Patch "MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch" has been added to the 4.10-stable tree
Subsystems (2)
This is a note to let you know that I've just added the patch titled
MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch
to the 4.10-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:
mips-irq-stack-fix-erroneous-jal-to-plat_irq_dispatch.patch
and it can be found in the queue-4.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
c25f8064c1d5731a2ce5664def890140dcdd3e5cMon Sep 17 00:00:00 2001
From: Matt Redfearn <[email protected]>
Date: Wed, 25 Jan 2017 17:00:25 +0000
Subject: MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch
From: Matt Redfearn <[email protected]>
commit c25f8064c1d5731a2ce5664def890140dcdd3e5c upstream.
Commit dda45f701c9d ("MIPS: Switch to the irq_stack in interrupts") changed both the normal and vectored interrupt handlers. Unfortunately the vectored version, "except_vec_vi_handler", was incorrectly modified to unconditionally jal to plat_irq_dispatch, rather than doing a jalr to the vectored handler that has been set up. This is ok for many platforms which set the vectored handler to plat_irq_dispatch anyway, but will cause problems with platforms that use other handlers.
Patchwork: https://patchwork.linux-mips.org/patch/15110/
--- arch/mips/kernel/genex.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
arch/mips/kernel/genex.S +1 -1
@@ -329,7 +329,7 @@ NESTED(except_vec_vi_handler, 0, sp) PTR_ADD sp, t0, t1 2: - jal plat_irq_dispatch + jalr v0 /* Restore sp */ move sp, s1
Patches currently in stable-queue which might be from [email protected] are
queue-4.10/mips-switch-to-the-irq_stack-in-interrupts.patch queue-4.10/mips-select-have_irq_exit_on_irq_stack.patch queue-4.10/mips-only-change-28-to-thread_info-if-coming-from-user-mode.patch queue-4.10/mips-stack-unwinding-while-on-irq-stack.patch queue-4.10/mips-irq-stack-fix-erroneous-jal-to-plat_irq_dispatch.patch queue-4.10/mips-introduce-irq_stack.patch