Description: blk-mq: fix race between timeout and freeing request References: https://source.android.com/security/bulletin/2018-02-01 Notes: Bugs: upstream: released (4.3-rc1) [0048b4837affd153897ed1222283492070027aa9] 4.9-upstream-stable: N/A "Fixed before branching point" 3.16-upstream-stable: released (3.16.55) [7acba7c0621efdfb09bb514500ba22f965aba68b] 3.2-upstream-stable: N/A "Vulnerable code not present" sid: released (4.2.3-1) 4.9-stretch-security: N/A "Fixed before branching point" 3.16-jessie-security: released (3.16.56-1) 3.2-wheezy-security: N/A "Vulnerable code not present"