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kernel/printk: use symbolic defines for console loglevels

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... instead of naked numbers.

Stuff in sysrq.c used to set it to 8 which is supposed to mean above
default level so set it to DEBUG instead as we're terminating/killing all
tasks and we want to be verbose there.

Also, correct the check in x86_64_start_kernel which should be >= as
we're clearly issuing the string there for all debug levels, not only
the magical 10.

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Joe Perches <joe@perches.com>
Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Borislav Petkov
2014-06-04 16:11:46 -07:00
committed by Linus Torvalds
parent 84b5ec8a9d
commit a8fe19ebfb
10 changed files with 36 additions and 32 deletions
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8
drivers/tty/sysrq.c
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@@ -88,7 +88,7 @@ static void sysrq_handle_loglevel(int key)
int i;
i = key - '0';
console_loglevel = 7;
console_loglevel = CONSOLE_LOGLEVEL_DEFAULT;
printk("Loglevel set to %d\n", i);
console_loglevel = i;
}
@@ -343,7 +343,7 @@ static void send_sig_all(int sig)
static void sysrq_handle_term(int key)
{
send_sig_all(SIGTERM);
console_loglevel = 8;
console_loglevel = CONSOLE_LOGLEVEL_DEBUG;
}
static struct sysrq_key_op sysrq_term_op = {
.handler = sysrq_handle_term,
@@ -387,7 +387,7 @@ static struct sysrq_key_op sysrq_thaw_op = {
static void sysrq_handle_kill(int key)
{
send_sig_all(SIGKILL);
console_loglevel = 8;
console_loglevel = CONSOLE_LOGLEVEL_DEBUG;
}
static struct sysrq_key_op sysrq_kill_op = {
.handler = sysrq_handle_kill,
@@ -520,7 +520,7 @@ void __handle_sysrq(int key, bool check_mask)
* routing in the consumers of /proc/kmsg.
*/
orig_log_level = console_loglevel;
console_loglevel = 7;
console_loglevel = CONSOLE_LOGLEVEL_DEFAULT;
printk(KERN_INFO "SysRq : ");
op_p = __sysrq_get_key_op(key);