diff options
| author | Jiafei Pan <[email protected]> | 2020-08-14 12:55:22 +0800 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2020-09-16 15:18:56 +0200 |
| commit | cdabce2e3dff7e4bcef73473987618569d178af3 (patch) | |
| tree | ccf9b3a026fbba07c5b0f29b077df5acb363514d | |
| parent | 856deb866d16e29bd65952e0289066f6078af773 (diff) | |
softirq: Add debug check to __raise_softirq_irqoff()
__raise_softirq_irqoff() must be called with interrupts disabled to protect
the per CPU softirq pending state update against an interrupt and soft
interrupt handling on return from interrupt.
Add a lockdep assertion to validate the calling convention.
[ tglx: Massaged changelog ]
Signed-off-by: Jiafei Pan <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
| -rw-r--r-- | kernel/softirq.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c index bf88d7f62433..09229ad82209 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -481,6 +481,7 @@ void raise_softirq(unsigned int nr) void __raise_softirq_irqoff(unsigned int nr) { + lockdep_assert_irqs_disabled(); trace_softirq_raise(nr); or_softirq_pending(1UL << nr); } |