I ran gdb again, this time with debug symbols installed and using the
cyberjack driver built from sources. This gives a little more detail
about where the actual problem is:
(gdb) backtrace
#0 0x00007ffff720ff79 in __GI_raise (sig=sig@entry=6)
at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1 0x00007ffff7213388 in __GI_abort () at abort.c:89
#2 0x00007ffff724d1d4 in __libc_message (do_abort=do_abort@entry=1,
fmt=fmt@entry=0x7ffff735ba10 "*** Error in `%s': %s: 0x%s ***\n")
at ../sysdeps/posix/libc_fatal.c:175
#3 0x00007ffff72594ae in malloc_printerr (ptr=<optimized out>,
str=0x7ffff735bb60 "free(): corrupted unsorted chunks", action=1)
at malloc.c:4996
#4 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0)
at malloc.c:3840
#5 0x00007ffff5f42744 in ausb_close (ah=0x7ffff0006f70) at ausb.c:178
#6 0x00007ffff5f3e8d6 in CUSBUnix::Close (this=0x7ffff0004ed0)
at USBUnix.cpp:395
#7 0x00007ffff5f3ec2e in CUSBUnix::Write (this=0x7ffff0004ed0,
Message=0x7ffff6953140, len=14) at USBUnix.cpp:178
#8 0x00007ffff5f2c5b5 in CBaseReader::Write (this=this@entry=0x7ffff00078c0,
Message=Message@entry=0x7ffff6953140, len=14) at BaseReader.cpp:427
#9 0x00007ffff5f2d211 in CCCIDReader::Transfer (
this=this@entry=0x7ffff00078c0, Message=Message@entry=0x7ffff6953140,
Response=Response@entry=0x7ffff6954550) at CCIDReader.cpp:145
#10 0x00007ffff5f34683 in CEC30Reader::IfdPower (
this=this@entry=0x7ffff00078c0, Mode=Mode@entry=0, ATR=0x0,
ATR_Length=0x0, Timeout=0) at EC30Reader.cpp:1045
#11 0x00007ffff5f3c464 in CRFSReader::IfdPower (this=0x7ffff00078c0, Mode=0,
ATR=<optimized out>, ATR_Length=<optimized out>, Timeout=<optimized out>)
at RFSReader.cpp:51
#12 0x00007ffff5f3cd41 in CReader::Disonnect (this=0x7ffff0004d50)
at Reader.cpp:185
#13 0x00007ffff5f2990a in IFDHandler::closeChannel (
this=this@entry=0x7ffff61554c0 <rsct_ifd_handler>, Lun=Lun@entry=0)
at ifd.cpp:639
#14 0x00007ffff5f29ae9 in IFDHCloseChannel (Lun=0) at ifd.cpp:1502
#15 0x00000000004069ba in IFDCloseIFD (rContext=rContext@entry=0x620320)
at ifdwrapper.c:169
#16 0x000000000040857d in RFUnInitializeReader (
rContext=rContext@entry=0x620320) at readerfactory.c:1044
#17 0x00000000004087cf in removeReader (sContext=0x620320)
at readerfactory.c:559
#18 _UnrefReader (sReader=0x620320) at readerfactory.c:104
#19 0x0000000000408add in _UnrefReader (sReader=<optimized out>)
at readerfactory.c:96
#20 RFRemoveReader (
readerName=0x7ffff00026f0 "REINER SCT cyberJack RFID standard
(5372633771)", port=port@entry=2097152) at readerfactory.c:535
#21 0x000000000040e47f in HPRescanUsbBus (udev=udev@entry=0x61e240)
at hotplug_libudev.c:522
#22 0x000000000040e781 in HPEstablishUSBNotifications (udev=0x61e240)
at hotplug_libudev.c:595
#23 0x00007ffff75a7182 in start_thread (arg=0x7ffff6956700)
at pthread_create.c:312
#24 0x00007ffff72d430d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
from ausb_close (ausb.c:178) I followed the source further into the
ausb[13]1?.c files where
I believe the "free" that causes the exception is for example at ausb3.c:306.
The ausb_close
implementations in all 4 files look similar, with the difference that ausb1.c
and ausb3.c call
usb_close and ausb11 and ausb31 call libusb_close.
Cheers,
Karsten
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https://bugs.launchpad.net/bugs/1323795
Title:
pcscd crashes when removing usb chipcard reader
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