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| author | zont <zont@FreeBSD.org> | 2012-09-03 09:34:46 +0000 |
|---|---|---|
| committer | zont <zont@FreeBSD.org> | 2012-09-03 09:34:46 +0000 |
| commit | f93fc1d7195e06a52ec2829e72969185b87aa86b (patch) | |
| tree | eef0bff476e94712de9de424f0654faed25c2a86 /sys/vm/vm_map.c | |
| parent | 867f7e9a1267bc9f51f1019e4b6c5f31b4c41f58 (diff) | |
| download | FreeBSD-src-f93fc1d7195e06a52ec2829e72969185b87aa86b.zip FreeBSD-src-f93fc1d7195e06a52ec2829e72969185b87aa86b.tar.gz | |
- After r240026 sgrowsiz should be used in a safer maner.
Approved by: kib (mentor)
MCF after: 1 week
Diffstat (limited to 'sys/vm/vm_map.c')
| -rw-r--r-- | sys/vm/vm_map.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c index aefed47..da96bab 100644 --- a/sys/vm/vm_map.c +++ b/sys/vm/vm_map.c @@ -3245,7 +3245,7 @@ vm_map_stack(vm_map_t map, vm_offset_t addrbos, vm_size_t max_ssize, { vm_map_entry_t new_entry, prev_entry; vm_offset_t bot, top; - vm_size_t init_ssize; + vm_size_t growsize, init_ssize; int orient, rv; rlim_t vmemlim; @@ -3264,7 +3264,8 @@ vm_map_stack(vm_map_t map, vm_offset_t addrbos, vm_size_t max_ssize, addrbos + max_ssize < addrbos) return (KERN_NO_SPACE); - init_ssize = (max_ssize < sgrowsiz) ? max_ssize : sgrowsiz; + growsize = sgrowsiz; + init_ssize = (max_ssize < growsize) ? max_ssize : growsize; PROC_LOCK(curthread->td_proc); vmemlim = lim_cur(curthread->td_proc, RLIMIT_VMEM); @@ -3357,6 +3358,7 @@ vm_map_growstack(struct proc *p, vm_offset_t addr) struct vmspace *vm = p->p_vmspace; vm_map_t map = &vm->vm_map; vm_offset_t end; + vm_size_t growsize; size_t grow_amount, max_grow; rlim_t stacklim, vmemlim; int is_procstack, rv; @@ -3476,8 +3478,9 @@ Retry: PROC_UNLOCK(p); #endif - /* Round up the grow amount modulo SGROWSIZ */ - grow_amount = roundup (grow_amount, sgrowsiz); + /* Round up the grow amount modulo sgrowsiz */ + growsize = sgrowsiz; + grow_amount = roundup(grow_amount, growsize); if (grow_amount > stack_entry->avail_ssize) grow_amount = stack_entry->avail_ssize; if (is_procstack && (ctob(vm->vm_ssize) + grow_amount > stacklim)) { |
