e8991d1d64
KASAN caught a buffer overflow with the hardcoded 2048 byte buffer size, when 2080 bytes are written to it: BUG: KASAN: slab-out-of-bounds in snd_pcm_format_set_silence+0x3bc/0x3e4 Write of size 8 at addr ffff0000c8149800 by task kunit_try_catch/1297 CPU: 0 PID: 1297 Comm: kunit_try_catch Tainted: G N 6.8.0-rc4-next-20240216 #1 Hardware name: linux,dummy-virt (DT) Call trace: kasan_report+0x78/0xc0 __asan_report_store_n_noabort+0x1c/0x28 snd_pcm_format_set_silence+0x3bc/0x3e4 _test_fill_silence+0xdc/0x298 test_format_fill_silence+0x110/0x228 kunit_try_run_case+0x144/0x3bc kunit_generic_run_threadfn_adapter+0x50/0x94 kthread+0x330/0x3e8 ret_from_fork+0x10/0x20 Allocated by task 1297: __kmalloc+0x17c/0x2f0 kunit_kmalloc_array+0x2c/0x78 test_format_fill_silence+0xcc/0x228 kunit_try_run_case+0x144/0x3bc kunit_generic_run_threadfn_adapter+0x50/0x94 kthread+0x330/0x3e8 ret_from_fork+0x10/0x20 Replace the incorrect size with the correct length of 260 64-bit samples. Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Suggested-by: Ivan Orlov <ivan.orlov0322@gmail.com> Fixes: 3e39acf56ede ("ALSA: core: Add sound core KUnit test") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Acked-by: Ivan Orlov <ivan.orlov0322@gmail.com> Link: https://lore.kernel.org/r/20240217104311.3749655-1-arnd@kernel.org Signed-off-by: Takashi Iwai <tiwai@suse.de>
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.