All of lore.kernel.org
 help / color / mirror / Atom feed
From: Bart Van Assche <bvanassche@acm.org>
To: Isaac Manjarres <isaacmanjarres@google.com>,
	Guenter Roeck <linux@roeck-us.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Ulf Hansson <ulf.hansson@linaro.org>,
	Tomeu Vizoso <tomeu.vizoso@collabora.com>,
	Russell King <rmk+kernel@arm.linux.org.uk>,
	Marek Szyprowski <m.szyprowski@samsung.com>,
	Saravana Kannan <saravanak@google.com>,
	stable@kernel.org, kernel-team@android.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] driver core: Fix bus_type.match() error handling
Date: Fri, 19 Aug 2022 13:01:29 -0700	[thread overview]
Message-ID: <baa1f65a-d983-0518-3979-7099679995f2@acm.org> (raw)
In-Reply-To: <Yv/MKymRC9O04Nqu@google.com>

On 8/19/22 10:45, Isaac Manjarres wrote:
> It seems that the patches mentioned in [1] are causing a hang during
> reboot for various ARM emulations when booting from USB. Can you please
> take a look? There's more information about what defconfig, rootfs, and
> qemu commandline to use at [2].

Unfortunately I can't reproduce this hang in an x86 VM with kernel 
v6.0-rc1 and a USB disk attached via virt-manager. The lsscsi -v output 
shows that a USB disk has been attached:

[9:0:0:0]    disk    QEMU     QEMU HARDDISK    2.5+  /dev/sdd
   dir: /sys/bus/scsi/devices/9:0:0:0 
[/sys/devices/pci0000:00/0000:00:07.0/usb2/2-2/2-2:1.0/host9/target9:0:0/9:0:0:0]

Rebooting that VM happens in the expected time and without triggering 
any kernel warnings.

Since the issue has been observed in qemu, how about sharing the sysrq-t 
output? I recommend to collect that output as follows:
* Send the serial console output to a file. This involves adding 
console=ttyS0,115200n8 to the kernel command line and using the proper 
qemu options to save the serial console output into a file.
* Reproduce the hang and send the sysrq-t key sequence to qemu, e.g. as 
follows: virsh send-key ${vm_name} KEY_LEFTALT KEY_SYSRQ KEY_T

Thanks,

Bart.

  reply	other threads:[~2022-08-19 20:01 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20220815211927eucas1p275ed3f63f1baf76b319a828c214c651f@eucas1p2.samsung.com>
2022-08-15 21:19 ` [PATCH v2] driver core: Fix bus_type.match() error handling Isaac J. Manjarres
2022-08-16  4:25   ` Guenter Roeck
2022-08-16  5:17     ` Isaac Manjarres
2022-08-16 11:13       ` Guenter Roeck
2022-08-16 17:13         ` Isaac Manjarres
2022-08-17  1:05           ` Guenter Roeck
2022-08-17  1:12             ` Isaac Manjarres
2022-08-18 22:59               ` Guenter Roeck
2022-08-19  0:38                 ` Isaac Manjarres
2022-08-19 11:28                   ` Guenter Roeck
2022-08-19 17:45                     ` Isaac Manjarres
2022-08-19 20:01                       ` Bart Van Assche [this message]
2022-08-19 20:55                         ` Guenter Roeck
2022-08-19 22:08                         ` Guenter Roeck
2022-08-20  0:07                           ` Bart Van Assche
2022-08-20 11:48                             ` Guenter Roeck
2022-08-21 21:39                               ` Bart Van Assche
2022-08-25  9:22   ` Marek Szyprowski

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=baa1f65a-d983-0518-3979-7099679995f2@acm.org \
    --to=bvanassche@acm.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=isaacmanjarres@google.com \
    --cc=kernel-team@android.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux@roeck-us.net \
    --cc=m.szyprowski@samsung.com \
    --cc=rafael@kernel.org \
    --cc=rmk+kernel@arm.linux.org.uk \
    --cc=saravanak@google.com \
    --cc=stable@kernel.org \
    --cc=tomeu.vizoso@collabora.com \
    --cc=ulf.hansson@linaro.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 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.