LKML Archive on
help / color / mirror / Atom feed
From: Larry Finger <>
To: Greg Kroah-Hartman <>
Cc: LKML <>,
Subject: kernel BUG in new r8188eu
Date: Fri, 30 Jul 2021 14:59:44 -0500	[thread overview]
Message-ID: <> (raw)


When I unplug the USB device with the driver loaded, I get the following BUG and 
my laptop freezes:

kernel: BUG: unable to handle page fault for address: ffffeb0200043248
kernel: #PF: supervisor read access in kernel mode
kernel: #PF: error_code(0x0000) - not-present page

The traceback points to a kfree() call. I do not understand this BUG. Can you 
explain what happens?

I think I know how to avoid the BUG, but that might be at the expense of a 
memory leak.



             reply	other threads:[~2021-07-30 19:59 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-30 19:59 Larry Finger [this message]
2021-07-31  5:37 ` Greg Kroah-Hartman
2021-07-31 16:18   ` Larry Finger
2021-07-31 18:53     ` Fabio Aiuto
2021-07-31 21:54       ` Larry Finger
2021-08-01  6:31     ` Greg Kroah-Hartman
2021-08-01 20:15       ` Larry Finger
2021-08-02 10:36         ` Greg Kroah-Hartman
2021-08-02 11:45           ` Fabio M. De Francesco
2021-08-02 14:38             ` Greg Kroah-Hartman
2021-08-02 14:40             ` Larry Finger
2021-08-02 15:46               ` Greg Kroah-Hartman
2021-08-02 14:49           ` Larry Finger

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:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \
    --subject='Re: kernel BUG in new r8188eu' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).