lkml.org 
[lkml]   [2023]   [Aug]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [syzbot] [usb?] KASAN: slab-use-after-free Write in usb_anchor_suspend_wakeups
From
On 12.08.23 17:56, Alan Stern wrote:
Hi,

> The real problem seems to be some sort of race in usbtmc and the core
> between URBs being added to an anchor, file I/O being stopped, and URBs
> being killed or scuttled when the file is flushed.

just to make sure, you think it is failing here:

usb_anchor_resume_wakeups(anchor);

because we cannot guarantee that the anchor pointer
is still valid, unless we refcount anchors, which would
make embedding them impossible?

Regards
Oliver

\
 
 \ /
  Last update: 2023-08-17 14:17    [W:0.063 / U:0.516 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site