There's been a very long running bug that seems to have been neglected for a while, where amdgpu consistently triggers a KASAN error at start:
BUG: KASAN: global-out-of-bounds in read_indirect_azalia_reg+0x1d4/0x2a0 [amdgpu] Read of size 4 at addr ffffffffc2274b28 by task modprobe/1889
After digging through amd's rather creative method for accessing registers, I eventually discovered the problem likely has to do with the fact that on my dce120 GPU there are supposedly 7 sets of audio registers. But we only define a register mapping for 6 sets.
So, fix this and fix the KASAN warning finally.
Signed-off-by: Lyude Paul lyude@redhat.com Cc: stable@vger.kernel.org --- Sending this one separately from the rest of my fixes since:
* It's definitely completely unrelated to the Gitlab 2171 issue * I'm not sure if this is the correct fix since it's in DC
drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c b/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c index 1b70b78e2fa15..af631085e88c5 100644 --- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c @@ -359,7 +359,8 @@ static const struct dce_audio_registers audio_regs[] = { audio_regs(2), audio_regs(3), audio_regs(4), - audio_regs(5) + audio_regs(5), + audio_regs(6), };
#define DCE120_AUD_COMMON_MASK_SH_LIST(mask_sh)\