1. 23 Sep, 2020 1 commit
  2. 22 Sep, 2020 1 commit
    • Takashi Iwai's avatar
      ALSA: ctl: Workaround for lockdep warning wrt card->ctl_files_rwlock · 6564d0ad
      Takashi Iwai authored
      The recent change in lockdep for read lock caused the deadlock
      warnings in ALSA control code which uses the read_lock() for
      notification and else while write_lock_irqsave() is used for adding
      and removing the list entry.  Although a deadlock would practically
      never hit in a real usage (the addition and the deletion can't happen
      with the notification), it's better to fix the read_lock() usage in a
      semantically correct way.
      
      This patch replaces the read_lock() calls with read_lock_irqsave()
      version for avoiding a reported deadlock.  The notification code path
      takes the irq disablement in anyway, and other code paths are very
      short execution, hence there shouldn't be any big performance hit by
      this change.
      
      Fixes: e9181886 ("locking: More accurate annotations for read_lock()")
      Reported-by: syzbot+561a74f84100162990b2@syzkaller.appspotmail.com
      Link: https://lore.kernel.org/r/20200922084953.29018-1-tiwai@suse.deSigned-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      6564d0ad
  3. 21 Sep, 2020 6 commits
  4. 11 Sep, 2020 1 commit
  5. 09 Sep, 2020 14 commits
  6. 07 Sep, 2020 1 commit
  7. 03 Sep, 2020 16 commits