From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Paul Mackerras <paulus@samba.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc/uaccess: Fix __get_user() with CONFIG_CC_HAS_ASM_GOTO_OUTPUT
Date: Sun, 16 May 2021 08:43:53 +1000 [thread overview]
Message-ID: <162111863389.1890426.7179342188504537886.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <cf0a050d124d4f426cdc7a74009d17b01d8d8969.1620465917.git.christophe.leroy@csgroup.eu>
On Sat, 8 May 2021 09:25:32 +0000 (UTC), Christophe Leroy wrote:
> Building kernel mainline with GCC 11 leads to following failure
> when starting 'init':
>
> init[1]: bad frame in sys_sigreturn: 7ff5a900 nip 001083cc lr 001083c4
> Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
>
> This is an issue due to a segfault happening in
> __unsafe_restore_general_regs() in a loop copying registers from user
> to kernel:
>
> [...]
Applied to powerpc/fixes.
[1/1] powerpc/uaccess: Fix __get_user() with CONFIG_CC_HAS_ASM_GOTO_OUTPUT
https://git.kernel.org/powerpc/c/7315e457d6bc342d06ba0b7ee498221c5237a547
cheers
WARNING: multiple messages have this Message-ID (diff)
From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Paul Mackerras <paulus@samba.org>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] powerpc/uaccess: Fix __get_user() with CONFIG_CC_HAS_ASM_GOTO_OUTPUT
Date: Sun, 16 May 2021 08:43:53 +1000 [thread overview]
Message-ID: <162111863389.1890426.7179342188504537886.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <cf0a050d124d4f426cdc7a74009d17b01d8d8969.1620465917.git.christophe.leroy@csgroup.eu>
On Sat, 8 May 2021 09:25:32 +0000 (UTC), Christophe Leroy wrote:
> Building kernel mainline with GCC 11 leads to following failure
> when starting 'init':
>
> init[1]: bad frame in sys_sigreturn: 7ff5a900 nip 001083cc lr 001083c4
> Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
>
> This is an issue due to a segfault happening in
> __unsafe_restore_general_regs() in a loop copying registers from user
> to kernel:
>
> [...]
Applied to powerpc/fixes.
[1/1] powerpc/uaccess: Fix __get_user() with CONFIG_CC_HAS_ASM_GOTO_OUTPUT
https://git.kernel.org/powerpc/c/7315e457d6bc342d06ba0b7ee498221c5237a547
cheers
next prev parent reply other threads:[~2021-05-15 22:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-08 9:25 [PATCH] powerpc/uaccess: Fix __get_user() with CONFIG_CC_HAS_ASM_GOTO_OUTPUT Christophe Leroy
2021-05-08 9:25 ` Christophe Leroy
2021-05-15 22:43 ` Michael Ellerman [this message]
2021-05-15 22:43 ` Michael Ellerman
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