minfrin
commented
3 years ago Putting breakpoints onto the constructor and destructor of the mutexes, we get a double destructor call:
Breakpoint 1, Mutex::Mutex (this=0x555555799160) at MutexFactory.cpp:44
44 Mutex::Mutex()
Missing separate debuginfos, use: yum debuginfo-install cyrus-sasl-lib-2.1.27-5.el8.x86_64 expat-2.2.5-4.el8.x86_64 keyutils-libs-1.5.10-6.el8.x86_64 krb5-libs-1.18.2-5.el8.x86_64 libcom_err-1.45.6-1.el8.x86_64 libffi-3.1-22.el8.x86_64 libgcc-8.3.1-5.1.el8.x86_64 libselinux-2.9-4.el8_3.x86_64 libstdc++-8.3.1-5.1.el8.x86_64 libtasn1-4.13-3.el8.x86_64 libuuid-2.32.1-24.el8.x86_64 libxcrypt-4.1.1-4.el8.x86_64 libxml2-2.9.7-8.el8.x86_64 nspr-4.25.0-2.el8_2.x86_64 nss-3.53.1-17.el8_3.x86_64 nss-softokn-3.53.1-17.el8_3.x86_64 nss-softokn-freebl-3.53.1-17.el8_3.x86_64 nss-util-3.53.1-17.el8_3.x86_64 openldap-2.4.46-15.el8.x86_64 openssl-libs-1.1.1g-15.el8_3.x86_64 p11-kit-0.23.14-5.el8_0.x86_64 p11-kit-trust-0.23.14-5.el8_0.x86_64 pcre2-10.32-2.el8.x86_64 sqlite-libs-3.26.0-11.el8.x86_64 zlib-1.2.11-16.2.el8_3.x86_64
(gdb) b Mutex::~Mutex
Breakpoint 2 at 0x7ffff1b9423c: Mutex::~Mutex. (2 locations)
(gdb) cont
Continuing.
Breakpoint 1, Mutex::Mutex (this=0x555555969f70) at MutexFactory.cpp:44
44 Mutex::Mutex()
(gdb) cont
Continuing.
Breakpoint 1, Mutex::Mutex (this=0x55555596a1a0) at MutexFactory.cpp:44
44 Mutex::Mutex()
(gdb) cont
Continuing.
Breakpoint 1, Mutex::Mutex (this=0x55555596a290) at MutexFactory.cpp:44
44 Mutex::Mutex()
(gdb) cont
Continuing.
Breakpoint 1, Mutex::Mutex (this=0x55555596a2e0) at MutexFactory.cpp:44
44 Mutex::Mutex()
(gdb) cont
Continuing.
Breakpoint 2, Mutex::~Mutex (this=0x55555596a2e0, __in_chrg=<optimized out>) at MutexFactory.cpp:56
56 }
(gdb) cont
Continuing.
Breakpoint 2, Mutex::~Mutex (this=0x55555596a2e0, __in_chrg=<optimized out>) at MutexFactory.cpp:50
50 Mutex::~Mutex()
(gdb) cont
Continuing.
Breakpoint 1, Mutex::Mutex (this=0x5555559b8d50) at MutexFactory.cpp:44
44 Mutex::Mutex()
(gdb) cont
Continuing.
Breakpoint 1, Mutex::Mutex (this=0x5555559b8eb0) at MutexFactory.cpp:44
44 Mutex::Mutex()
(gdb) cont
Continuing.
Breakpoint 1, Mutex::Mutex (this=0x5555559b8f00) at MutexFactory.cpp:44
44 Mutex::Mutex()
(gdb) cont
Continuing.
nss-out: intermediate: CN=Sectigo RSA Extended Validation Secure Server CA,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB
nss-out: intermediate: CN=USERTrust RSA Certification Authority,O=The USERTRUST Network,L=Jersey City,ST=New Jersey,C=US
nss-out: intermediate: CN=AAA Certificate Services,O=Comodo CA Limited,L=Salford,ST=Greater Manchester,C=GB
nss-out: intermediate: CN=USERTrust RSA Certification Authority,O=The USERTRUST Network,L=Jersey City,ST=New Jersey,C=US
nss-out: intermediate: CN=AddTrust External CA Root,OU=AddTrust External TTP Network,O=AddTrust AB,C=SE
nss-out: intermediate: CN=USERTrust RSA Certification Authority,O=The USERTRUST Network,L=Jersey City,ST=New Jersey,C=US
nss-out: intermediate: CN=DigiCert SHA2 Extended Validation Server CA,OU=www.digicert.com,O=DigiCert Inc,C=US
nss-out: intermediate: CN=DigiCert High Assurance EV Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US
Breakpoint 2, Mutex::~Mutex (this=0x5555559b8f00, __in_chrg=<optimized out>) at MutexFactory.cpp:56
56 }
(gdb) cont
Continuing.
Breakpoint 2, Mutex::~Mutex (this=0x5555559b8f00, __in_chrg=<optimized out>) at MutexFactory.cpp:50
50 Mutex::~Mutex()
(gdb) cont
Continuing.
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff2064700 in ?? ()
rijswijk
blackbird1
I have code that calls NSS on EL8.
When softhsm is installed and present, the code crashes on shutdown in the atexit handler as follows:
Placing a breakpoint on the destructor, we see the destructor is called twice.
The first time the destructor is called is during initialisation of NSS:
The second time the destructor is called, is during atexit() shutdown:
Digging into the MutexFactory we get this:
Any ideas so far?