diff options
| author | Gergo Koteles <soyer@irl.hu> | 2023-12-09 22:18:29 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-12-10 10:06:31 +0100 |
| commit | 75a25d31b80770485641ad2789a854955f5c1e40 (patch) | |
| tree | 064602301f3db25ae0f58c3cb210a31dbbc4f855 /scripts/gdb/linux/utils.py | |
| parent | 9b726bf6ae11add6a7a52883a21f90ff9cbca916 (diff) | |
ALSA: hda/tas2781: leave hda_component in usable state
Unloading then loading the module causes a NULL ponter dereference.
The hda_unbind zeroes the hda_component, later the hda_bind tries
to dereference the codec field.
The hda_component is only initialized once by tas2781_generic_fixup.
Set only previously modified fields to NULL.
BUG: kernel NULL pointer dereference, address: 0000000000000322
Call Trace:
<TASK>
? __die+0x23/0x70
? page_fault_oops+0x171/0x4e0
? exc_page_fault+0x7f/0x180
? asm_exc_page_fault+0x26/0x30
? tas2781_hda_bind+0x59/0x140 [snd_hda_scodec_tas2781_i2c]
component_bind_all+0xf3/0x240
try_to_bring_up_aggregate_device+0x1c3/0x270
__component_add+0xbc/0x1a0
tas2781_hda_i2c_probe+0x289/0x3a0 [snd_hda_scodec_tas2781_i2c]
i2c_device_probe+0x136/0x2e0
Fixes: 5be27f1e3ec9 ("ALSA: hda/tas2781: Add tas2781 HDA driver")
Cc: stable@vger.kernel.org
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Link: https://lore.kernel.org/r/8b8ed2bd5f75fbb32e354a3226c2f966fa85b46b.1702156522.git.soyer@irl.hu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions