Description of problem:

Core was generated by `/usr/sbin/pcscd --foreground --auto-exit'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007fd01b699a84 in pthread_mutex_lock () from /lib64/libpthread.so.0
[Current thread is 1 (Thread 0x7fd0067fc700 (LWP 851798))]
(gdb) bt
#0 0x00007fd01b699a84 in pthread_mutex_lock () at /lib64/libpthread.so.0
#1 0x000055dd8362a5ee in IFDStatusICC
(rContext=rContext@entry=0x55dd83a2c420, pdwStatus=pdwStatus@entry=0x7fd0067fba28)
at ifdwrapper.c:346
#2 0x000055dd83629a90 in EHStatusHandlerThread (rContext=0x55dd83a2c420) at eventhandler.c:332
#3 0x00007fd01b6971cf in start_thread () at /lib64/libpthread.so.0
#4 0x00007fd01a3c1e73 in clone () at /lib64/libc.so.6
(gdb) up
#1 0x000055dd8362a5ee in IFDStatusICC (rContext=rContext@entry=0x55dd83a2c420,
pdwStatus=pdwStatus@entry=0x7fd0067fba28) at ifdwrapper.c:346
346 (void)pthread_mutex_lock(rContext->mMutex);
(gdb) print *rContext
$1 = {library = 0x7fd00010f9b0 " \314\t", device = 0x7fd000031e20 "`\242\023",
pthThread = 140531438962432, pthCardEvent = 0x7fd014281330, mMutex = 0x0, handlesList = {
head_sentinel = 0x7fd0000b5470, tail_sentinel = 0x7fd0000be3d0, mid = 0x0, numels = 0,
spareels = 0x7fd00005dca0, spareelsnum = 1, iter_active = 0, iter_pos = 0,
iter_curentry = 0x0, attrs = {comparator = 0x0,
seeker = 0x55dd8362b240 <RDR_CLIHANDLES_seeker>, meter = 0x0, copy_data = 0, hasher = 0x0,
serializer = 0x0, unserializer = 0x0}}, handlesList_lock = {_data = {_lock = 0,
__count = 0, __owner = 0, __nusers = 0, __kind = -1, __spins = 0, __elision = 0, __list = {
__prev = 0x0, __next = 0x0}},
__size = '\000' <repeats 16 times>, "\377\377\377\377", '\000' <repeats 19 times>,
__align = 0}, psFunctions = {psFunctions_v2 =

{pvfCreateChannel = 0x0, pvfCloseChannel = 0x0, pvfGetCapabilities = 0x0, pvfSetCapabilities = 0x0, pvfSetProtocolParameters = 0x0, pvfPowerICC = 0x0, pvfTransmitToICC = 0x0, pvfICCPresence = 0x0, pvfControl = 0x0}

, psFunctions_v3 = {pvfCreateChannel = 0x0,
pvfCloseChannel = 0x0, pvfGetCapabilities = 0x0, pvfSetCapabilities = 0x0,
pvfSetProtocolParameters = 0x0, pvfPowerICC = 0x0, pvfTransmitToICC = 0x0,
pvfICCPresence = 0x0, pvfControl = 0x0, pvfCreateChannelByName = 0x0}}, vHandle = 0x0,
version = 0, port = 0, slot = 0, hLockId = 0, LockCount = 0, contexts = 0, pFeeds = 0x0,
pMutex = 0x0, powerState = 3, powerState_lock = {_data = {_lock = 0, __count = 0,
__owner = 0, __nusers = 0, __kind = -1, __spins = 0, __elision = 0, __list = {
__prev = 0x0, __next = 0x0}},
__size = '\000' <repeats 16 times>, "\377\377\377\377", '\000' <repeats 19 times>,
_align = 0}, reference = 0, reference_lock = {data = {_lock = 0, __count = 0,
_owner = 0, __nusers = 0, __kind = 0, __spins = 0, __elision = 0, __list = {_prev = 0x0,
__next = 0x0}}, __size = '\000' <repeats 39 times>, __align = 0},
readerState = 0x55dd83840480 <readerStates>}
(gdb) print rContext->mMutex
$2 = (pthread_mutex_t *) 0x0
(gdb) print rContext
$3 = (READER_CONTEXT *) 0x55dd83a2c420

Version-Release number of selected component (if applicable):
pcsc-lite-1.9.5-1.el8.x86_64

How reproducible:
Just the once on this machine. I see another machine with a pcscd crash, but haven't been able to look at the core yet.

Seems to have happened shortly after YK re-insertion:

Jan 04 12:04:02 pcscd[7536]: 01000192 eventhandler.c:336:EHStatusHandlerThread() Error communicating to: Yubico Yubikey 4 OTP+U2F+CCID 00 00
Jan 04 12:04:02 pcscd[7536]: 00000070 ccid_usb.c:1312:InterruptRead() libusb_submit_transfer failed: LIBUSB_ERROR_NO_DEVICE
Jan 04 12:04:02 pcscd[7536]: 00400178 ccid_usb.c:849:WriteUSB() write failed (4/4): -4 LIBUSB_ERROR_NO_DEVICE
Jan 04 12:04:02 pcscd[7536]: 00000026 ifdwrapper.c:364:IFDStatusICC() Card not transacted: 617
Jan 04 12:04:03 kernel: usb 4-1: new full-speed USB device number 6 using uhci_hcd
Jan 04 12:04:03 kernel: usb 4-1: New USB device found, idVendor=1050, idProduct=0407, bcdDevice= 4.37
Jan 04 12:04:03 kernel: usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Jan 04 12:04:03 kernel: usb 4-1: Product: Yubikey 4 OTP+U2F+CCID
Jan 04 12:04:03 kernel: usb 4-1: Manufacturer: Yubico
Jan 04 12:04:03 kernel: input: Yubico Yubikey 4 OTP+U2F+CCID as /devices/pci0000:00/0000:00:1a.1/usb4/4-1/4-1:1.0/0003:1050:0407.000C/input/input23
Jan 04 12:04:03 kernel: hid-generic 0003:1050:0407.000C: input,hidraw3: USB HID v1.10 Keyboard [Yubico Yubikey 4 OTP+U2F+CCID] on usb-0000:00:1a.1-1/input0
Jan 04 12:04:03 kernel: hid-generic 0003:1050:0407.000D: hiddev97,hidraw4: USB HID v1.10 Device [Yubico Yubikey 4 OTP+U2F+CCID] on usb-0000:00:1a.1-1/input1
Jan 04 12:04:03 pcscd[7536]: 00907014 ifdhandler.c:150:CreateChannelByNameOrChannel() failed
Jan 04 12:04:03 pcscd[7536]: 00002325 ifdhandler.c:150:CreateChannelByNameOrChannel() failed
Jan 04 12:04:03 pcscd[7536]: 00090818 eventhandler.c:336:EHStatusHandlerThread() Error communicating to: Yubico Yubikey 4 OTP+U2F+CCID 00 00
Jan 04 12:04:03 pcscd[7536]: 00000049 ccid_usb.c:1312:InterruptRead() libusb_submit_transfer failed: LIBUSB_ERROR_NO_DEVICE
Jan 04 12:04:04 pcscd[7536]: 00400210 ccid_usb.c:849:WriteUSB() write failed (4/4): -4 LIBUSB_ERROR_NO_DEVICE
Jan 04 12:04:04 pcscd[7536]: 00029618 ifdwrapper.c:180:IFDCloseIFD() Locking failed
Jan 04 12:04:04 ssh-pkcs11-helper[250686]: error: C_Sign failed: 224
Jan 04 12:04:04 kernel: pcscd[851798]: segfault at 10 ip 00007fd01b699a84 sp 00007fd0067fb9e8 error 4 in libpthread-2.28.so[7fd01b68f000+1b000]
Jan 04 12:04:04 kernel: Code: 02 a9 00 00 ba b1 01 00 00 48 8d 35 8b a7 00 00 48 8d 3d 3f a8 00 00 e8 ea b9 ff ff 8b 03 e9 45 fa ff ff 0f 1f 00 f3 0f 1e fa <8b> 47 10 89 c2 81 e2 7f 01 00 00 90 83 e0 7c 0f 85 a7 00 00 00 48
Jan 04 12:04:04 abrt-hook-ccpp[851817]: Process 7536 (pcscd) of user 0 killed by SIGSEGV - dumping core