916e594 upstream.

Wrong call order.

Reported-by: Jason Gunthorpe 
Fixes: 74d6b3ceaa17
Signed-off-by: Jarkko Sakkinen 
Signed-off-by: Greg Kroah-Hartman

tpm: fix the rollback in tpm_chip_register()

2016-04-12T14:33:26+00:00

commit 72c91ce8523ae5828fe5e4417ae0aaab53707a08 upstream.

Fixed the rollback and gave more self-documenting names for the
functions.

Fixes: d972b0523f ("tpm: fix call order in tpm-chip.c")
Signed-off-by: Jarkko Sakkinen 
Reviewed-by: Jason Gunthorpe 
Signed-off-by: Greg Kroah-Hartman

drivers: char: random: add get_random_long()

2016-02-27T18:28:52+00:00

Commit d07e22597d1d ("mm: mmap: add new /proc tunable for mmap_base
ASLR") added the ability to choose from a range of values to use for
entropy count in generating the random offset to the mmap_base address.

The maximum value on this range was set to 32 bits for 64-bit x86
systems, but this value could be increased further, requiring more than
the 32 bits of randomness provided by get_random_int(), as is already
possible for arm64.  Add a new function: get_random_long() which more
naturally fits with the mmap usage of get_random_int() but operates
exactly the same as get_random_int().

Also, fix the shifting constant in mmap_rnd() to be an unsigned long so
that values greater than 31 bits generate an appropriate mask without
overflow.  This is especially important on x86, as its shift instruction
uses a 5-bit mask for the shift operand, which meant that any value for
mmap_rnd_bits over 31 acts as a no-op and effectively disables mmap_base
randomization.

Finally, replace calls to get_random_int() with get_random_long() where
appropriate.

This patch (of 2):

Add get_random_long().

Signed-off-by: Daniel Cashman 
Acked-by: Kees Cook 
Cc: "Theodore Ts'o" 
Cc: Arnd Bergmann 
Cc: Greg Kroah-Hartman 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Ralf Baechle 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Michael Ellerman 
Cc: David S. Miller 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: H. Peter Anvin 
Cc: Al Viro 
Cc: Nick Kralevich 
Cc: Jeff Vander Stoep 
Cc: Mark Salyzyn 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

hpet: Drop stale URLs

2016-02-17T08:39:56+00:00

Looks like the HPET spec at intel.com got moved.
It isn't hard to find so drop the link, just mention
the revision assumed.

Suggested-by: Thomas Gleixner 
Signed-off-by: Michael S. Tsirkin 
Acked-by: Greg Kroah-Hartman 
Cc: Arnd Bergmann 
Cc: Clemens Ladisch 
Cc: Jonathan Corbet 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: linux-doc@vger.kernel.org
Link: http://lkml.kernel.org/r/1455145462-3877-1-git-send-email-mst@redhat.com
Signed-off-by: Ingo Molnar

Merge tag 'for-linus-4.5-2' of git://git.code.sf.net/p/openipmi/linux-ipmi

2016-02-03T18:04:58+00:00

Pull IPMI fix from Corey Minyard:
 "Fix a compile error on IPMI when ACPI is disabled"

* tag 'for-linus-4.5-2' of git://git.code.sf.net/p/openipmi/linux-ipmi:
  ipmi: put acpi.h with the other headers