diff options
| author | rstone <rstone@FreeBSD.org> | 2015-09-17 23:31:44 +0000 |
|---|---|---|
| committer | rstone <rstone@FreeBSD.org> | 2015-09-17 23:31:44 +0000 |
| commit | 26a0cf375aceedb2911b79b762cbc4f28510040a (patch) | |
| tree | 0e2ce9e28f39248b1d87c63f4962c025c0735e6e /sys/i386/i386 | |
| parent | a5578a13a31cb57fe230f49fe8e7f959295992cd (diff) | |
| download | FreeBSD-src-26a0cf375aceedb2911b79b762cbc4f28510040a.zip FreeBSD-src-26a0cf375aceedb2911b79b762cbc4f28510040a.tar.gz | |
MFC r280957
Fix integer truncation bug in malloc(9)
A couple of internal functions used by malloc(9) and uma truncated
a size_t down to an int. This could cause any number of issues
(e.g. indefinite sleeps, memory corruption) if any kernel
subsystem tried to allocate 2GB or more through malloc. zfs would
attempt such an allocation when run on a system with 2TB or more
of RAM.
Diffstat (limited to 'sys/i386/i386')
| -rw-r--r-- | sys/i386/i386/pmap.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c index 540eb65..299ee77 100644 --- a/sys/i386/i386/pmap.c +++ b/sys/i386/i386/pmap.c @@ -352,7 +352,8 @@ static pt_entry_t *pmap_pte_quick(pmap_t pmap, vm_offset_t va); static void pmap_pte_release(pt_entry_t *pte); static int pmap_unuse_pt(pmap_t, vm_offset_t, struct spglist *); #if defined(PAE) || defined(PAE_TABLES) -static void *pmap_pdpt_allocf(uma_zone_t zone, int bytes, u_int8_t *flags, int wait); +static void *pmap_pdpt_allocf(uma_zone_t zone, vm_size_t bytes, uint8_t *flags, + int wait); #endif static void pmap_set_pg(void); @@ -670,7 +671,7 @@ pmap_page_init(vm_page_t m) #if defined(PAE) || defined(PAE_TABLES) static void * -pmap_pdpt_allocf(uma_zone_t zone, int bytes, u_int8_t *flags, int wait) +pmap_pdpt_allocf(uma_zone_t zone, vm_size_t bytes, uint8_t *flags, int wait) { /* Inform UMA that this allocator uses kernel_map/object. */ |
