Thread 6 (Thread 0x7fa1689f76c0 (LWP 15456)):
#0  0x00007fa16b8819df in __GI___poll (fds=0x7fa154000b90, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        sc_ret = -516
        sc_cancel_oldtype = 0
#1  0x00007fa16bb2317f in g_main_context_poll (priority=<optimized out>, n_fds=2, fds=0x7fa154000b90, timeout=<optimized out>, context=0x7fa1600057f0) at ../glib/glib/gmain.c:4584
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7fa16bad3800 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = <optimized out>
        fds = 0x7fa154000b90
        begin_time_nsec = 2638971966438
#2  g_main_context_iterate.constprop.0 (context=0x7fa1600057f0, block=1, dispatch=1, self=<optimized out>) at ../glib/glib/gmain.c:4271
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = <optimized out>
        fds = 0x7fa154000b90
        begin_time_nsec = 2638971966438
#3  0x00007fa16bac5c7f in g_main_loop_run (loop=0x7fa160005920) at ../glib/glib/gmain.c:4479
        __func__ = "g_main_loop_run"
#4  0x00007fa16b6b7d5c in gdbus_shared_thread_func (user_data=0x7fa1600057c0) at ../glib/gio/gdbusprivate.c:284
        data = 0x7fa1600057c0
#5  0x00007fa16baf3315 in g_thread_proxy (data=0x56103a636e00) at ../glib/glib/gthread.c:831
        thread = 0x56103a636e00
        __func__ = "g_thread_proxy"
#6  0x00007fa16b80cbb5 in start_thread (arg=<optimized out>) at pthread_create.c:444
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140331270064368, -3996951563513484967, -120, 11, 140331230132880, 140331213352960, 4018662790126774617, 4018669624319420761}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#7  0x00007fa16b88ecb4 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 5 (Thread 0x7fa1699f96c0 (LWP 15454)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fa16bb1c7b5 in g_cond_wait (cond=0x56103a5b7bc8, mutex=0x56103a5b7bc0) at ../glib/glib/gthread-posix.c:1475
        sampled = 1
#2  0x00007fa16ba90fb4 in g_async_queue_pop_intern_unlocked (queue=0x56103a5b7bc0, wait=1, end_time=-1) at ../glib/glib/gasyncqueue.c:425
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007fa16baf7f9e in g_thread_pool_spawn_thread (data=<optimized out>) at ../glib/glib/gthreadpool.c:311
        spawn_thread_data = <optimized out>
        thread = 0x0
        error = 0x0
        prgname = <optimized out>
        name = "pool-wireplumbe"
#4  0x00007fa16baf3315 in g_thread_proxy (data=0x56103a5b95a0) at ../glib/glib/gthread.c:831
        thread = 0x56103a5b95a0
        __func__ = "g_thread_proxy"
#5  0x00007fa16b80cbb5 in start_thread (arg=<optimized out>) at pthread_create.c:444
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140331270064368, -3996951563513484967, -120, 11, 140723868327488, 140331230138368, 4018664996666222937, 4018669624319420761}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#6  0x00007fa16b88ecb4 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 4 (Thread 0x7fa16a33d6c0 (LWP 15453)):
#0  0x00007fa16b8819df in __GI___poll (fds=0x56103a546300, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        sc_ret = -516
        sc_cancel_oldtype = 0
#1  0x00007fa16bb2317f in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x56103a546300, timeout=<optimized out>, context=0x56103a598c40) at ../glib/glib/gmain.c:4584
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7fa16bad3800 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x56103a546300
        begin_time_nsec = 2212269919125
#2  g_main_context_iterate.constprop.0 (context=0x56103a598c40, block=1, dispatch=1, self=<optimized out>) at ../glib/glib/gmain.c:4271
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x56103a546300
        begin_time_nsec = 2212269919125
#3  0x00007fa16bac51a2 in g_main_context_iteration (context=0x56103a598c40, may_block=may_block@entry=1) at ../glib/glib/gmain.c:4343
        retval = <optimized out>
#4  0x00007fa16bac51f2 in glib_worker_main (data=<optimized out>) at ../glib/glib/gmain.c:6455
#5  0x00007fa16baf3315 in g_thread_proxy (data=0x56103a598da0) at ../glib/glib/gthread.c:831
        thread = 0x56103a598da0
        __func__ = "g_thread_proxy"
#6  0x00007fa16b80cbb5 in start_thread (arg=<optimized out>) at pthread_create.c:444
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140331270064368, -3996951563513484967, -120, 11, 140723868328992, 140331239854080, 4018668671010744665, 4018669624319420761}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#7  0x00007fa16b88ecb4 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 3 (Thread 0x7fa16ab3e6c0 (LWP 15451)):
#0  0x00007fa16b88f1b6 in epoll_wait (epfd=7, events=events@entry=0x7fa16ab3dab0, maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
        sc_ret = -4
        sc_cancel_oldtype = 0
#1  0x00007fa16b45d8e9 in impl_pollfd_wait (object=<optimized out>, pfd=<optimized out>, ev=0x7fa16ab3dc80, n_ev=<optimized out>, timeout=<optimized out>) at ../pipewire/spa/plugins/support/system.c:137
        ep = 0x7fa16ab3dab0
        i = <optimized out>
        nfds = <optimized out>
#2  0x00007fa16b44e06b in loop_iterate (object=0x56103a552868, timeout=-1) at ../pipewire/spa/plugins/support/loop.c:409
        _f = <optimized out>
        _res = -95
        _o = <optimized out>
        impl = 0x56103a552868
        ep = {{events = 1, data = 0x56103a55a990}, {events = 0, data = 0x0} <repeats 31 times>}
        e = <optimized out>
        i = <optimized out>
        nfds = <optimized out>
        __func__ = "loop_iterate"
#3  0x00007fa16b9d33d7 in do_loop (user_data=0x56103a552700) at ../pipewire/src/pipewire/data-loop.c:61
        _f = <optimized out>
        _res = -95
        _o = <optimized out>
        __clframe = {__cancel_routine = <optimized out>, __cancel_arg = <optimized out>, __do_it = <optimized out>, __cancel_type = <optimized out>}
        this = 0x56103a552700
        res = <optimized out>
        __func__ = "do_loop"
#4  0x00007fa16b80cbb5 in start_thread (arg=<optimized out>) at pthread_create.c:444
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140331270064368, -3996951563513484967, -120, 11, 140723868327952, 140331248246784, 4018667572035987801, 4018669624319420761}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#5  0x00007fa16b88ecb4 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 2 (Thread 0x7fa16b46a080 (LWP 15449)):
#0  __strchr_avx2 () at ../sysdeps/x86_64/multiarch/strchr-avx2.S:69
#1  0x00007fa16804ef7d in extract_first_word (p=0x7ffcd42edcc8, ret=0x7ffcd42edcd0, separators=0x7fa16806425d " \t\n\r", flags=<optimized out>) at ../systemd-stable/src/basic/extract-word.c:155
        s = 0x56103ad9acb0 "/dev/v4"
        sz = 7
        backslash = false
        c = <optimized out>
#2  0x00007fa16804b1c8 in device_amend (device=device@entry=0x56103a70f500, key=key@entry=0x7ffcd42ee14d "DEVLINKS", value=value@entry=0x7ffcd42ee156 "/dev/v4l/by-id/usb-J31DCG1MA_Integrated_Camera-video-index0 /dev/v4l/by-path/pci-0000:00:14.0-usb-0:12:1.0-video-index0") at ../systemd-stable/src/libsystemd/sd-device/device-private.c:335
        word = 0x0
        p = 0x7ffcd42ee15d "l/by-id/usb-J31DCG1MA_Integrated_Camera-video-index0 /dev/v4l/by-path/pci-0000:00:14.0-usb-0:12:1.0-video-index0"
        r = <optimized out>
        __func__ = "device_amend"
#3  0x00007fa16804be96 in device_append (device=device@entry=0x56103a70f500, key=key@entry=0x7ffcd42ee14d "DEVLINKS", _major=_major@entry=0x7ffcd42ee2d8, _minor=_minor@entry=0x7ffcd42ee2f0) at ../systemd-stable/src/libsystemd/sd-device/device-private.c:401
        major = 0x0
        minor = 0x0
        value = 0x7ffcd42ee156 "/dev/v4l/by-id/usb-J31DCG1MA_Integrated_Camera-video-index0 /dev/v4l/by-path/pci-0000:00:14.0-usb-0:12:1.0-video-index0"
        r = <optimized out>
        __func__ = "device_append"
#4  0x00007fa16804ce49 in device_new_from_nulstr (len=<optimized out>, nulstr=<optimized out>, ret=<synthetic pointer>) at ../systemd-stable/src/libsystemd/sd-device/device-private.c:503
        key = 0x7ffcd42ee14d "DEVLINKS"
        end = <optimized out>
        i = <optimized out>
        device = 0x56103a70f500
        major = 0x7ffcd42ede72 "81"
        minor = 0x7ffcd42ede7b "0"
        r = <optimized out>
        device = 0x0
        buf_alloc = 0x0
        message = {nlh = <optimized out>, nulstr = <optimized out>, buf = <optimized out>}
        iov = {iov_base = 0x7ffcd42edd80, iov_len = 1239}
        control = {cmsghdr = {cmsg_len = 28, cmsg_level = 1, cmsg_type = 2, __cmsg_data = 0x7ffcd42ee350 "HH"}, buf = "\034\000\000\000\000\000\000\000\001\000\000\000\002\000\000\000HH", '\000' <repeats 13 times>, align_check = "\034"}
        snl = {sa = {sa_family = 16, sa_data = "\000\000\3508\214\315\002\000\000\000\000\000\000"}, storage = {ss_family = 16, __ss_padding = "\000\000\3508\214\315\002", '\000' <repeats 110 times>, __ss_align = 0}, in = {sin_family = 16, sin_port = 0, sin_addr = {s_addr = 3448518888}, sin_zero = "\002\000\000\000\000\000\000"}, in6 = {sin6_family = 16, sin6_port = 0, sin6_flowinfo = 3448518888, sin6_addr = {__in6_u = {__u6_addr8 = "\002", '\000' <repeats 14 times>, __u6_addr16 = {2, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {2, 0, 0, 0}}}, sin6_scope_id = 0}, un = {sun_family = 16, sun_path = "\000\000\3508\214\315\002", '\000' <repeats 100 times>}, nl = {nl_family = 16, nl_pad = 0, nl_pid = 3448518888, nl_groups = 2}, ll = {sll_family = 16, sll_protocol = 0, sll_ifindex = -846448408, sll_hatype = 2, sll_pkttype = 0 '\000', sll_halen = 0 '\000', sll_addr = "\000\000\000\000\000\000\000"}, vm = {svm_family = 16, svm_reserved1 = 0, svm_port = 3448518888, svm_cid = 2, svm_flags = 0 '\000', svm_zero = "\000\000"}, ll_buffer = "\020\000\000\000\3508\214\315\002", '\000' <repeats 22 times>, un_buffer = "\020\000\000\000\3508\214\315\002", '\000' <repeats 101 times>}
        smsg = {msg_name = 0x7ffcd42ee3e0, msg_namelen = 12, msg_iov = 0x7ffcd42ee2e0, msg_iovlen = 1, msg_control = 0x7ffcd42ee340, msg_controllen = 32, msg_flags = 0}
        cmsg = <optimized out>
        cred = <optimized out>
        offset = 40
        n = <optimized out>
        is_initialized = <optimized out>
        r = <optimized out>
        __func__ = "device_monitor_receive_device"
#5  device_monitor_receive_device (m=0x56103a659c40, ret=ret@entry=0x7ffcd42ee4b0) at ../systemd-stable/src/libsystemd/sd-device/device-monitor.c:602
        device = 0x0
        buf_alloc = 0x0
        message = {nlh = <optimized out>, nulstr = <optimized out>, buf = <optimized out>}
        iov = {iov_base = 0x7ffcd42edd80, iov_len = 1239}
        control = {cmsghdr = {cmsg_len = 28, cmsg_level = 1, cmsg_type = 2, __cmsg_data = 0x7ffcd42ee350 "HH"}, buf = "\034\000\000\000\000\000\000\000\001\000\000\000\002\000\000\000HH", '\000' <repeats 13 times>, align_check = "\034"}
        snl = {sa = {sa_family = 16, sa_data = "\000\000\3508\214\315\002\000\000\000\000\000\000"}, storage = {ss_family = 16, __ss_padding = "\000\000\3508\214\315\002", '\000' <repeats 110 times>, __ss_align = 0}, in = {sin_family = 16, sin_port = 0, sin_addr = {s_addr = 3448518888}, sin_zero = "\002\000\000\000\000\000\000"}, in6 = {sin6_family = 16, sin6_port = 0, sin6_flowinfo = 3448518888, sin6_addr = {__in6_u = {__u6_addr8 = "\002", '\000' <repeats 14 times>, __u6_addr16 = {2, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {2, 0, 0, 0}}}, sin6_scope_id = 0}, un = {sun_family = 16, sun_path = "\000\000\3508\214\315\002", '\000' <repeats 100 times>}, nl = {nl_family = 16, nl_pad = 0, nl_pid = 3448518888, nl_groups = 2}, ll = {sll_family = 16, sll_protocol = 0, sll_ifindex = -846448408, sll_hatype = 2, sll_pkttype = 0 '\000', sll_halen = 0 '\000', sll_addr = "\000\000\000\000\000\000\000"}, vm = {svm_family = 16, svm_reserved1 = 0, svm_port = 3448518888, svm_cid = 2, svm_flags = 0 '\000', svm_zero = "\000\000"}, ll_buffer = "\020\000\000\000\3508\214\315\002", '\000' <repeats 22 times>, un_buffer = "\020\000\000\000\3508\214\315\002", '\000' <repeats 101 times>}
        smsg = {msg_name = 0x7ffcd42ee3e0, msg_namelen = 12, msg_iov = 0x7ffcd42ee2e0, msg_iovlen = 1, msg_control = 0x7ffcd42ee340, msg_controllen = 32, msg_flags = 0}
        cmsg = <optimized out>
        cred = <optimized out>
        offset = 40
        n = <optimized out>
        is_initialized = <optimized out>
        r = <optimized out>
        __func__ = "device_monitor_receive_device"
#6  0x00007fa16804da6f in udev_monitor_receive_sd_device (ret=<optimized out>, udev_monitor=<optimized out>) at ../systemd-stable/src/libudev/libudev-monitor.c:202
        r = <optimized out>
        device = 0x0
        r = <optimized out>
        __func__ = "udev_monitor_receive_device"
#7  udev_monitor_receive_device (udev_monitor=0x56103a7526f0) at ../systemd-stable/src/libudev/libudev-monitor.c:247
        device = 0x0
        r = <optimized out>
        __func__ = "udev_monitor_receive_device"
#8  0x00007fa1681b99da in impl_on_fd_events (source=<optimized out>) at ../pipewire/spa/plugins/v4l2/v4l2-udev.c:477
        this = 0x56103a6cbcb8
        dev = <optimized out>
        action = <optimized out>
        __func__ = "impl_on_fd_events"
#9  0x00007fa16b44e1b7 in loop_iterate (object=<optimized out>, timeout=<optimized out>) at ../pipewire/spa/plugins/support/loop.c:439
        s = <optimized out>
        __clframe = {__cancel_routine = <optimized out>, __cancel_arg = <synthetic pointer>, __do_it = 1, __cancel_type = <optimized out>}
        impl = <optimized out>
        ep = {{events = 1, data = 0x56103a6cc360}, {events = 1, data = 0x56103a5b72c0}, {events = 2147549184, data = 0x7ffcd42ee688}, {events = 987911984, data = 0x20e4f1f31b32b00}, {events = 4097, data = 0xffffffffffffff88}, {events = 11, data = 0x56103a6d50d0}, {events = 2147549185, data = 0x20e4f1f31b32b00}, {events = 1, data = 0x56103a700c30}, {events = 0, data = 0x0}, {events = 0, data = 0x20e4f1f31b32b00}, {events = 980421696, data = 0x7ffcd42ee680}, {events = 1806889865, data = 0x7fa16bb270be}, {events = 1, data = 0x56103a599000}, {events = 1807292319, data = 0x7fa16bb24c1d <sysprof_collector_mark_vprintf+61>}, {events = 1807292319, data = 0x26f03593ba3}, {events = 27, data = 0x26f0358ecf0}, {events = 10771, data = 0x7fa16b81ce63 <__GI___libc_free+115>}, {events = 2147549186, data = 0x20e4f1f31b32b00}, {events = 988587840, data = 0x56103a5463e0}, {events = 3559843776, data = 0x7ffcd42ee7a8}, {events = 1, data = 0x56103a599000}, {events = 0, data = 0x7fa16bb1d411 <g_trace_mark.constprop.0+145>}, {events = 40, data = 0x7ffcd42ee760}, {events = 3559843488, data = 0x20e4f1f31b32b00}, {events = 56171813, data = 0x7fa16bb9176f}, {events = 1807292307, data = 0x7fa16bb24c1d <sysprof_collector_mark_vprintf+61>}, {events = 0, data = 0x7fa16bb91423}, {events = 5128, data = 0x20e4f1f31b32b00}, {events = 978616148, data = 0xffffffffffffff88}, {events = 11, data = 0x7fa16b87da24 <__GI___libc_write+100>}, {events = 978615552, data = 0x8}, {events = 3559843632, data = 0x8}}
        e = <optimized out>
        i = 0
        nfds = 1
        __func__ = "loop_iterate"
#10 0x00007fa16bc38723 in wp_loop_source_dispatch (s=0x56103a547d00, callback=<optimized out>, user_data=<optimized out>) at ../wireplumber/lib/wp/core.c:42
        _f = <optimized out>
        _res = -95
        _o = <optimized out>
        result = <optimized out>
        __func__ = "wp_loop_source_dispatch"
#11 0x00007fa16bac653b in g_main_dispatch (context=0x56103a5463e0) at ../glib/glib/gmain.c:3460
        dispatch = 0x7fa16bc38680 <wp_loop_source_dispatch>
        prev_source = 0x0
        begin_time_nsec = 2675820806026
        was_in_call = 0
        user_data = 0x0
        callback = 0x0
        cb_funcs = 0x0
        cb_data = 0x0
        need_destroy = <optimized out>
        source = 0x56103a547d00
        current = 0x56103a599980
        i = 0
#12 g_main_context_dispatch (context=0x56103a5463e0) at ../glib/glib/gmain.c:4200
#13 0x00007fa16bb23219 in g_main_context_iterate.constprop.0 (context=0x56103a5463e0, block=1, dispatch=1, self=<optimized out>) at ../glib/glib/gmain.c:4276
        max_priority = 2147483647
        timeout = -1
        some_ready = 1
        nfds = 4
        allocated_nfds = <optimized out>
        fds = <optimized out>
        begin_time_nsec = 2675820802417
#14 0x00007fa16bac5c7f in g_main_loop_run (loop=0x56103a5465c0) at ../glib/glib/gmain.c:4479
        __func__ = "g_main_loop_run"
#15 0x0000561039d782fd in main (argc=<optimized out>, argv=<optimized out>) at ../wireplumber/src/main.c:482
        d = {core = 0x56103a547b20 [WpCore], loop = 0x56103a5465c0, exit_code = 0}
        context = 0x56103a5450a0
        error = 0x0
        properties = 0x0
        config_file_path = 0x56103a546290 "/usr/share/wireplumber/wireplumber.conf"

Thread 1 (Thread 0x7fa15b0906c0 (LWP 15457)):
#0  std::_Rb_tree<unsigned long, std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > >, std::_Select1st<std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > > >, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > > > >::_S_left(std::_Rb_tree_node_base*) (__x=<optimized out>) at /usr/include/c++/12.2.1/bits/stl_function.h:407
        __i = Python Exception <class 'gdb.error'>: value has been optimized out

        entity = <optimized out>
        __for_range = <optimized out>
        it = {first = 20736, second = 0x7fa15001b9e0}
        deviceNode = "/dev/video0"
        deps = 0x7fa15001b9e0
#1  std::_Rb_tree<unsigned long, std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > >, std::_Select1st<std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > > >, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > > > >::_M_lower_bound(std::_Rb_tree_node<std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > > >*, std::_Rb_tree_node_base*, unsigned long const&) (__k=@0x7fa15b08eff8: 20736, __y=0x7fa15001b9f0, __x=0x3a32312d332f3231, this=0x7fa15001b9e8) at /usr/include/c++/12.2.1/bits/stl_tree.h:1952
        __i = Python Exception <class 'gdb.error'>: value has been optimized out

        entity = <optimized out>
        __for_range = <optimized out>
        it = {first = 20736, second = 0x7fa15001b9e0}
        deviceNode = "/dev/video0"
        deps = 0x7fa15001b9e0
#2  std::_Rb_tree<unsigned long, std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > >, std::_Select1st<std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > > >, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > > > >::lower_bound(unsigned long const&) (__k=@0x7fa15b08eff8: 20736, this=0x7fa15001b9e8) at /usr/include/c++/12.2.1/bits/stl_tree.h:1270
        __i = Python Exception <class 'gdb.error'>: value has been optimized out

        entity = <optimized out>
        __for_range = <optimized out>
        it = {first = 20736, second = 0x7fa15001b9e0}
        deviceNode = "/dev/video0"
        deps = 0x7fa15001b9e0
#3  std::map<unsigned long, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> >, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > > > >::lower_bound(unsigned long const&) (__x=@0x7fa15b08eff8: 20736, this=0x7fa15001b9e8) at /usr/include/c++/12.2.1/bits/stl_map.h:1307
        __i = Python Exception <class 'gdb.error'>: value has been optimized out

        entity = <optimized out>
        __for_range = <optimized out>
        it = {first = 20736, second = 0x7fa15001b9e0}
        deviceNode = "/dev/video0"
        deps = 0x7fa15001b9e0
#4  std::map<unsigned long, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> >, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, std::__cxx11::list<libcamera::MediaEntity*, std::allocator<libcamera::MediaEntity*> > > > >::operator[](unsigned long const&) (__k=@0x7fa15b08eff8: 20736, this=0x7fa15001b9e8) at /usr/include/c++/12.2.1/bits/stl_map.h:507
        __i = Python Exception <class 'gdb.error'>: value has been optimized out

        entity = <optimized out>
        __for_range = <optimized out>
        it = {first = 20736, second = 0x7fa15001b9e0}
        deviceNode = "/dev/video0"
        deps = 0x7fa15001b9e0
#5  libcamera::DeviceEnumeratorUdev::addV4L2Device(unsigned long) (this=this@entry=0x7fa150000e10, devnum=<optimized out>) at ../libcamera/src/libcamera/device_enumerator_udev.cpp:306
        entity = <optimized out>
        __for_range = <optimized out>
        it = {first = 20736, second = 0x7fa15001b9e0}
        deviceNode = "/dev/video0"
        deps = 0x7fa15001b9e0
#6  0x00007fa168164e58 in libcamera::DeviceEnumeratorUdev::addUdevDevice(udev_device*) (this=this@entry=0x7fa150000e10, dev=dev@entry=0x7fa150011e90) at ../libcamera/src/libcamera/device_enumerator_udev.cpp:113
        subsystem = 0x7fa150001580 "video4linux"
#7  0x00007fa168165cb1 in libcamera::DeviceEnumeratorUdev::udevNotify() (this=0x7fa150000e10) at ../libcamera/src/libcamera/device_enumerator_udev.cpp:340
        dev = 0x7fa150011e90
        action = "add"
        deviceNode = "/dev/video0"
#8  0x00007fa1680857cf in libcamera::Signal<>::emit() (this=<optimized out>) at ../libcamera/include/libcamera/base/signal.h:153
        slot = 0x7fa150016d70
        __for_range = @0x7fa15b08f7e0: std::__cxx11::list = {[0] = 0x7fa150016d70}
        notifier = <optimized out>
        event = @0x7fa16808b560: {type = libcamera::EventNotifier::Read, events = 1}
        __for_begin = 0x7fa16808b560 <libcamera::EventDispatcherPoll::processNotifiers(std::vector<pollfd, std::allocator<pollfd> > const&)::events>
        iter = Python Exception <class 'gdb.error'>: value has been optimized out

        pfd = @0x7fa150008570: {fd = 30, events = 1, revents = 1}
        __for_range = Python Exception <class 'gdb.MemoryError'>: Cannot access memory at address 0x7fa600000001
#9  libcamera::EventDispatcherPoll::processNotifiers(std::vector<pollfd, std::allocator<pollfd> > const&) (this=this@entry=0x7fa1500012b0, pollfds=std::vector of length 1, capacity 2 = {...}) at ../libcamera/src/libcamera/base/event_dispatcher_poll.cpp:281
        notifier = <optimized out>
        event = @0x7fa16808b560: {type = libcamera::EventNotifier::Read, events = 1}
        __for_begin = 0x7fa16808b560 <libcamera::EventDispatcherPoll::processNotifiers(std::vector<pollfd, std::allocator<pollfd> > const&)::events>
        iter = Python Exception <class 'gdb.error'>: value has been optimized out

        pfd = @0x7fa150008570: {fd = 30, events = 1, revents = 1}
        __for_range = std::vector of length 1, capacity 2 = {{fd = 30, events = 1, revents = 1}}
        events = {{type = libcamera::EventNotifier::Read, events = 1}, {type = libcamera::EventNotifier::Write, events = 4}, {type = libcamera::EventNotifier::Exception, events = 2}}
#10 0x00007fa168085dbc in libcamera::EventDispatcherPoll::processEvents() (this=0x7fa1500012b0) at ../libcamera/src/libcamera/base/event_dispatcher_poll.cpp:169
        ret = <optimized out>
        pollfds = std::vector of length 1, capacity 2 = {{fd = 30, events = 1, revents = 1}}
#11 0x00007fa1680839ff in libcamera::Thread::exec() (this=this@entry=0x56103a7274d0) at ../libcamera/src/libcamera/base/thread.cpp:341
        locker = {lock_ = {_M_device = 0x56103a7300d0, _M_owns = false}}
        dispatcher = 0x7fa1500012b0
#12 0x00007fa1680fa334 in libcamera::CameraManager::Private::run() (this=0x56103a7274c0) at ../libcamera/src/libcamera/camera_manager.cpp:122
        ret = 0
#13 0x00007fa15bcd72c3 in std::execute_native_thread_routine(void*) (__p=0x56103a6413c0) at /usr/src/debug/gcc/gcc/libstdc++-v3/src/c++11/thread.cc:82
#14 0x00007fa16b80cbb5 in start_thread (arg=<optimized out>) at pthread_create.c:444
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140331270064368, -3996951563513484967, -120, 11, 140723868328320, 140330985390080, 4018705839120853337, 4018669624319420761}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#15 0x00007fa16b88ecb4 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100