On 07/29/2016 08:05 PM, Dmitry Vyukov wrote:
On Fri, Jul 29, 2016 at 7:57 PM, Vegard Nossum <vegard.nossum@xxxxxxxxxx> wrote:
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kernel BUG at mm/mempolicy.c:1699!
[...]
In particular, it's interesting that the kernel/exit.c line is
mpol_put(tsk->mempolicy);
and alloc_pages_current() does (potentially):
pol = get_task_policy(current);.
The bug seems very new or very rare or both.
This is https://github.com/google/kasan/issues/35
It is introduced with stackdepot.
Ah, cool.
Would it be enough to set __GFP_THISNODE in depot_save_stack() so it
uses &default_policy instead of current->mempolicy?
Vegard
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