Commit 1bf4ddc46c ("irqdomain: Introduce irq_domain_create_{linear,
tree}") introduced the use of fwnode_handle to identify the interrupt
controller when calling __irq_domain_add but missed updating the kernel
doc parameters for the function.
Update this comment. While we are touching this code, also consolidate
the declaration and assignment of of_node.
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Acked-by: Marc Zygnier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/1464699409-23113-1-git-send-email-punit.agrawal@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Most (if not all) code here implicitly assumes that the maximum number of
IRQs per chip will be 32, and thus uses 'u32' or 'unsigned long' for many
tasks (for example "struct irq_data" declares its 'mask' field as 'u32',
and "struct irq_chip_generic" declares its 'installed' field as 'unsigned
long')
However, there is no check to verify that irqs_per_chip is <= 32. Hence,
calling irq_alloc_domain_generic_chips() with a bigger value will result in
unexpected results.
Provide a wrapper with a MAYBE_BUILD_BUG_ON(nrirqs >= 32) to catch such
cases.
[ tglx: Reduced changelog to the essential information ]
Signed-off-by: Sebastian Frias <sf84@laposte.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mason <slash.tmp@free.fr>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/57B31D94.5040701@laposte.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
According to the xlate() callback definition, the 'out_type' parameter
needs to be the "linux irq type".
A mask for such bits exists, IRQ_TYPE_SENSE_MASK, which is correctly
applied in irq_domain_xlate_twocell()
So use it for irq_domain_xlate_onetwocell() as well.
Signed-off-by: Sebastian Frias <sf84@laposte.net>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mason <slash.tmp@free.fr>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/57A05F5D.103@laposte.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Without this patch irq_domain_disassociate() cannot properly release the
interrupt. In fact, irq_map_generic_chip() checks a bit on 'gc->installed'
but said bit is never cleared, only set.
Commit 088f40b7b0 ("genirq: Generic chip: Add linear irq domain support")
added irq_map_generic_chip() function and also stated "This lacks a removal
function for now".
This commit provides an implementation of an unmap function that can be
called by irq_domain_disassociate().
[ tglx: Made the function static and removed the export as we have neither
a prototype nor a modular user. ]
Fixes: 088f40b7b0 ("genirq: Generic chip: Add linear irq domain support")
Signed-off-by: Sebastian Frias <sf84@laposte.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mason <slash.tmp@free.fr>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/579F5C5A.2070507@laposte.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
irq_map_generic_chip() contains about the same code as
irq_get_domain_generic_chip() except for the return values.
Split out the irq_get_domain_generic_chip() implementation so it can be
reused.
[ tglx: Removed the extra churn in irq_get_domain_generic_chip() callers
and massaged changelog ]
Signed-off-by: Sebastian Frias <sf84@laposte.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mason <slash.tmp@free.fr>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/579F5C69.8070006@laposte.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The percpu_devid handler is not robust against spurious interrupts. If a
spurious interrupt happens and no action is installed then the handler
crashes with a NULL pointer dereference.
Add a sanity check for this and log the wreckage once in dmesg.
Reported-by: Majun <majun258@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: guohanjun@huawei.com
Cc: dingtianhong@huawei.com
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1609021436160.5647@nanos
The new affinity hint argument of __irq_domain_alloc_irqs() is missing in
irq_reserve_ipi(). Add it.
This fixes the following compilation error:
kernel/irq/ipi.c: In function ‘irq_reserve_ipi’:
kernel/irq/ipi.c:85:9: error: too few arguments to function ‘__irq_domain_alloc_irqs’
virq = __irq_domain_alloc_irqs(domain, virq, nr_irqs, NUMA_NO_NODE,
^
Fixes: 06ee6d571f ("genirq: Add affinity hint to irq allocation")
Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net>
Cc: linux-pci@vger.kernel.org
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
If an irq_domain is auto-recursive and irq_domain_alloc_irqs_recursive()
for its parent has returned an error, then do return and avoid calling
irq_domain_free_irqs_recursive() uselessly, because:
- if domain->ops->alloc() had failed for an auto-recursive irq_domain,
then irq_domain_free_irqs_recursive() had already been called;
- if domain->ops->alloc() had failed for a not auto-recursive irq_domain,
then there is nothing to free at all.
Signed-off-by: Alexander Popov <alex.popov@linux.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/1467505448-2850-1-git-send-email-alex.popov@linux.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This command:
echo 5 > /proc/irq/10/smp_affinity
means only the first and third (not fourth) CPUs can handle irqs
That is, CPU0 is the first CPU and CPU2 is the third cpu
Signed-off-by: John Kacur <jkacur@redhat.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/1466168715-8410-1-git-send-email-jkacur@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
virq is not required to be the same for all msi descs. Use the base irq number
from the desc in the debug printk.
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Use the affinity hint in the irqdesc allocator. The hint is used to determine
the node for the allocation and to set the affinity of the interrupt.
If multiple interrupts are allocated (multi-MSI) then the allocator iterates
over the cpumask and for each set cpu it allocates on their node and sets the
initial affinity to that cpu.
If a single interrupt is allocated (MSI-X) then the allocator uses the first
cpu in the mask to compute the allocation node and uses the mask for the
initial affinity setting.
Interrupts set up this way are marked with the AFFINITY_MANAGED flag to
prevent userspace from messing with their affinity settings.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: linux-block@vger.kernel.org
Cc: linux-pci@vger.kernel.org
Cc: linux-nvme@lists.infradead.org
Cc: axboe@fb.com
Cc: agordeev@redhat.com
Link: http://lkml.kernel.org/r/1467621574-8277-5-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Pull fuse fix from Miklos Szeredi:
"This makes sure userspace filesystems are not broken by the parallel
lookups and readdir feature"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: serialize dirops by default
Pull overlayfs fixes from Miklos Szeredi:
"This contains fixes for a dentry leak, a regression in 4.6 noticed by
Docker users and missing write access checking in truncate"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: warn instead of error if d_type is not supported
ovl: get_write_access() in truncate
ovl: fix dentry leak for default_permissions
overlay needs underlying fs to support d_type. Recently I put in a
patch in to detect this condition and started failing mount if
underlying fs did not support d_type.
But this breaks existing configurations over kernel upgrade. Those who
are running docker (partially broken configuration) with xfs not
supporting d_type, are surprised that after kernel upgrade docker does
not run anymore.
https://github.com/docker/docker/issues/22937#issuecomment-229881315
So instead of erroring out, detect broken configuration and warn
about it. This should allow existing docker setups to continue
working after kernel upgrade.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 45aebeaf4f ("ovl: Ensure upper filesystem supports d_type")
Cc: <stable@vger.kernel.org> 4.6
Pull MIPS fix from Ralf Baechle:
"Only a single fix for 4.7 pending at this point. It fixes an issue
that may lead to corruption of the cache mode bits in the page table"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Fix possible corruption of cache mode by mprotect.
- tm: Always reclaim in start_thread() for exec() class syscalls from Cyril Bur
- tm: Avoid SLB faults in treclaim/trecheckpoint when RI=0 from Michael Neuling
- eeh: Fix wrong argument passed to eeh_rmv_device() from Gavin Shan
- Initialise pci_io_base as early as possible from Darren Stevens
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQIcBAABAgAGBQJXeEmsAAoJEFHr6jzI4aWAwMMQAKs/u9rwB3gpOkNJSHajN1Dd
kdqDufzLxLDwbWnMfqM1+bcO2EOjPhKbtpbzhG6oeiET8undRRoLsjHS5rZeYK5h
cviRPEJ/Yz8ZWaIgFGI8+02gXwU0MJhuTY8NPexXmsh4FRdKYwEuCIJShl30lg22
P7UrJ2SCNM+H/uZyS07B7thiwBeAKSp6VkLTpuW/QDz2j1ra/F22dTh7c0Agdahd
INAMAnh9nYeuMVYn4XjOOlQ07JnBTuf1/W5Wxlw4i/86rVq+Hy8zh5r1X52oysR5
lZl63B9q3agKG9cc9lSN2ibTDVerlFMwB2QysX2a6Uy7+y2SB3hS7VS1RTXCh3hg
/omApGGVW3Hh+E2CuKfFLQySU55NRpLAoTGravGr/KsH4wZP/n/fkrctldCrqm7P
sTPT52+t+iJQk4fiskRY3yQ7DTTnt3rTC8MJRGqvLuCheolLll4NQaWOF75AJP+7
WFWtC4QHOTPERMkhqLnZDG2vNuDg1H8chuZ2+PxtIs6G1vuOEun+MTZAYh4u6XWE
bAIT9rV3xBdE17bzYOQz7lU1y7yNVtP7xkm0HIOAHlU4gUrjQp5u8F3TnPW3/M0m
8GeaZdrPjhsaNg31YZODAeM8Ddf+N9d2a2VPIr/fzytURhMe0ss3Z/MdMoYRATab
Lh1o+G3gDo9MVaphoJ3w
=oEAY
-----END PGP SIGNATURE-----
Merge tag 'powerpc-4.7-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- tm: Always reclaim in start_thread() for exec() class syscalls from
Cyril Bur
- tm: Avoid SLB faults in treclaim/trecheckpoint when RI=0 from Michael
Neuling
- eeh: Fix wrong argument passed to eeh_rmv_device() from Gavin Shan
- Initialise pci_io_base as early as possible from Darren Stevens
* tag 'powerpc-4.7-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Initialise pci_io_base as early as possible
powerpc/tm: Avoid SLB faults in treclaim/trecheckpoint when RI=0
powerpc/eeh: Fix wrong argument passed to eeh_rmv_device()
powerpc/tm: Always reclaim in start_thread() for exec() class syscalls
Pull drm fixes frlm Dave Airlie:
"Just some AMD and Intel fixes, the AMD ones are further production
Polaris fixes, and the Intel ones fix some early timeouts, some PCI ID
changes and a couple of other fixes.
Still a bit Internet challenged here, hopefully end of next week will
solve it"
* tag 'drm-fixes-for-v4.7-rc6' of git://people.freedesktop.org/~airlied/linux:
drm/i915: Fix missing unlock on error in i915_ppgtt_info()
drm/amd/powerplay: workaround for UVD clock issue
drm/amdgpu: add ACLK_CNTL setting for polaris10
drm/amd/powerplay: fix issue uvd dpm can't enabled on Polaris11.
drm/amd/powerplay: Workaround for Memory EDC Error on Polaris10.
drm/i915: Removing PCI IDs that are no longer listed as Kabylake.
drm/i915: Add more Kabylake PCI IDs.
drm/i915: Avoid early timeout during AUX transfers
drm/i915/hsw: Avoid early timeout during LCPLL disable/restore
drm/i915/lpt: Avoid early timeout during FDI PHY reset
drm/i915/bxt: Avoid early timeout during PLL enable
drm/i915: Refresh cached DP port register value on resume
drm/amd/powerplay: Update CKS on/ CKS off voltage offset calculation
drm/amd/powerplay: disable FFC.
drm/amd/powerplay: add some definition for FFC feature on polaris.
A few small driver-specific fixes for SPI, all in the normal important
if you hit them category especially the rockchip driver fix which
addresses a race which has been exposed more frequently with some recent
performance improvements.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJXd4PmAAoJECTWi3JdVIfQ0A4H/1D1m/bsdAY0FS12YQteV1GQ
JYUvj/CWNiuV1MSqIU0WWrlMFO9EwtsojytLIfmGNPXUvPMSpW/Q3IJqhRrQWhmN
Zl1FUUUIz+sGBsqwq6nZbDJxJhpT6/Tb7YDFR6Oi4l7VeB4Sisv5ax6Ay+uwa/mp
cvrb/ULILLCHAv0v+6rSjIkZlvD1Yc+08SbbUrTPtVdcY0TDbJEkZ+U2IviCsxmP
PuqdPUgFIEy7j+hnbEib24f5BNZ/m1a0DY012+es7fSkD5DVa2h71kxS54RC6QYn
BkkMdK7moflBpbipKlI/eBPz73eePO9SxBwUZFLSUzG4DJEJE2mKKRVyU2LHpGA=
=uU1M
-----END PGP SIGNATURE-----
Merge tag 'spi-fix-v4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few small driver-specific fixes for SPI, all in the normal important
if you hit them category especially the rockchip driver fix which
addresses a race which has been exposed more frequently with some
recent performance improvements"
* tag 'spi-fix-v4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: sunxi: fix transfer timeout
spi: sun4i: fix FIFO limit
spi: rockchip: Signal unfinished DMA transfers
spi: spi-ti-qspi: Suspend the queue before removing the device
Two small fixes for the regulator subsystem - one fixing a crash with
one of the devices supported by the max77620 driver, another fixing
startup for the anatop regulator when it starts up with the regulator in
bypass mode.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJXd4GeAAoJECTWi3JdVIfQ+g8H/jpOOKEri6SVaatEbk2J33oA
YD6EpSV4BRVGQRRLSY11tz3Md45xPLhe47kRpT1antgplKVEAJYARGYGVLmCovGz
nFXqbQzeTvxs6o6UdrkJlFLDmn4yZgrL4MqhjfxLUzX+Yz/3neQZq6KhESCWKphT
WPBrNa90s0j+nBCGJV0LxcuoZiKt6th/GUjr0gngepckrg3gIxJJyRVvtE9iVyip
JYdVTfHt/aYJihIdKAPnXa4M9Ky5KY8ZNTySYcyUaXT3VLDK/UNFFO25q4Nw6F5a
6XgcjwcFYDpZitf7pQYYfoobDbgTJ1XllPujEP82rIafruAvAKtfORHnvVJfRlU=
=ZA94
-----END PGP SIGNATURE-----
Merge tag 'regulator-fix-v4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"Two small fixes for the regulator subsystem - one fixing a crash with
one of the devices supported by the max77620 driver, another fixing
startup for the anatop regulator when it starts up with the regulator
in bypass mode"
* tag 'regulator-fix-v4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: max77620: check for valid regulator info
regulator: anatop: allow regulator to be in bypass mode
rockchip clk driver fixes for newly added rk3399 support.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=fAAu
-----END PGP SIGNATURE-----
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 small fix for the newly added oxnas clk driver and a handful of
rockchip clk driver fixes for newly added rk3399 support"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: Fix return value check in oxnas_stdclk_probe()
clk: rockchip: release io resource when failing to init clk on rk3399
clk: rockchip: fix cpuclk registration error handling
clk: rockchip: Revert "clk: rockchip: reset init state before mmc card initialization"
clk: rockchip: fix incorrect parent for rk3399's {c,g}pll_aclk_perihp_src
clk: rockchip: mark rk3399 GIC clocks as critical
clk: rockchip: initialize flags of clk_init_data in mmc-phase clock
here's a batch of i915 fixes for 4.7.
* tag 'drm-intel-fixes-2016-06-30' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Fix missing unlock on error in i915_ppgtt_info()
drm/i915: Removing PCI IDs that are no longer listed as Kabylake.
drm/i915: Add more Kabylake PCI IDs.
drm/i915: Avoid early timeout during AUX transfers
drm/i915/hsw: Avoid early timeout during LCPLL disable/restore
drm/i915/lpt: Avoid early timeout during FDI PHY reset
drm/i915/bxt: Avoid early timeout during PLL enable
drm/i915: Refresh cached DP port register value on resume
Just a few more late fixes for Polaris cards.
* 'drm-fixes-4.7' of git://people.freedesktop.org/~agd5f/linux:
drm/amd/powerplay: workaround for UVD clock issue
drm/amdgpu: add ACLK_CNTL setting for polaris10
drm/amd/powerplay: fix issue uvd dpm can't enabled on Polaris11.
drm/amd/powerplay: Workaround for Memory EDC Error on Polaris10.
drm/amd/powerplay: Update CKS on/ CKS off voltage offset calculation
drm/amd/powerplay: disable FFC.
drm/amd/powerplay: add some definition for FFC feature on polaris.
The following testcase may result in a page table entries with a invalid
CCA field being generated:
static void *bindstack;
static int sysrqfd;
static void protect_low(int protect)
{
mprotect(bindstack, BINDSTACK_SIZE, protect);
}
static void sigbus_handler(int signal, siginfo_t * info, void *context)
{
void *addr = info->si_addr;
write(sysrqfd, "x", 1);
printf("sigbus, fault address %p (should not happen, but might)\n",
addr);
abort();
}
static void run_bind_test(void)
{
unsigned int *p = bindstack;
p[0] = 0xf001f001;
write(sysrqfd, "x", 1);
/* Set trap on access to p[0] */
protect_low(PROT_NONE);
write(sysrqfd, "x", 1);
/* Clear trap on access to p[0] */
protect_low(PROT_READ | PROT_WRITE | PROT_EXEC);
write(sysrqfd, "x", 1);
/* Check the contents of p[0] */
if (p[0] != 0xf001f001) {
write(sysrqfd, "x", 1);
/* Reached, but shouldn't be */
printf("badness, shouldn't happen but does\n");
abort();
}
}
int main(void)
{
struct sigaction sa;
sysrqfd = open("/proc/sysrq-trigger", O_WRONLY);
if (sigprocmask(SIG_BLOCK, NULL, &sa.sa_mask)) {
perror("sigprocmask");
return 0;
}
sa.sa_sigaction = sigbus_handler;
sa.sa_flags = SA_SIGINFO | SA_NODEFER | SA_RESTART;
if (sigaction(SIGBUS, &sa, NULL)) {
perror("sigaction");
return 0;
}
bindstack = mmap(NULL,
BINDSTACK_SIZE,
PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (bindstack == MAP_FAILED) {
perror("mmap bindstack");
return 0;
}
printf("bindstack: %p\n", bindstack);
run_bind_test();
printf("done\n");
return 0;
}
There are multiple ingredients for this:
1) PAGE_NONE is defined to _CACHE_CACHABLE_NONCOHERENT, which is CCA 3
on all platforms except SB1 where it's CCA 5.
2) _page_cachable_default must have bits set which are not set
_CACHE_CACHABLE_NONCOHERENT.
3) Either the defective version of pte_modify for XPA or the standard
version must be in used. However pte_modify for the 36 bit address
space support is no affected.
In that case additional bits in the final CCA mode may generate an invalid
value for the CCA field. On the R10000 system where this was tracked
down for example a CCA 7 has been observed, which is Uncached Accelerated.
Fixed by:
1) Using the proper CCA mode for PAGE_NONE just like for all the other
PAGE_* pte/pmd bits.
2) Fix the two affected variants of pte_modify.
Further code inspection also shows the same issue to exist in pmd_modify
which would affect huge page systems.
Issue in pte_modify tracked down by Alastair Bridgewater, PAGE_NONE
and pmd_modify issue found by me.
The history of this goes back beyond Linus' git history. Chris Dearman's
commit 351336929c ("[MIPS] Allow setting of
the cache attribute at run time.") missed the opportunity to fix this
but it was originally introduced in lmo commit
d523832cf12007b3242e50bb77d0c9e63e0b6518 ("Missing from last commit.")
and 32cc38229ac7538f2346918a09e75413e8861f87 ("New configuration option
CONFIG_MIPS_UNCACHED.")
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Alastair Bridgewater <alastair.bridgewater@gmail.com>
Fix an expression in the ACPI PCI IRQ management code added by a
recent commit that overlooked missing parens in it, so the result
of the computation is incorrect in some cases (Sinan Kaya).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=r8BR
-----END PGP SIGNATURE-----
Merge tag 'acpi-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Fix an expression in the ACPI PCI IRQ management code added by a
recent commit that overlooked missing parens in it, so the result of
the computation is incorrect in some cases (Sinan Kaya)"
* tag 'acpi-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI,PCI,IRQ: correct operator precedence
- Fix a recent intel_pstate regression that caused the number of
wakeups to increase significantly on an idle system in some cases
due to excessive synchronize_sched() invocations (Rafael Wysocki).
- Fix unnecessary invocations of WARN_ON() in the cpufreq core
after cpufreq has been suspended introduced during the 4.6 cycla
(Rafael Wysocki).
- Fix an error code path in the cpufreq-dt-platdev driver that
forgets to drop a reference to a DT node (Masahiro Yamada).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=+apA
-----END PGP SIGNATURE-----
Merge tag 'pm-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Three cpufreq fixes, one in the core (stable-candidate) and two in
drivers (intel_pstate and cpufreq-dt).
Specifics:
- Fix a recent intel_pstate regression that caused the number of
wakeups to increase significantly on an idle system in some cases
due to excessive synchronize_sched() invocations (Rafael Wysocki).
- Fix unnecessary invocations of WARN_ON() in the cpufreq core after
cpufreq has been suspended introduced during the 4.6 cycla (Rafael
Wysocki).
- Fix an error code path in the cpufreq-dt-platdev driver that
forgets to drop a reference to a DT node (Masahiro Yamada)"
* tag 'pm-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: Avoid false-positive WARN_ON()s in cpufreq_update_policy()
cpufreq: dt: call of_node_put() before error out
intel_pstate: Do not clear utilization update hooks on policy changes
Pull vfs fixes from Al Viro:
"Tmpfs readdir throughput regression fix (this cycle) + some -stable
fodder all over the place.
One missing bit is Miklos' tonight locks.c fix - NFS folks had already
grabbed that one by the time I woke up ;-)"
[ The locks.c fix came through the nfsd tree just moments ago ]
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
namespace: update event counter when umounting a deleted dentry
9p: use file_dentry()
ceph: fix d_obtain_alias() misuses
lockless next_positive()
libfs.c: new helper - next_positive()
dcache_{readdir,dir_lseek}(): don't bother with nested ->d_lock
leases on overlayfs.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=K0mr
-----END PGP SIGNATURE-----
Merge tag 'nfsd-4.7-3' of git://linux-nfs.org/~bfields/linux
Pull lockd/locks fixes from Bruce Fields:
"One fix for lockd soft lookups in an error path, and one fix for file
leases on overlayfs"
* tag 'nfsd-4.7-3' of git://linux-nfs.org/~bfields/linux:
locks: use file_inode()
lockd: unregister notifier blocks if the service fails to come up completely
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=PpU9
-----END PGP SIGNATURE-----
Merge tag 'mfd-fixes-4.7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull more MFD fixes from Lee Jones:
"Apologies for missing these from the first pull request.
Final patches fixing Reset API change"
* tag 'mfd-fixes-4.7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
usb: dwc3: st: Use explicit reset_control_get_exclusive() API
phy: phy-stih407-usb: Use explicit reset_control_get_exclusive() API
phy: miphy28lp: Inform the reset framework that our reset line may be shared
Pull libnvdimm fixes from Dan Williams:
"1/ Two regression fixes since v4.6: one for the byte order of a sysfs
attribute (bz121161) and another for QEMU 2.6's NVDIMM _DSM (ACPI
Device Specific Method) implementation that gets tripped up by new
auto-probing behavior in the NFIT driver.
2/ A fix tagged for -stable that stops the kernel from
clobbering/ignoring changes to the configuration of a 'pfn'
instance ("struct page" driver). For example changing the
alignment from 2M to 1G may silently revert to 2M if that value is
currently stored on media.
3/ A fix from Eric for an xfstests failure in dax. It is not
currently tagged for -stable since it requires an 8-exabyte file
system to trigger, and there appear to be no user visible side
effects"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nfit: fix format interface code byte order
dax: fix offset overflow in dax_io
acpi, nfit: fix acpi_check_dsm() vs zero functions implemented
libnvdimm, pfn, dax: fix initialization vs autodetect for mode + alignment
Here are a few small staging and iio driver fixes for 4.7-rc6.
Nothing major here, just a number of small fixes, all have been in
linux-next for a while, and the full details are in the shortlog.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iFYEABECABYFAld2lKYPHGdyZWdAa3JvYWguY29tAAoJEDFH1A3bLfsp7EkAn2tK
KAXXdlnEs9jud1JteSphbTwFAJ4zqSIZXrNMS1vsBgujQiLP6r1xXA==
=eYY6
-----END PGP SIGNATURE-----
Merge tag 'staging-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO fixes from Greg KH:
"Here are a few small staging and iio driver fixes for 4.7-rc6.
Nothing major here, just a number of small fixes, all have been in
linux-next for a while, and the full details are in the shortlog"
* tag 'staging-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio:ad7266: Fix probe deferral for vref
iio:ad7266: Fix support for optional regulators
iio:ad7266: Fix broken regulator error handling
iio: accel: kxsd9: fix the usage of spi_w8r8()
staging: iio: accel: fix error check
staging: iio: ad5933: fix order of cycle conditions
staging: iio: fix ad7606_spi regression
iio: inv_mpu6050: Fix use-after-free in ACPI code
Here are two tty fixes for some reported issues. One resolves a crash
in devpts, and the other resolves a problem with the fbcon cursor blink
causing lockups.
Both have been in linux-next with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iFYEABECABYFAld2lcUPHGdyZWdAa3JvYWguY29tAAoJEDFH1A3bLfspo5MAnjdF
aMlMp7JeHrv9KoEa+lP6rOT6AJ4rrc/tQ0zHCksxMqEDLPNwjnVPbg==
=iFXo
-----END PGP SIGNATURE-----
Merge tag 'tty-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty fixes from Greg KH:
"Here are two tty fixes for some reported issues. One resolves a crash
in devpts, and the other resolves a problem with the fbcon cursor
blink causing lockups.
Both have been in linux-next with no reported problems"
* tag 'tty-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
devpts: fix null pointer dereference on failed memory allocation
tty: vt: Fix soft lockup in fbcon cursor blink timer.
Here are a number of small USB and PHY driver fixes for 4.7-rc6.
Nothing major here, all are described in the shortlog below. All have
been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iFYEABECABYFAld2ljcPHGdyZWdAa3JvYWguY29tAAoJEDFH1A3bLfspN+sAn28Z
+GbDzyY5XwZ7Qs5/5uPYoGONAKCObDpgZr1A+/EMvDd57gfHWmFqTw==
=uYl3
-----END PGP SIGNATURE-----
Merge tag 'usb-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB and PHY fixes from Greg KH:
"Here are a number of small USB and PHY driver fixes for 4.7-rc6.
Nothing major here, all are described in the shortlog below. All have
been in linux-next with no reported issues"
* tag 'usb-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: don't free bandwidth_mutex too early
USB: EHCI: declare hostpc register as zero-length array
phy-sun4i-usb: Fix irq free conditions to match request conditions
phy: bcm-ns-usb2: checking the wrong variable
phy-sun4i-usb: fix missing __iomem *
phy: phy-sun4i-usb: Fix optional gpios failing probe
phy: rockchip-dp: fix return value check in rockchip_dp_phy_probe()
phy: rcar-gen3-usb2: fix unexpected repeat interrupts of VBUS change
usb: common: otg-fsm: add license to usb-otg-fsm
Three fixes:
* Fix use of smp_processor_id() in preemptible code in the IOVA
allocation code. This got introduced with the scalability
improvements in this release cycle.
* A VT-d fix for out-of-bounds access of the iommu->domains
array. The bug showed during suspend/resume.
* AMD IOMMU fix to print the correct device id in the ACPI
parsing code.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=ogRx
-----END PGP SIGNATURE-----
Merge tag 'iommu-fixes-v4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
"Three fixes:
- Fix use of smp_processor_id() in preemptible code in the IOVA
allocation code. This got introduced with the scalability
improvements in this release cycle.
- A VT-d fix for out-of-bounds access of the iommu->domains array.
The bug showed during suspend/resume.
- AMD IOMMU fix to print the correct device id in the ACPI parsing
code"
* tag 'iommu-fixes-v4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/amd: Initialize devid variable before using it
iommu/vt-d: Fix overflow of iommu->domains array
iommu/iova: Disable preemption around use of this_cpu_ptr()
(Another one for the f_path debacle.)
ltp fcntl33 testcase caused an Oops in selinux_file_send_sigiotask.
The reason is that generic_add_lease() used filp->f_path.dentry->inode
while all the others use file_inode(). This makes a difference for files
opened on overlayfs since the former will point to the overlay inode the
latter to the underlying inode.
So generic_add_lease() added the lease to the overlay inode and
generic_delete_lease() removed it from the underlying inode. When the file
was released the lease remained on the overlay inode's lock list, resulting
in use after free.
Reported-by: Eryu Guan <eguan@redhat.com>
Fixes: 4bacc9c923 ("overlayfs: Make f_path always point to the overlay and f_inode to the underlay")
Cc: <stable@vger.kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
We're making all reset line users specify whether their lines are
shared with other IP or they operate them exclusively. In this case
the line is exclusively used only by this IP, so use the *_exclusive()
API accordingly.
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
We're making all reset line users specify whether their lines are
shared with other IP or they operate them exclusively. In this case
the line is exclusively used only by this IP, so use the *_exclusive()
API accordingly.
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
On the STiH410 B2120 development board the MiPHY28lp shares its reset
line with the Synopsys DWC3 SuperSpeed (SS) USB 3.0 Dual-Role-Device
(DRD). New functionality in the reset subsystems forces consumers to
be explicit when requesting shared/exclusive reset lines.
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
- m_start() in fs/namespace.c expects that ns->event is incremented each
time a mount added or removed from ns->list.
- umount_tree() removes items from the list but does not increment event
counter, expecting that it's done before the function is called.
- There are some codepaths that call umount_tree() without updating
"event" counter. e.g. from __detach_mounts().
- When this happens m_start may reuse a cached mount structure that no
longer belongs to ns->list (i.e. use after free which usually leads
to infinite loop).
This change fixes the above problem by incrementing global event counter
before invoking umount_tree().
Change-Id: I622c8e84dcb9fb63542372c5dbf0178ee86bb589
Cc: stable@vger.kernel.org
Signed-off-by: Andrey Ulanov <andreyu@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Punit Agrawal