Messages in this thread | | | Date | Mon, 28 Oct 2019 14:13:20 +0100 | From | Takashi Iwai <> | Subject | Re: KMSAN: uninit-value in get_term_name |
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On Mon, 28 Oct 2019 11:32:07 +0100, syzbot wrote: > > Uninit was stored to memory at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:151 [inline] > kmsan_internal_chain_origin+0xbd/0x180 mm/kmsan/kmsan.c:319 > __msan_chain_origin+0x6b/0xd0 mm/kmsan/kmsan_instr.c:179 > parse_term_proc_unit+0x73d/0x7e0 sound/usb/mixer.c:896 > __check_input_term+0x13ef/0x2360 sound/usb/mixer.c:989
So this comes from the invalid descriptor for a processing unit, and it's very likely the same issue as already spotted -- the validator up to 5.3-rc4 had a bug that passed the invalid descriptor falsely. This should have been covered by 5.3-rc5, commit ba8bf0967a15 ("ALSA: usb-audio: Fix copy&paste error in the validator").
thanks,
Takashi
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