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From: Aaro Koskinen <aaro.koskinen@iki.fi>
To: Michael Ellerman <mpe@ellerman.id.au>,
	Christophe Leroy <christophe.leroy@c-s.fr>,
	linuxppc-dev@lists.ozlabs.org
Subject: [BISECTED] kexec regression on PowerBook G4
Date: Wed, 22 May 2019 01:18:59 +0300	[thread overview]
Message-ID: <20190521221859.GC3621@darkstar.musicnaut.iki.fi> (raw)

Hi,

I was trying to upgrade from v5.0 -> v5.1 on PowerBook G4, but when trying
to kexec a kernel the system gets stuck (no errors seen on the console).

Bisected to: 93c4a162b014 ("powerpc/6xx: Store PGDIR physical address
in a SPRG"). This commit doesn't revert cleanly anymore but I tested
that the one before works OK.

With current Linus HEAD (9c7db5004280), it gets a bit further but still
doesn't work: now I get an error on the console after kexec "Starting
new kernel! ... Bye!":

	kernel tried to execute exec-protected page (...) - exploit attempt?

A.

             reply	other threads:[~2019-05-21 22:26 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-21 22:18 Aaro Koskinen [this message]
2019-05-22  6:14 ` [BISECTED] kexec regression on PowerBook G4 Christophe Leroy
2019-05-22  7:44   ` Christophe Leroy
2019-05-22 20:13     ` Aaro Koskinen
2019-05-22 20:33       ` LEROY Christophe
     [not found]         ` <20190522211724.GC456@darkstar.musicnaut.iki.fi>
2019-05-23  5:24           ` [RFC PATCH] powerpc: fix kexec failure on book3s/32 Christophe Leroy
2019-05-23  5:33           ` [BISECTED] kexec regression on PowerBook G4 Christophe Leroy
2019-05-23 17:27             ` Aaro Koskinen
2019-05-23 18:58               ` Christophe Leroy
2019-05-23 22:23                 ` Aaro Koskinen
2019-05-24  5:46                   ` Christophe Leroy
2019-05-24  6:08                     ` Christophe Leroy
2019-05-24  7:36                       ` Aaro Koskinen
2019-05-24  7:40                         ` Christophe Leroy
2019-05-24 13:29                           ` Aaro Koskinen
2019-05-24 13:35                             ` Christophe Leroy
2019-05-24  6:05           ` [RFC PATCH v2] powerpc: fix kexec failure on book3s/32 Christophe Leroy
2019-05-24  6:05             ` Christophe Leroy
2019-05-24 13:38             ` Christophe Leroy
2019-05-22 20:07   ` [BISECTED] kexec regression on PowerBook G4 Aaro Koskinen

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