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opnsense-src/sys/vm
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Mark Johnston 5c50e900ad vm_fault: Shoot down shared mappings in vm_fault_copy_entry() 
As in vm_fault_cow(), it's possible, albeit rare, for multiple vm_maps
to share a shadow object.  When copying a page from a backing object
into the shadow, all mappings of the source page must therefore be
removed.  Otherwise, future operations on the object tree may detect
that the source page is fully shadowed and thus can be freed.

Approved by:	so
Security:	FreeBSD-SA-22:11.vm
Reviewed by:	alc, kib
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D35635
2022-08-09 15:44:45 -04:00
..
_vm_phys.h vm_phys: Try to clean up NUMA KPIs 2020-11-19 03:59:21 +00:00
_vm_radix.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
device_pager.c vm_object_kvme_type(): reimplement by embedding kvme_type into pagerops 2021-05-13 20:10:35 +03:00
memguard.c memguard(9): Fix two typos in source code comments 2022-04-02 13:51:27 +02:00
memguard.h LinuxKPI: Implement ksize() function. 2020-08-29 19:26:31 +00:00
phys_pager.c vm_object_kvme_type(): reimplement by embedding kvme_type into pagerops 2021-05-13 20:10:35 +03:00
pmap.h Add pmap_enter(9) PMAP_ENTER_LARGEPAGE flag and implement it on amd64. 2020-09-09 21:50:24 +00:00
redzone.c redzone: Raise a compile error if KASAN is configured 2021-07-23 10:47:13 -04:00
redzone.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
sg_pager.c vm_object_kvme_type(): reimplement by embedding kvme_type into pagerops 2021-05-13 20:10:35 +03:00
swap_pager.c swap_pager: Reduce the scope of the object lock in putpages 2022-07-18 22:35:49 -05:00
swap_pager.h swapoff: add one more variant of the syscall 2021-12-09 02:48:46 +02:00
uma.h uma: Add UMA_ZONE_UNMANAGED 2022-02-15 09:25:34 -05:00
uma_core.c ddb: annotate some commands with DB_CMD_MEMSAFE 2022-07-18 22:06:09 +00:00
uma_dbg.c Fix compilation failures on different arches that have vm_machdep.c not 2019-01-15 19:33:47 +00:00
uma_dbg.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
uma_int.h Improve UMA cache reclamation. 2021-05-02 19:45:23 -04:00
vm.h vm_pager: Remove the default pager 2022-07-17 07:09:48 -04:00
vm_domainset.c Add interruptible variant of vm_wait(9), vm_wait_intr(9). 2020-09-08 23:28:09 +00:00
vm_domainset.h Add interruptible variant of vm_wait(9), vm_wait_intr(9). 2020-09-08 23:28:09 +00:00
vm_dumpset.h minidump: Use the provided dump bitset 2021-11-19 15:05:52 -04:00
vm_extern.h vm/vm_extern.h, vm/vm_page.h: use sys/kassert.h 2022-02-01 05:55:35 +02:00
vm_fault.c vm_fault: Shoot down shared mappings in vm_fault_copy_entry() 2022-08-09 15:44:45 -04:00
vm_glue.c Remove special kstack allocation code for mips. 2022-01-06 04:43:56 +02:00
vm_init.c vm: Initialize the transient buffer mapping arena with M_WAITOK 2022-04-14 15:46:14 -04:00
vm_kern.c vm_kern: Update KMSAN shadow maps when allocating kmem memory 2022-06-20 12:48:13 -04:00
vm_kern.h Remove the VM map zone. 2020-08-17 13:02:01 +00:00
vm_map.c Rework how shared page related data is stored 2022-07-18 16:27:32 +02:00
vm_map.h Rework how shared page related data is stored 2022-07-18 16:27:32 +02:00
vm_meter.c vmmeter(): Fix detection of the named swap objects 2022-02-02 11:39:58 +02:00
vm_mmap.c vm: Remove handling for OBJT_DEFAULT objects 2022-07-17 07:09:48 -04:00
vm_object.c ddb: annotate some commands with DB_CMD_MEMSAFE 2022-07-18 22:06:09 +00:00
vm_object.h vm_object: Modify vm_object_allocate_anon() to return OBJT_SWAP objects 2022-07-17 07:09:48 -04:00
vm_page.c ddb: annotate some commands with DB_CMD_MEMSAFE 2022-07-18 22:06:09 +00:00
vm_page.h vm/vm_extern.h, vm/vm_page.h: use sys/kassert.h 2022-02-01 05:55:35 +02:00
vm_pageout.c vm: Remove handling for OBJT_DEFAULT objects 2022-07-17 07:09:48 -04:00
vm_pageout.h Add interruptible variant of vm_wait(9), vm_wait_intr(9). 2020-09-08 23:28:09 +00:00
vm_pagequeue.h vm_phys: Try to clean up NUMA KPIs 2020-11-19 03:59:21 +00:00
vm_pager.c vm_pager: Remove the default pager 2022-07-17 07:09:48 -04:00
vm_pager.h vm/vm_pager.h: use sys/systm.h header 2022-02-01 05:55:35 +02:00
vm_param.h (fault 3/9) Move map relookup into a dedicated function. 2020-01-23 05:07:01 +00:00
vm_phys.c ddb: annotate some commands with DB_CMD_MEMSAFE 2022-07-18 22:06:09 +00:00
vm_phys.h vm_phys: hide vm_phys_set_pool 2021-12-29 11:17:33 -06:00
vm_radix.c vm: clean up empty lines in .c and .h files 2020-09-01 21:20:45 +00:00
vm_radix.h Use SMR to provide a safe unlocked lookup for vm_radix. 2020-02-19 19:58:31 +00:00
vm_reserv.c vm_reserv: use enhanced bitstring for popmaps 2022-01-12 11:03:53 -06:00
vm_reserv.h vm: alloc pages from reserv before breaking it 2021-12-24 12:59:16 -06:00
vm_swapout.c vm: Use __diagused for variables only used in KASSERT(). 2022-04-13 16:08:20 -07:00
vm_swapout_dummy.c SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_unix.c Prepare to handle non-trivial errors from vm_map_delete(). 2020-09-09 21:34:31 +00:00
vnode_pager.c vm: Use __diagused for variables only used in KASSERT(). 2022-04-13 16:08:20 -07:00
vnode_pager.h vm pager: writemapping accounting for OBJT_SWAP 2019-09-03 20:31:48 +00:00