Date: Mon, 08 Jun 2026 18:58:47 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 295942] SSL_OP_ENABLE_KTLS_TX_ZEROCOPY_SENDFILE data corruption on files > 128KB Message-ID: <bug-295942-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=295942 Bug ID: 295942 Summary: SSL_OP_ENABLE_KTLS_TX_ZEROCOPY_SENDFILE data corruption on files > 128KB Product: Base System Version: 15.0-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: dinoex@FreeBSD.org Setup: lighttpd 1.4.82 running on FreeBSD-15.0 with OpenSSL 3.5.4 from base or with OpenSSL 3.5.6 from ports Network driver: igb0 Serving static files with plain http and https using mod_openssl Problem: I got reports that a source packages fetched from my server where corrupted. I was able to reproduce this on multiple servers. Even with the default lighttpd config and adding: ssl.engine = "enable". Steps to reproduce: The file must be > 128 kbyte to become corrupted. Fetching the files and running sha256sum an the result showed: 6ef4e286... 20260601.tgz.curl.http 6ef4e286... 20260601.tgz.curl.https 6ef4e286... 20260601.tgz.fetch.http a717baa2... 20260601.tgz.fetch.https 6ef4e286... 20260601.tgz.wget.http 347d964a... 20260601.tgz.wget.https 6ef4e286... is the correct checksum The error log reports: lighttpd-1.4.82/src/mod_openssl.c.4808) SSL: addr:2***:****::*** ssl_err:5 ret:-1 errno:35: Resource temporarily unavailable I was unable to reproduce the problem on servers running FreeBSD-14.4. 14.4-RELEASE-p5 ssl=openssl35 mod_openssl OK 14.4-RELEASE-p5 ssl=openssl35 mod_openssl OK 15.0-RELEASE-p9 ssl=openssl35 mod_openssl broken 15.0-RELEASE-p9 ssl=base mod_openssl broken 15.0-RELEASE-p9 ssl=openssl35 mod_wolfssl OK sysctl kern.ipc.tls.stats | grep -v ': 0' FreeBSD-14: all values zero FreeBSD-15: kern.ipc.tls.stats.ocf.separate_output: 2114 kern.ipc.tls.stats.ocf.inplace: 12982513 kern.ipc.tls.stats.ocf.tls13_chacha20_encrypts: 232 kern.ipc.tls.stats.ocf.tls13_chacha20_decrypts: 191 kern.ipc.tls.stats.ocf.tls13_gcm_encrypts: 12984395 kern.ipc.tls.stats.ocf.tls13_gcm_decrypts: 6557803 kern.ipc.tls.stats.enable_calls: 3204921 kern.ipc.tls.stats.offload_total: 3204921 kern.ipc.tls.stats.threads: 4 Workaround: Disable KTLS in lighttpd.conf: ssl.openssl.ssl-conf-cmd += ("Options" => "-KTLS") -- You are receiving this mail because: You are the assignee for the bug.home | help
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