Sumit Garg a0a4e00a41 kdb: Make memory allocations more robust ... commit 93f7a6d818 upstream. Currently kdb uses in_interrupt() to determine whether its library code has been called from the kgdb trap handler or from a saner calling context such as driver init. This approach is broken because in_interrupt() alone isn't able to determine kgdb trap handler entry from normal task context. This can happen during normal use of basic features such as breakpoints and can also be trivially reproduced using: echo g > /proc/sysrq-trigger We can improve this by adding check for in_dbg_master() instead which explicitly determines if we are running in debugger context. Cc: stable@vger.kernel.org Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Link: https://lore.kernel.org/r/1611313556-4004-1-git-send-email-sumit.garg@linaro.org Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-03-03 18:22:36 +01:00
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.gitignore
kdb_bp.c	mm/init: Add 'rodata=off' boot cmdline parameter to disable read-only kernel mappings	2016-02-22 08:51:37 +01:00
kdb_bt.c	kdb: Don't back trace on a cpu that didn't round up	2019-02-12 19:46:09 +01:00
kdb_cmds
kdb_debugger.c	kdb: Don't back trace on a cpu that didn't round up	2019-02-12 19:46:09 +01:00
kdb_io.c	kdb: Fix pager search for multi-line strings	2020-10-29 09:07:10 +01:00
kdb_keyboard.c
kdb_main.c	kdb: do a sanity check on the cpu in kdb_per_cpu()	2020-01-27 14:46:34 +01:00
kdb_private.h	kdb: Make memory allocations more robust	2021-03-03 18:22:36 +01:00
kdb_support.c	kdb: use memmove instead of overlapping memcpy	2018-12-08 13:03:36 +01:00
Makefile