Konstantin Belousov 63cdcaaead Properly handle possible underflow in vm_fault_prefault(). ...

In vm_fault_prefault(), if backward count causes underflow in
calculation of
	starta = addra - backward * PAGE_SIZE;
then starta must be clipped to entry->start, instead of zero.
Clipping to zero allowed mapping outside of the map entries address
ranges, in particular, map at zero.

Submitted by:	Yanko Yankulov <yanko.yankulov@gmail.com>
Reviewed by:	alc
MFC after:	1 week

2017-02-24 08:09:16 +00:00

..

_vm_radix.h

During vm_page_cache()'s call to vm_radix_insert(), if vm_page_alloc() was

2016-12-01 17:26:37 +00:00

default_pager.c

Provide introductory description of the default pager.

2016-12-14 23:36:32 +00:00

device_pager.c

Consistently handle negative or wrapping offsets in the mmap(2) syscalls.

2017-02-12 21:05:44 +00:00

memguard.c

Include sys/_task.h into uma_int.h, so that taskqueue.h isn't a

2016-02-09 20:22:35 +00:00

memguard.h

…

phys_pager.c

Implement the populate() pager method for phys pager.

2016-12-08 11:35:53 +00:00

pmap.h

Various changes to pmap_ts_referenced()

2016-09-10 16:49:25 +00:00

redzone.c

…

redzone.h

…

sg_pager.c

Consistently handle negative or wrapping offsets in the mmap(2) syscalls.

2017-02-12 21:05:44 +00:00

swap_pager.c

Add a page queue for holding dirty anonymous unswappable pages.

2017-01-03 00:05:44 +00:00

swap_pager.h

Add a page queue for holding dirty anonymous unswappable pages.

2017-01-03 00:05:44 +00:00

uma_core.c

Print flags in hex instead of decimal.

2017-01-02 16:50:52 +00:00

uma_dbg.c

Fix memguard(9) in kernels with INVARIANTS enabled.

2016-06-01 22:31:35 +00:00

uma_dbg.h

Move uma_dbg_alloc() and uma_dbg_free() into uma_core.c, which allows

2016-02-03 22:02:36 +00:00

uma_int.h

Autotune the number of pages set aside for UMA startup based on the number

2016-07-07 18:37:12 +00:00

uma.h

Replace a number of conflations of mp_ncpus and mp_maxid with either

2016-07-06 14:09:49 +00:00

vm_domain.c

Remove cpu_spinwait after seq_consistent.

2016-12-30 06:26:17 +00:00

vm_domain.h

Add an initial NUMA affinity/policy configuration for threads and processes.

2015-07-11 15:21:37 +00:00

vm_extern.h

Rework r313352.

2017-02-13 09:04:38 +00:00

vm_fault.c

Properly handle possible underflow in vm_fault_prefault().

2017-02-24 08:09:16 +00:00

vm_glue.c

Eliminate unneeded vm_page_xbusy() and vm_page_xunbusy() operations when

2016-08-14 22:00:45 +00:00

vm_init.c

Remove a redundant use of min().

2017-01-05 03:13:45 +00:00

vm_kern.c

Add a small allocator for exec_map entries.

2017-01-05 01:44:12 +00:00

vm_kern.h

Add a small allocator for exec_map entries.

2017-01-05 01:44:12 +00:00

vm_map.c

Style fixes for vm_map_insert().

2017-01-01 18:49:46 +00:00

vm_map.h

Change the type of the map entry's next_read field from a vm_pindex_t to a

2016-07-07 20:58:16 +00:00

vm_meter.c

Remove redundancy in vmtotal().

2016-12-26 19:29:04 +00:00

vm_mmap.c

Rework r313352.

2017-02-13 09:04:38 +00:00

vm_object.c

Avoid page lookups in the top-level object in vm_object_madvise().

2017-01-30 18:51:43 +00:00

vm_object.h

Consistently handle negative or wrapping offsets in the mmap(2) syscalls.

2017-02-12 21:05:44 +00:00

vm_page.c

Over the years, the code and comments in vm_page_startup() have diverged in

2017-02-04 05:23:10 +00:00

vm_page.h

Move bogus_page declaration to vm_page.h and initialization to vm_page.c.

2017-01-04 22:27:19 +00:00

vm_pageout.c

try to fix RACCT_RSS accounting

2017-02-14 13:54:05 +00:00

vm_pageout.h

The flag "vm_pages_needed" has long served two distinct purposes: (1) to

2016-05-27 19:15:45 +00:00

vm_pager.c

Move bogus_page declaration to vm_page.h and initialization to vm_page.c.

2017-01-04 22:27:19 +00:00

vm_pager.h

Add a new populate() pager method and extend device pager ops vector

2016-12-08 11:26:11 +00:00

vm_param.h

Remove the v_cache_min and v_cache_max sysctls. They are unused and have

2015-09-11 03:00:20 +00:00

vm_phys.c

Ifdef out the unused vm_rr_selectdomain().

2017-02-02 17:44:55 +00:00

vm_phys.h

Remove support for idle page zeroing.

2016-09-03 20:38:13 +00:00

vm_radix.c

Previously, vm_radix_remove() would panic if the radix trie didn't

2016-12-08 04:29:29 +00:00

vm_radix.h

Previously, vm_radix_remove() would panic if the radix trie didn't

2016-12-08 04:29:29 +00:00

vm_reserv.c

Relax the object type restrictions on vm_page_alloc_contig(). Specifically,

2016-12-28 18:32:13 +00:00

vm_reserv.h

Relax the object type restrictions on vm_page_alloc_contig(). Specifically,

2016-12-28 18:32:13 +00:00

vm_unix.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

vm.h

Add new bus methods for mapping resources.

2016-05-20 17:57:47 +00:00

vnode_pager.c

Fix the contiguity once more.

2017-01-12 20:26:02 +00:00

vnode_pager.h

A change to KPI of vm_pager_get_pages() and underlying VOP_GETPAGES().

2015-12-16 21:30:45 +00:00