From: <zhe.he@windriver.com>
To: <tony.luck@intel.com>, <bp@alien8.de>, <tglx@linutronix.de>,
<mingo@redhat.com>, <hpa@zytor.com>, <x86@kernel.org>,
<linux-edac@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<zhe.he@windriver.com>
Subject: [PATCH] x86/mce: Add compat_ioctl assignment to make it compatible with 32-bit system
Date: Wed, 4 Mar 2020 14:39:07 +0800 [thread overview]
Message-ID: <1583303947-49858-1-git-send-email-zhe.he@windriver.com> (raw)
From: He Zhe <zhe.he@windriver.com>
32-bit user-space program would get errors like the following from ioctl
syscall due to missing compat_ioctl.
MCE_GET_RECORD_LEN: Inappropriate ioctl for device
compat_ptr_ioctl is provided as a generic implementation of .compat_ioctl
file operation to ioctl functions that either ignore the argument or pass
a pointer to a compatible data type.
Signed-off-by: He Zhe <zhe.he@windriver.com>
---
arch/x86/kernel/cpu/mce/dev-mcelog.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/cpu/mce/dev-mcelog.c b/arch/x86/kernel/cpu/mce/dev-mcelog.c
index 7c8958d..6c9b91b7 100644
--- a/arch/x86/kernel/cpu/mce/dev-mcelog.c
+++ b/arch/x86/kernel/cpu/mce/dev-mcelog.c
@@ -328,6 +328,7 @@ static const struct file_operations mce_chrdev_ops = {
.write = mce_chrdev_write,
.poll = mce_chrdev_poll,
.unlocked_ioctl = mce_chrdev_ioctl,
+ .compat_ioctl = compat_ptr_ioctl,
.llseek = no_llseek,
};
--
2.7.4
next reply other threads:[~2020-03-04 6:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-04 6:39 zhe.he [this message]
2020-04-16 8:40 ` [PATCH] x86/mce: Add compat_ioctl assignment to make it compatible with 32-bit system He Zhe
2020-04-27 18:19 ` Luck, Tony
2020-05-02 14:18 ` He Zhe
[not found] ` <59d52031-f4e8-e754-c8b6-ca1130bf0cf1@EyeKnowHow.de>
2021-03-16 17:55 ` EDAC list as Trojan Horse distribution ?? Hermann Ruckerbauer
2021-03-16 18:03 ` Borislav Petkov
[not found] ` <3a2cbcf1-388c-4524-907d-0592438320fc@email.android.com>
2021-03-16 19:51 ` Luck, Tony
2021-03-18 8:58 ` Enrico Weigelt, metux IT consult
2021-03-20 19:22 ` Trojan horses on various lists was " Pavel Machek
2020-05-04 8:24 ` [tip: ras/core] x86/mcelog: Add compat_ioctl for 32-bit mcelog support tip-bot2 for He Zhe
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