d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
freebsd-skq/sys/vm
History
kib b5cd5f8b75 Check for wrap-around in vm_phys_alloc_seg_contig(). 
It is possible to provide insane values for size in contigmalloc(9)
request, which usually not reaches the phys allocator due to failing
KVA allocation.  But with the forthcoming 4/4 i386, where 32bit
architecture has almost 4G KVA, contigmalloc(1G) is not unreasonable
outright and KVA might be available sometimes.

Then, the calculation of pa_end could wrap around, depending on the
physical address, and the checks in vm_phys_alloc_seg_contig() would
pass while the iteration in the loop after the 'done' label goes out
of the vm_page_array bounds.

Fix it by detecting the wrap.

Reported and tested by:	pho
Reviewed by:	alc, markj
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D14767
2018-03-20 16:17:55 +00:00
..
_vm_radix.h
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
default_pager.c
SPDX: wrong license.
2017-11-30 15:45:42 +00:00
device_pager.c
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
memguard.c
Eliminate kmem_arena and kmem_object in preparation for further NUMA commits.
2017-11-28 23:40:54 +00:00
memguard.h
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
phys_pager.c
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
pmap.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
redzone.c
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
redzone.h
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
sg_pager.c
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
swap_pager.c
Use the conventional name for an array of pages.
2018-02-16 15:38:22 +00:00
swap_pager.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
uma_core.c
Fix boot_pages exhaustion on machines with many domains and cores, where
2018-02-09 04:45:39 +00:00
uma_dbg.c
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
uma_dbg.h
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
uma_int.h
Fix three miscalculations in amount of boot pages:
2018-02-07 18:32:51 +00:00
uma.h
Followup on r302393 by cperciva, improving calculation of boot pages required
2018-02-06 04:16:00 +00:00
vm_domainset.c
Move VM_NUMA_ALLOC and DEVICE_NUMA under the single global config option NUMA.
2018-01-14 03:36:03 +00:00
vm_domainset.h
Add files for r327895
2018-01-12 22:57:57 +00:00
vm_extern.h
Use per-domain locks for vm page queue free. Move paging control from
2018-02-06 22:10:07 +00:00
vm_fault.c
Avoid dequeuing the fault page during a soft fault.
2018-03-18 16:49:30 +00:00
vm_glue.c
Make v_wire_count a per-cpu counter(9) counter. This eliminates a
2018-02-12 22:53:00 +00:00
vm_init.c
Fix boot_pages exhaustion on machines with many domains and cores, where
2018-02-09 04:45:39 +00:00
vm_kern.c
Use per-domain locks for vm page queue free. Move paging control from
2018-02-06 22:10:07 +00:00
vm_kern.h
SPDX: Consider code from Carnegie-Mellon University.
2017-11-30 15:48:35 +00:00
vm_map.c
Use per-domain locks for vm page queue free. Move paging control from
2018-02-06 22:10:07 +00:00
vm_map.h
Assign map->header values to avoid boundary checks.
2018-01-20 12:19:02 +00:00
vm_meter.c
Add a generic Proportional Integral Derivative (PID) controller algorithm and
2018-02-23 22:51:51 +00:00
vm_mmap.c
Make v_wire_count a per-cpu counter(9) counter. This eliminates a
2018-02-12 22:53:00 +00:00
vm_object.c
Dequeue wired pages lazily.
2018-02-07 16:57:10 +00:00
vm_object.h
Use per-domain locks for vm page queue free. Move paging control from
2018-02-06 22:10:07 +00:00
vm_page.c
Have vm_page_{deactivate,launder}() requeue already-queued pages.
2018-03-18 16:40:56 +00:00
vm_page.h
Unify bulk free operations in several pmaps.
2018-03-04 20:53:20 +00:00
vm_pageout.c
Eliminate pageout wakeup races. Take another step towards lockless
2018-03-15 19:23:07 +00:00
vm_pageout.h
Fix GCC build: Remove redundant pagedaemon_wakeup declaration
2018-03-16 07:05:09 +00:00
vm_pagequeue.h
Eliminate pageout wakeup races. Take another step towards lockless
2018-03-15 19:23:07 +00:00
vm_pager.c
SPDX: Consider code from Carnegie-Mellon University.
2017-11-30 15:48:35 +00:00
vm_pager.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
vm_param.h
SPDX: Consider code from Carnegie-Mellon University.
2017-11-30 15:48:35 +00:00
vm_phys.c
Check for wrap-around in vm_phys_alloc_seg_contig().
2018-03-20 16:17:55 +00:00
vm_phys.h
Use per-domain locks for vm page queue free. Move paging control from
2018-02-06 22:10:07 +00:00
vm_radix.c
Fix boot_pages calculation for machines that don't have UMA_MD_SMALL_ALLOC.
2018-02-06 22:06:59 +00:00
vm_radix.h
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
vm_reserv.c
Eliminate pageout wakeup races. Take another step towards lockless
2018-03-15 19:23:07 +00:00
vm_reserv.h
Use per-domain locks for vm page queue free. Move paging control from
2018-02-06 22:10:07 +00:00
vm_swapout_dummy.c
SPDX: Consider code from Carnegie-Mellon University.
2017-11-30 15:48:35 +00:00
vm_swapout.c
Dequeue wired pages lazily.
2018-02-07 16:57:10 +00:00
vm_unix.c
ANSIfy function definitions in sys/vm/
2018-01-12 03:50:44 +00:00
vm.h
SPDX: Consider code from Carnegie-Mellon University.
2017-11-30 15:48:35 +00:00
vnode_pager.c
Use per-domain locks for vm page queue free. Move paging control from
2018-02-06 22:10:07 +00:00
vnode_pager.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00