Commit Graph

547726 Commits

Author SHA1 Message Date
Borislav Petkov fe055896c0 x86/microcode: Merge the early microcode loader
Merge the early loader functionality into the driver proper. The
diff is huge but logically, it is simply moving code from the
_early.c files into the main driver.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1445334889-300-3-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-21 11:22:12 +02:00
Borislav Petkov 9a2bc335f1 x86/microcode: Unmodularize the microcode driver
Make CONFIG_MICROCODE a bool. It was practically a bool already anyway,
since early loader was forcing it to =y.

Regardless, there's no real reason to have something be a module which
gets built-in on the majority of installations out there. And its not
like there's noticeable change in functionality - we still can load late
microcode - just the module glue disappears.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1445334889-300-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-21 11:22:11 +02:00
Andi Kleen 81ffdcdd97 x86/mce: Fix thermal throttling reporting after kexec
The per CPU thermal vector init code checks if the thermal
vector is already installed and complains and bails out if it
is.

This happens after kexec, as kernel shut down does not clear the
thermal vector APIC register.

This causes two problems:

1. So we always do not fully initialize thermal reports after
   kexec. The CPU is still likely initialized, as the previous
   kernel should have done it. But we don't set up the software
   pointer to the thermal vector, so reporting may end up with a
   unknown thermal interrupt message.

2. Also it complains for every logical CPU, even though the
   value is actually derived from BP only.

The problem is that we end up with one message per CPU, so on
larger systems it becomes very noisy and messes up the otherwise
nicely formatted CPU bootup numbers in the kernel log.

Just remove the check. I checked the code and there's no valid
code paths where the thermal init code for a CPU could be called
multiple times.

Why the kernel does not clean up this value on shutdown:

The thermal monitoring is controlled per logical CPU thread.
Normal shutdown code is just running on one CPU. To disable it
we would need a broadcast NMI to all CPUs on shut down. That's
overkill for this. So we just ignore it after kexec.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1445246268-26285-9-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-21 11:10:57 +02:00
Borislav Petkov 53b90c0c56 kexec/crash: Say which char is the unrecognized
It is helpful when the crashkernel cmdline parsing routines
actually say which character is the unrecognized one. Make them
do so.

Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Young <dyoung@redhat.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Baoquan He <bhe@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: WANG Chao <chaowang@redhat.com>
Cc: jerry_hoemann@hp.com
Link: http://lkml.kernel.org/r/1445246268-26285-8-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-21 11:10:57 +02:00
Borislav Petkov 6f3760570e x86/setup/crash: Check memblock_reserve() retval
memblock_reserve() can fail but the crashkernel reservation code
doesn't check that and this can lead the user into believing
that the crashkernel region was actually reserved. Make sure we
check that return value and we exit early with a failure message
in the error case.

Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Young <dyoung@redhat.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Chao <chaowang@redhat.com>
Cc: jerry_hoemann@hp.com
Link: http://lkml.kernel.org/r/1445246268-26285-7-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-21 11:10:56 +02:00
Borislav Petkov f56d55781c x86/setup/crash: Cleanup some more
* Remove unused auto_set variable
* Cleanup local function variable declarations
* Reformat printk string and use pr_info()

No functionality change.

Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Young <dyoung@redhat.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Chao <chaowang@redhat.com>
Cc: jerry_hoemann@hp.com
Link: http://lkml.kernel.org/r/1445246268-26285-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-21 11:10:56 +02:00
Borislav Petkov 606134f77c x86/setup/crash: Remove alignment variable
Use a macro instead. No functionality change.

Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Young <dyoung@redhat.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Chao <chaowang@redhat.com>
Cc: jerry_hoemann@hp.com
Link: http://lkml.kernel.org/r/1445246268-26285-5-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-21 11:10:56 +02:00
Borislav Petkov 97eac21bab x86/setup: Cleanup crashkernel reservation functions
* Shorten variable names
* Realign code, space out for better readability

No code changed:

  # arch/x86/kernel/setup.o:

   text    data     bss     dec     hex filename
   4543    3096   69904   77543   12ee7 setup.o.before
   4543    3096   69904   77543   12ee7 setup.o.after

md5:
   8a1b7c6738a553ca207b56bd84a8f359  setup.o.before.asm
   8a1b7c6738a553ca207b56bd84a8f359  setup.o.after.asm

Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Young <dyoung@redhat.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Chao <chaowang@redhat.com>
Cc: jerry_hoemann@hp.com
Link: http://lkml.kernel.org/r/1445246268-26285-4-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-21 11:10:56 +02:00
Aravind Gopalakrishnan 1a6775c1a2 x86/amd_nb, EDAC: Rename amd_get_node_id()
This function doesn't give us the "Node ID" as the function name
suggests. Rather, it receives a PCI device as argument, checks
the available F3 PCI device IDs in the system and returns the
index of the matching Bus/Device IDs.

Rename it to amd_pci_dev_to_node_id().

No functional change is introduced.

Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1445246268-26285-3-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-21 11:10:55 +02:00
Baoquan He eb6db83d10 x86/setup: Do not reserve crashkernel high memory if low reservation failed
People reported that when allocating crashkernel memory using
the ",high" and ",low" syntax, there were cases where the
reservation of the high portion succeeds but the reservation of
the low portion fails.

Then kexec can load the kdump kernel successfully, but booting
the kdump kernel fails as there's no low memory.

The low memory allocation for the kdump kernel can fail on large
systems for a couple of reasons. For example, the manually
specified crashkernel low memory can be too large and thus no
adequate memblock region would be found.

Therefore, we try to reserve low memory for the crash kernel
*after* the high memory portion has been allocated. If that
fails, we free crashkernel high memory too and return. The user
can then take measures accordingly.

Tested-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Baoquan He <bhe@redhat.com>
[ Massage text. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Young <dyoung@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Chao <chaowang@redhat.com>
Cc: jerry_hoemann@hp.com
Cc: yinghai@kernel.org
Link: http://lkml.kernel.org/r/1445246268-26285-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-21 11:10:55 +02:00
Borislav Petkov 0399f73299 x86/microcode/amd: Do not overwrite final patch levels
A certain number of patch levels of applied microcode should not
be overwritten by the microcode loader, otherwise bad things
will happen.

Check those and abort update if the current core has one of
those final patch levels applied by the BIOS. 32-bit needs
special handling, of course.

See https://bugzilla.suse.com/show_bug.cgi?id=913996 for more
info.

Tested-by: Peter Kirchgeßner <pkirchgessner@t-online.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1444641762-9437-7-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-12 16:15:48 +02:00
Borislav Petkov 2eff73c0a1 x86/microcode/amd: Extract current patch level read to a function
Pave the way for checking the current patch level of the
microcode in a core. We want to be able to do stuff depending on
the patch level - in this case decide whether to update or not.
But that will be added in a later patch.

Drop unused local var uci assignment, while at it.

Integrate a fix for 32-bit and CONFIG_PARAVIRT from Takashi Iwai:

 Use native_rdmsr() in check_current_patch_level() because with
 CONFIG_PARAVIRT enabled and on 32-bit, where we run before
 paging has been enabled, we cannot deref pv_info yet. Or we
 could, but we'd need to access its physical address. This way of
 fixing it is simpler. See:

   https://bugzilla.suse.com/show_bug.cgi?id=943179 for the background.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Takashi Iwai <tiwai@suse.com>:
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1444641762-9437-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-12 16:15:48 +02:00
Aravind Gopalakrishnan fa20a2ed6f x86/ras/mce_amd_inj: Inject bank 4 errors on the NBC
Bank 4 MCEs are logged and reported only on the node base core
(NBC) in a socket. Refer to the D18F3x44[NbMcaToMstCpuEn] field
in Fam10h and later BKDGs. The node base core (NBC) is the
lowest numbered core in the node.

This patch ensures that we inject the error on the NBC for bank
4 errors. Otherwise, triggering #MC or APIC interrupts on a core
which is not the NBC would not have any effect on the system,
i.e. we would not see any relevant output on kernel logs for the
error we just injected.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Cleanup comments. ]
[ Add a missing dependency on AMD_NB caught by Randy Dunlap. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1443190851-2172-4-git-send-email-Aravind.Gopalakrishnan@amd.com
Link: http://lkml.kernel.org/r/1444641762-9437-5-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-12 16:15:48 +02:00
Aravind Gopalakrishnan a1300e5052 x86/ras/mce_amd_inj: Trigger deferred and thresholding errors interrupts
Add the capability to trigger deferred error interrupts and
threshold interrupts in order to test the APIC interrupt handler
functionality for these type of errors.

Update README section about the same too.

Reported by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Cleanup comments. ]
[ Include asm/irq_vectors.h directly so that misc randbuilds don't fail. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1443190851-2172-3-git-send-email-Aravind.Gopalakrishnan@amd.com
Link: http://lkml.kernel.org/r/1444641762-9437-4-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-12 16:15:47 +02:00
Aravind Gopalakrishnan 85c9306d44 x86/ras/mce_amd_inj: Return early on invalid input
Invalid inputs such as these are currently reported in dmesg as
failing:

  $> echo sweet > flags
  [  122.079139] flags_write: Invalid flags value: et

even though the 'flags' attribute has been updated correctly:

  $> cat flags
  sw

This is because userspace keeps writing the remaining buffer
until it encounters an error.

However, the input as a whole is wrong and we should not be
writing anything to the file. Therefore, correct flags_write()
to return -EINVAL immediately on bad input strings.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1443190851-2172-2-git-send-email-Aravind.Gopalakrishnan@amd.com
Link: http://lkml.kernel.org/r/1444641762-9437-3-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-12 16:15:47 +02:00
Ingo Molnar cdbcd239e2 Merge branch 'x86/ras' into ras/core, to pick up changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-12 14:52:34 +02:00
Gabriel Laskar 7e0abcd6b7 x86/mce: Include linux/ioctl.h in uapi mce header
asm/ioctls.h contains definition for termios, not just the _IO* macros.

This error was found with a tool in development used to generate
automated pretty-printing functions for ioctl decoding in strace.

Signed-off-by: Gabriel Laskar <gabriel@lse.epita.fr>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1444141657-14898-2-git-send-email-gabriel@lse.epita.fr
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-11 21:24:27 +02:00
Linus Torvalds 25cb62b764 Linux 4.3-rc5 2015-10-11 11:09:45 -07:00
Linus Torvalds 9a78f9c3c6 Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
 "Fix a long standing state race in finish_task_switch()"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/core: Fix TASK_DEAD race in finish_task_switch()
2015-10-11 10:24:32 -07:00
Linus Torvalds 7cbbab00cb Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Thomas Glexiner:
 "Fix build breakage on powerpc in perf tools"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools: Fix build break on powerpc due to sample_reg_masks
2015-10-11 10:23:52 -07:00
Linus Torvalds a145164ba8 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull maintainer email update from Thomas Gleixner:
 "Change Matt Fleming's email address in the maintainers file"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  MAINTAINERS: Change Matt Fleming's email address
2015-10-11 10:23:00 -07:00
Linus Torvalds e3d6e0e701 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
 "Three trivial commits:

   - Fix a kerneldoc regression

   - Export handle_bad_irq to unbreak a driver in next

   - Add an accessor for the of_node field so refactoring in next does
     not depend on merge ordering"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqdomain: Add an accessor for the of_node field
  genirq: Fix handle_bad_irq kerneldoc comment
  genirq: Export handle_bad_irq
2015-10-11 10:16:59 -07:00
Linus Torvalds 5a433f7a6b SCSI fixes on 20151010
This is a set of three bug fixes, two of which are regressions from recent
 updates (the 3ware one from 4.1 and the device handler fixes from 4.2).
 
 Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a set of three bug fixes, two of which are regressions from
  recent updates (the 3ware one from 4.1 and the device handler fixes
  from 4.2)"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  3w-9xxx: don't unmap bounce buffered commands
  scsi_dh: Use the correct module name when loading device handler
  libiscsi: Fix iscsi_check_transport_timeouts possible infinite loop
2015-10-11 10:02:30 -07:00
Linus Torvalds f24fe98df8 One bug fix for raid1/raid10.
Very careless bug earler in 4.3-rc, now fixed :-)
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Merge tag 'md/4.3-rc4-fix' of git://neil.brown.name/md

Pull md bugfix from Neil Brown:
 "One bug fix for raid1/raid10.

  Very careless bug earler in 4.3-rc, now fixed :-)"

* tag 'md/4.3-rc4-fix' of git://neil.brown.name/md:
  crash in md-raid1 and md-raid10 due to incorrect list manipulation
2015-10-11 09:35:51 -07:00
Matt Fleming 825fcfce81 MAINTAINERS: Change Matt Fleming's email address
My Intel email address will soon expire. Replace it with my
personal address so people still know where to send patches.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1444494136-10333-1-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-11 09:54:29 +02:00
Linus Torvalds 4a06c8ac2f USB fixes for 4.3-rc5
Here are some small USB and PHY fixes and quirk updates for 4.3-rc5.
 Nothing major here, full details in the shortlog, and all of these have
 been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB and PHY fixes and quirk updates for 4.3-rc5.

  Nothing major here, full details in the shortlog, and all of these
  have been in linux-next for a while"

* tag 'usb-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: Add device quirk for Logitech PTZ cameras
  USB: chaoskey read offset bug
  USB: Add reset-resume quirk for two Plantronics usb headphones.
  usb: renesas_usbhs: Add support for R-Car H3
  usb: renesas_usbhs: fix build warning if 64-bit architecture
  usb: gadget: bdc: fix memory leak
  phy: berlin-sata: Fix module autoload for OF platform driver
  phy: rockchip-usb: power down phy when rockchip phy probe
  phy: qcom-ufs: fix build error when the component is built as a module
2015-10-10 11:17:45 -07:00
Linus Torvalds 97d0c931c0 TTY/Serial driver fixes for 4.3-rc5
Here are a few bug fixes for the tty core that resolve reported issues,
 and some serial driver fixes as well (including the much-reported imx
 driver problem.)
 
 All of these have been in linux-next with no reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver fixes from Greg KH:
 "Here are a few bug fixes for the tty core that resolve reported
  issues, and some serial driver fixes as well (including the
  much-reported imx driver problem)

  All of these have been in linux-next with no reported problems"

* tag 'tty-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  drivers/tty: require read access for controlling terminal
  serial: 8250: add uart_config entry for PORT_RT2880
  tty: fix data race on tty_buffer.commit
  tty: fix data race in tty_buffer_flush
  tty: fix data race in flush_to_ldisc
  tty: fix stall caused by missing memory barrier in drivers/tty/n_tty.c
  serial: atmel: fix error path of probe function
  tty: don't leak cdev in tty_cdev_add()
  Revert "serial: imx: remove unbalanced clk_prepare"
2015-10-10 11:09:55 -07:00
Linus Torvalds 91dbc047e9 Staging fixes for 4.3-rc5
Here are two tiny staging tree fixes for 4.3-rc5.
 
 One fixes the broken speakup subsystem as reported by a user, and the
 other removes an entry in the MAINTAINERS file for a developer that
 doesn't want to be listed anymore.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging fixes from Greg KH:
 "Here are two tiny staging tree fixes for 4.3-rc5.

  One fixes the broken speakup subsystem as reported by a user, and the
  other removes an entry in the MAINTAINERS file for a developer that
  doesn't want to be listed anymore"

* tag 'staging-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: speakup: fix speakup-r regression
  MAINTAINERS: Remove myself as nvec co-maintainer
2015-10-10 11:03:31 -07:00
Linus Torvalds ef19df60c9 Char/Misc driver fixes for 4.3-rc5
Here are some small fixes for some misc drivers that resolve some
 reported issues.  All of these have been linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small fixes for some misc drivers that resolve some
  reported issues.  All of these have been linux-next for a while"

* tag 'char-misc-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  mcb: Fix error handling in mcb_pci_probe()
  mei: hbm: fix error in state check logic
  nvmem: sunxi: Check for memory allocation failure
  nvmem: core: Fix memory leak in nvmem_cell_write
  nvmem: core: Handle shift bits in-place if cell->nbits is non-zero
  nvmem: core: fix the out-of-range leak in read/write()
2015-10-10 10:58:27 -07:00
Linus Torvalds bbecce8d76 Merge git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:

 - MIPS didn't define the new ioremap_uc.  Defined it as an alias for
   ioremap_uncached.

 - Replace workaround for MIPS16 build issue with a correct one.

* git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: Define ioremap_uc
  MIPS: UAPI: Ignore __arch_swab{16,32,64} when using MIPS16
  Revert "MIPS: UAPI: Fix unrecognized opcode WSBH/DSBH/DSHD when using MIPS16."
2015-10-10 10:51:55 -07:00
Linus Torvalds 1d8a12d1de Merge branch 'stable/for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
Pull swiotlb fixlet from Konrad Rzeszutek Wilk:
 "Enable the SWIOTLB under 32-bit PAE kernels.

  Nowadays most distros enable this due to CONFIG_HYPERVISOR|XEN=y which
  select SWIOTLB.  But for those that are not interested in
  virtualization and wanting to use 32-bit PAE kernels and wanting to
  have working DMA operations - this configures it for them"

* 'stable/for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
  swiotlb: Enable it under x86 PAE
2015-10-10 10:31:13 -07:00
Trond Myklebust daf3761c9f namei: results of d_is_negative() should be checked after dentry revalidation
Leandro Awa writes:
 "After switching to version 4.1.6, our parallelized and distributed
  workflows now fail consistently with errors of the form:

  T34: ./regex.c:39:22: error: config.h: No such file or directory

  From our 'git bisect' testing, the following commit appears to be the
  possible cause of the behavior we've been seeing: commit 766c4cbfacd8"

Al Viro says:
 "What happens is that 766c4cbfac got the things subtly wrong.

  We used to treat d_is_negative() after lookup_fast() as "fall with
  ENOENT".  That was wrong - checking ->d_flags outside of ->d_seq
  protection is unreliable and failing with hard error on what should've
  fallen back to non-RCU pathname resolution is a bug.

  Unfortunately, we'd pulled the test too far up and ran afoul of
  another kind of staleness.  The dentry might have been absolutely
  stable from the RCU point of view (and we might be on UP, etc), but
  stale from the remote fs point of view.  If ->d_revalidate() returns
  "it's actually stale", dentry gets thrown away and the original code
  wouldn't even have looked at its ->d_flags.

  What we need is to check ->d_flags where 766c4cbfac does (prior to
  ->d_seq validation) but only use the result in cases where we do not
  discard this dentry outright"

Reported-by: Leandro Awa <lawa@nvidia.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=104911
Fixes: 766c4cbfac ("namei: d_is_negative() should be checked...")
Tested-by: Leandro Awa <lawa@nvidia.com>
Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-10-10 10:17:27 -07:00
Linus Torvalds 149fadf2ce Power management and ACPI fixes for v4.3-rc5
- Two fixes for cpufreq regressions, an acpi-cpufreq driver one
    introduced during the 4.2 cycle when we started to preserve
    cpufreq directories for offline CPUs and a general one
    introduced recently (Srinivas Pandruvada).
 
  - Two devfreq fixes, one for a double kfree() in an error code
    path and one for a confusing sysfs-related failure (Geliang Tang,
    Tobias Jakobi).
 
 /
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Merge tag 'pm+acpi-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael Wysocki:
 "These are four fixes for bugs in the devfreq and cpufreq subsystems,
  including two regression fixes (one for a recent regression and one
  for a problem introduced in 4.2).

  Specifics:

   - Two fixes for cpufreq regressions, an acpi-cpufreq driver one
     introduced during the 4.2 cycle when we started to preserve cpufreq
     directories for offline CPUs and a general one introduced recently
     (Srinivas Pandruvada).

   - Two devfreq fixes, one for a double kfree() in an error code path
     and one for a confusing sysfs-related failure (Geliang Tang, Tobias
     Jakobi)"

* tag 'pm+acpi-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: prevent lockup on reading scaling_available_frequencies
  cpufreq: acpi_cpufreq: prevent crash on reading freqdomain_cpus
  PM / devfreq: fix double kfree
  PM / devfreq: Fix governor_store()
2015-10-09 18:39:04 -07:00
Linus Torvalds 71419b7b84 Merge branch 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
Pull strscpy powerpc fix from Chris Metcalf.

Fix powerpc big-endian build.

* 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  arch/powerpc: provide zero_bytemask() for big-endian
2015-10-09 18:01:26 -07:00
Linus Torvalds f4ba1cf8a4 sound fixes for 4.3-rc5
We see various small fixes, but nothing looks too scary, all are
 small gentle bug fixes:
 - Most of changes are for ASoC codecs: Realtek, SGTL5000, TAS2552,
   TLV320, WM8962
 - A couple of dwc and imx-ssi fixes
 - Usual oneliner HD-audio quirks
 - An old emux synth code fix
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Merge tag 'sound-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "We see various small fixes, but nothing looks too scary, all are small
  gentle bug fixes:

   - Most of changes are for ASoC codecs: Realtek, SGTL5000, TAS2552,
     TLV320, WM8962

   - A couple of dwc and imx-ssi fixes

   - Usual oneliner HD-audio quirks

   - An old emux synth code fix"

* tag 'sound-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  MAINTAINERS: Remove wm97xx entry
  ASoC: tas2552: fix dBscale-min declaration
  ALSA: synth: Fix conflicting OSS device registration on AWE32
  ALSA: hda - Disable power_save_node for IDT 92HD73xx chips
  ALSA: hda - Apply SPDIF pin ctl to MacBookPro 12,1
  ALSA: hda: Add dock support for ThinkPad T550
  ASoC: dwc: fix dma stop transferring issue
  ASoC: dwc: correct irq clear method
  ASoC: tlv320aic3x: Prevent writing reserved registers on tlv320aic3104 CODECs
  ASoC: rt5645: Correct the naming and setting of ADC Boost Volume Control
  ASoC: sgtl5000: fix wrong register MIC_BIAS_VOLTAGE setup on probe
  ASoC: wm8962: balance pm_runtime_enable
  ASoC: imx-ssi: Fix DAI hardware signal inversions
  ASoC: sgtl5000: fix error message output for MicBias voltage
  ASoC: db1200: Fix DAI link format for db1300 and db1550
2015-10-09 17:56:00 -07:00
Linus Torvalds fe621fdead A Samsung driver fix and a handful of TI driver fixes.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "A Samsung driver fix and a handful of TI driver fixes"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: ti: dflt: fix enable_reg validity check
  clk: ti: fix dual-registration of uart4_ick
  clk: ti: clk-7xx: Remove hardwired ABE clock configuration
  clk: samsung: fix cpu clock's flags checking
2015-10-09 17:33:15 -07:00
Linus Torvalds 8140e73614 MMC host:
- omap_hsmmc: Fix boot regressions for omap4430
  - omap_hsmmc: Fix legacy boot regression for omap3
  - sdhci-pxav3: Fix some clock issues for Armada 38x
  - sdhci-pxav3: Fix error handling at probe
  - sdhci-of-at91: Fix clock stabilization problem
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Merge tag 'mmc-v4.3-rc4' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC host:
   - omap_hsmmc: Fix boot regressions for omap4430
   - omap_hsmmc: Fix legacy boot regression for omap3
   - sdhci-pxav3: Fix some clock issues for Armada 38x
   - sdhci-pxav3: Fix error handling at probe
   - sdhci-of-at91: Fix clock stabilization problem"

* tag 'mmc-v4.3-rc4' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: sdhci-of-at91: use SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST quirk
  mmc: sdhci: add quirk SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST
  mmc: sdhci-pxav3: fix error handling of armada_38x_quirks
  mmc: sdhci-pxav3: disable clock inversion for HS MMC cards
  mmc: sdhci-pxav3: remove broken clock base quirk for Armada 38x sdhci driver
  mmc: host: omap_hsmmc: Fix MMC for omap3 legacy booting
  Revert "mmc: host: omap_hsmmc: use regulator_is_enabled to find pbias status"
2015-10-09 17:25:26 -07:00
Linus Torvalds 0444555670 3 stable@ fixes:
- DM core AB-BA deadlock fix in the device destruction path (vs device
   creation's DM table swap).
 
 - DM raid fix to properly round up the region_size to the next
   power-of-2.
 
 - DM cache fix for a NULL pointer seen while switching from the
   "cleaner" cache policy.
 
 2 fixes for regressions introduced during the 4.3 merge:
 
 - request-based DM error propagation regressed due to incorrect
   changes introduced when adding the bi_error field to bio.
 
 - DM snapshot fix to only support snapshots that overflow if the client
   (e.g. lvm2) is prepared to deal with the associated snapshot status
   interface change.
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Merge tag 'dm-4.3-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull dm fixes from Mike Snitzer:
 "Three stable fixes:

   - DM core AB-BA deadlock fix in the device destruction path (vs
     device creation's DM table swap).

   - DM raid fix to properly round up the region_size to the next
     power-of-2.

   - DM cache fix for a NULL pointer seen while switching from the
     "cleaner" cache policy.

  Two fixes for regressions introduced during the 4.3 merge:

   - request-based DM error propagation regressed due to incorrect
     changes introduced when adding the bi_error field to bio.

   - DM snapshot fix to only support snapshots that overflow if the
     client (e.g. lvm2) is prepared to deal with the associated
     snapshot status interface change"

* tag 'dm-4.3-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm snapshot: add new persistent store option to support overflow
  dm cache: fix NULL pointer when switching from cleaner policy
  dm: fix request-based dm error reporting
  dm raid: fix round up of default region size
  dm: fix AB-BA deadlock in __dm_destroy()
2015-10-09 16:58:11 -07:00
Linus Torvalds 175d58cfed Merge branch 'for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
 "These are small and assorted.  Neil's is the oldest, I dropped the
  ball thinking he was going to send it in"

* 'for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: support NFSv2 export
  Btrfs: open_ctree: Fix possible memory leak
  Btrfs: fix deadlock when finalizing block group creation
  Btrfs: update fix for read corruption of compressed and shared extents
  Btrfs: send, fix corner case for reference overwrite detection
2015-10-09 16:39:35 -07:00
Linus Torvalds 38aa0a59a6 Just one RDMA bugfix.
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Merge tag 'nfsd-4.3-1' of git://linux-nfs.org/~bfields/linux

Pull nfsd bugfix from Bruce Fields:
 "Just one RDMA bugfix"

* tag 'nfsd-4.3-1' of git://linux-nfs.org/~bfields/linux:
  svcrdma: handle rdma read with a non-zero initial page offset
2015-10-09 16:34:45 -07:00
Linus Torvalds 5163ac7637 ARM: SoC fixes for 4.3-rc4
The fixes for this week include one small patch that was years in the
 making and that finally fixes using all eight CPUs on exynos542x.
 
 The rest are lots of minor changes for sunxi, imx, exynos and shmobile
 
 * fixing the minimum voltage for Allwinner A20
 * thermal boot issue on SMDK5250.
 * invalid clock used for FIMD IOMMU.
 * audio on Renesas r8a7790/r8a7791
 * invalid clock used for FIMD IOMMU
 * LEDs on exynos5422-odroidxu3-common
 * usb pin control for imx-rex
 * imx53: fix PMIC interrupt level
 * a Makefile typo
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "The fixes for this week include one small patch that was years in the
  making and that finally fixes using all eight CPUs on exynos542x.

  The rest are lots of minor changes for sunxi, imx, exynos and shmobile

   - fixing the minimum voltage for Allwinner A20
   - thermal boot issue on SMDK5250.
   - invalid clock used for FIMD IOMMU.
   - audio on Renesas r8a7790/r8a7791
   - invalid clock used for FIMD IOMMU
   - LEDs on exynos5422-odroidxu3-common
   - usb pin control for imx-rex
   - imx53: fix PMIC interrupt level
   - a Makefile typo"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: dts: Fix wrong clock binding for sysmmu_fimd1_1 on exynos5420
  ARM: dts: Fix bootup thermal issue on smdk5250
  ARM: shmobile: r8a7791 dtsi: Add CPG/MSTP Clock Domain for sound
  ARM: shmobile: r8a7790 dtsi: Add CPG/MSTP Clock Domain for sound
  arm-cci500: Don't enable PMU driver by default
  ARM: dts: fix usb pin control for imx-rex dts
  ARM: imx53: qsrb: fix PMIC interrupt level
  ARM: imx53: include IRQ dt-bindings header
  ARM: dts: add suspend opp to exynos4412
  ARM: dts: Fix LEDs on exynos5422-odroidxu3
  ARM: EXYNOS: reset Little cores when cpu is up
  ARM: dts: Fix Makefile target for sun4i-a10-itead-iteaduino-plus
  ARM: dts: sunxi: Raise minimum CPU voltage for sun7i-a20 to meet SoC specifications
2015-10-09 15:54:14 -07:00
Mike Snitzer b0d3cc011e dm snapshot: add new persistent store option to support overflow
Commit 76c44f6d80 introduced the possibly for "Overflow" to be reported
by the snapshot device's status.  Older userspace (e.g. lvm2) does not
handle the "Overflow" status response.

Fix this incompatibility by requiring newer userspace code, that can
cope with "Overflow", request the persistent store with overflow support
by using "PO" (Persistent with Overflow) for the snapshot store type.

Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Fixes: 76c44f6d80 ("dm snapshot: don't invalidate on-disk image on snapshot write overflow")
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2015-10-09 16:57:03 -04:00
Rafael J. Wysocki 670aee3fc7 Merge branches 'pm-devfreq' and 'pm-cpufreq'
* pm-devfreq:
  PM / devfreq: fix double kfree
  PM / devfreq: Fix governor_store()

* pm-cpufreq:
  cpufreq: prevent lockup on reading scaling_available_frequencies
  cpufreq: acpi_cpufreq: prevent crash on reading freqdomain_cpus
2015-10-09 22:13:30 +02:00
Marc Zyngier 10abc7df92 irqdomain: Add an accessor for the of_node field
As we're about to remove the of_node field from the irqdomain
structure, introduce an accessor for it. Subsequent patches
will take care of the actual repainting.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1444402211-1141-1-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-09 17:17:30 +02:00
Arnd Bergmann e3096c9c7c genirq: Fix handle_bad_irq kerneldoc comment
A recent cleanup removed the 'irq' parameter from many functions, but
left the documentation for this in place for at least one function.

This removes it.

Fixes: bd0b9ac405 ("genirq: Remove irq argument from irq flow handlers")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: kbuild-all@01.org
Cc: Austin Schuh <austin@peloton-tech.com>
Cc: Santosh Shilimkar <ssantosh@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/5400000.cD19rmgWjV@wuerfel
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-09 17:17:30 +02:00
Arnd Bergmann 9d67dc5da5 genirq: Export handle_bad_irq
A cleanup of the omap gpio driver introduced a use of the
handle_bad_irq() function in a device driver that can be
a loadable module.

This broke the ARM allmodconfig build:

ERROR: "handle_bad_irq" [drivers/gpio/gpio-omap.ko] undefined!

This patch exports the handle_bad_irq symbol in order to
allow the use in modules.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Santosh Shilimkar <ssantosh@kernel.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Austin Schuh <austin@peloton-tech.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/5847725.4IBopItaOr@wuerfel
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-09 17:17:30 +02:00
Joe Thornber 2bffa1503c dm cache: fix NULL pointer when switching from cleaner policy
The cleaner policy doesn't make use of the per cache block hint space in
the metadata (unlike the other policies).  When switching from the
cleaner policy to mq or smq a NULL pointer crash (in dm_tm_new_block)
was observed.  The crash was caused by bugs in dm-cache-metadata.c
when trying to skip creation of the hint btree.

The minimal fix is to change hint size for the cleaner policy to 4 bytes
(only hint size supported).

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
2015-10-09 09:16:29 -04:00
Mikulas Patocka a452744bcb crash in md-raid1 and md-raid10 due to incorrect list manipulation
The commit 55ce74d4bf (md/raid1: ensure
device failure recorded before write request returns) is causing crash in
the LVM2 testsuite test shell/lvchange-raid.sh. For me the crash is 100%
reproducible.

The reason for the crash is that the newly added code in raid1d moves the
list from conf->bio_end_io_list to tmp, then tests if tmp is non-empty and
then incorrectly pops the bio from conf->bio_end_io_list (which is empty
because the list was alrady moved).

Raid-10 has a similar bug.

Kernel Fault: Code=15 regs=000000006ccb8640 (Addr=0000000100000000)
CPU: 3 PID: 1930 Comm: mdX_raid1 Not tainted 4.2.0-rc5-bisect+ 
task: 000000006cc1f258 ti: 000000006ccb8000 task.ti: 000000006ccb8000

     YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00001000000001001111111000001111 Not tainted
r00-03  000000ff0804fe0f 000000001059d000 000000001059f818 000000007f16be38
r04-07  000000001059d000 000000007f16be08 0000000000200200 0000000000000001
r08-11  000000006ccb8260 000000007b7934d0 0000000000000001 0000000000000000
r12-15  000000004056f320 0000000000000000 0000000000013dd0 0000000000000000
r16-19  00000000f0d00ae0 0000000000000000 0000000000000000 0000000000000001
r20-23  000000000800000f 0000000042200390 0000000000000000 0000000000000000
r24-27  0000000000000001 000000000800000f 000000007f16be08 000000001059d000
r28-31  0000000100000000 000000006ccb8560 000000006ccb8640 0000000000000000
sr00-03  0000000000249800 0000000000000000 0000000000000000 0000000000249800
sr04-07  0000000000000000 0000000000000000 0000000000000000 0000000000000000

IASQ: 0000000000000000 0000000000000000 IAOQ: 000000001059f61c 000000001059f620
 IIR: 0f8010c6    ISR: 0000000000000000  IOR: 0000000100000000
 CPU:        3   CR30: 000000006ccb8000 CR31: 0000000000000000
 ORIG_R28: 000000001059d000
 IAOQ[0]: call_bio_endio+0x34/0x1a8 [raid1]
 IAOQ[1]: call_bio_endio+0x38/0x1a8 [raid1]
 RP(r2): raid_end_bio_io+0x88/0x168 [raid1]
Backtrace:
 [<000000001059f818>] raid_end_bio_io+0x88/0x168 [raid1]
 [<00000000105a4f64>] raid1d+0x144/0x1640 [raid1]
 [<000000004017fd5c>] kthread+0x144/0x160

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: 55ce74d4bf ("md/raid1: ensure device failure recorded before write request returns.")
Fixes: 95af587e95 ("md/raid10: ensure device failure recorded before write request returns.")
Signed-off-by: NeilBrown <neilb@suse.com>
2015-10-09 08:33:46 +11:00
Srinivas Pandruvada 55582bccdc cpufreq: prevent lockup on reading scaling_available_frequencies
When scaling_available_frequencies is read on an offlined cpu, then
either lockup or junk values are displayed. This is caused by
freed freq_table, which policy is using.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-08 21:47:56 +02:00
Srinivas Pandruvada e25303676e cpufreq: acpi_cpufreq: prevent crash on reading freqdomain_cpus
When freqdomain_cpus attribute is read from an offlined cpu, it will
cause crash. This change prevents calling cpufreq_show_cpus when
policy driver_data is NULL.

Crash info:

[  170.814949] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
[  170.814990] IP: [<ffffffff813b2490>] _find_next_bit.part.0+0x10/0x70
[  170.815021] PGD 227d30067 PUD 229e56067 PMD 0
[  170.815043] Oops: 0000 [] SMP
[  170.816022] CPU: 3 PID: 3121 Comm: cat Tainted: G      D    OE   4.3.0-rc3+ 
...
...
[  170.816657] Call Trace:
[  170.816672]  [<ffffffff813b2505>] ? find_next_bit+0x15/0x20
[  170.816696]  [<ffffffff8160e47c>] cpufreq_show_cpus+0x5c/0xd0
[  170.816722]  [<ffffffffa031a409>] show_freqdomain_cpus+0x19/0x20 [acpi_cpufreq]
[  170.816749]  [<ffffffff8160e65b>] show+0x3b/0x60
[  170.816769]  [<ffffffff8129b31c>] sysfs_kf_seq_show+0xbc/0x130
[  170.816793]  [<ffffffff81299be3>] kernfs_seq_show+0x23/0x30
[  170.816816]  [<ffffffff81240f2c>] seq_read+0xec/0x390
[  170.816837]  [<ffffffff8129a64a>] kernfs_fop_read+0x10a/0x160
[  170.816861]  [<ffffffff8121d9b7>] __vfs_read+0x37/0x100
[  170.816883]  [<ffffffff813217c0>] ? security_file_permission+0xa0/0xc0
[  170.816909]  [<ffffffff8121e2e3>] vfs_read+0x83/0x130
[  170.816930]  [<ffffffff8121f035>] SyS_read+0x55/0xc0
...
...
[  170.817185] ---[ end trace bc6eadf82b2b965a ]---

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 4.2+ <stable@vger.kernel.org> # 4.2+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-08 21:47:13 +02:00