Re: [PATCH v3 1/3] mm: zero remaining unavailable struct pages

2018-10-10 Thread Andrew Morton
On Tue, 2 Oct 2018 10:38:19 -0400 Masayoshi Mizuma wrote: > From: Naoya Horiguchi > > ... > > Fixes: f7f99100d8d9 ("mm: stop zeroing memory during allocation in vmemmap") > Signed-off-by: Naoya Horiguchi > Tested-by: Oscar Salvador > Tested-by: Masayoshi Mizuma This patch and [2/3] should

Re: [PATCH v3 1/3] mm: zero remaining unavailable struct pages

2018-10-10 Thread Pavel Tatashin
Reviewed-by: Pavel Tatashin On 10/2/18 10:38 AM, Masayoshi Mizuma wrote: > From: Naoya Horiguchi > > There is a kernel panic that is triggered when reading /proc/kpageflags > on the kernel booted with kernel parameter 'memmap=nn[KMG]!ss[KMG]': > > BUG: unable to handle kernel paging request

[PATCH v3 1/3] mm: zero remaining unavailable struct pages

2018-10-02 Thread Masayoshi Mizuma
From: Naoya Horiguchi There is a kernel panic that is triggered when reading /proc/kpageflags on the kernel booted with kernel parameter 'memmap=nn[KMG]!ss[KMG]': BUG: unable to handle kernel paging request at fffe PGD 9b20e067 P4D 9b20e067 PUD 9b210067 PMD 0 Oops: [#1] SM