Re: [PATCH v2 1/1] mm/memory-failure: Poison read receives SIGKILL instead of SIGBUS if mmaped more than once

On 7/24/2019 4:43 PM, Naoya Horiguchi wrote: On Wed, Jul 24, 2019 at 04:33:23PM -0600, Jane Chu wrote: Mmap /dev/dax more than once, then read the poison location using address from one of the mappings. The other mappings due to not having the page mapped in will cause SIGKILLs delivered to t

Re: [PATCH v2 1/1] mm/memory-failure: Poison read receives SIGKILL instead of SIGBUS if mmaped more than once

On Wed, Jul 24, 2019 at 04:33:23PM -0600, Jane Chu wrote: > Mmap /dev/dax more than once, then read the poison location using address > from one of the mappings. The other mappings due to not having the page > mapped in will cause SIGKILLs delivered to the process. SIGKILL succeeds > over SIGBUS, s

[PATCH v2 1/1] mm/memory-failure: Poison read receives SIGKILL instead of SIGBUS if mmaped more than once

Mmap /dev/dax more than once, then read the poison location using address from one of the mappings. The other mappings due to not having the page mapped in will cause SIGKILLs delivered to the process. SIGKILL succeeds over SIGBUS, so user process looses the opportunity to handle the UE. Although