Description: panic in start_motor+0x21 when /dev/fd0 is read by multiple threads.
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=1932150
 https://www.openwall.com/lists/oss-security/2021/03/11/1
Notes:
Bugs:
upstream: released (4.5-rc5) [a0c80efe5956ccce9fe7ae5c78542578c07bc20a]
5.10-upstream-stable: N/A "Fixed before branching point"
4.19-upstream-stable: N/A "Fixed before branching point"
4.9-upstream-stable: N/A "Fixed before branching point"
sid: released (4.5.1-1)
4.19-buster-security: N/A "Fixed before branching point"
4.9-stretch-security: N/A "Fixed before branching point"