This is a note to let you know that I've just added the patch titled
powerpc/64/interrupt: Fix false warning in context tracking due to idle state
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-64-interrupt-fix-false-warning-in-context-tr.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 33d326eb676d9a518f7981f765a8a12914a799d2
Author: Nicholas Piggin <npiggin@xxxxxxxxx>
Date: Mon Sep 26 15:42:59 2022 +1000
powerpc/64/interrupt: Fix false warning in context tracking due to idle state
[ Upstream commit 56adbb7a8b6cc7fc9b940829c38494e53c9e57d1 ]
Commit 171476775d32 ("context_tracking: Convert state to atomic_t")
added a CONTEXT_IDLE state which can be encountered by interrupts from
kernel mode in the idle thread, causing a false positive warning.
Fixes: 171476775d32 ("context_tracking: Convert state to atomic_t")
Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220926054305.2671436-2-npiggin@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/powerpc/include/asm/interrupt.h b/arch/powerpc/include/asm/interrupt.h
index 8069dbc4b8d1..b61555e30c7c 100644
--- a/arch/powerpc/include/asm/interrupt.h
+++ b/arch/powerpc/include/asm/interrupt.h
@@ -195,7 +195,8 @@ static inline void interrupt_enter_prepare(struct pt_regs *regs)
* so avoid recursion.
*/
if (TRAP(regs) != INTERRUPT_PROGRAM) {
- CT_WARN_ON(ct_state() != CONTEXT_KERNEL);
+ CT_WARN_ON(ct_state() != CONTEXT_KERNEL &&
+ ct_state() != CONTEXT_IDLE);
if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
BUG_ON(is_implicit_soft_masked(regs));
}
