SIGSEV reported by vhnvn on gitlab.freedesktop.org

[ericlinagora]

From the report here:

Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x000072a26fe16533 in FP_IS_DEVICE (ptr=0x72a44d538df5) at ../libfprint/fp-device.h:32
32      G_DECLARE_DERIVABLE_TYPE (FpDevice, fp_device, FP, DEVICE, GObject)
[Current thread is 1 (Thread 0x72a26c953640 (LWP 315262))]
(gdb) bt
#0  0x000072a26fe16533 in FP_IS_DEVICE (ptr=0x72a44d538df5) at ../libfprint/fp-device.h:32
#1  fp_device_get_driver (device=0x72a44d538df5) at ../libfprint/fp-device.c:614
#2  0x000072a26fe4ac42 in __ssm_call_handler (machine=0x60153c335f50, force_msg=<optimized out>)
at ../libfprint/fpi-ssm.c:252
#3  0x000072a26fe3f4f1 in m_util_fail_if_error_or_next (ssm=<optimized out>, error=<optimized out
>) at ../libfprint/drivers/cs9711/cs9711.c:60
#4  m_scan_state (ssm=0x60153c335f50, ssm@entry=<error reading variable: value has been optimized
 out>, _dev=0x60153c35d690, _dev@entry=<error reading variable: value has been optimized out>)
    at ../libfprint/drivers/cs9711/cs9711.c:332
#5  0x000072a26fe44f40 in timeout_dispatch (source=<optimized out>, gsource_func=<optimized out>,
 user_data=<optimized out>) at ../libfprint/fpi-device.c:336
#6  0x000072a2731e2559 in ??? () at /usr/lib/libglib-2.0.so.0
#7  0x000072a273245157 in ??? () at /usr/lib/libglib-2.0.so.0
#8  0x000072a2731e3287 in g_main_loop_run () at /usr/lib/libglib-2.0.so.0
#9  0x0000601539249932 in main (argc=<optimized out>, argv=<optimized out>) at ../src/main.c:224

(fprintd:589057): fprintd-DEBUG: 20:57:53.779: Finger present 1
(fprintd:589057): fprintd-DEBUG: 20:57:53.779: Finger needed 1
(fprintd:589057): libfprint-image_device-DEBUG: 20:57:53.779: Image device reported finger status: on
(fprintd:589057): libfprint-image_device-DEBUG: 20:57:53.779: Image device internal state change from FPI_IMAGE_DEVICE_STATE_AWAIT_FINGER_ON to FPI_IMAGE_DEVICE_STATE_CAPTURE

(fprintd:589057): libfprint-SSM-CRITICAL **: 20:57:53.779: BUG: (machine->completed): fpi_ssm_next_state() ../libfprint/fpi-ssm.c:456

(fprintd:620928): fprintd-DEBUG: 21:18:10.307: Finger present 0
(fprintd:620928): fprintd-DEBUG: 21:18:10.307: Finger needed 1
(fprintd:620928): libfprint-SSM-DEBUG: 21:18:10.557: [cs9711] M_SCAN_STATE_COUNT entering state 1
(fprintd:620928): libfprint-cs9711-DEBUG: 21:18:10.557: Reading 8000 bytes
(fprintd:620928): libfprint-cs9711-DEBUG: 21:18:10.557:         Skipping buffer print - got 24 by
tes, expected 8000
(fprintd:620928): libfprint-SSM-DEBUG: 21:18:10.557: [cs9711] SSM M_SCAN_STATE_COUNT failed in st
ate 1 with error: expected 8000 bytes but got 24, can't continue
(fprintd:620928): libfprint-SSM-DEBUG: 21:18:10.557: [cs9711] M_SCAN_STATE_COUNT completed with e
rror: expected 8000 bytes but got 24, can't continue