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ALSA: timer: Fix double unlink of active_list
ALSA timer instance object has a couple of linked lists and they are unlinked unconditionally at snd_timer_stop(). Meanwhile snd_timer_interrupt() unlinks it, but it calls list_del() which leaves the element list itself unchanged. This ends up with unlinking twice, and it was caught by syzkaller fuzzer. The fix is to use list_del_init() variant properly there, too. Change-Id: I95e2ab06180dfe43fb6b7c2875a866b53ca245ce Reported-by: Dmitry Vyukov <firstname.lastname@example.org> Tested-by: Dmitry Vyukov <email@example.com> Cc: <firstname.lastname@example.org> Signed-off-by: Takashi Iwai <email@example.com>
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