Romain Perier fba7cd681b asm-generic/futex: Re-enable preemption in futex_atomic_cmpxchg_inatomic() ... The recent decoupling of pagefault disable and preempt disable added an explicit preempt_disable/enable() pair to the futex_atomic_cmpxchg_inatomic() implementation in asm-generic/futex.h. But it forgot to add preempt_enable() calls to the error handling code pathes, which results in a preemption count imbalance. This is observable on boot when the test for atomic_cmpxchg() is calling futex_atomic_cmpxchg_inatomic() on a NULL pointer. Add the missing preempt_enable() calls to the error handling code pathes. [ tglx: Massaged changelog ] Fixes: d9b9ff8c18 ("sched/preempt, futex: Disable preemption in UP futex_atomic_cmpxchg_inatomic() explicitly") Signed-off-by: Romain Perier <romain.perier@free-electrons.com> Cc: linux-arch@vger.kernel.org Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1460640963-690-1-git-send-email-romain.perier@free-electrons.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2016-04-21 11:06:09 +02:00
..
bitops	bitops: Do not default to __clear_bit() for __clear_bit_unlock()	2016-03-21 10:50:48 +01:00
4level-fixup.h	mm, asm-generic: define PUD_SHIFT in <asm-generic/4level-fixup.h>	2015-02-11 17:06:03 -08:00
asm-offsets.h	asm-generic: Add common asm-offsets.h	2015-06-23 13:35:49 +09:00
atomic-long.h	include/asm-generic/atomic-long.h: force inlining of some atomic_long operations	2016-03-17 15:09:34 -07:00
atomic.h	atomic, arch: Audit atomic_{read,set}()	2015-09-23 09:54:28 +02:00
atomic64.h	atomic: Provide atomic_{or,xor,and}	2015-07-27 14:06:24 +02:00
audit_change_attr.h
audit_dir_write.h
audit_read.h
audit_signal.h
audit_write.h
barrier.h	asm-generic: implement virt_xxx memory barriers	2016-01-12 20:46:59 +02:00
bitops.h
bitsperlong.h
bug.h	asm-generic changes for 4.6	2016-03-24 23:13:48 -07:00
bugs.h
cache.h
cacheflush.h
checksum.h	ipv4: Update parameters for csum_tcpudp_magic to their original types	2016-03-13 23:55:13 -04:00
clkdev.h
cmpxchg-local.h
cmpxchg.h	asm-generic: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations	2015-10-15 00:21:13 +02:00
cputime.h
cputime_jiffies.h
cputime_nsecs.h	cputime: Prevent 32bit overflow in time[val|spec]_to_cputime()	2016-02-02 15:24:38 +01:00
current.h
delay.h
device.h
div64.h	__div64_32(): make it overridable at compile time	2015-11-16 14:42:12 -05:00
dma-contiguous.h
dma.h
early_ioremap.h	Merge branch 'akpm' (patches from Andrew)	2015-09-08 17:52:23 -07:00
emergency-restart.h
exec.h
fb.h
fixmap.h	asm-generic: Fix local variable shadow in __set_fixmap_offset	2016-02-16 15:10:44 +00:00
ftrace.h
futex.h	asm-generic/futex: Re-enable preemption in futex_atomic_cmpxchg_inatomic()	2016-04-21 11:06:09 +02:00
getorder.h
gpio.h	gpio: allow setting ARCH_NR_GPIOS from Kconfig	2016-02-19 00:22:54 +01:00
hardirq.h
hugetlb.h
hw_irq.h
ide_iops.h
int-ll64.h
io.h	x86/mm, asm-generic: Add IOMMU ioremap_uc() variant default	2015-07-21 10:47:03 +02:00
ioctl.h
iomap.h	x86/mm, asm-generic: Add ioremap_wt() for creating Write-Through mappings	2015-06-07 15:28:56 +02:00
irq.h
irq_regs.h
irq_work.h
irqflags.h
Kbuild.asm
kdebug.h
kmap_types.h
kvm_para.h
libata-portmap.h
linkage.h
local.h
local64.h
mcs_spinlock.h
memory_model.h	mm: add PHYS_PFN, use it in __phys_to_pfn()	2016-01-14 16:00:49 -08:00
mm-arch-hooks.h	mm: clean up per architecture MM hook header files	2015-07-17 16:39:53 -07:00
mm_hooks.h	mm/core, x86/mm/pkeys: Differentiate instruction fetches	2016-02-18 19:46:29 +01:00
mmu.h
mmu_context.h
module.h
msi.h
mutex-dec.h	locking/mutex: Use acquire/release semantics	2015-10-06 17:28:20 +02:00
mutex-null.h
mutex-xchg.h	locking/mutex: Use acquire/release semantics	2015-10-06 17:28:20 +02:00
mutex.h
page.h	asm-generic: page.h: Remove useless get_user_page and free_user_page	2016-02-26 15:24:55 +01:00
param.h
parport.h
pci.h	PCI: Remove unused pcibios_select_root() (again)	2015-06-08 07:56:21 -05:00
pci_iomap.h	PCI: Add pci_iomap_wc() variants	2015-08-25 09:59:45 +02:00
percpu.h
pgalloc.h
pgtable-nopmd.h
pgtable-nopud.h
pgtable.h	mm/thp/migration: switch from flush_tlb_range to flush_pmd_tlb_range	2016-03-17 15:09:34 -07:00
preempt.h	sched/core: Create preempt_count invariant	2015-10-06 17:08:14 +02:00
ptrace.h
qrwlock.h	locking/qrwlock: Make use of _{acquire|release|relaxed}() atomics	2015-08-12 11:59:06 +02:00
qrwlock_types.h	locking/qrwlock: Rename ->lock to ->wait_lock	2015-09-18 09:27:29 +02:00
qspinlock.h	locking/qspinlock: Move __ARCH_SPIN_LOCK_UNLOCKED to qspinlock_types.h	2016-02-29 10:02:43 +01:00
qspinlock_types.h	locking/qspinlock: Move __ARCH_SPIN_LOCK_UNLOCKED to qspinlock_types.h	2016-02-29 10:02:43 +01:00
resource.h
rtc.h	rtc: cmos: century support	2015-09-05 13:19:09 +02:00
rwsem.h	locking/rwsem: Use acquire/release semantics	2015-10-06 17:28:24 +02:00
seccomp.h	seccomp: allow COMPAT sigreturn overrides	2015-04-17 09:04:09 -04:00
sections.h	asm/sections: add helpers to check for section data	2016-01-16 11:17:24 -08:00
segment.h
serial.h
siginfo.h
signal.h
simd.h
sizes.h
spinlock.h
statfs.h
string.h
switch_to.h
syscall.h
syscalls.h
termios-base.h
termios.h
timex.h
tlb.h	treewide: Remove old email address	2015-11-23 09:44:58 +01:00
tlbflush.h
topology.h
trace_clock.h
uaccess-unaligned.h
uaccess.h	asm-generic: {get,put}_user ptr argument evaluate only 1 time	2015-11-08 22:44:42 +09:00
unaligned.h
unistd.h
user.h
vga.h
vmlinux.lds.h	arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections	2016-03-25 16:37:42 -07:00
vtime.h
word-at-a-time.h	Make asm/word-at-a-time.h available on all architectures	2015-07-08 16:41:55 -04:00
xor.h