Re: [BISECTED] kexec regression on PowerBook G4
From: Aaro Koskinen <aaro.koskinen@iki.fi>
Date: 2019-05-23 17:28:54
Possibly related (same subject, not in this thread)
- 2019-05-22 · Re: [BISECTED] kexec regression on PowerBook G4 · LEROY Christophe <hidden>
- 2019-05-22 · Re: [BISECTED] kexec regression on PowerBook G4 · Aaro Koskinen <aaro.koskinen@iki.fi>
- 2019-05-22 · Re: [BISECTED] kexec regression on PowerBook G4 · Aaro Koskinen <aaro.koskinen@iki.fi>
- 2019-05-22 · Re: [BISECTED] kexec regression on PowerBook G4 · Christophe Leroy <hidden>
- 2019-05-22 · Re: [BISECTED] kexec regression on PowerBook G4 · Christophe Leroy <hidden>
Hi, On Thu, May 23, 2019 at 07:33:38AM +0200, Christophe Leroy wrote:
Ok, the Oops confirms that the error is due to executing the kexec control code which is located outside the kernel text area. My yesterday's proposed change doesn't work because on book3S/32, NX protection is based on setting segments to NX, and using IBATs for kernel text. Can you try the patch I sent out a few minutes ago ? (https://patchwork.ozlabs.org/patch/1103827/)
It now crashes with "BUG: Unable to handle kernel instruction fetch" and the faulting address is 0xef13a000. A.