diff options
| author | Tamura Dai <kirinode0@gmail.com> | 2025-06-16 08:55:48 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-17 18:37:21 +0200 |
| commit | 68397fda2caa90e99a7c0bcb2cf604e42ef3b91f (patch) | |
| tree | 6a8055fcda1b4929cd5b8871a9ae6e1419d0cf9e | |
| parent | dd072fa6471510a97d2ff8330ae312451711a070 (diff) | |
ASoC: SOF: Intel: hda: Use devm_kstrdup() to avoid memleak.
[ Upstream commit 6c038b58a2dc5a008c7e7a1297f5aaa4deaaaa7e ]
sof_pdata->tplg_filename can have address allocated by kstrdup()
and can be overwritten. Memory leak was detected with kmemleak:
unreferenced object 0xffff88812391ff60 (size 16):
comm "kworker/4:1", pid 161, jiffies 4294802931
hex dump (first 16 bytes):
73 6f 66 2d 68 64 61 2d 67 65 6e 65 72 69 63 00 sof-hda-generic.
backtrace (crc 4bf1675c):
__kmalloc_node_track_caller_noprof+0x49c/0x6b0
kstrdup+0x46/0xc0
hda_machine_select.cold+0x1de/0x12cf [snd_sof_intel_hda_generic]
sof_init_environment+0x16f/0xb50 [snd_sof]
sof_probe_continue+0x45/0x7c0 [snd_sof]
sof_probe_work+0x1e/0x40 [snd_sof]
process_one_work+0x894/0x14b0
worker_thread+0x5e5/0xfb0
kthread+0x39d/0x760
ret_from_fork+0x31/0x70
ret_from_fork_asm+0x1a/0x30
Signed-off-by: Tamura Dai <kirinode0@gmail.com>
Link: https://patch.msgid.link/20250615235548.8591-1-kirinode0@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | sound/soc/sof/intel/hda.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index 9c8f79e55ec5d..624598c9e2df8 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -1209,11 +1209,11 @@ static int check_tplg_quirk_mask(struct snd_soc_acpi_mach *mach) return 0; } -static char *remove_file_ext(const char *tplg_filename) +static char *remove_file_ext(struct device *dev, const char *tplg_filename) { char *filename, *tmp; - filename = kstrdup(tplg_filename, GFP_KERNEL); + filename = devm_kstrdup(dev, tplg_filename, GFP_KERNEL); if (!filename) return NULL; @@ -1297,7 +1297,7 @@ struct snd_soc_acpi_mach *hda_machine_select(struct snd_sof_dev *sdev) */ if (!sof_pdata->tplg_filename) { /* remove file extension if it exists */ - tplg_filename = remove_file_ext(mach->sof_tplg_filename); + tplg_filename = remove_file_ext(sdev->dev, mach->sof_tplg_filename); if (!tplg_filename) return NULL; |