tree b46038a136df554d8fcf9c9ebcbafd55fbe03a67
parent 0bf28f85622b432fd3e9c1f7345b70d7ba44a31d
author Willy Tarreau <w@1wt.eu> 1563885467 +0200
committer Christopher Faulet <cfaulet@haproxy.com> 1563886227 +0200

BUG/MEDIUM: tcp-checks: do not dereference inexisting conn_stream

Github user @jpulz reported a crash with tcp-checks in issue #184
where cs==NULL. If we enter the function with cs==NULL and check->result
!= CHK_RES_UKNOWN, we'll go directly to out_end_tcpcheck and dereference
cs. We must validate there that cs is valid (and conn at the same time
since it would be NULL as well).

This fix must be backported as far as 1.8.

(cherry picked from commit ef91c939f364367bdc48f1b234c138d743abf56c)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>