android_kernel_samsung_msm8976/arch/arm
Sebastian Andrzej Siewior c03ca5f3a8 ARM: 8840/1: use a raw_spinlock_t in unwind
[ Upstream commit 74ffe79ae538283bbf7c155e62339f1e5c87b55a ]

Mostly unwind is done with irqs enabled however SLUB may call it with
irqs disabled while creating a new SLUB cache.

I had system freeze while loading a module which called
kmem_cache_create() on init. That means SLUB's __slab_alloc() disabled
interrupts and then

->new_slab_objects()
 ->new_slab()
  ->setup_object()
   ->setup_object_debug()
    ->init_tracking()
     ->set_track()
      ->save_stack_trace()
       ->save_stack_trace_tsk()
        ->walk_stackframe()
         ->unwind_frame()
          ->unwind_find_idx()
           =>spin_lock_irqsave(&unwind_lock);

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-07-27 22:10:04 +02:00
..
boot ARM: 8753/1: decompressor: add a missing parameter to the addruart macro 2019-07-27 21:52:22 +02:00
common ARM: sa1111: fix pcmcia suspend/resume 2019-07-27 21:42:11 +02:00
crypto crypto: arm - ignore generated SHA2 assembly files 2019-07-27 21:50:32 +02:00
include Revert "android/lowmemorykiller: Ignore tasks with freed mm" 2019-07-27 22:09:48 +02:00
kernel ARM: 8840/1: use a raw_spinlock_t in unwind 2019-07-27 22:10:04 +02:00
kvm KVM: arm/arm64: Close VMID generation race 2019-07-27 21:52:17 +02:00
lib ARM: 8772/1: kprobes: Prohibit kprobes on get_user functions 2019-07-27 21:52:22 +02:00
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mach-socfpga This is the 3.10.102 stable release 2017-04-18 17:22:08 +02:00
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mm ARM: 7919/1: mm: refactor v7 cache cleaning ops to use way/index sequence 2019-07-27 21:53:24 +02:00
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