powerpc: use kernel endianness in MSR in 32-bit signal handler
This mirrors the behavior in handle_rt_signal32, to obey kernel endianness rather than assume a 32-bit process is big-endian. Without this change, any 32-bit little-endian process will SIGILL immediately upon handling a signal. Signed-off-by: Joseph J Allen <eerykitty@gmail.com> Signed-off-by: Will Springer <skirmisher@protonmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/2058876.irdbgypaU6@sheen
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@ -929,8 +929,9 @@ int handle_signal32(struct ksignal *ksig, sigset_t *oldset,
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regs->gpr[3] = ksig->sig;
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regs->gpr[4] = (unsigned long) sc;
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regs->nip = (unsigned long)ksig->ka.sa.sa_handler;
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/* enter the signal handler in big-endian mode */
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/* enter the signal handler in native-endian mode */
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regs->msr &= ~MSR_LE;
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regs->msr |= (MSR_KERNEL & MSR_LE);
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return 0;
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failed:
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