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parisc: Show kernel unaligned memory accesses

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Warn if some kernel function triggers unaligned memory accesses.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller 2024-01-22 23:15:48 +01:00
parent 73cb4a2d8d
commit 94a1b19229
1 changed files with 7 additions and 0 deletions
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7
arch/parisc/kernel/unaligned.c
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@ -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 */