LKML Archive on lore.kernel.org
 help / color / Atom feed
From: Oliver Neukum <oneukum@suse.de>
To: Qais Yousef <qais.yousef@arm.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: lockdep warning in urb.c:363 usb_submit_urb
Date: Tue, 24 Mar 2020 10:08:38 +0100
Message-ID: <1585040918.7151.6.camel@suse.de> (raw)
In-Reply-To: <20200323172932.5s7txy2juhut5qdv@e107158-lin.cambridge.arm.com>

Am Montag, den 23.03.2020, 17:29 +0000 schrieb Qais Yousef:
> Hi Oliver

Hi,

> First time I use dynamic debugging, hopefully I've done correctly.

I am afraid not.

> 	echo "file drivers/usb/* +p" > /sys/kernel/debug/dynamic_debug/control

Overkill but correct. +mpf would be even better

> 	$REPRODUCE

Good

> 	cat /sys/kernel/debug/dynamic_debug/control | grep usb > usb.debug

No.

/sys/kernel/debug/dynamic_debug/control holds the collection of the
messages that may be triggered, but it does not tell you which messages
are triggered and in which order. The triggered messages end up
in syslog. So you would use 'dmesg'
I am afraid you redid the test correctly and then threw away the
result.
Could you redo it and just attach the output of dmesg?

	Sorry
		Oliver


  reply index

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-23 14:38 Qais Yousef
2020-03-23 15:36 ` Oliver Neukum
2020-03-23 15:54   ` Alan Stern
2020-03-23 16:02     ` Qais Yousef
2020-03-23 16:18     ` Oliver Neukum
2020-03-23 15:57   ` Qais Yousef
2020-03-23 16:20     ` Oliver Neukum
2020-03-23 17:29   ` Qais Yousef
2020-03-24  9:08     ` Oliver Neukum [this message]
2020-03-24 10:46       ` Qais Yousef
2020-03-24 13:20         ` Oliver Neukum
2020-03-24 13:43           ` Qais Yousef
2020-03-24 13:52             ` Alan Stern
2020-03-24 14:06               ` Qais Yousef
2020-03-24 15:56                 ` Alan Stern
2020-03-24 17:22                   ` Qais Yousef
2020-03-24 19:22                     ` Alan Stern
2020-03-25 15:00                       ` Qais Yousef
2020-03-25 20:49                         ` Alan Stern
2020-03-25 21:28                           ` Rafael J. Wysocki
2020-03-26 12:27                             ` Qais Yousef
2020-03-27 20:45                               ` Alan Stern
2020-03-28 14:15                                 ` Rafael J. Wysocki
2020-03-28 19:58                                   ` Alan Stern
2020-03-29  9:16                                     ` Rafael J. Wysocki
2020-03-29 13:56                                       ` Rafael J. Wysocki
2020-03-29 16:27                                       ` Alan Stern
2020-04-03 15:04                                         ` Rafael J. Wysocki
2020-04-03 16:13                                           ` Rafael J. Wysocki
2020-04-03 16:41                                           ` Alan Stern
2020-04-03 18:32                                             ` Rafael J. Wysocki
2020-04-03 20:15                                               ` Alan Stern
2020-04-06 16:45                                                 ` Rafael J. Wysocki
2020-04-06 20:25                                                   ` Alan Stern
2020-04-09 18:45                                                     ` Rafael J. Wysocki
2020-04-11  2:41                                                       ` Alan Stern
2020-04-13 21:32                                                         ` Rafael J. Wysocki
2020-04-14 13:43                                                           ` Rafael J. Wysocki
2020-04-14 17:47                                                             ` Alan Stern
2020-04-15 22:20                                                               ` Rafael J. Wysocki
2020-04-16 15:18                                                                 ` Alan Stern
2020-04-17  9:57                                                                   ` Rafael J. Wysocki
2020-04-17 16:10                                                                     ` Alan Stern
2020-04-17 21:54                                                                       ` Rafael J. Wysocki
2020-04-17 23:37                                                                         ` Alan Stern
2020-04-18  9:40                                                                           ` Rafael J. Wysocki
2020-04-03 17:08                                         ` Rafael J. Wysocki
2020-04-20 20:26                           ` Alan Stern
2020-04-21 11:15                             ` Qais Yousef
2020-03-24 13:47         ` Alan Stern

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=1585040918.7151.6.camel@suse.de \
    --to=oneukum@suse.de \
    --cc=gregkh@linuxfoundation.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-usb@vger.kernel.org \
    --cc=qais.yousef@arm.com \
    /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

LKML Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/lkml/0 lkml/git/0.git
	git clone --mirror https://lore.kernel.org/lkml/1 lkml/git/1.git
	git clone --mirror https://lore.kernel.org/lkml/2 lkml/git/2.git
	git clone --mirror https://lore.kernel.org/lkml/3 lkml/git/3.git
	git clone --mirror https://lore.kernel.org/lkml/4 lkml/git/4.git
	git clone --mirror https://lore.kernel.org/lkml/5 lkml/git/5.git
	git clone --mirror https://lore.kernel.org/lkml/6 lkml/git/6.git
	git clone --mirror https://lore.kernel.org/lkml/7 lkml/git/7.git
	git clone --mirror https://lore.kernel.org/lkml/8 lkml/git/8.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 lkml lkml/ https://lore.kernel.org/lkml \
		linux-kernel@vger.kernel.org
	public-inbox-index lkml

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-kernel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git