kernel/linux.git, branch v2.6.16.56-rc1

Linux 2.6.16.56-rc1

2007-10-19T17:15:19+00:00

Don't allow the stack to grow into hugetlb reserved regions (CVE-2007-3739)

2007-10-19T17:05:10+00:00

When expanding the stack, we don't currently check if the VMA will cross into an area of the address space that is reserved for hugetlb pages. Subsequent faults on the expanded portion of such a VMA will confuse the low-level MMU code, resulting in an OOPS. Check for this. Signed-off-by: Adam Litke Signed-off-by: Adrian Bunk

drivers/video/macmodes.c:mac_find_mode() mustn't be __init

2007-10-19T16:51:07+00:00

If it's EXPORT_SYMBOL'ed it can't be __devinit. Reported by Mikael Pettersson. Signed-off-by: Adrian Bunk

hugetlb: fix prio_tree unit (CVE-2007-4133)

2007-10-19T12:30:18+00:00

hugetlb_vmtruncate_list was misconverted to prio_tree: its prio_tree is in units of PAGE_SIZE (PAGE_CACHE_SIZE) like any other, not HPAGE_SIZE (whereas its radix_tree is kept in units of HPAGE_SIZE, otherwise slots would be absurdly sparse). At first I thought the error benign, just calling __unmap_hugepage_range on more vmas than necessary; but on 32-bit machines, when the prio_tree is searched correctly, it happens to ensure the v_offset calculation won't overflow. As it stood, when truncating at or beyond 4GB, it was liable to discard pages COWed from lower offsets; or even to clear pmd entries of preceding vmas, triggering exit_mmap's BUG_ON(nr_ptes). Signed-off-by: Hugh Dickins Signed-off-by: Adrian Bunk

hugetlbfs: add Kconfig help text

2007-10-19T00:04:58+00:00

In kernel bugzilla #6248 (http://bugzilla.kernel.org/show_bug.cgi?id=6248), Adrian Bunk notes that CONFIG_HUGETLBFS is missing Kconfig help text. Signed-off-by: Arthur Othieno Signed-off-by: Adrian Bunk

hugetlbfs doc. update

2007-10-19T00:03:58+00:00

Fix typos, spelling, etc., in Doc/vm/hugetlbpage.txt. Signed-off-by: Randy Dunlap Signed-off-by: Adrian Bunk

x86: HUGETLBFS and DEBUG_PAGEALLOC are incompatible

2007-10-18T23:59:17+00:00

DEBUG_PAGEALLOC is not compatible with hugetlb page support. That debug option turns off PSE. Once it is turned off in CR4, the cpu will ignore pse bit in the pmd and causing infinite page-not- present faults. So disable DEBUG_PAGEALLOC if the user selected hugetlbfs. Signed-off-by: Ken Chen Signed-off-by: Adrian Bunk

[IA64] lazy_mmu_prot_update needs to be aware of huge pages

2007-10-18T23:52:21+00:00

Function lazy_mmu_prot_update is also used on huge pages when it is called by set_huge_ptep_writable, but it isn't aware of huge pages. Signed-off-by: Zhang Yanmin Acked-by: Ken Chen Signed-off-by: Tony Luck Signed-off-by: Adrian Bunk

SELinux: clear parent death signal on SID transitions

2007-10-18T23:27:51+00:00

Clear parent death signal on SID transitions to prevent unauthorized signaling between SIDs. Signed-off-by: Stephen Smalley Acked-by: Eric Paris Signed-off-by: James Morris Signed-off-by: Adrian Bunk

make UML compile (FC6/x86-64)

2007-10-18T21:46:58+00:00

I need this patch to get a UML kernel to compile. This is with the kernel headers in FC6 which are automatically generated from the kernel tree. Some headers are missing but those files don't need them. At least it appears so since the resuling kernel works fine. Tested on x86-64. Signed-off-by: Ulrich Drepper Signed-off-by: Adrian Bunk