Bug 2256083

On a low-usage instance we have started getting a few SEGV logged each day. There is no obvious user impact. The stack trace is always the same, as given below. There were no problems under FC38, and the SEGV started immediately following upgrade to FC39. Now running cyrus-imapd-3.8.1-4.fc39.

In all of the cases I have just looked at the client was an IOS device. I don't know whether that is always the case.

Reproducible: Sometimes

Steps to Reproduce:
1. Seems to happen when a client connects to check for new mail.
2.
3.
Actual Results:  
Module libnss_systemd.so.2 from rpm systemd-254.7-1.fc39.x86_64
Module libnss_sss.so.2 from rpm sssd-2.9.3-1.fc39.x86_64
Module libnss_resolve.so.2 from rpm systemd-254.7-1.fc39.x86_64
Module libcap.so.2 from rpm libcap-2.48-9.fc39.x86_64
Module libnss_myhostname.so.2 from rpm systemd-254.7-1.fc39.x86_64
Module libplain.so from rpm cyrus-sasl-2.1.28-11.fc39.x86_64
Module liblogin.so from rpm cyrus-sasl-2.1.28-11.fc39.x86_64
Module libgssapiv2.so from rpm cyrus-sasl-2.1.28-11.fc39.x86_64
Module libsasldb.so from rpm cyrus-sasl-2.1.28-11.fc39.x86_64
Module libanonymous.so from rpm cyrus-sasl-2.1.28-11.fc39.x86_64
Module libevent-2.1.so.7 from rpm libevent-2.1.12-9.fc39.x86_64
Module liblzma.so.5 from rpm xz-5.4.4-1.fc39.x86_64
Module libselinux.so.1 from rpm libselinux-3.5-5.fc39.x86_64
Module libkeyutils.so.1 from rpm keyutils-1.6.1-7.fc39.x86_64
Module libcrypt.so.2 from rpm libxcrypt-4.4.36-2.fc39.x86_64
Module libicalvcal.so.3 from rpm libical-3.0.17-1.fc39.x86_64
Module libicalss.so.3 from rpm libical-3.0.17-1.fc39.x86_64
Module libical.so.3 from rpm libical-3.0.17-1.fc39.x86_64
Module libxml2.so.2 from rpm libxml2-2.10.4-3.fc39.x86_64
Module libpcre2-posix.so.3 from rpm pcre2-10.42-1.fc39.2.x86_64
Module libpcre2-8.so.0 from rpm pcre2-10.42-1.fc39.2.x86_64
Module libpq.so.5 from rpm libpq-15.3-1.fc39.x86_64
Module libmariadb.so.3 from rpm mariadb-connector-c-3.3.5-2.fc39.x86_64
Module libkrb5support.so.0 from rpm krb5-1.21.2-2.fc39.x86_64
Module libk5crypto.so.3 from rpm krb5-1.21.2-2.fc39.x86_64
Module libkrb5.so.3 from rpm krb5-1.21.2-2.fc39.x86_64
Module libgssapi_krb5.so.2 from rpm krb5-1.21.2-2.fc39.x86_64
Module libjansson.so.4 from rpm jansson-2.13.1-7.fc39.x86_64
Module libshp.so.2 from rpm shapelib-1.5.0-16.fc39.x86_64
Module libzstd.so.1 from rpm zstd-1.5.5-4.fc39.x86_64
Module libnghttp2.so.14 from rpm nghttp2-1.55.1-4.fc39.x86_64
Module libicudata.so.73 from rpm icu-73.2-2.fc39.x86_64
Module libicuuc.so.73 from rpm icu-73.2-2.fc39.x86_64
Module libicui18n.so.73 from rpm icu-73.2-2.fc39.x86_64
Module libuuid.so.1 from rpm util-linux-2.39.2-1.fc39.x86_64
Module libz.so.1 from rpm zlib-1.2.13-4.fc39.x86_64
Module libcom_err.so.2 from rpm e2fsprogs-1.47.0-2.fc39.x86_64
Module libcrypto.so.3 from rpm openssl-3.1.1-4.fc39.x86_64
Module libssl.so.3 from rpm openssl-3.1.1-4.fc39.x86_64
Module libsasl2.so.3 from rpm cyrus-sasl-2.1.28-11.fc39.x86_64
Module libcyrus.so.0 from rpm cyrus-imapd-3.8.1-4.fc39.x86_64
Module libcyrus_min.so.0 from rpm cyrus-imapd-3.8.1-4.fc39.x86_64
Module libcyrus_sieve.so.0 from rpm cyrus-imapd-3.8.1-4.fc39.x86_64
Module libcyrus_imap.so.0 from rpm cyrus-imapd-3.8.1-4.fc39.x86_64
Module imapd from rpm cyrus-imapd-3.8.1-4.fc39.x86_64
Stack trace of thread 3580:
#0  0x00007f02670b9127 unlink_chunk.isra.0 (libc.so.6 + 0x9b127)
#1  0x00007f02670bc0ad _int_malloc (libc.so.6 + 0x9e0ad)
#2  0x00007f02670bce22 __libc_malloc (libc.so.6 + 0x9ee22)
#3  0x00007f0267457936 sha384_dupctx.lto_priv.0 (libcrypto.so.3 + 0x2579>
#4  0x00007f026737cfab EVP_MD_CTX_copy_ex (libcrypto.so.3 + 0x17cfab)
#5  0x00007f02673b0e78 HMAC_CTX_copy (libcrypto.so.3 + 0x1b0e78)
#6  0x00007f026748104e hmac_dup.lto_priv.0 (libcrypto.so.3 + 0x28104e)
#7  0x00007f026739e9a2 EVP_MAC_CTX_dup (libcrypto.so.3 + 0x19e9a2)
#8  0x00007f0267472068 tls1_prf_P_hash (libcrypto.so.3 + 0x272068)
#9  0x00007f0267472326 kdf_tls1_prf_derive.lto_priv.0 (libcrypto.so.3 + >
#10 0x00007f0267867038 tls1_PRF.constprop.0 (libssl.so.3 + 0x72038)
#11 0x00007f0267831173 tls1_setup_key_block (libssl.so.3 + 0x3c173)
#12 0x00007f0267868c23 tls_process_change_cipher_spec.isra.0 (libssl.so.>
#13 0x00007f026785737f state_machine (libssl.so.3 + 0x6237f)
#14 0x00007f0267b6a80e tls_start_servertls (libcyrus_imap.so.0 + 0xcb80e)
#15 0x000056446fd9b730 cmd_starttls.lto_priv.0 (imapd + 0x34730)
#16 0x000056446fdb48bc service_main.isra.0 (imapd + 0x4d8bc)
#17 0x000056446fd795ee main (imapd + 0x125ee)
#18 0x00007f026704614a __libc_start_call_main (libc.so.6 + 0x2814a)
#19 0x00007f026704620b __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x2820>
#20 0x000056446fd79ac5 _start (imapd + 0x12ac5)
ELF object binary architecture: AMD x86-64


Expected Results:  
No error