From: Qiaowei Ren <qiaowei.ren@intel.com> To: "H. Peter Anvin" <hpa@zytor.com>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Dave Hansen <dave.hansen@intel.com> Cc: x86@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Qiaowei Ren <qiaowei.ren@intel.com> Subject: [PATCH v7 05/10] x86, mpx: extend siginfo structure to include bound violation information Date: Mon, 21 Jul 2014 13:38:39 +0800 [thread overview] Message-ID: <1405921124-4230-6-git-send-email-qiaowei.ren@intel.com> (raw) In-Reply-To: <1405921124-4230-1-git-send-email-qiaowei.ren@intel.com> This patch adds new fields about bound violation into siginfo structure. si_lower and si_upper are respectively lower bound and upper bound when bound violation is caused. Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com> --- include/uapi/asm-generic/siginfo.h | 9 ++++++++- kernel/signal.c | 4 ++++ 2 files changed, 12 insertions(+), 1 deletions(-) diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h index ba5be7f..1e35520 100644 --- a/include/uapi/asm-generic/siginfo.h +++ b/include/uapi/asm-generic/siginfo.h @@ -91,6 +91,10 @@ typedef struct siginfo { int _trapno; /* TRAP # which caused the signal */ #endif short _addr_lsb; /* LSB of the reported address */ + struct { + void __user *_lower; + void __user *_upper; + } _addr_bnd; } _sigfault; /* SIGPOLL */ @@ -131,6 +135,8 @@ typedef struct siginfo { #define si_trapno _sifields._sigfault._trapno #endif #define si_addr_lsb _sifields._sigfault._addr_lsb +#define si_lower _sifields._sigfault._addr_bnd._lower +#define si_upper _sifields._sigfault._addr_bnd._upper #define si_band _sifields._sigpoll._band #define si_fd _sifields._sigpoll._fd #ifdef __ARCH_SIGSYS @@ -199,7 +205,8 @@ typedef struct siginfo { */ #define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */ #define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */ -#define NSIGSEGV 2 +#define SEGV_BNDERR (__SI_FAULT|3) /* failed address bound checks */ +#define NSIGSEGV 3 /* * SIGBUS si_codes diff --git a/kernel/signal.c b/kernel/signal.c index a4077e9..2131636 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2748,6 +2748,10 @@ int copy_siginfo_to_user(siginfo_t __user *to, const siginfo_t *from) if (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO) err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb); #endif +#ifdef SEGV_BNDERR + err |= __put_user(from->si_lower, &to->si_lower); + err |= __put_user(from->si_upper, &to->si_upper); +#endif break; case __SI_CHLD: err |= __put_user(from->si_pid, &to->si_pid); -- 1.7.1
WARNING: multiple messages have this Message-ID (diff)
From: Qiaowei Ren <qiaowei.ren@intel.com> To: "H. Peter Anvin" <hpa@zytor.com>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Dave Hansen <dave.hansen@intel.com> Cc: x86@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Qiaowei Ren <qiaowei.ren@intel.com> Subject: [PATCH v7 05/10] x86, mpx: extend siginfo structure to include bound violation information Date: Mon, 21 Jul 2014 13:38:39 +0800 [thread overview] Message-ID: <1405921124-4230-6-git-send-email-qiaowei.ren@intel.com> (raw) In-Reply-To: <1405921124-4230-1-git-send-email-qiaowei.ren@intel.com> This patch adds new fields about bound violation into siginfo structure. si_lower and si_upper are respectively lower bound and upper bound when bound violation is caused. Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com> --- include/uapi/asm-generic/siginfo.h | 9 ++++++++- kernel/signal.c | 4 ++++ 2 files changed, 12 insertions(+), 1 deletions(-) diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h index ba5be7f..1e35520 100644 --- a/include/uapi/asm-generic/siginfo.h +++ b/include/uapi/asm-generic/siginfo.h @@ -91,6 +91,10 @@ typedef struct siginfo { int _trapno; /* TRAP # which caused the signal */ #endif short _addr_lsb; /* LSB of the reported address */ + struct { + void __user *_lower; + void __user *_upper; + } _addr_bnd; } _sigfault; /* SIGPOLL */ @@ -131,6 +135,8 @@ typedef struct siginfo { #define si_trapno _sifields._sigfault._trapno #endif #define si_addr_lsb _sifields._sigfault._addr_lsb +#define si_lower _sifields._sigfault._addr_bnd._lower +#define si_upper _sifields._sigfault._addr_bnd._upper #define si_band _sifields._sigpoll._band #define si_fd _sifields._sigpoll._fd #ifdef __ARCH_SIGSYS @@ -199,7 +205,8 @@ typedef struct siginfo { */ #define SEGV_MAPERR (__SI_FAULT|1) /* address not mapped to object */ #define SEGV_ACCERR (__SI_FAULT|2) /* invalid permissions for mapped object */ -#define NSIGSEGV 2 +#define SEGV_BNDERR (__SI_FAULT|3) /* failed address bound checks */ +#define NSIGSEGV 3 /* * SIGBUS si_codes diff --git a/kernel/signal.c b/kernel/signal.c index a4077e9..2131636 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2748,6 +2748,10 @@ int copy_siginfo_to_user(siginfo_t __user *to, const siginfo_t *from) if (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO) err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb); #endif +#ifdef SEGV_BNDERR + err |= __put_user(from->si_lower, &to->si_lower); + err |= __put_user(from->si_upper, &to->si_upper); +#endif break; case __SI_CHLD: err |= __put_user(from->si_pid, &to->si_pid); -- 1.7.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2014-07-21 5:42 UTC|newest] Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-07-21 5:38 [PATCH v7 00/10] Intel MPX support Qiaowei Ren 2014-07-21 5:38 ` Qiaowei Ren 2014-07-21 5:38 ` [PATCH v7 01/10] x86, mpx: introduce VM_MPX to indicate that a VMA is MPX specific Qiaowei Ren 2014-07-21 5:38 ` Qiaowei Ren 2014-07-21 5:38 ` [PATCH v7 02/10] x86, mpx: add MPX specific mmap interface Qiaowei Ren 2014-07-21 5:38 ` Qiaowei Ren 2014-07-21 5:38 ` [PATCH v7 03/10] x86, mpx: add macro cpu_has_mpx Qiaowei Ren 2014-07-21 5:38 ` Qiaowei Ren 2014-07-22 16:18 ` Dave Hansen 2014-07-22 16:18 ` Dave Hansen 2014-07-23 2:35 ` Ren, Qiaowei 2014-07-23 2:35 ` Ren, Qiaowei 2014-07-23 16:02 ` Dave Hansen 2014-07-23 16:02 ` Dave Hansen 2014-07-24 0:56 ` Ren, Qiaowei 2014-07-24 0:56 ` Ren, Qiaowei 2014-07-24 4:46 ` Dave Hansen 2014-07-24 4:46 ` Dave Hansen 2014-07-24 5:23 ` Ren, Qiaowei 2014-07-24 5:23 ` Ren, Qiaowei 2014-07-21 5:38 ` [PATCH v7 04/10] x86, mpx: hook #BR exception handler to allocate bound tables Qiaowei Ren 2014-07-21 5:38 ` Qiaowei Ren 2014-07-21 5:38 ` Qiaowei Ren [this message] 2014-07-21 5:38 ` [PATCH v7 05/10] x86, mpx: extend siginfo structure to include bound violation information Qiaowei Ren 2014-07-22 0:42 ` Zhang, Tianfei 2014-07-22 0:42 ` Zhang, Tianfei 2014-07-21 5:38 ` [PATCH v7 06/10] mips: sync struct siginfo with general version Qiaowei Ren 2014-07-21 5:38 ` Qiaowei Ren 2014-07-21 5:38 ` [PATCH v7 07/10] x86, mpx: decode MPX instruction to get bound violation information Qiaowei Ren 2014-07-21 5:38 ` Qiaowei Ren 2014-07-21 6:07 ` Andi Kleen 2014-07-21 6:07 ` Andi Kleen 2014-07-21 6:11 ` Ren, Qiaowei 2014-07-21 6:11 ` Ren, Qiaowei 2014-07-21 5:38 ` [PATCH v7 08/10] x86, mpx: add prctl commands PR_MPX_REGISTER, PR_MPX_UNREGISTER Qiaowei Ren 2014-07-21 5:38 ` Qiaowei Ren 2014-07-21 6:09 ` Andi Kleen 2014-07-21 6:09 ` Andi Kleen 2014-10-13 17:41 ` Dave Hansen 2014-10-13 17:41 ` Dave Hansen 2014-10-14 1:44 ` Ren, Qiaowei 2014-10-14 1:44 ` Ren, Qiaowei 2014-07-23 16:20 ` Dave Hansen 2014-07-23 16:20 ` Dave Hansen 2014-07-21 5:38 ` [PATCH v7 09/10] x86, mpx: cleanup unused bound tables Qiaowei Ren 2014-07-21 5:38 ` Qiaowei Ren 2014-07-22 0:50 ` Zhang, Tianfei 2014-07-22 0:50 ` Zhang, Tianfei 2014-07-23 16:38 ` Dave Hansen 2014-07-23 16:38 ` Dave Hansen 2014-07-24 0:49 ` Ren, Qiaowei 2014-07-24 0:49 ` Ren, Qiaowei 2014-07-24 1:04 ` Dave Hansen 2014-07-24 1:04 ` Dave Hansen 2014-07-24 1:27 ` Ren, Qiaowei 2014-07-24 1:27 ` Ren, Qiaowei 2014-07-21 5:38 ` [PATCH v7 10/10] x86, mpx: add documentation on Intel MPX Qiaowei Ren 2014-07-21 5:38 ` Qiaowei Ren
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=1405921124-4230-6-git-send-email-qiaowei.ren@intel.com \ --to=qiaowei.ren@intel.com \ --cc=dave.hansen@intel.com \ --cc=hpa@zytor.com \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-mm@kvack.org \ --cc=mingo@redhat.com \ --cc=tglx@linutronix.de \ --cc=x86@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.