From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/2] arm64: compat: Provide definition for COMPAT_SIGMINSTKSZ
Date: Wed, 25 Jul 2018 14:45:12 +0100 [thread overview]
Message-ID: <1532526312-26993-3-git-send-email-will.deacon@arm.com> (raw)
In-Reply-To: <1532526312-26993-1-git-send-email-will.deacon@arm.com>
arch/arm/ defines a SIGMINSTKSZ of 2k, so we should use the same value
for compat tasks.
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Oleg Nesterov <oleg@redhat.com>
Reported-by: Steve McIntyre <steve.mcintyre@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---
arch/arm64/include/asm/compat.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
index 1a037b94eba1..cee28a05ee98 100644
--- a/arch/arm64/include/asm/compat.h
+++ b/arch/arm64/include/asm/compat.h
@@ -159,6 +159,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
}
#define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current)))
+#define COMPAT_MINSIGSTKSZ 2048
static inline void __user *arch_compat_alloc_user_space(long len)
{
--
2.1.4
next prev parent reply other threads:[~2018-07-25 13:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-25 13:45 [PATCH 0/2] Don't use SIGMINSTKSZ when enforcing alternative signal stack size for compat tasks Will Deacon
2018-07-25 13:45 ` [PATCH 1/2] signal: Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack Will Deacon
2018-07-25 15:54 ` Dave Martin
2018-07-25 16:37 ` Will Deacon
2018-07-26 10:44 ` Dave Martin
2018-07-25 13:45 ` Will Deacon [this message]
2018-07-25 15:55 ` [PATCH 2/2] arm64: compat: Provide definition for COMPAT_SIGMINSTKSZ Dave Martin
2019-07-29 20:23 ` [PATCH 0/2] Don't use SIGMINSTKSZ when enforcing alternative signal stack size for compat tasks Aurelien Jarno
2019-07-30 9:27 ` Will Deacon
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