diff options
| author | Gergo Koteles <soyer@irl.hu> | 2023-12-14 23:04:44 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-12-15 13:35:49 +0000 |
| commit | f32c80d34249e1cfb2e647ab3c8ef38a460c787f (patch) | |
| tree | 05f7f21b4a10d0afe96fb02140e390a943391892 /drivers/fpga/microchip-spi.c | |
| parent | dc96528b176fa6e55a3dc01060fe9d97be450ce9 (diff) | |
ASoC: tas2781: check the validity of prm_no/cfg_no
Add additional checks for program/config numbers to avoid loading from
invalid addresses.
If prm_no/cfg_no is negative, skip uploading program/config.
The tas2781-hda driver caused a NULL pointer dereference after loading
module, and before first runtime_suspend.
the state was:
tas_priv->cur_conf = -1;
tas_priv->tasdevice[i].cur_conf = 0;
program = &(tas_fmw->programs[-1]);
BUG: kernel NULL pointer dereference, address: 0000000000000010
Call Trace:
<TASK>
? __die+0x23/0x70
? page_fault_oops+0x171/0x4e0
? vprintk_emit+0x175/0x2b0
? exc_page_fault+0x7f/0x180
? asm_exc_page_fault+0x26/0x30
? tasdevice_load_block_kernel+0x21/0x310 [snd_soc_tas2781_fmwlib]
tasdevice_select_tuningprm_cfg+0x268/0x3a0 [snd_soc_tas2781_fmwlib]
tasdevice_tuning_switch+0x69/0x710 [snd_soc_tas2781_fmwlib]
tas2781_hda_playback_hook+0xd4/0x110 [snd_hda_scodec_tas2781_i2c]
Fixes: 915f5eadebd2 ("ASoC: tas2781: firmware lib")
CC: <stable@vger.kernel.org>
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Link: https://msgid.link/r/523780155bfdca9bc0acd39efc79ed039454818d.1702591356.git.soyer@irl.hu
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/fpga/microchip-spi.c')
0 files changed, 0 insertions, 0 deletions