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random: fix warning message on ia64 and parisc

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commit 51d96dc2e2dc2cf9b81cf976cc93c51ba3ac2f92 upstream.

Fix the warning message on the parisc and IA64 architectures to show the
correct function name of the caller by using %pS instead of %pF. The
message is printed with the value of _RET_IP_ which calls
__builtin_return_address(0) and as such returns the IP address caller
instead of pointer to a function descriptor of the caller.

The effect of this patch is visible on the parisc and ia64 architectures
only since those are the ones which use function descriptors while on
all others %pS and %pF will behave the same.

Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Fixes: eecabf567422 ("random: suppress spammy warnings about unseeded randomness")
Fixes: d06bfd1989fe ("random: warn when kernel uses unseeded randomness")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Helge Deller 2017-08-08 18:28:41 +02:00 committed by Greg Kroah-Hartman
parent 2235bed1ee
commit 1038473754
1 changed files with 1 additions and 1 deletions
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2
drivers/char/random.c
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@ -1556,7 +1556,7 @@ static void _warn_unseeded_randomness(const char *func_name, void *caller,
#ifndef CONFIG_WARN_ALL_UNSEEDED_RANDOM
print_once = true;
#endif
pr_notice("random: %s called from %pF with crng_init=%d\n",
pr_notice("random: %s called from %pS with crng_init=%d\n",
func_name, caller, crng_init);
}