Daniel Thompson 739c2f07b2 kdb: Fix the putarea helper function ... [ Upstream commit c1cb81429d ] Currently kdb_putarea_size() uses copy_from_kernel_nofault() to write *to* arbitrary kernel memory. This is obviously wrong and means the memory modify ('mm') command is a serious risk to debugger stability: if we poke to a bad address we'll double-fault and lose our debug session. Fix this the (very) obvious way. Note that there are two Fixes: tags because the API was renamed and this patch will only trivially backport as far as the rename (and this is probably enough). Nevertheless Christoph's rename did not introduce this problem so I wanted to record that! Fixes: fe557319aa ("maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault") Fixes: 5d5314d679 ("kdb: core for kgdb back end (1 of 2)") Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20220128144055.207267-1-daniel.thompson@linaro.org Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-04-08 13:58:32 +02:00
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kdb	kdb: Fix the putarea helper function	2022-04-08 13:58:32 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
debug_core.c	kernel: debug: Convert to SPDX identifier	2021-09-06 14:31:11 +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	kernel: debug: Convert to SPDX identifier	2021-09-06 14:31:11 +01:00