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| Filename | Latest commit message | Latest commit date |
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f90bf1ece4
syzboot reported that https://syzkaller.appspot.com/bug?extid=fd2bd7df88c606eea4ef There is not consitency parameter in cluste_id_get/put calling. In case of getting the id with result is failure, the wusbhc->cluster_id will not be updated and this can not be used for wusb_cluster_id_put(). Tested report https://groups.google.com/d/msg/syzkaller-bugs/0znZopp3-9k/oxOrhLkLEgAJ Reproduce and gdb got the details: 139 addr = wusb_cluster_id_get(); (gdb) n 140 if (addr == 0) (gdb) print addr $1 = 254 '\376' (gdb) n 142 result = __hwahc_set_cluster_id(hwahc, addr); (gdb) print result $2 = -71 (gdb) break wusb_cluster_id_put Breakpoint 3 at 0xffffffff836e3f20: file drivers/usb/wusbcore/wusbhc.c, line 384. (gdb) s Thread 2 hit Breakpoint 3, wusb_cluster_id_put (id=0 '\000') at drivers/usb/wusbcore/wusbhc.c:384 384 id = 0xff - id; (gdb) n 385 BUG_ON(id >= CLUSTER_IDS); (gdb) print id $3 = 255 '\377' Reported-by: syzbot+fd2bd7df88c606eea4ef@syzkaller.appspotmail.com Signed-off-by: Phong Tran <tranmanphong@gmail.com> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20190724020601.15257-1-tranmanphong@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.