On Mon, Jun 15, 2026 at 10:51:43AM +0530, Shrikanth Hegde wrote: > Hi Mukesh. > > On 6/13/26 6:08 PM, Mukesh Kumar Chaurasiya (IBM) wrote: > > During syscall restart, we block the kuap as we need to replay > > interrupts. Which are not restored when we exit to the user, hence we > > get a fault which ends up with `bad_access_pkey` and hence crashing the > > kernel. > > > > We have already stored the kuap values during the entry, just restore > > them when we exit. > > > > Applies on linux-next (next-20260610). > > > > Please re-write the changelog in imperative mood. > i.e Avoid we/you/I. > > https://www.kernel.org/doc/html/v4.17/process/submitting-patches.html#describe-your-changes > > > > Fixes: bee25f97ad24 ("powerpc: Enable GENERIC_ENTRY feature") > > Reported-by: Sayali Patil <[email protected]> > > Signed-off-by: Mukesh Kumar Chaurasiya (IBM) <[email protected]> > > --- > > arch/powerpc/kernel/interrupt.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/arch/powerpc/kernel/interrupt.c > > b/arch/powerpc/kernel/interrupt.c > > index 89a999be1352..159901d6ba8c 100644 > > --- a/arch/powerpc/kernel/interrupt.c > > +++ b/arch/powerpc/kernel/interrupt.c > > @@ -165,7 +165,7 @@ notrace unsigned long syscall_exit_restart(unsigned > > long r3, struct pt_regs *reg > > local_irq_disable(); > > goto again; > > } > > - > > + kuap_user_restore(regs); > > Please describe where was kuap save was done in the stack. > > > regs->exit_result |= regs->exit_flags; > > return regs->exit_result; > Sent out V2 with the requested changes.
Regards, Mukesh
