Re: 4.5-rc1: mm/gup.c warning when writing to /proc/self/mem

2016-01-30 Thread Hugh Dickins
On Sat, 30 Jan 2016, Kirill A. Shutemov wrote: > On Sat, Jan 30, 2016 at 12:58:31PM -0500, Dave Jones wrote: > > Hit this overnight. Just started seeing this after I added "create mmap's > > of fd's we open()'d" to trinity. > > The WARN_ON_ONCE() came form Hugh's patch: > cda540ace6a1 ("mm:

Re: 4.5-rc1: mm/gup.c warning when writing to /proc/self/mem

2016-01-30 Thread Kirill A. Shutemov
On Sat, Jan 30, 2016 at 12:58:31PM -0500, Dave Jones wrote: > Hit this overnight. Just started seeing this after I added "create mmap's > of fd's we open()'d" to trinity. The WARN_ON_ONCE() came form Hugh's patch: cda540ace6a1 ("mm: get_user_pages(write,force) refuse to COW in shared areas")

4.5-rc1: mm/gup.c warning when writing to /proc/self/mem

2016-01-30 Thread Dave Jones
Hit this overnight. Just started seeing this after I added "create mmap's of fd's we open()'d" to trinity. Dave WARNING: CPU: 1 PID: 16733 at mm/gup.c:434 __get_user_pages+0x5f9/0x990() CPU: 1 PID: 16733 Comm: trinity-c30 Tainted: GW 4.5.0-rc1-think+ #12 0009

Re: 4.5-rc1: mm/gup.c warning when writing to /proc/self/mem

2016-01-30 Thread Kirill A. Shutemov
On Sat, Jan 30, 2016 at 12:58:31PM -0500, Dave Jones wrote: > Hit this overnight. Just started seeing this after I added "create mmap's > of fd's we open()'d" to trinity. The WARN_ON_ONCE() came form Hugh's patch: cda540ace6a1 ("mm: get_user_pages(write,force) refuse to COW in shared areas")

4.5-rc1: mm/gup.c warning when writing to /proc/self/mem

2016-01-30 Thread Dave Jones
Hit this overnight. Just started seeing this after I added "create mmap's of fd's we open()'d" to trinity. Dave WARNING: CPU: 1 PID: 16733 at mm/gup.c:434 __get_user_pages+0x5f9/0x990() CPU: 1 PID: 16733 Comm: trinity-c30 Tainted: GW 4.5.0-rc1-think+ #12 0009

Re: 4.5-rc1: mm/gup.c warning when writing to /proc/self/mem

2016-01-30 Thread Hugh Dickins
On Sat, 30 Jan 2016, Kirill A. Shutemov wrote: > On Sat, Jan 30, 2016 at 12:58:31PM -0500, Dave Jones wrote: > > Hit this overnight. Just started seeing this after I added "create mmap's > > of fd's we open()'d" to trinity. > > The WARN_ON_ONCE() came form Hugh's patch: > cda540ace6a1 ("mm: