kib e676dae295 On munlock(), unwire correct page. ... It is possible, for complex fork()/collapse situations, to have sibling address spaces to partially share shadow chains. If one sibling performs wiring, it can happen that a transient page, invalid and busy, is installed into a shadow object which is visible to other sibling for the duration of vm_fault_hold(). When the backing object contains the valid page, and the wiring is performed on read-only entry, the transient page is eventually removed. But the sibling which observed the transient page might perform the unwire, executing vm_object_unwire(). There, the first page found in the shadow chain is considered as the page that was wired for the mapping. It is really the page below it which is wired. So we unwire the wrong page, either triggering the asserts of breaking the page' wire counter. As the fix, wait for the busy state to finish if we find such page during unwire, and restart the shadow chain walk after the sleep. Reported and tested by: pho Reviewed by: markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D14184		2018-02-05 12:49:20 +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	Previously, swap_pager_copy() freed swap blocks one at at time, via	2017-12-31 04:01:47 +00:00
swap_pager.h	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
uma_core.c	Move VM_NUMA_ALLOC and DEVICE_NUMA under the single global config option NUMA.	2018-01-14 03:36:03 +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	Implement NUMA support in uma(9) and malloc(9). Allocations from specific	2018-01-12 23:25:05 +00:00
uma.h	Implement NUMA support in uma(9) and malloc(9). Allocations from specific	2018-01-12 23:25:05 +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	Implement NUMA policy for kmem_*(9). This maintains compatibility with	2018-01-12 23:13:55 +00:00
vm_fault.c	Implement 'domainset', a cpuset based NUMA policy mechanism. This allows	2018-01-12 22:48:23 +00:00
vm_glue.c	ANSIfy function definitions in sys/vm/	2018-01-12 03:50:44 +00:00
vm_init.c	Implement NUMA policy for kmem_*(9). This maintains compatibility with	2018-01-12 23:13:55 +00:00
vm_kern.c	Implement NUMA policy for kmem_*(9). This maintains compatibility with	2018-01-12 23:13:55 +00:00
vm_kern.h	SPDX: Consider code from Carnegie-Mellon University.	2017-11-30 15:48:35 +00:00
vm_map.c	Assign map->header values to avoid boundary checks.	2018-01-20 12:19:02 +00:00
vm_map.h	Assign map->header values to avoid boundary checks.	2018-01-20 12:19:02 +00:00
vm_meter.c	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
vm_mmap.c	Assign map->header values to avoid boundary checks.	2018-01-20 12:19:02 +00:00
vm_object.c	On munlock(), unwire correct page.	2018-02-05 12:49:20 +00:00
vm_object.h	Implement 'domainset', a cpuset based NUMA policy mechanism. This allows	2018-01-12 22:48:23 +00:00
vm_page.c	Remove SFBUF_OPTIONAL_DIRECT_MAP and such hacks, replacing them across the	2018-01-19 17:46:31 +00:00
vm_page.h	Implement 'domainset', a cpuset based NUMA policy mechanism. This allows	2018-01-12 22:48:23 +00:00
vm_pageout.c	Move VM_NUMA_ALLOC and DEVICE_NUMA under the single global config option NUMA.	2018-01-14 03:36:03 +00:00
vm_pageout.h	After r327168, the variable "vm_pageout_wanted" can be static.	2017-12-29 17:02:22 +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	Move VM_NUMA_ALLOC and DEVICE_NUMA under the single global config option NUMA.	2018-01-14 03:36:03 +00:00
vm_phys.h	Move VM_NUMA_ALLOC and DEVICE_NUMA under the single global config option NUMA.	2018-01-14 03:36:03 +00:00
vm_radix.c	sys: general adoption of SPDX licensing ID tags.	2017-11-27 15:23:17 +00:00
vm_radix.h	sys: general adoption of SPDX licensing ID tags.	2017-11-27 15:23:17 +00:00
vm_reserv.c	Implement NUMA policy for kmem_*(9). This maintains compatibility with	2018-01-12 23:13:55 +00:00
vm_reserv.h	Move domain iterators into the page layer where domain selection should take	2017-11-28 23:18:35 +00:00
vm_swapout_dummy.c	SPDX: Consider code from Carnegie-Mellon University.	2017-11-30 15:48:35 +00:00
vm_swapout.c	Restructure swapout tests after vm map locking was removed.	2018-01-04 18:14:58 +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	On pageout, in vnode generic pager, for partially dirty page, only	2018-02-02 11:56:30 +00:00
vnode_pager.h	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00