From 94a1b192290c9fdb33085ecacf82afb27bd63fa8 Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Mon, 22 Jan 2024 23:15:48 +0100 Subject: parisc: Show kernel unaligned memory accesses Warn if some kernel function triggers unaligned memory accesses. Signed-off-by: Helge Deller --- arch/parisc/kernel/unaligned.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch/parisc') diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c index c520e551a165..95a2741f26f3 100644 --- a/arch/parisc/kernel/unaligned.c +++ b/arch/parisc/kernel/unaligned.c @@ -399,6 +399,13 @@ void handle_unaligned(struct pt_regs *regs) if (!unaligned_enabled) goto force_sigbus; + } else { + static DEFINE_RATELIMIT_STATE(kernel_ratelimit, 5 * HZ, 5); + if (!(current->thread.flags & PARISC_UAC_NOPRINT) && + __ratelimit(&kernel_ratelimit)) + pr_warn("Kernel: unaligned access to " RFMT " in %pS " + "(iir " RFMT ")\n", + regs->ior, (void *)regs->iaoq[0], regs->iir); } /* handle modification - OK, it's ugly, see the instruction manual */ -- cgit v1.2.3