Revision 6b7339f4c31ad69c8e9c0b2859276e22cf72176d authored by Kirill A. Shutemov on 06 July 2015, 20:18:37 UTC, committed by Linus Torvalds on 09 July 2015, 18:12:48 UTC
Reading page fault handler code I've noticed that under right circumstances kernel would map anonymous pages into file mappings: if the VMA doesn't have vm_ops->fault() and the VMA wasn't fully populated on ->mmap(), kernel would handle page fault to not populated pte with do_anonymous_page(). Let's change page fault handler to use do_anonymous_page() only on anonymous VMA (->vm_ops == NULL) and make sure that the VMA is not shared. For file mappings without vm_ops->fault() or shred VMA without vm_ops, page fault on pte_none() entry would lead to SIGBUS. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Willy Tarreau <w@1wt.eu> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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ripemd.h
/*
* Common values for RIPEMD algorithms
*/
#ifndef _CRYPTO_RMD_H
#define _CRYPTO_RMD_H
#define RMD128_DIGEST_SIZE 16
#define RMD128_BLOCK_SIZE 64
#define RMD160_DIGEST_SIZE 20
#define RMD160_BLOCK_SIZE 64
#define RMD256_DIGEST_SIZE 32
#define RMD256_BLOCK_SIZE 64
#define RMD320_DIGEST_SIZE 40
#define RMD320_BLOCK_SIZE 64
/* initial values */
#define RMD_H0 0x67452301UL
#define RMD_H1 0xefcdab89UL
#define RMD_H2 0x98badcfeUL
#define RMD_H3 0x10325476UL
#define RMD_H4 0xc3d2e1f0UL
#define RMD_H5 0x76543210UL
#define RMD_H6 0xfedcba98UL
#define RMD_H7 0x89abcdefUL
#define RMD_H8 0x01234567UL
#define RMD_H9 0x3c2d1e0fUL
/* constants */
#define RMD_K1 0x00000000UL
#define RMD_K2 0x5a827999UL
#define RMD_K3 0x6ed9eba1UL
#define RMD_K4 0x8f1bbcdcUL
#define RMD_K5 0xa953fd4eUL
#define RMD_K6 0x50a28be6UL
#define RMD_K7 0x5c4dd124UL
#define RMD_K8 0x6d703ef3UL
#define RMD_K9 0x7a6d76e9UL
#endif
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