| Message ID | 54f67bb7ac486c1350f2fa8905cd279f94b9dfb1.1566382841.git.christophe.leroy@c-s.fr (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 3bbd2343734e44de92238eea1a5cd3ad32a6baf0 |
| Headers | show |
| Series | powerpc/8xx: set STACK_END_MAGIC earlier on the init_stack | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch next (c9633332103e55bc73d80d07ead28b95a22a85a3) |
| snowpatch_ozlabs/build-ppc64le | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64be | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64e | success | Build succeeded |
| snowpatch_ozlabs/build-pmac32 | success | Build succeeded |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 16 lines checked |
On Wed, 2019-08-21 at 10:20:51 UTC, Christophe Leroy wrote: > Today, the STACK_END_MAGIC is set on init_stack in start_kernel(). > > To avoid a false 'Thread overran stack, or stack corrupted' message > on early Oopses, setup STACK_END_MAGIC as soon as possible. > > Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/3bbd2343734e44de92238eea1a5cd3ad32a6baf0 cheers
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 5ab9178c2347..b8ca5b43e587 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -15,6 +15,7 @@ */ #include <linux/init.h> +#include <linux/magic.h> #include <asm/processor.h> #include <asm/page.h> #include <asm/mmu.h> @@ -741,6 +742,9 @@ start_here: /* stack */ lis r1,init_thread_union@ha addi r1,r1,init_thread_union@l + lis r0, STACK_END_MAGIC@h + ori r0, r0, STACK_END_MAGIC@l + stw r0, 0(r1) li r0,0 stwu r0,THREAD_SIZE-STACK_FRAME_OVERHEAD(r1)
Today, the STACK_END_MAGIC is set on init_stack in start_kernel(). To avoid a false 'Thread overran stack, or stack corrupted' message on early Oopses, setup STACK_END_MAGIC as soon as possible. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- arch/powerpc/kernel/head_8xx.S | 4 ++++ 1 file changed, 4 insertions(+)