mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 21:38:32 +08:00
98a0465531
When CONFIG_PRINTK is not set, PRINTK_MESSAGE_MAX is 0. This leads to a zero-sized array @outbuf in @printk_shared_pbufs. In console_flush_all() a pointer to the first element of the array is assigned with: char *outbuf = &printk_shared_pbufs.outbuf[0]; For !CONFIG_PRINTK this leads to a compiler warning: warning: array subscript 0 is outside array bounds of 'char[0]' [-Warray-bounds] This is not really dangerous because printk_get_next_message() always returns false for !CONFIG_PRINTK, which leads to @outbuf never being used. However, it makes no sense to even compile these functions for !CONFIG_PRINTK. Extend the existing '#ifdef CONFIG_PRINTK' block to contain the formatting and emitting functions since these have no purpose in !CONFIG_PRINTK. This also allows removing several more !CONFIG_PRINTK dummies as well as moving @suppress_panic_printk into a CONFIG_PRINTK block. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202309201724.M9BMAQIh-lkp@intel.com/ Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20230920155238.670439-1-john.ogness@linutronix.de |
||
|---|---|---|
| .. | ||
| braille.c | ||
| braille.h | ||
| console_cmdline.h | ||
| index.c | ||
| internal.h | ||
| Makefile | ||
| nbcon.c | ||
| printk_ringbuffer.c | ||
| printk_ringbuffer.h | ||
| printk_safe.c | ||
| printk.c | ||
| sysctl.c | ||