diff options
author | David S. Miller <davem@davemloft.net> | 2018-08-02 10:55:32 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2018-08-02 10:55:32 -0700 |
commit | 89b1698c93a9dee043154f33d96bca9964e705f1 (patch) | |
tree | dd9dcb1965baae8edcf0b496aaa6a70609b6fc11 /drivers/char/random.c | |
parent | ffd7ce3cd9c294f1ff49ec02cdbd1bc7cb913db6 (diff) | |
parent | e30cb13c5a09ff5f043a6570c32e49b063bea6a1 (diff) |
Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
The BTF conflicts were simple overlapping changes.
The virtio_net conflict was an overlap of a fix of statistics counter,
happening alongisde a move over to a bonafide statistics structure
rather than counting value on the stack.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/char/random.c')
-rw-r--r-- | drivers/char/random.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index cd888d4ee605..bd449ad52442 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1895,14 +1895,22 @@ static int write_pool(struct entropy_store *r, const char __user *buffer, size_t count) { size_t bytes; - __u32 buf[16]; + __u32 t, buf[16]; const char __user *p = buffer; while (count > 0) { + int b, i = 0; + bytes = min(count, sizeof(buf)); if (copy_from_user(&buf, p, bytes)) return -EFAULT; + for (b = bytes ; b > 0 ; b -= sizeof(__u32), i++) { + if (!arch_get_random_int(&t)) + break; + buf[i] ^= t; + } + count -= bytes; p += bytes; |