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authorArnd Bergmann <arnd@arndb.de>2017-11-13 17:50:59 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-13 09:48:56 -0800
commit01c313dded34a16ef69e3972ceca687ba8a7cdf2 (patch)
parent37c6b6f22170f781fb24b11d61a864aa905e2c89 (diff)
kallsyms: fix building without printk
Building kallsyms fails without CONFIG_PRINTK due to a missing declaration: kernel/kallsyms.c: In function 'kallsyms_show_value': kernel/kallsyms.c:670:10: error: 'kptr_restrict' undeclared (first use in this function); did you mean 'keyring_restrict'? This moves the declaration outside of the #ifdef guard, the definition is already available without CONFIG_PRINTK. Fixes: c0f3ea158939 ("stop using '%pK' for /proc/kallsyms pointer values") Signed-off-by: Arnd Bergmann <arnd@arndb.de> [ I clearly need to start doing "allnoconfig" builds too, or just have a test branch for the 0day robot - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 335926039adc..905bba92f015 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -189,7 +189,6 @@ extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
extern int printk_delay_msec;
extern int dmesg_restrict;
-extern int kptr_restrict;
extern int
devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, void __user *buf,
@@ -280,6 +279,8 @@ static inline void printk_safe_flush_on_panic(void)
+extern int kptr_restrict;
extern asmlinkage void dump_stack(void) __cold;
#ifndef pr_fmt

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