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freebsd-skq/sys/vm
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Conrad Meyer 6fee422ed5 vm_fault_hold: handle vm_page_rename failure 
On vm_page_rename failure, fix a missing object unlock and a double free of
a page.

First remove the old page, then rename into other page into first_object,
then free the old page.  This avoids the problem on rename failure.  This is
a little ugly but seems to be the most straightforward solution.

Tested with:
  $ sysctl debug.fail_point.uma_zalloc_arg="1%return"
  $ kyua test -k /usr/tests/sys/Kyuafile

Submitted by:	Ryan Libby <rlibby@gmail.com>
Reviewed by:	kib
Seen by:	alc
Sponsored by:	EMC / Isilon Storage Division
Differential Revision:	https://reviews.freebsd.org/D4326
2015-12-06 17:46:12 +00:00
..
_vm_radix.h
default_pager.c Place VM objects on the object list when created and never remove them. 2015-05-08 19:43:37 +00:00
device_pager.c Minor cleanup. 2015-11-29 11:37:25 +00:00
memguard.c
memguard.h
phys_pager.c Place VM objects on the object list when created and never remove them. 2015-05-08 19:43:37 +00:00
pmap.h Properly sort the function declarations added in r286296 2015-08-05 10:48:32 +00:00
redzone.c
redzone.h
sg_pager.c Place VM objects on the object list when created and never remove them. 2015-05-08 19:43:37 +00:00
swap_pager.c Mark swap_pager_putpages static at its definition. It was already 2015-10-05 21:29:17 +00:00
swap_pager.h
uma_core.c Consistently enforce the restriction against calling malloc/free when in a 2015-11-19 14:04:53 +00:00
uma_dbg.c If INVARIANTS is specified, add ctor/dtor to junk memory if they are 2015-06-25 20:44:46 +00:00
uma_dbg.h
uma_int.h Revert r281451. It causes a panic/hang early in boot for a number of 2015-04-24 17:03:53 +00:00
uma.h The vmem callback to reclaim kmem arena address space on low or 2015-05-09 20:08:36 +00:00
vm_domain.c Add an initial NUMA affinity/policy configuration for threads and processes. 2015-07-11 15:21:37 +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 Add a new file operations hook for mmap operations. File type-specific 2015-06-04 19:41:15 +00:00
vm_fault.c vm_fault_hold: handle vm_page_rename failure 2015-12-06 17:46:12 +00:00
vm_glue.c Exploit r288122 to avoid pointlessly enqueueing a page that is about to be 2015-10-09 03:38:58 +00:00
vm_init.c Parallelize the buffer cache and rewrite getnewbuf(). This results in a 2015-10-14 02:10:07 +00:00
vm_kern.c Export various helper variables describing the layout and size of 2015-11-12 22:00:59 +00:00
vm_kern.h
vm_map.c Remove a check which caused spurious SIGSEGV on usermode access to the 2015-09-09 06:19:33 +00:00
vm_map.h Do not pretend that vm_fault(9) supports unwiring the address. Rename 2015-07-30 18:28:34 +00:00
vm_meter.c Remove the v_cache_min and v_cache_max sysctls. They are unused and have 2015-09-11 03:00:20 +00:00
vm_mmap.c Add a local variable initialization needed in the OBJT_DEFAULT case. 2015-07-05 22:26:19 +00:00
vm_object.c Pull vm_object_scan_all_shadowed out of vm_object_backing_scan 2015-12-03 17:21:10 +00:00
vm_object.h As a step towards the elimination of PG_CACHED pages, rework the handling 2015-09-30 23:06:29 +00:00
vm_page.c Ensure that deactivated pages that are not expected to be reused are 2015-11-08 01:36:18 +00:00
vm_page.h Rework the test which raises OOM condition. Right now, the code 2015-11-16 06:26:26 +00:00
vm_pageout.c In vm_pageout_grow_cache(), do not re-try the inactive queue when 2015-11-27 19:43:36 +00:00
vm_pageout.h Reduce the scope of a variable to the only file where it is used. 2015-10-03 19:27:52 +00:00
vm_pager.c - Make 'struct buf *buf' private to vfs_bio.c. Having a global variable 2015-07-29 02:26:57 +00:00
vm_pager.h o Un-inline vm_pager_get_pages(), vm_pager_get_pages_async(). 2015-06-17 22:44:27 +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 Add an initial NUMA affinity/policy configuration for threads and processes. 2015-07-11 15:21:37 +00:00
vm_phys.h Add an initial NUMA affinity/policy configuration for threads and processes. 2015-07-11 15:21:37 +00:00
vm_radix.c
vm_radix.h
vm_reserv.c Correct an error in vm_reserv_reclaim_contig(). In the highly unusual 2015-11-26 19:12:18 +00:00
vm_reserv.h
vm_unix.c Implement lockless resource limits. 2015-06-10 10:48:12 +00:00
vm_zeroidle.c
vm.h
vnode_pager.c Record proper commit message for r291157. 2015-11-22 09:50:13 +00:00
vnode_pager.h