BUG/MINOR: peers: Use after free of "peers" section.
When a "peers" section has not any local peer, it is removed of the list
of "peers" sections by check_config_validity(). But a stick-table which
refers to a "peers" section stores a pointer to this peers section.
These pointer must be reset to NULL value for each stick-table refering to
such a "peers" section to prevent stktable_init() to start the peers frontend
attached to the peers section dereferencing the invalid pointer.
Furthemore this patch stops the peers frontend as this is done for other
configurations invalidated by check_config_validity().
Thank you to Olivier D for having reported this issue with such a
simple configuration file which made haproxy crash when started with
-c option for configuration file validation.
defaults
mode http
peers mypeers
peer toto 127.0.0.1:1024
backend test
stick-table type ip size 10k expire 1h store http_req_rate(1h) peers mypeers
Must be backported to 2.1 and 2.0.
(cherry picked from commit 87eacbb12fb819adb3acd68a221ead27c70efb43)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit 26ca3d4aa8d6e18add3ca4c4b472c6e12be6f99b)
Signed-off-by: Willy Tarreau <w@1wt.eu>
1 file changed