On Sun, 09 Sep 2018 15:25:12 +0200, Takashi Sakamoto wrote: > > When executing 'fw_run_transaction()' with 'TCODE_WRITE_BLOCK_REQUEST', > an address of 'payload' argument is used for streaming DMA mapping by > 'firewire_ohci' module if 'size' argument is larger than 8 byte. > Although in this case the address should not be on kernel stack, current > implementation of ALSA bebob driver uses data in kernel stack for a cue > to boot M-Audio devices. This often brings unexpected result, especially > for a case of CONFIG_VMAP_STACK=y. > > This commit fixes the bug. > > Reference: https://bugzilla.kernel.org/show_bug.cgi?id=201021 > Reference: https://forum.manjaro.org/t/firewire-m-audio-410-driver-wont-load-firmware/51165 > Fixes: a2b2a7798fb6('ALSA: bebob: Send a cue to load firmware for M-Audio Firewire series') > Cc: <stable@xxxxxxxxxxxxxxx> # v3.16+ > Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx> Applied, thanks. Takashi
