Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e871c6bb authored by Anton Blanchard's avatar Anton Blanchard Committed by Benjamin Herrenschmidt
Browse files

powerpc: Reset MSR_LE on signal entry 



We always take signals in big endian which is wrong. Signals
should be taken in native endian.

Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent ef1967ff

arch/powerpc/kernel/signal_32.c

+2 −1
Original line number Diff line number Diff line
@@ -1045,8 +1045,9 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka, 
	regs->gpr[5] = (unsigned long) &rt_sf->uc;

	regs->gpr[6] = (unsigned long) rt_sf;

	regs->nip = (unsigned long) ka->sa.sa_handler;

	/* enter the signal handler in big-endian mode */

	/* enter the signal handler in native-endian mode */

	regs->msr &= ~MSR_LE;

	regs->msr |= (MSR_KERNEL & MSR_LE);

#ifdef CONFIG_PPC_TRANSACTIONAL_MEM

	/* Remove TM bits from thread's MSR.  The MSR in the sigcontext

	 * just indicates to userland that we were doing a transaction, but we

arch/powerpc/kernel/signal_64.c

+2 −1
Original line number Diff line number Diff line
@@ -773,8 +773,9 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, 


	/* Set up "regs" so we "return" to the signal handler. */

	err |= get_user(regs->nip, &funct_desc_ptr->entry);

	/* enter the signal handler in big-endian mode */

	/* enter the signal handler in native-endian mode */

	regs->msr &= ~MSR_LE;

	regs->msr |= (MSR_KERNEL & MSR_LE);

	regs->gpr[1] = newsp;

	err |= get_user(regs->gpr[2], &funct_desc_ptr->toc);

	regs->gpr[3] = signr;