Message ID | 22932.1367544974@ale.ozlabs.ibm.com (mailing list archive) |
---|---|
State | Accepted, archived |
Commit | c2fd22df89365df9451d5b91da3b7bfd48122ecd |
Headers | show |
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 3e4c4ed..88ac0ee 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -1230,6 +1230,7 @@ void flush_hash_page(unsigned long vpn, real_pte_t pte, int psize, int ssize, * unmapping it first, it may see the speculated version. */ if (local && cpu_has_feature(CPU_FTR_TM) && + current->thread.regs && MSR_TM_ACTIVE(current->thread.regs->msr)) { tm_enable(); tm_abort(TM_CAUSE_TLBI);
Make sure that current->thread.reg exists before we deference it in flush_hash_page. Signed-off-by: Michael Neuling <mikey@neuling.org> Reported-by: John J Miller <millerjo@us.ibm.com> Cc: <stable@vger.kernel.org>