From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752643AbbJEJ6j (ORCPT ); Mon, 5 Oct 2015 05:58:39 -0400 Received: from mailout2.samsung.com ([203.254.224.25]:50059 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752106AbbJEJ6h (ORCPT ); Mon, 5 Oct 2015 05:58:37 -0400 X-AuditID: cbfee68d-f79ae6d00000149a-72-561249c1393a From: Manjeet Pawar To: arnd@arndb.de, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Cc: pankaj.m@samsung.com, Manjeet Pawar , Akhilesh Kumar , Rohit Thapliyal Subject: [PATCH] ARM64:Fix MINSIGSTKSZ and SIGSTKSZ Date: Mon, 05 Oct 2015 15:26:09 +0530 Message-id: <1444038969-14112-1-git-send-email-manjeet.p@samsung.com> X-Mailer: git-send-email 1.7.9.5 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrFLMWRmVeSWpSXmKPExsWyRsSkWvegp1CYwe6JVhab151ktvg76Ri7 xebvHWwWHbu+slhc3jWHzeJe61og8WYrk8XGe9kOHB6/f01i9OjbsorR4/MmuQDmKC6blNSc zLLUIn27BK6M9ZMWMhc85KnY/GwtSwPjG64uRg4OCQETie0X+boYOYFMMYkL99azdTFycQgJ rGCUmDitlwUiYSIxaUYjK4gtJDCLUaL1uw5E0U9GiUc9k9lAEmwC2hJ7frSxg9giAhkSj3b+ BrOZBaYzSizcGQqyTFjAWGJ9ryNImEVAVWJp/yImEJtXwFXi3MnHrBD3KEjMmWQDMl5C4Deb xM9PF9kh6gUkvk0+xAJRIyux6QAzxGmSEgdX3GCZwCi4gJFhFaNoakFyQXFSepGhXnFibnFp Xrpecn7uJkZgkJ7+96x3B+PtA9aHGAU4GJV4eCWSBMOEWBPLiitzDzGaAm2YyCwlmpwPjIW8 knhDYzMjC1MTU2Mjc0szJXFeRamfwUIC6YklqdmpqQWpRfFFpTmpxYcYmTg4pRoY78RsSxR+ nJr/Mjzx12aGyaE853f7P0wyvvTpqNBU7/OH/01sOGg75+ZDt73XA/y2XNt/3o7rYalQtfyF K91WvmvZlBc7btG7+UL+m4nSxXwT65rWmzKN3248n7HNQGjP/bo5M48plqxM2qDQqvrwrZ9Z 2vV3E0IeXirZ3rSkZsVDEZ+Ops8BCkosxRmJhlrMRcWJAI6ORvVNAgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupgkeLIzCtJLcpLzFFi42I5/e+xoO5BT6Ewg+bdRhab151ktvg76Ri7 xebvHWwWHbu+slhc3jWHzeJe61og8WYrk8XGe9kOHB6/f01i9OjbsorR4/MmuQDmqAZGm4zU xJTUIoXUvOT8lMy8dFsl7+B453hTMwNDXUNLC3MlhbzE3FRbJRefAF23zBygC5QUyhJzSoFC AYnFxUr6dpgmhIa46VrANEbo+oYEwfUYGaCBhDWMGesnLWQueMhTsfnZWpYGxjdcXYycHBIC JhKTZjSyQthiEhfurWcDsYUEZjFKtH7X6WLkArJ/Mko86pkMlmAT0JbY86ONHcQWEciQeLTz N5jNLDCdUWLhztAuRg4OYQFjifW9jiBhFgFViaX9i5hAbF4BV4lzJx+zgpRICChIzJlkM4GR ewEjwypGidSC5ILipPRcw7zUcr3ixNzi0rx0veT83E2M4Fh4JrWD8eAu90OMAhyMSjy8B+IF w4RYE8uKK3MPMUpwMCuJ8Fq6CoUJ8aYkVlalFuXHF5XmpBYfYjQF2j+RWUo0OR8Yp3kl8YbG JuamxqaWJhYmZpZK4rw3DjGECQmkJ5akZqemFqQWwfQxcXBKNTCazneb+Hv/mdSzce8u3Yx5 Ytm1NqV/5+T9e7myPQ4W7zLW/tOx7eDzObsLjut7LLFl+eMRaWxR1W/tO1Gi4HX4W89fxeWJ gp9SVlRJhi8//0zXq+2Qv7kYx++dmxry/+zQ5D57qGLKMi6rmc7LlcyKE9ZxvZu2a1/u4sX3 BHd6cC6bf/3D2X+9SizFGYmGWsxFxYkAPhaYFJsCAAA= DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org MINSIGSTKSZ and SIGSTKSZ for ARM64 are not correctly set in latest kernel. This patch fixes this issue. This issue is reported in LTP (testcase: sigaltstack02.c). Testcase failed when sigaltstack() called with stack size "MINSIGSTKSZ - 1" Since in Glibc-2.22, MINSIGSTKSZ is set to 5120 but in kernel it is set to 2048 so testcase gets failed. Testcase Output: sigaltstack02 1 TPASS : stgaltstack() fails, Invalid Flag value,errno:22 sigaltstack02 2 TFAIL : sigaltstack() returned 0, expected -1,errno:12 Reported Issue in Glibc Bugzilla: https://sourceware.org/bugzilla/show_bug.cgi?id=16850 Bugfix in Glibc-2.22: https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=blob;f=sysdeps/unix/ sysv/linux/aarch64/bits/sigstack.h;h=8f2fb76e3e81734ef8a9cf9ae40daf4705 f31c35;hb=b763f6ae859ecea70a5dacb8ad45c71d5f667e2e Signed-off-by: Akhilesh Kumar Signed-off-by: Manjeet Pawar Signed-off-by: Rohit Thapliyal --- include/uapi/asm-generic/signal.h | 9 +++++++-- 1 files changed, 7 insertions(+), 2 deletions(-) diff --git a/include/uapi/asm-generic/signal.h b/include/uapi/asm-generic/signal.h index 9df61f1..2ffbe38 100644 --- a/include/uapi/asm-generic/signal.h +++ b/include/uapi/asm-generic/signal.h @@ -80,8 +80,13 @@ * SA_RESTORER 0x04000000 */ -#define MINSIGSTKSZ 2048 -#define SIGSTKSZ 8192 +#ifdef CONFIG_ARM64 +#define MINSIGSTKSZ 5120 +#define SIGSTKSZ 16384 +#else +#define MINSIGSTKSZ 2048 +#define SIGSTKSZ 8192 +#endif #ifndef __ASSEMBLY__ typedef struct { -- 1.7.1