Daniel Thompson c1cb81429d kdb: Fix the putarea helper function ... 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		2022-03-24 16:39:47 +00:00
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.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
kdb_bp.c	kdb: Rename members of struct kdbtab_t	2021-07-27 17:05:06 +01:00
kdb_bt.c	kdb: Adopt scheduler's task classification	2021-11-03 17:21:37 +00:00
kdb_cmds	kdb: cleanup unused variables missed in the original kdb merge	2011-08-01 13:23:58 -05:00
kdb_debugger.c	kdb: Get rid of custom debug heap allocator	2021-07-27 14:46:11 +01:00
kdb_io.c	kdb: Fix pager search for multi-line strings	2020-10-01 14:44:08 +01:00
kdb_keyboard.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
kdb_main.c	kdb: Adopt scheduler's task classification	2021-11-03 17:21:37 +00:00
kdb_private.h	kdb: Adopt scheduler's task classification	2021-11-03 17:21:37 +00:00
kdb_support.c	kdb: Fix the putarea helper function	2022-03-24 16:39:47 +00:00
Makefile	kdb: Get rid of broken attempt to print CCVERSION in kdb summary	2019-05-12 09:50:43 +01:00