Description: can, slip: Protect tty->disc_data in write_wakeup and close with RCU
References:
 https://bugzilla.suse.com/show_bug.cgi?id=1162002
Notes:
Bugs:
upstream: released (5.5) [0ace17d56824165c7f4c68785d6b58971db954dd]
4.19-upstream-stable: released (4.19.100) [bd1448458c6a67782d4e82c181b5540b5727546b]
4.9-upstream-stable: released (4.9.212) [0beba1d7e8e164694ae1743238f1bdf4de4f1f34]
3.16-upstream-stable: released (3.16.83) [10912babe0dff14eea532492a6b9c55f1471fd75]
sid: released (5.4.19-1)
4.19-buster-security: released (4.19.118-1)
4.9-stretch-security: released (4.9.210-1+deb9u1) [patches/bugfix/all/can-slip-protect-tty-disc_data-in-write_wakeup-and-c.patch]
3.16-jessie-security: released (3.16.84-1)