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freebsd-dev/sys/vm
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Matthew Dillon 1f6889a1eb Fix null-pointer dereference crash when the system is intentionally 
run out of KVM through a mmap()/fork() bomb that allocates hundreds
    of thousands of vm_map_entry structures.

    Add panic to make null-pointer dereference crash a little more verbose.

    Add a new sysctl, vm.max_proc_mmap, which specifies the maximum number
    of mmap()'d spaces (discrete vm_map_entry's in the process).  The value
    defaults to around 9000 for a 128MB machine.  The test is scaled for the
    number of processes sharing a vmspace (aka linux threads).  Setting
    the value to 0 disables the feature.

PR: kern/16573
Approved by: jkh
2000-02-16 21:11:33 +00:00
..
default_pager.c Remove unused #include's. 1999-11-07 20:03:54 +00:00
device_pager.c Remove unused #include's. 1999-11-07 20:03:54 +00:00
pmap.h Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
swap_pager.c Fix the swap backed vn case - this was broken by my rev 1.128 to 1999-12-28 07:30:55 +00:00
swap_pager.h Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
vm_extern.h Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
vm_fault.c Add MAP_NOSYNC feature to mmap(), and MADV_NOSYNC and MADV_AUTOSYNC to 1999-12-12 03:19:33 +00:00
vm_glue.c User ldt sharing. 1999-12-06 04:53:08 +00:00
vm_init.c useracc() the prequel: 1999-10-29 18:09:36 +00:00
vm_kern.c useracc() the prequel: 1999-10-29 18:09:36 +00:00
vm_kern.h Fix null-pointer dereference crash when the system is intentionally 2000-02-16 21:11:33 +00:00
vm_map.c Fix null-pointer dereference crash when the system is intentionally 2000-02-16 21:11:33 +00:00
vm_map.h Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
vm_meter.c useracc() the prequel: 1999-10-29 18:09:36 +00:00
vm_mmap.c Fix null-pointer dereference crash when the system is intentionally 2000-02-16 21:11:33 +00:00
vm_object.c Add MAP_NOSYNC feature to mmap(), and MADV_NOSYNC and MADV_AUTOSYNC to 1999-12-12 03:19:33 +00:00
vm_object.h Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
vm_page.c Add MAP_NOSYNC feature to mmap(), and MADV_NOSYNC and MADV_AUTOSYNC to 1999-12-12 03:19:33 +00:00
vm_page.h Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
vm_pageout.c Lock reporting and assertion changes. 1999-12-11 16:13:02 +00:00
vm_pageout.h Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
vm_pager.c useracc() the prequel: 1999-10-29 18:09:36 +00:00
vm_pager.h Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
vm_param.h Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
vm_swap.c The swapdev_vp changes made to rip out the swap specfs interaction 2000-01-25 17:49:12 +00:00
vm_unix.c Remove unused #include's. 1999-11-07 20:03:54 +00:00
vm_zone.c Lock reporting and assertion changes. 1999-12-11 16:13:02 +00:00
vm_zone.h $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
vm.h Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00
vnode_pager.c useracc() the prequel: 1999-10-29 18:09:36 +00:00
vnode_pager.h Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 1999-12-29 05:07:58 +00:00