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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-11-05 21:40:40 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-06 21:30:38 +0100 |
| commit | d2635f2012a44e3d469ab9a4022162dbe0e53f21 (patch) | |
| tree | 82a5a4ab8294a039d8fad83f9c0c729c8a4bf361 /kernel/signal.c | |
| parent | mm/page_alloc.c: show watermark_boost of zone in zoneinfo (diff) | |
| download | linux-d2635f2012a44e3d469ab9a4022162dbe0e53f21.tar.xz linux-d2635f2012a44e3d469ab9a4022162dbe0e53f21.zip | |
mm: create a new system state and fix core_kernel_text()
core_kernel_text() considers that until system_state in at least
SYSTEM_RUNNING, init memory is valid.
But init memory is freed a few lines before setting SYSTEM_RUNNING, so
we have a small period of time when core_kernel_text() is wrong.
Create an intermediate system state called SYSTEM_FREEING_INIT that is
set before starting freeing init memory, and use it in
core_kernel_text() to report init memory invalid earlier.
Link: https://lkml.kernel.org/r/9ecfdee7dd4d741d172cb93ff1d87f1c58127c9a.1633001016.git.christophe.leroy@csgroup.eu
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/signal.c')
0 files changed, 0 insertions, 0 deletions