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From 3f3b00c8753fb591a4cd7b770ce069d455dcc4d6 Mon Sep 17 00:00:00 2001
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From: Lennart Poettering <lennart@poettering.net>
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Date: Tue, 4 Dec 2018 22:13:39 +0100
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Subject: [PATCH] resolved: pin stream while calling callbacks for it
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These callbacks might unref the stream, but we still have to access it,
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let's hence ref it explicitly.
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Maybe fixes: #10725
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(cherry picked from commit d973d94dec349fb676fdd844f6fe2ada3538f27c)
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Resolves: #2110549
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---
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src/resolve/resolved-dns-stream.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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diff --git a/src/resolve/resolved-dns-stream.c b/src/resolve/resolved-dns-stream.c
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index 555e200a23..ca0313d1d7 100644
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--- a/src/resolve/resolved-dns-stream.c
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+++ b/src/resolve/resolved-dns-stream.c
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@@ -42,6 +42,8 @@ static int dns_stream_update_io(DnsStream *s) {
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}
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static int dns_stream_complete(DnsStream *s, int error) {
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+ _cleanup_(dns_stream_unrefp) _unused_ DnsStream *ref = dns_stream_ref(s); /* Protect stream while we process it */
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+
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assert(s);
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#if ENABLE_DNS_OVER_TLS
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@@ -316,7 +318,7 @@ static int on_stream_timeout(sd_event_source *es, usec_t usec, void *userdata) {
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}
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static int on_stream_io(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
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- DnsStream *s = userdata;
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+ _cleanup_(dns_stream_unrefp) DnsStream *s = dns_stream_ref(userdata); /* Protect stream while we process it */
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int r;
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assert(s);
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