Re: [PATCH v2] mm/sparse: Fix kernel crash with pfn_section_valid check

2020-03-27 Thread David Hildenbrand
On 26.03.20 14:32, Aneesh Kumar K.V wrote: > Fixes the below crash > > BUG: Kernel NULL pointer dereference on read at 0x > Faulting instruction address: 0xc0c3447c > Oops: Kernel access of bad area, sig: 11 [#1] > LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries > CPU: 11

Re: [PATCH v2] mm/sparse: Fix kernel crash with pfn_section_valid check

2020-03-26 Thread Wei Yang
On Thu, Mar 26, 2020 at 07:02:35PM +0530, Aneesh Kumar K.V wrote: >Fixes the below crash > >BUG: Kernel NULL pointer dereference on read at 0x >Faulting instruction address: 0xc0c3447c >Oops: Kernel access of bad area, sig: 11 [#1] >LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA

Re: [PATCH v2] mm/sparse: Fix kernel crash with pfn_section_valid check

2020-03-26 Thread Pankaj Gupta
> > Fixes the below crash > > BUG: Kernel NULL pointer dereference on read at 0x > Faulting instruction address: 0xc0c3447c > Oops: Kernel access of bad area, sig: 11 [#1] > LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries > CPU: 11 PID: 7519 Comm: lt-ndctl Not tainted

Re: [PATCH v2] mm/sparse: Fix kernel crash with pfn_section_valid check

2020-03-26 Thread Michal Hocko
On Thu 26-03-20 19:02:35, Aneesh Kumar K.V wrote: > Fixes the below crash > > BUG: Kernel NULL pointer dereference on read at 0x > Faulting instruction address: 0xc0c3447c > Oops: Kernel access of bad area, sig: 11 [#1] > LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries >

Re: [PATCH v2] mm/sparse: Fix kernel crash with pfn_section_valid check

2020-03-26 Thread Baoquan He
On 03/26/20 at 07:02pm, Aneesh Kumar K.V wrote: > Fixes the below crash > > BUG: Kernel NULL pointer dereference on read at 0x > Faulting instruction address: 0xc0c3447c > Oops: Kernel access of bad area, sig: 11 [#1] > LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries >

[PATCH v2] mm/sparse: Fix kernel crash with pfn_section_valid check

2020-03-26 Thread Aneesh Kumar K.V
Fixes the below crash BUG: Kernel NULL pointer dereference on read at 0x Faulting instruction address: 0xc0c3447c Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries CPU: 11 PID: 7519 Comm: lt-ndctl Not tainted 5.6.0-rc7-autotest