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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2023-10-09 13:52:37 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2023-10-13 11:17:11 +0200 |
| commit | b41b1c25e966f1d305ab5b5ad791b0b7efa2bd82 (patch) | |
| tree | 58f00370b08217db3e1a05f2522012ac610ae2a8 /lib | |
| parent | 4760228e8bbdf80d28e4cdcc3404d4ae5476a2e2 (diff) | |
| download | barebox-b41b1c25e966f1d305ab5b5ad791b0b7efa2bd82.tar.gz barebox-b41b1c25e966f1d305ab5b5ad791b0b7efa2bd82.tar.xz | |
lib: stackprot: improve error message on missing HWRNG
ERROR: no HWRNG available!
WARNING: stackprot: proceeding without randomized stack protector
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20231009115239.2291016-3-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/stackprot.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/stackprot.c b/lib/stackprot.c index aa0e88603a..c1cc19aadd 100644 --- a/lib/stackprot.c +++ b/lib/stackprot.c @@ -1,5 +1,8 @@ /* SPDX-License-Identifier: GPL-2.0-only */ -#include <printk.h> + +#define pr_fmt(fmt) "stackprot: " fmt + +#include <linux/printk.h> #include <linux/kernel.h> #include <linux/export.h> #include <init.h> @@ -27,6 +30,11 @@ EXPORT_SYMBOL(__stack_chk_fail); static __no_stack_protector int stackprot_randomize_guard(void) { - return get_crypto_bytes(&__stack_chk_guard, sizeof(__stack_chk_guard)); + int ret; + + ret = get_crypto_bytes(&__stack_chk_guard, sizeof(__stack_chk_guard)); + if (ret) + pr_warn("proceeding without randomized stack protector\n"); + return 0; } late_initcall(stackprot_randomize_guard); |