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From: Ingo Molnar <mingo@kernel.org>
To: Masami Hiramatsu <mhiramat@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
	Ingo Molnar <mingo@redhat.com>, "H . Peter Anvin" <hpa@zytor.com>,
	x86@kernel.org, Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
	Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>,
	"David S . Miller" <davem@davemloft.net>,
	Jon Medhurst <tixy@linaro.org>, Will Deacon <will.deacon@arm.com>,
	Arnd Bergmann <arnd@arndb.de>,
	David Howells <dhowells@redhat.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	"Tobin C . Harding" <me@tobin.cc>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Thomas Richter <tmricht@linux.ibm.com>,
	akpm@linux-foundation.org, acme@kernel.org, rostedt@goodmis.org,
	brueckner@linux.vnet.ibm.com, schwidefsky@de.ibm.com,
	stable@vger.kernel.org
Subject: Re: [PATCH v3 5/7] kprobes/x86: Fix %p uses in error messages
Date: Fri, 27 Apr 2018 08:58:17 +0200	[thread overview]
Message-ID: <20180427065817.tedhin5sy7brgq7m@gmail.com> (raw)
In-Reply-To: <152481133105.22588.10668983189195179761.stgit@devbox>


* Masami Hiramatsu <mhiramat@kernel.org> wrote:

>  	    (addr < (u8 *) jprobe_return_end)) {
>  		if (stack_addr(regs) != saved_sp) {
>  			struct pt_regs *saved_regs = &kcb->jprobe_saved_regs;
> -			printk(KERN_ERR
> -			       "current sp %p does not match saved sp %p\n",
> +			pr_err("current sp %pS does not match saved sp %pS\n",
>  			       stack_addr(regs), saved_sp);

Why does this use %pS? Stack pointers are typically pointing into general kernel 
RAM, which is totally pointless to display 'symbolically'.

Thanks,

	Ingo

  reply	other threads:[~2018-04-27  6:58 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-27  6:39 [PATCH v3 0/7] kprobes: Fix %p in kprobes Masami Hiramatsu
2018-04-27  6:40 ` [PATCH v3 1/7] kprobes: Make blacklist root user read only Masami Hiramatsu
2018-04-27  6:56   ` Greg KH
2018-04-27 14:52     ` Masami Hiramatsu
2018-04-27  7:04   ` Ingo Molnar
2018-04-27 15:58     ` Masami Hiramatsu
2018-04-27  6:40 ` [PATCH v3 2/7] kprobes: Show blacklist addresses as same as kallsyms does Masami Hiramatsu
2018-04-27  7:14   ` Ingo Molnar
2018-04-27 16:10     ` Masami Hiramatsu
2018-04-27  6:41 ` [PATCH v3 3/7] kprobes: Show address of kprobes if " Masami Hiramatsu
2018-04-27  6:41 ` [PATCH v3 4/7] kprobes: Replace %p with other pointer types Masami Hiramatsu
2018-04-27  6:56   ` Ingo Molnar
2018-04-27 15:42     ` Masami Hiramatsu
2018-04-28  4:43       ` Masami Hiramatsu
2018-04-27  6:42 ` [PATCH v3 5/7] kprobes/x86: Fix %p uses in error messages Masami Hiramatsu
2018-04-27  6:58   ` Ingo Molnar [this message]
2018-04-27 15:06     ` Masami Hiramatsu
2018-04-27  6:42 ` [PATCH v3 6/7] kprobes/arm: " Masami Hiramatsu
2018-04-27  6:43 ` [PATCH v3 7/7] kprobes/arm64: " Masami Hiramatsu

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