Daniel Thompson ad99b5105c kdb: Censor attempts to set PROMPT without ENABLE_MEM_READ ... Currently the PROMPT variable could be abused to provoke the printf() machinery to read outside the current stack frame. Normally this doesn't matter becaues md is already a much better tool for reading from memory. However the md command can be disabled by not setting KDB_ENABLE_MEM_READ. Let's also prevent PROMPT from being modified in these circumstances. Whilst adding a comment to help future code reviewers we also remove the #ifdef where PROMPT in consumed. There is no problem passing an unused (0) to snprintf when !CONFIG_SMP. argument Reported-by: Wang Xiayang <xywang.sjtu@sjtu.edu.cn> Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Douglas Anderson <dianders@chromium.org>		2020-04-01 16:59:11 +01:00
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kdb	kdb: Censor attempts to set PROMPT without ENABLE_MEM_READ	2020-04-01 16:59:11 +01:00
debug_core.c	kdb: Avoid array subscript warnings on non-SMP builds	2019-10-24 15:34:58 +01:00
debug_core.h	kdb: Fix stack crawling on 'running' CPUs that aren't the master	2019-10-10 16:28:48 +01:00
gdbstub.c	gdbstub: Replace strcpy() by strscpy()	2019-05-02 13:40:27 +01:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00