From: Joe Perches <joe@perches.com>
To: Christophe Leroy <christophe.leroy@csgroup.eu>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v2 11/25] powerpc/signal: Refactor bad frame logging
Date: Tue, 18 Aug 2020 18:19:54 -0700 [thread overview]
Message-ID: <3ca05f10dec479a70f6c33274ded8d4fab9c01ec.camel@perches.com> (raw)
In-Reply-To: <fa094445c119fc00315e1c13783b493346306c6a.1597770847.git.christophe.leroy@csgroup.eu>
On Tue, 2020-08-18 at 17:19 +0000, Christophe Leroy wrote:
> The logging of bad frame appears half a dozen of times
> and is pretty similar.
[]
> diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c
[]
> @@ -355,3 +355,14 @@ static unsigned long get_tm_stackpointer(struct task_struct *tsk)
> #endif
> return ret;
> }
> +
> +static const char fm32[] = KERN_INFO "%s[%d]: bad frame in %s: %p nip %08lx lr %08lx\n";
> +static const char fm64[] = KERN_INFO "%s[%d]: bad frame in %s: %p nip %016lx lr %016lx\n";
Why not remove this and use it in place with
%08lx/%016x used as %px with a case to (void *)?
> +void signal_fault(struct task_struct *tsk, struct pt_regs *regs,
> + const char *where, void __user *ptr)
> +{
> + if (show_unhandled_signals)
> + printk_ratelimited(regs->msr & MSR_64BIT ? fm64 : fm32, tsk->comm,
> + task_pid_nr(tsk), where, ptr, regs->nip, regs->link);
pr_info_ratelimited("%s[%d]: bad frame in %s: %p nip %016lx lr %016lx\n",
tsk->comm, task_pid_nr(tsk), where, ptr,
(void *)regs->nip, (void *)regs->link);
next prev parent reply other threads:[~2020-08-19 1:20 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-18 17:19 [PATCH v2 00/25] powerpc: Switch signal 32 to using unsafe_put_user() and friends Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 01/25] powerpc/signal: Move inline functions in signal.h Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 02/25] powerpc/ptrace: Move declaration of ptrace_get_reg() and ptrace_set_reg() Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 03/25] powerpc/ptrace: Consolidate reg index calculation Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 04/25] powerpc/ptrace: Create ptrace_get_fpr() and ptrace_put_fpr() Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 05/25] powerpc/signal: Don't manage floating point regs when no FPU Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 06/25] powerpc/32s: Allow deselecting CONFIG_PPC_FPU on mpc832x Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 07/25] powerpc/signal: Remove BUG_ON() in handler_signal functions Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 08/25] powerpc/signal: Move access_ok() out of get_sigframe() Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 09/25] powerpc/signal: Remove get_clean_sp() Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 10/25] powerpc/signal: Call get_tm_stackpointer() from get_sigframe() Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 11/25] powerpc/signal: Refactor bad frame logging Christophe Leroy
2020-08-19 1:19 ` Joe Perches [this message]
2020-08-18 17:19 ` [PATCH v2 12/25] powerpc/signal32: Simplify logging in handle_rt_signal32() Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 13/25] powerpc/signal32: Move handle_signal32() close to handle_rt_signal32() Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 14/25] powerpc/signal32: Rename local pointers in handle_rt_signal32() Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 15/25] powerpc/signal32: Misc changes to make handle_[rt_]_signal32() more similar Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 16/25] powerpc/signal32: Move signal trampoline setup to handle_[rt_]signal32 Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 17/25] powerpc/signal32: Switch handle_signal32() to user_access_begin() logic Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 18/25] powerpc/signal32: Switch handle_rt_signal32() " Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 19/25] powerpc/signal32: Remove ifdefery in middle of if/else Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 20/25] signal: Add unsafe_put_compat_sigset() Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 21/25] powerpc/signal32: Add and use unsafe_put_sigset_t() Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 22/25] powerpc/signal32: Switch swap_context() to user_access_begin() logic Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 23/25] powerpc/signal: Create 'unsafe' versions of copy_[ck][fpr/vsx]_to_user() Christophe Leroy
2020-09-29 2:04 ` Christopher M. Riedl
2020-09-29 5:22 ` Christophe Leroy
2020-09-29 5:33 ` Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 24/25] powerpc/signal32: Isolate non-copy actions in save_user_regs() and save_tm_user_regs() Christophe Leroy
2020-08-18 17:19 ` [PATCH v2 25/25] powerpc/signal32: Transform save_user_regs() and save_tm_user_regs() in 'unsafe' version Christophe Leroy
2020-09-29 2:55 ` Christopher M. Riedl
2020-09-29 5:21 ` Christophe Leroy
2020-12-10 11:29 ` [PATCH v2 00/25] powerpc: Switch signal 32 to using unsafe_put_user() and friends Michael Ellerman
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=3ca05f10dec479a70f6c33274ded8d4fab9c01ec.camel@perches.com \
--to=joe@perches.com \
--cc=benh@kernel.crashing.org \
--cc=christophe.leroy@csgroup.eu \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mpe@ellerman.id.au \
--cc=paulus@samba.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: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome