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I have received some reports of out-of-memory errors on some older AMD architectures. These errors are what I would expect to see if crypt_stat->key were split between two separate pages. eCryptfs should not assume that any of the memory sent through virt_to_scatterlist() is all contained in a single page, and so this patch allocates two scatterlist structs instead of one when processing keys. I have received confirmation from one person affected by this bug that this patch resolves the issue for him, and so I am submitting it for inclusion in a future stable release. Note that virt_to_scatterlist() runs sg_init_table() on the scatterlist structs passed to it, so the calls to sg_init_table() in decrypt_passphrase_encrypted_session_key() are redundant. Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com> Reported-by: Paulo J. S. Silva <pjssilva@ime.usp.br> Cc: "Leon Woestenberg" <leon.woestenberg@gmail.com> Cc: Tim Gardner <tim.gardner@canonical.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| crypto.c | ||
| debug.c | ||
| dentry.c | ||
| ecryptfs_kernel.h | ||
| file.c | ||
| inode.c | ||
| keystore.c | ||
| kthread.c | ||
| main.c | ||
| Makefile | ||
| messaging.c | ||
| miscdev.c | ||
| mmap.c | ||
| read_write.c | ||
| super.c | ||