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BUG/MINOR: listener: also clear the error flag on a paused listener

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When accept() fails because a listener is temporarily paused, the
FD might have both FD_POLL_HUP and FD_POLL_ERR bits set. While we do
not exploit FD_POLL_ERR here it's better to clear it because it is
reported on "show fd" and is confusing.

This may be backported to all versions.
This commit is contained in:
Willy Tarreau 2019-12-10 08:42:21 +01:00
parent 7cdeb61701
commit 20aeb1c7cd
1 changed files with 2 additions and 2 deletions
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4
src/listener.c
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@ -793,13 +793,13 @@ void listener_accept(int fd)
if (unlikely(cfd == -1)) {
switch (errno) {
case EAGAIN:
if (fdtab[fd].ev & FD_POLL_HUP) {
if (fdtab[fd].ev & (FD_POLL_HUP|FD_POLL_ERR)) {
/* the listening socket might have been disabled in a shared
* process and we're a collateral victim. We'll just pause for
* a while in case it comes back. In the mean time, we need to
* clear this sticky flag.
*/
_HA_ATOMIC_AND(&fdtab[fd].ev, ~FD_POLL_HUP);
_HA_ATOMIC_AND(&fdtab[fd].ev, ~(FD_POLL_HUP|FD_POLL_ERR));
goto transient_error;
}
fd_cant_recv(fd);