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Subject: [PATCH] hide kernel addresses via %pK in /proc/timer_list
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Organization: Canonical

In the continuing effort to avoid kernel addresses leaking to unprivileged
users, this patch switches to %pK for /proc/timer_list reporting.

Signed-off-by: Kees Cook <kees.cook@xxxxxxxxxxxxx>
---
kernel/time/timer_list.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c
index 32a19f9..3258455 100644
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -41,7 +41,7 @@ static void print_name_offset(struct seq_file *m, void *sym)
char symname[KSYM_NAME_LEN];

if (lookup_symbol_name((unsigned long)sym, symname) < 0)
- SEQ_printf(m, "<%p>", sym);
+ SEQ_printf(m, "<%pK>", sym);
else
SEQ_printf(m, "%s", symname);
}
@@ -112,7 +112,7 @@ next_one:
static void
print_base(struct seq_file *m, struct hrtimer_clock_base *base, u64 now)
{
- SEQ_printf(m, " .base: %p\n", base);
+ SEQ_printf(m, " .base: %pK\n", base);
SEQ_printf(m, " .index: %d\n",
base->index);
SEQ_printf(m, " .resolution: %Lu nsecs\n",
--
1.7.2.3

--
Kees Cook
Ubuntu Security Team
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