This is a note to let you know that I've just added the patch titled
parisc: Use irq_enter_rcu() to fix warning at kernel/context_tracking.c:367
to the 5.10-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:
parisc-use-irq_enter_rcu-to-fix-warning-at-kernel-co.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ac102ba81abf790692598255021dbf926f0b5bdc
Author: Helge Deller <deller@xxxxxx>
Date: Tue Nov 28 23:16:00 2023 +0100
parisc: Use irq_enter_rcu() to fix warning at kernel/context_tracking.c:367
[ Upstream commit 73cb4a2d8d7e0259f94046116727084f21e4599f ]
Use irq*_rcu() functions to fix this kernel warning:
WARNING: CPU: 0 PID: 0 at kernel/context_tracking.c:367 ct_irq_enter+0xa0/0xd0
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.7.0-rc3-64bit+ #1037
Hardware name: 9000/785/C3700
IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000412cd758 00000000412cd75c
IIR: 03ffe01f ISR: 0000000000000000 IOR: 0000000043c20c20
CPU: 0 CR30: 0000000041caa000 CR31: 0000000000000000
ORIG_R28: 0000000000000005
IAOQ[0]: ct_irq_enter+0xa0/0xd0
IAOQ[1]: ct_irq_enter+0xa4/0xd0
RP(r2): irq_enter+0x34/0x68
Backtrace:
[<000000004034a3ec>] irq_enter+0x34/0x68
[<000000004030dc48>] do_cpu_irq_mask+0xc0/0x450
[<0000000040303070>] intr_return+0x0/0xc
Signed-off-by: Helge Deller <deller@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index 2762e8540672e..5e3b9be45de92 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -520,7 +520,7 @@ void do_cpu_irq_mask(struct pt_regs *regs)
old_regs = set_irq_regs(regs);
local_irq_disable();
- irq_enter();
+ irq_enter_rcu();
eirr_val = mfctl(23) & cpu_eiem & per_cpu(local_ack_eiem, cpu);
if (!eirr_val)
@@ -555,7 +555,7 @@ void do_cpu_irq_mask(struct pt_regs *regs)
#endif /* CONFIG_IRQSTACKS */
out:
- irq_exit();
+ irq_exit_rcu();
set_irq_regs(old_regs);
return;
