dnsmasq

mirror of http://thekelleys.org.uk/git/dnsmasq.git synced 2026-09-30 12:42:22 +07:00

T

Yuefu Zhou a9880c595f Close listening socket on fatal accept() errors to prevent busy loop

If a TCP listening socket is externally destroyed (e.g., via ss -K,
or a process using NETLINK_SOCK_DIAG/SOCK_DESTROY), accept()
permanently returns -1 with errno == EINVAL because the socket is
no longer in TCP_LISTEN state.  Since poll() keeps reporting the
stale fd as readable, the main loop spins calling
do_tcp_connection() -> accept() indefinitely, consuming 100% CPU.

Distinguish transient errors (EAGAIN, ECONNABORTED, EMFILE, ENFILE,
ENOMEM, ENOBUFS) from fatal ones.  On transient errors just return
and retry on the next poll cycle.  On fatal errors close the tcpfd
and mark it -1 so poll() no longer selects it.

In --bind-dynamic mode the listener will be automatically rebuilt
on the next address change event via newaddress().

Signed-off-by: Yuefu Zhou <yuefu16.zhou@gmail.com>

2026-09-04 22:00:52 +01:00

bld

Remove hash-questions.c - no longer required.

2024-11-02 21:29:47 +00:00

contrib

Fix OOB writes in contrib/leasequesry/leasequery.c

2026-05-30 15:58:52 +01:00

dbus

Allow configuring filter-A/AAAA via dbus.

2023-03-08 15:35:05 +00:00

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