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| Filename | Latest commit message | Latest commit date |
|---|---|---|
fddd3f73ad
[ Upstream commit 6fb8852b1298200da39bd85788bc5755d1d56f32 ]
When netdevsim dev is being created, a debugfs directory is created.
The variable "dev_ddir_name" is 16bytes device name pointer and device
name is "netdevsim<dev id>".
The maximum dev id length is 10.
So, 16bytes for device name isn't enough.
Test commands:
modprobe netdevsim
echo "1000000000 0" > /sys/bus/netdevsim/new_device
Splat looks like:
[ 249.622710][ T900] BUG: KASAN: stack-out-of-bounds in number+0x824/0x880
[ 249.623658][ T900] Write of size 1 at addr ffff88804c527988 by task bash/900
[ 249.624521][ T900]
[ 249.624830][ T900] CPU: 1 PID: 900 Comm: bash Not tainted 5.5.0+ #322
[ 249.625691][ T900] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 249.626712][ T900] Call Trace:
[ 249.627103][ T900] dump_stack+0x96/0xdb
[ 249.627639][ T900] ? number+0x824/0x880
[ 249.628173][ T900] print_address_description.constprop.5+0x1be/0x360
[ 249.629022][ T900] ? number+0x824/0x880
[ 249.629569][ T900] ? number+0x824/0x880
[ 249.630105][ T900] __kasan_report+0x12a/0x170
[ 249.630717][ T900] ? number+0x824/0x880
[ 249.631201][ T900] kasan_report+0xe/0x20
[ 249.631723][ T900] number+0x824/0x880
[ 249.632235][ T900] ? put_dec+0xa0/0xa0
[ 249.632716][ T900] ? rcu_read_lock_sched_held+0x90/0xc0
[ 249.633392][ T900] vsnprintf+0x63c/0x10b0
[ 249.633983][ T900] ? pointer+0x5b0/0x5b0
[ 249.634543][ T900] ? mark_lock+0x11d/0xc40
[ 249.635200][ T900] sprintf+0x9b/0xd0
[ 249.635750][ T900] ? scnprintf+0xe0/0xe0
[ 249.636370][ T900] nsim_dev_probe+0x63c/0xbf0 [netdevsim]
[ ... ]
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Fixes:
|
||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.