Seen while looking at trunk crash stats. Crashes started showing up using the 2011081200 build. https://crash-stats.mozilla.com/report/list?signature=PK11PasswordPrompt%28PK11SlotInfoStr*,%20int,%20void*%29 links to the crashes. Possible pushlog regression range based on crash stats: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=be17ceae8d60&tochange=f262c389193e https://crash-stats.mozilla.com/report/index/5c9b114f-2d1a-4016-877f-e760e2110815 Frame Module Signature [Expand] Source 0 xul.dll PK11PasswordPrompt security/manager/ssl/src/nsNSSCallbacks.cpp:816 1 mozcrt19.dll arena_dalloc obj-firefox/memory/jemalloc/crtsrc/jemalloc.c:4282 2 nssckbi.dll nss_ZFreeIf security/nss/lib/base/arena.c:975 3 mozcrt19.dll arena_dalloc_small obj-firefox/memory/jemalloc/crtsrc/jemalloc.c:4153 4 nss3.dll PK11_NeedUserInit security/nss/lib/pk11wrap/pk11slot.c:1726 5 nspr4.dll MD_CURRENT_THREAD nsprpub/pr/src/md/windows/w95thred.c:308 6 nss3.dll error_get_my_stack security/nss/lib/base/error.c:130 7 nspr4.dll PR_Unlock nsprpub/pr/src/threads/combined/prulock.c:347 8 nss3.dll pk11_IsPresentCertLoad security/nss/lib/pk11wrap/pk11slot.c:1481 9 nss3.dll PK11_IsLoggedIn security/nss/lib/pk11wrap/pk11auth.c:785 10 nss3.dll PK11_DoPassword security/nss/lib/pk11wrap/pk11auth.c:605 11 nss3.dll PK11_Authenticate security/nss/lib/pk11wrap/pk11auth.c:334 12 nss3.dll PK11_GetBestSlotMultiple security/nss/lib/pk11wrap/pk11slot.c:2050 13 nss3.dll PK11_GetBestSlot security/nss/lib/pk11wrap/pk11slot.c:2071 14 ntdll.dll RtlInitializeCriticalSection 15 nss3.dll PK11_VerifyRecover security/nss/lib/pk11wrap/pk11obj.c:642 16 mozcrt19.dll malloc obj-firefox/memory/jemalloc/crtsrc/jemalloc.c:5925 17 nssutil3.dll PORT_Alloc_Util security/nss/lib/util/secport.c:112 18 nss3.dll DecryptSigBlock security/nss/lib/cryptohi/secvfy.c:79 19 nss3.dll SECKEY_CopyPublicKey security/nss/lib/cryptohi/seckey.c:1256 20 nss3.dll vfy_CreateContext security/nss/lib/cryptohi/secvfy.c:408 21 nssutil3.dll SECOID_FindOIDTag_Util security/nss/lib/util/secoid.c:2013 22 nss3.dll vfy_VerifyData security/nss/lib/cryptohi/secvfy.c:705 23 nss3.dll VFY_VerifyDataWithAlgorithmID security/nss/lib/cryptohi/secvfy.c:755 24 nss3.dll seckey_ExtractPublicKey security/nss/lib/cryptohi/seckey.c:702 25 nss3.dll CERT_VerifySignedDataWithPublicKey security/nss/lib/certhigh/certvfy.c:92 26 nss3.dll CERT_ExtractPublicKey security/nss/lib/cryptohi/seckey.c:780 27 nss3.dll CERT_VerifySignedData security/nss/lib/certhigh/certvfy.c:146 28 nss3.dll cert_VerifyCertChainOld security/nss/lib/certhigh/certvfy.c:480 29 nssutil3.dll SECITEM_ItemsAreEqual_Util security/nss/lib/util/secitem.c:191 30 nss3.dll cert_VerifyCertChain security/nss/lib/certhigh/certvfy.c:695 31 ntdll.dll RtlDeleteCriticalSection 32 nss3.dll CERT_VerifyCertChain security/nss/lib/certhigh/certvfy.c:704 33 nss3.dll CERT_VerifyCert security/nss/lib/certhigh/certvfy.c:1292 34 nspr4.dll PR_Now nsprpub/pr/src/md/windows/ntmisc.c:356 35 nss3.dll CERT_VerifyCertNow security/nss/lib/certhigh/certvfy.c:1343 36 nspr4.dll MD_CURRENT_THREAD nsprpub/pr/src/md/windows/w95thred.c:308 37 xul.dll PSM_SSL_PKIX_AuthCertificate security/manager/ssl/src/nsNSSCallbacks.cpp:984 38 nss3.dll nssTrust_AddRef security/nss/lib/pki/certificate.c:119 39 nss3.dll nssPKIObject_Unlock security/nss/lib/pki/pkibase.c:73 40 nss3.dll CERT_DupCertificate security/nss/lib/certdb/certdb.c:1387 41 nss3.dll stan_GetCERTCertificate security/nss/lib/pki/pki3hack.c:874 42 ssl3.dll SSL_PeerCertificate security/nss/lib/ssl/sslauth.c:57 43 xul.dll AuthCertificateCallback security/manager/ssl/src/nsNSSCallbacks.cpp:1087 44 nss3.dll seckey_UpdateCertPQGChain security/nss/lib/cryptohi/seckey.c:442 45 ssl3.dll ssl3_HandleCertificate security/nss/lib/ssl/ssl3con.c:7903 46 nspr4.dll PR_GetCurrentThread nsprpub/pr/src/threads/prcthr.c:174 47 ssl3.dll ssl3_HandleHandshakeMessage security/nss/lib/ssl/ssl3con.c:8601 48 nspr4.dll MD_CURRENT_THREAD nsprpub/pr/src/md/windows/w95thred.c:308 49 nspr4.dll MD_CURRENT_THREAD nsprpub/pr/src/md/windows/w95thred.c:308 50 ssl3.dll ssl3_HandleHandshake security/nss/lib/ssl/ssl3con.c:8725 51 ssl3.dll ssl3_HandleRecord security/nss/lib/ssl/ssl3con.c:9064 52 nspr4.dll PR_MD_RECV nsprpub/pr/src/md/windows/w95sock.c:354 53 nspr4.dll SocketRecv nsprpub/pr/src/io/prsocket.c:639 54 ssl3.dll ssl3_SendClientHello security/nss/lib/ssl/ssl3con.c:4032 55 ssl3.dll ssl_DefRecv security/nss/lib/ssl/ssldef.c:94 56 ssl3.dll ssl3_GatherCompleteHandshake security/nss/lib/ssl/ssl3gthr.c:209 57 ssl3.dll ssl_GatherRecord1stHandshake security/nss/lib/ssl/sslcon.c:1258 58 ssl3.dll ssl_Do1stHandshake security/nss/lib/ssl/sslsecur.c:151 59 nspr4.dll PR_WaitCondVar nsprpub/pr/src/threads/combined/prucv.c:547 60 ssl3.dll ssl_SecureSend security/nss/lib/ssl/sslsecur.c:1222 61 ssl3.dll ssl_Write security/nss/lib/ssl/sslsock.c:1659 62 xul.dll nsSSLThread::Run 63 nspr4.dll MD_CURRENT_THREAD nsprpub/pr/src/md/windows/w95thred.c:308 64 nspr4.dll PR_NativeRunThread nsprpub/pr/src/threads/combined/pruthr.c:426 65 mozcrt19.dll getptd_noexit obj-firefox/memory/jemalloc/crtsrc/tidtable.c:614 66 nspr4.dll pr_root nsprpub/pr/src/md/windows/w95thred.c:122 67 mozcrt19.dll _callthreadstartex obj-firefox/memory/jemalloc/crtsrc/threadex.c:348 68 mozcrt19.dll _threadstartex obj-firefox/memory/jemalloc/crtsrc/threadex.c:326 69 kernel32.dll kernel32.dll@0x1652c 70 ntdll.dll RtlUserThreadStart 71 kernel32.dll kernel32.dll@0x992ef 72 kernel32.dll kernel32.dll@0x992ef

Adding Brian per chofmann's suggestion.

Despite the numerous bogus entries in the above stack trace, it's possible to see the correct stack by ignoring the obvious bogons, such as lines 59, 53, 52, 48-49 (all MD_CURRENT_THREAD lines), 46, 44, 39, 38, 34, 31, 29, 21, 17, 16, 14, 7, 6, 5, 3, 2, & 1. Is this just a simple stack overflow? Note that function PK11PasswordPrompt (line 0) is a PSM function, not NSS.