[560.35.03] GTK4 apps background CPU usage with Vulkan renderer (original) (raw)

After leaving the Vulkan backend enabled for a few weeks, I’ve observed several crashes triggered when closing GTK4 apps.

Given the nature of this thread’s issue (vkps updates spinning CPU cycles like crazy) and these vkps update segfaults on closing GTK4 apps, this very much points to some racy condition related to this same issue.

NOTE: If attempting to reproduce this, be aware the crash-on-exit segfault does not occur on each exit, perhaps only as often as 10% of the time…emphasizing raciness.

GDB Backtrace

$  DEBUGINFOD_URLS="https://debuginfod.archlinux.org/" coredumpctl gdb 132232
           PID: 132232 (loupe)
           UID: 1000 (myusername)
           GID: 1000 (myusername)
        Signal: 11 (SEGV)
     Timestamp: Tue 2025-02-18 15:09:13 EST (27s ago)
  Command Line: /usr/bin/loupe --gapplication-service
    Executable: /usr/bin/loupe
 Control Group: /user.slice/user-1000.slice/user@1000.service/app.slice/app-dbus\x2d:1.2\x2dorg.gnome.Loupe.slice/dbus-:1.2-org.gnome.Loupe@13.service
          Unit: user@1000.service
     User Unit: dbus-:1.2-org.gnome.Loupe@13.service
         Slice: user-1000.slice
     Owner UID: 1000 (myusername)
       Boot ID: 005a46f80cb541a39b2f10bfe204e9cd
    Machine ID: b1fa067dbeb84216ab8d4c29c1b78033
      Hostname: archnemisis
       Storage: /var/lib/systemd/coredump/core.loupe.1000.005a46f80cb541a39b2f10bfe204e9cd.132232.1739909353000000.zst (present)
  Size on Disk: 8.1M
       Message: Process 132232 (loupe) of user 1000 dumped core.
               
                Module libgbm.so.1 without build-id.
                Module libgbm.so.1
                Module [dso] without build-id.
                Module [dso] without build-id.
                Stack trace of thread 132284:
                #0  0x000079ab9900e2a0 n/a (n/a + 0x0)
                ELF object binary architecture: AMD x86-64

(gdb) t a a bt full

Thread 11 (Thread 0x79ab751fd6c0 (LWP 132282)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
No locals.
#1  0x000079ac109a8e33 in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=0, a6=a6@entry=4294967295, nr=202) at cancellation.c:49
        result = <optimized out>
        pd = <optimized out>
        ch = <optimized out>
#2  0x000079ac109a94bc in __futex_abstimed_wait_common64 (private=0, futex_word=0x79ab6c000f50, expected=<optimized out>, op=<optimized out>, abstime=0x0, cancel=true) at futex-internal.c:57
No locals.
#3  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x79ab6c000f50, expected=<optimized out>, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
        err = <optimized out>
        clockbit = 256
        op = <optimized out>
#4  0x000079ac109a951f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x79ab6c000f50, expected=<optimized out>, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
No locals.
#5  0x000079ac109abc0e in __pthread_cond_wait_common (cond=0x79ab6c000f30, mutex=0x62c242001dc0, clockid=0, abstime=0x0) at pthread_cond_wait.c:426
        signals = <optimized out>
        g1_start = <optimized out>
        buffer = {__routine = 0x79ac109aba30 <__condvar_cleanup_waiting>, __arg = 0x79ab751fc910, __canceltype = 8, __prev = 0x0}
        cbuffer = {wseq = 216, cond = 0x79ab6c000f30, mutex = 0x62c242001dc0, private = 0}
        err = <optimized out>
        wseq = 216
        g = <optimized out>
        seq = 108
        flags = <optimized out>
        private = 0
        result = 0
        err = <optimized out>
        result = <optimized out>
        wseq = <optimized out>
        g = <optimized out>
        seq = <optimized out>
        flags = <optimized out>
        private = <optimized out>
        signals = <optimized out>
        g1_start = <optimized out>
        buffer = <optimized out>
        cbuffer = <optimized out>
#6  ___pthread_cond_wait (cond=0x79ab6c000f30, mutex=0x62c242001dc0) at pthread_cond_wait.c:458
No locals.
#7  0x000079ab9900e23f in ?? ()
No symbol table info available.
#8  0x000079ab751fc9e8 in ?? ()
No symbol table info available.
#9  0x000062c242001d30 in ?? ()
No symbol table info available.
#10 0x000062c2418b7240 in ?? ()
No symbol table info available.
#11 0x000079ab99010226 in ?? ()
No symbol table info available.
#12 0x000062c242001d00 in ?? ()
No symbol table info available.
#13 0x000062c242001d30 in ?? ()
No symbol table info available.
#14 0x0000000000000001 in ?? ()
No symbol table info available.
#15 0x000062c242001c10 in ?? ()
No symbol table info available.
#16 0x000079ab751fc9e8 in ?? ()
No symbol table info available.
#17 0x000079ab9938c7a8 in ?? ()
No symbol table info available.
#18 0x0000000000000000 in ?? ()
No symbol table info available.

Thread 10 (Thread 0x79ac0a9fc6c0 (LWP 132236)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
No locals.
#1  0x000079ac109a8e33 in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8, a6=a6@entry=0, nr=271) at cancellation.c:49
        result = <optimized out>
        pd = <optimized out>
        ch = <optimized out>
#2  0x000079ac109a8e74 in __syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8, a6=a6@entry=0, nr=271) at cancellation.c:75
        r = <optimized out>
#3  0x000079ac10a23a06 in __GI_ppoll (fds=fds@entry=0x79abf8000b90, nfds=nfds@entry=3, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
        tval = {tv_sec = 108586455435880, tv_nsec = 3}
#4  0x000079ac11afa327 in ppoll (__fds=0x79abf8000b90, __nfds=3, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
No locals.
#5  g_main_context_poll_unlocked (priority=<optimized out>, context=0x62c24119bca0, timeout_usec=<optimized out>, fds=0x79abf8000b90, n_fds=3) at ../glib/glib/gmain.c:4591
        spec = {tv_sec = 97452, tv_nsec = 529216883}
        spec_p = 0x0
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = <optimized out>
        poll_func = <optimized out>
        ret = <optimized out>
        errsv = <optimized out>
        spec = <optimized out>
        spec_p = <optimized out>
        timeout_msec = <optimized out>
#6  g_main_context_iterate_unlocked.isra.0 (context=0x62c24119bca0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4268
        max_priority = 2147483647
        timeout_usec = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = <optimized out>
        fds = 0x79abf8000b90
        begin_time_nsec = 97452529216883
#7  0x000079ac11a98287 in g_main_loop_run (loop=0x62c2411a8a60) at ../glib/glib/gmain.c:4475
        self = <optimized out>
        __func__ = "g_main_loop_run"
#8  0x000079ac11cfdbc4 in gdbus_shared_thread_func (user_data=0x62c2411aa1b0) at ../glib/gio/gdbusprivate.c:284
        data = 0x62c2411aa1b0
#9  0x000079ac11accbe6 in g_thread_proxy (data=0x62c2411a8a80) at ../glib/glib/gthread.c:892
        thread = 0x62c2411a8a80
        __func__ = "g_thread_proxy"
#10 0x000079ac109ac70a in start_thread (arg=<optimized out>) at pthread_create.c:448
        ret = <optimized out>
        pd = <optimized out>
        out = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {133779819579072, 5622317525882339975, 133779819579072, -608, 11, 140730581882560, 5622317525903311495, 5622260395276075655}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#11 0x000079ac10a30aac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.

Thread 9 (Thread 0x79ac0a1fb6c0 (LWP 132237)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x000079ac11ac8be0 in g_cond_wait_impl (cond=0x62c2411ade88, mutex=0x62c2411ade80) at ../glib/glib/gthread-posix.c:1007
        saved_errno = 2
        res = <optimized out>
        sampled = 4
        sampled = <optimized out>
        gaig_temp = <optimized out>
        saved_errno = <optimized out>
        res = <optimized out>
#2  g_cond_wait (cond=0x62c2411ade88, mutex=0x62c2411ade80) at ../glib/glib/gthread.c:1665
--Type <RET> for more, q to quit, c to continue without paging--c
No locals.
#3  0x000079ac11a5f98c in g_async_queue_pop_intern_unlocked (queue=0x62c2411ade80, wait=1, end_time=-1) at ../glib/glib/gasyncqueue.c:375
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#4  0x000079ac11a5f9fd in g_async_queue_pop (queue=queue@entry=0x62c2411ade80) at ../glib/glib/gasyncqueue.c:409
        retval = <optimized out>
        __func__ = "g_async_queue_pop"
#5  0x000079ac1002579c in fc_thread_func (data=0x62c2411ade80) at ../pango/pango/pangofc-fontmap.c:989
        td = <optimized out>
        queue = 0x62c2411ade80
        done = 0
        __func__ = "fc_thread_func"
#6  0x000079ac11accbe6 in g_thread_proxy (data=0x62c2411a8d80) at ../glib/glib/gthread.c:892
        thread = 0x62c2411a8d80
        __func__ = "g_thread_proxy"
#7  0x000079ac109ac70a in start_thread (arg=<optimized out>) at pthread_create.c:448
        ret = <optimized out>
        pd = <optimized out>
        out = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {133779811186368, 5622318624857096839, 133779811186368, -608, 0, 140730581880672, 5622318624878068359, 5622260395276075655}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#8  0x000079ac10a30aac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.

Thread 8 (Thread 0x79ac035fd6c0 (LWP 132736)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x000079ac11ac98f7 in g_cond_wait_until_impl (cond=<optimized out>, mutex=0x62c2411968e0, end_time=<optimized out>) at ../glib/glib/gthread-posix.c:1140
        span_arg = {tv_sec = 0, tv_nsec = 499999736}
        _g_boolean_var_24 = <optimized out>
        span = <optimized out>
        success = <optimized out>
        now = {tv_sec = 97452, tv_nsec = 528817264}
        sampled = 18
        res = <optimized out>
        now = <optimized out>
        span = <optimized out>
        sampled = <optimized out>
        res = <optimized out>
        success = <optimized out>
        __func__ = <optimized out>
        span_arg = <optimized out>
        _g_boolean_var_24 = <optimized out>
#2  g_cond_wait_until (cond=<optimized out>, mutex=0x62c2411968e0, end_time=<optimized out>) at ../glib/glib/gthread.c:1761
No locals.
#3  0x000079ac11a5f955 in g_async_queue_pop_intern_unlocked (queue=0x62c2411968e0, wait=1, end_time=97453028817) at ../glib/glib/gasyncqueue.c:378
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#4  0x000079ac11acfcfb in g_thread_pool_wait_for_new_task (pool=0x62c241196880) at ../glib/glib/gthreadpool.c:260
        task = 0x0
        task = <optimized out>
#5  g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/glib/gthreadpool.c:325
        task = <optimized out>
        pool = 0x62c241196880
#6  0x000079ac11accbe6 in g_thread_proxy (data=0x79ac04003b70) at ../glib/glib/gthread.c:892
        thread = 0x79ac04003b70
        __func__ = "g_thread_proxy"
#7  0x000079ac109ac70a in start_thread (arg=<optimized out>) at pthread_create.c:448
        ret = <optimized out>
        pd = <optimized out>
        out = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {133779697948352, 5622303782523863687, 133779697948352, -608, 0, 133779844753184, 5622303782544835207, 5622260395276075655}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#8  0x000079ac10a30aac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.

Thread 7 (Thread 0x79ab759fe6c0 (LWP 132281)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
No locals.
#1  0x000079ac109a8e33 in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=a3@entry=0, a4=<optimized out>, a5=a5@entry=0, a6=a6@entry=4294967295, nr=202) at cancellation.c:49
        result = <optimized out>
        pd = <optimized out>
        ch = <optimized out>
#2  0x000079ac109a94bc in __futex_abstimed_wait_common64 (private=0, futex_word=0x79ab70000f50, expected=0, op=<optimized out>, abstime=0x79ab759fd9a0, cancel=true) at futex-internal.c:57
No locals.
#3  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x79ab70000f50, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x79ab759fd9a0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
        err = <optimized out>
        clockbit = 256
        op = <optimized out>
#4  0x000079ac109a951f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x79ab70000f50, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x79ab759fd9a0, private=private@entry=0) at futex-internal.c:139
No locals.
#5  0x000079ac109abe11 in __pthread_cond_wait_common (cond=0x79ab70000f30, mutex=0x62c242001aa0, clockid=0, abstime=0x79ab759fd9a0) at pthread_cond_wait.c:426
        signals = 0
        g1_start = <optimized out>
        buffer = {__routine = 0x79ac109aba30 <__condvar_cleanup_waiting>, __arg = 0x79ab759fd930, __canceltype = 24, __prev = 0x0}
        cbuffer = {wseq = 1168, cond = 0x79ab70000f30, mutex = 0x62c242001aa0, private = 0}
        err = <optimized out>
        wseq = <optimized out>
        g = <optimized out>
        seq = 584
        flags = <optimized out>
        private = 0
        result = 0
        err = <optimized out>
        result = <optimized out>
        wseq = <optimized out>
        g = <optimized out>
        seq = <optimized out>
        flags = <optimized out>
        private = <optimized out>
        signals = <optimized out>
        g1_start = <optimized out>
        buffer = <optimized out>
        cbuffer = <optimized out>
#6  ___pthread_cond_timedwait64 (cond=0x79ab70000f30, mutex=0x62c242001aa0, abstime=0x79ab759fd9a0) at pthread_cond_wait.c:483
        flags = <optimized out>
        clockid = 0
#7  0x000079ab9900e2a0 in ?? ()
No symbol table info available.
#8  0x0000000067b4e8e9 in ?? ()
No symbol table info available.
#9  0x000000001814ac40 in ?? ()
No symbol table info available.
#10 0x0000000067b4e8e9 in ?? ()
No symbol table info available.
#11 0x000000000004a388 in ?? ()
No symbol table info available.
#12 0x000062c242001ae0 in ?? ()
No symbol table info available.
#13 0x000062c242001700 in ?? ()
No symbol table info available.
#14 0x0000000000000014 in ?? ()
No symbol table info available.
#15 0x000062c242001868 in ?? ()
No symbol table info available.
#16 0x000062c242001860 in ?? ()
No symbol table info available.
#17 0x000079ab99399869 in ?? ()
No symbol table info available.
#18 0x203a6362696c6720 in ?? ()
No symbol table info available.
#19 0x000062c242001ae0 in ?? ()
No symbol table info available.
#20 0x000079ab99010920 in ?? ()
No symbol table info available.
#21 0x000079ab759fe6c0 in ?? ()
No symbol table info available.
#22 0xfffffffffffffda0 in ?? ()
No symbol table info available.
#23 0x0000000000000002 in ?? ()
No symbol table info available.
#24 0x00007ffe64575510 in ?? ()
No symbol table info available.
#25 0x000079ab990118fa in ?? ()
No symbol table info available.
#26 0x000079ab759fe6c0 in ?? ()
No symbol table info available.
#27 0x000079ab759fecdc in ?? ()
No symbol table info available.
#28 0x000079ab759fdaf0 in ?? ()
No symbol table info available.
#29 0x000079ac109ac70a in start_thread (arg=<optimized out>) at pthread_create.c:448
        ret = <optimized out>
        pd = <optimized out>
        out = <optimized out>
        unwind_buf = <error reading variable unwind_buf (Cannot access memory at address 0x0)>
        not_first_call = <optimized out>
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 6 (Thread 0x79ac0b9fe6c0 (LWP 132234)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
No locals.
#1  0x000079ac109a8e33 in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8, a6=a6@entry=0, nr=271) at cancellation.c:49
        result = <optimized out>
        pd = <optimized out>
        ch = <optimized out>
#2  0x000079ac109a8e74 in __syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8, a6=a6@entry=0, nr=271) at cancellation.c:75
        r = <optimized out>
#3  0x000079ac10a23a06 in __GI_ppoll (fds=fds@entry=0x62c241196fa0, nfds=nfds@entry=2, timeout=<optimized out>, timeout@entry=0x79ac0b9fd990, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
        tval = {tv_sec = 0, tv_nsec = 56444504}
#4  0x000079ac11afa327 in ppoll (__fds=0x62c241196fa0, __nfds=2, __timeout=0x79ac0b9fd990, __ss=0x0) at /usr/include/bits/poll2.h:101
No locals.
#5  g_main_context_poll_unlocked (priority=<optimized out>, context=0x62c241196d00, timeout_usec=<optimized out>, fds=0x62c241196fa0, n_fds=2) at ../glib/glib/gmain.c:4591
        spec = {tv_sec = 0, tv_nsec = 99992000}
        spec_p = 0x79ac0b9fd990
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = <optimized out>
        poll_func = <optimized out>
        ret = <optimized out>
        errsv = <optimized out>
        spec = <optimized out>
        spec_p = <optimized out>
        timeout_msec = <optimized out>
#6  g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x62c241196d00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4268
        max_priority = 2147483647
        timeout_usec = 99992
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = <optimized out>
        fds = 0x62c241196fa0
        begin_time_nsec = 97452507177960
#7  0x000079ac11a96a55 in g_main_context_iteration (context=0x62c241196d00, may_block=may_block@entry=1) at ../glib/glib/gmain.c:4338
        retval = <optimized out>
#8  0x000079ac11a96ab2 in glib_worker_main (data=<optimized out>) at ../glib/glib/gmain.c:6537
No locals.
#9  0x000079ac11accbe6 in g_thread_proxy (data=0x62c241196f40) at ../glib/glib/gthread.c:892
        thread = 0x62c241196f40
        __func__ = "g_thread_proxy"
#10 0x000079ac109ac70a in start_thread (arg=<optimized out>) at pthread_create.c:448
        ret = <optimized out>
        pd = <optimized out>
        out = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {133779836364480, 5622319725979337351, 133779836364480, -608, 17, 140730581879632, 5622319726000308871, 5622260395276075655}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#11 0x000079ac10a30aac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.

Thread 5 (Thread 0x79ac03fff6c0 (LWP 132244)):
#0  0x000062c21dd14701 in rustix::backend::arch::asm::syscall4 () at /usr/src/debug/loupe/build/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustix-0.38.34/src/backend/linux_raw/arch/x86_64.rs:154
        nr = rustix::backend::reg::SyscallNumber {nr: 232, _phantom: core:📑:PhantomData<&()>}
        a0 = rustix::backend::reg::ArgReg<rustix::backend::reg::A0> {raw: 0xf, _phantom: core:📑:PhantomData<(&(), rustix::backend::reg::A0)>}
        a1 = rustix::backend::reg::ArgReg<rustix::backend::reg::A1> {raw: 0x79abd4021700, _phantom: core:📑:PhantomData<(&(), rustix::backend::reg::A1)>}
        a2 = rustix::backend::reg::ArgReg<rustix::backend::reg::A2> {raw: 0x400, _phantom: core:📑:PhantomData<(&(), rustix::backend::reg::A2)>}
        a3 = rustix::backend::reg::ArgReg<rustix::backend::reg::A3> {raw: 0xffffffffffffffff, _phantom: core:📑:PhantomData<(&(), rustix::backend::reg::A3)>}
        r0 = <optimized out>
#1  rustix::backend::event::syscalls::epoll_wait (epfd=..., events=0x79abd4021700, num_events=1024, timeout=<optimized out>) at /usr/src/debug/loupe/build/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustix-0.38.34/src/backend/linux_raw/arch/mod.rs:103
No locals.
#2  rustix::backend::event::epoll::wait<&std::os::fd::owned::OwnedFd> (epoll=0x62c21e2b5778 <async_io::reactor::Reactor::get::REACTOR+632>, event_list=0x62c21e2b5708 <async_io::reactor::Reactor::get::REACTOR+520>, timeout=<optimized out>) at /usr/src/debug/loupe/build/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustix-0.38.34/src/backend/linux_raw/event/epoll.rs:250
        nfds = <optimized out>
        residual = <optimized out>
        val = <optimized out>
#3  polling::epoll::Poller::wait (self=0x62c21e2b5778 <async_io::reactor::Reactor::get::REACTOR+632>, events=0x62c21e2b5708 <async_io::reactor::Reactor::get::REACTOR+520>, timeout=...) at /usr/src/debug/loupe/build/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/polling-3.7.2/src/epoll.rs:214
        timeout_ms = <optimized out>
        timer_fd = 0x62c21e2b5784 <async_io::reactor::Reactor::get::REACTOR+644>
        _enter = tracing::span::Entered {span: 0x79ac03ffe330}
        span = tracing::span::Span {inner: core::option::Option<tracing::span::Inner>::None, meta: core::option::Option<&tracing_core::metadata::Metadata>::None}
        interest = <optimized out>
        span = <error reading variable span (Cannot access memory at address 0x0)>
        meta = <error reading variable meta (Cannot access memory at address 0x0)>
        iter = <optimized out>
        span = <error reading variable span (Cannot access memory at address 0x0)>
        _enter = <optimized out>
        timer_fd = <optimized out>
        new_val = <optimized out>
        residual = <optimized out>
        val = <optimized out>
        residual = <optimized out>
        val = <optimized out>
        t = <optimized out>
        ts = <optimized out>
        timer_fd = <error reading variable timer_fd (Cannot access memory at address 0x0)>
        t = <optimized out>
        ms = <optimized out>
        timeout_ms = <optimized out>
        residual = <optimized out>
        interest = <optimized out>
        enabled = <optimized out>
        iter = <optimized out>
        val = <optimized out>
        residual = <optimized out>
        val = <optimized out>
        t = <optimized out>
        t = <optimized out>
#4  polling::Poller::wait (self=0x62c21e2b5778 <async_io::reactor::Reactor::get::REACTOR+632>, events=0x62c21e2b5708 <async_io::reactor::Reactor::get::REACTOR+520>, timeout=<error reading variable: Cannot access memory at address 0x8>) at /usr/src/debug/loupe/build/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/polling-3.7.2/src/lib.rs:747
        e = <optimized out>
        timeout = <optimized out>
        deadline = core::option::Option<std::time::Instant>::None
        _lock = std::sync::mutex::MutexGuard<()> {lock: 0x62c21e2b5788 <async_io::reactor::Reactor::get::REACTOR+648>, poison: std::sync::poison::Guard {panicking: false}}
        _enter = tracing::span::Entered {span: 0x79ac03ffe358}
        span = tracing::span::Span {inner: core::option::Option<tracing::span::Inner>::None, meta: core::option::Option<&tracing_core::metadata::Metadata>::None}
        interest = <optimized out>
        span = <error reading variable span (Cannot access memory at address 0x0)>
        meta = <error reading variable meta (Cannot access memory at address 0x0)>
        iter = <optimized out>
        span = <error reading variable span (Cannot access memory at address 0x0)>
        _enter = <optimized out>
        _lock = <optimized out>
        deadline = <error reading variable deadline (Cannot access memory at address 0x8)>
        timeout = <error reading variable timeout (Cannot access memory at address 0x8)>
        e = <optimized out>
        interest = <optimized out>
        enabled = <optimized out>
        iter = <optimized out>
#5  async_io::reactor::ReactorLock::react (self=<optimized out>, timeout=...) at src/reactor.rs:302
        tick = 71
        timeout = core::option::Option<core::time::Duration>::None
        next_timer = <optimized out>
        wakers = alloc::vec::Vec<core::task::wake::Waker, alloc::alloc::Global> {buf: alloc::raw_vec::RawVec<core::task::wake::Waker, alloc::alloc::Global> {inner: alloc::raw_vec::RawVecInner<alloc::alloc::Global> {ptr: core::ptr::unique::Unique<u8> {pointer: core::ptr::non_null::NonNull<u8> {pointer: 0x8}, _marker: core:📑:PhantomData<u8>}, cap: alloc::raw_vec::Cap (0), alloc: alloc::alloc::Global}, _marker: core:📑:PhantomData<core::task::wake::Waker>}, len: 0}
        _enter = tracing::span::Entered {span: 0x79ac03ffe308}
        span = tracing::span::Span {inner: core::option::Option<tracing::span::Inner>::None, meta: core::option::Option<&tracing_core::metadata::Metadata>::None}
#6  0x000062c21dd110f2 in async_io::driver::main_loop (parker=...) at src/driver.rs:69
        reactor_lock = async_io::reactor::ReactorLock {reactor: 0x62c21e2b5500 <async_io::reactor::Reactor::get::REACTOR>, events: std::sync::mutex::MutexGuard<polling::Events> {lock: 0x62c21e2b5700 <async_io::reactor::Reactor::get::REACTOR+512>, poison: std::sync::poison::Guard {panicking: false}}}
        reactor_lock = core::option::Option<async_io::reactor::ReactorLock>::Some(async_io::reactor::ReactorLock {reactor: <optimized out>, events: std::sync::mutex::MutexGuard<polling::Events> {lock: <optimized out>, poison: std::sync::poison::Guard {panicking: <optimized out>}}})
        tick = <optimized out>
        sleeps = 10
        last_tick = <optimized out>
        _enter = tracing::span::Entered {span: 0x79ac03ffe458}
        span = tracing::span::Span {inner: core::option::Option<tracing::span::Inner>::None, meta: core::option::Option<&tracing_core::metadata::Metadata>::None}
        interest = <optimized out>
        meta = <error reading variable meta (Cannot access memory at address 0x0)>
        span = <error reading variable span (Cannot access memory at address 0x0)>
        span = <error reading variable span (Cannot access memory at address 0x0)>
        _enter = <optimized out>
        last_tick = <optimized out>
        sleeps = <optimized out>
        tick = <optimized out>
        delay_us = <optimized out>
        interest = <optimized out>
        enabled = <optimized out>
        iter = <optimized out>
        interest = <optimized out>
        enabled = <optimized out>
        iter = <optimized out>
        reactor_lock = <error reading variable reactor_lock (Cannot access memory at address 0x10)>
        reactor_lock = <optimized out>
        interest = <optimized out>
        enabled = <optimized out>
        iter = <optimized out>
#7  async_io::driver::unparker::{closure#0}::{closure#0} () at src/driver.rs:33
        parker = <optimized out>
#8  std::sys::backtrace::__rust_begin_short_backtrace<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()> (f=...) at /usr/src/debug/rust/rustc-1.84.0-src/library/std/src/sys/backtrace.rs:154
No locals.
#9  0x000062c21dd10af9 in std::thread::{impl#0}::spawn_unchecked_::{closure#1}::{closure#0}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()> () at /usr/src/debug/rust/rustc-1.84.0-src/library/std/src/thread/mod.rs:561
        hooks = std::thread::spawnhook::ChildSpawnHooks {hooks: std::thread::spawnhook::SpawnHooks {first: core::option::Option<alloc::sync::Arc<std::thread::spawnhook::SpawnHook, alloc::alloc::Global>>::None}, to_run: alloc::vec::Vec<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>, alloc::alloc::Global> {buf: alloc::raw_vec::RawVec<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>, alloc::alloc::Global> {inner: alloc::raw_vec::RawVecInner<alloc::alloc::Global> {ptr: core::ptr::unique::Unique<u8> {pointer: core::ptr::non_null::NonNull<u8> {pointer: 0x8}, _marker: core:📑:PhantomData<u8>}, cap: alloc::raw_vec::Cap (0), alloc: alloc::alloc::Global}, _marker: core:📑:PhantomData<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>>}, len: 0}}
        f = async_io::driver::unparker::{closure#0}::{closure_env#0} {parker: parking::Parker {unparker: parking::Unparker {inner: alloc::sync::Arc<parking::Inner, alloc::alloc::Global> {ptr: core::ptr::non_null::NonNull<alloc::sync::ArcInner<parking::Inner>> {pointer: 0x79abd4001310}, phantom: core:📑:PhantomData<alloc::sync::ArcInner<parking::Inner>>, alloc: alloc::alloc::Global}}, _marker: core:📑:PhantomData<core::cell::Cell<()>>}}
#10 core::panic::unwind_safe::{impl#23}::call_once<(), std::thread::{impl#0}::spawn_unchecked_::{closure#1}::{closure_env#0}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()>> (self=...) at /usr/src/debug/rust/rustc-1.84.0-src/library/core/src/panic/unwind_safe.rs:272
        _args = <optimized out>
#11 std::panicking::try::do_call<core::panic::unwind_safe::AssertUnwindSafe<std::thread::{impl#0}::spawn_unchecked_::{closure#1}::{closure_env#0}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()>>, ()> (data=<error reading variable: Cannot access memory at address 0x0>) at /usr/src/debug/rust/rustc-1.84.0-src/library/std/src/panicking.rs:557
        f = core::panic::unwind_safe::AssertUnwindSafe<std::thread::{impl#0}::spawn_unchecked_::{closure#1}::{closure_env#0}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()>> (std::thread::{impl#0}::spawn_unchecked_::{closure#1}::{closure_env#0}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()> {hooks: std::thread::spawnhook::ChildSpawnHooks {hooks: std::thread::spawnhook::SpawnHooks {first: core::option::Option<alloc::sync::Arc<std::thread::spawnhook::SpawnHook, alloc::alloc::Global>>::None}, to_run: alloc::vec::Vec<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>, alloc::alloc::Global> {buf: alloc::raw_vec::RawVec<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>, alloc::alloc::Global> {inner: alloc::raw_vec::RawVecInner<alloc::alloc::Global> {ptr: core::ptr::unique::Unique<u8> {pointer: core::ptr::non_null::NonNull<u8> {pointer: <optimized out>}, _marker: core:📑:PhantomData<u8>}, cap: alloc::raw_vec::Cap (<optimized out>), alloc: alloc::alloc::Global}, _marker: core:📑:PhantomData<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>>}, len: <optimized out>}}, f: async_io::driver::unparker::{closure#0}::{closure_env#0} {parker: parking::Parker {unparker: parking::Unparker {inner: alloc::sync::Arc<parking::Inner, alloc::alloc::Global> {ptr: core::ptr::non_null::NonNull<alloc::sync::ArcInner<parking::Inner>> {pointer: 0x79abd4001310}, phantom: core:📑:PhantomData<alloc::sync::ArcInner<parking::Inner>>, alloc: alloc::alloc::Global}}, _marker: core:📑:PhantomData<core::cell::Cell<()>>}}})
        data = <error reading variable data (Cannot access memory at address 0x0)>
        data = <error reading variable data (Cannot access memory at address 0x0)>
        f = <error reading variable f (Cannot access memory at address 0x18)>
#12 std::panicking::try<(), core::panic::unwind_safe::AssertUnwindSafe<std::thread::{impl#0}::spawn_unchecked_::{closure#1}::{closure_env#0}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()>>> (f=...) at /usr/src/debug/rust/rustc-1.84.0-src/library/std/src/panicking.rs:520
        data = std::panicking::try::Data<core::panic::unwind_safe::AssertUnwindSafe<std::thread::{impl#0}::spawn_unchecked_::{closure#1}::{closure_env#0}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()>>, ()> {f: core::mem::manually_drop::ManuallyDrop<core::panic::unwind_safe::AssertUnwindSafe<std::thread::{impl#0}::spawn_unchecked_::{closure#1}::{closure_env#0}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()>>> {value: core::panic::unwind_safe::AssertUnwindSafe<std::thread::{impl#0}::spawn_unchecked_::{closure#1}::{closure_env#0}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()>> (std::thread::{impl#0}::spawn_unchecked_::{closure#1}::{closure_env#0}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()> {hooks: std::thread::spawnhook::ChildSpawnHooks {hooks: std::thread::spawnhook::SpawnHooks {first: core::option::Option<alloc::sync::Arc<std::thread::spawnhook::SpawnHook, alloc::alloc::Global>>::None}, to_run: alloc::vec::Vec<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>, alloc::alloc::Global> {buf: alloc::raw_vec::RawVec<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>, alloc::alloc::Global> {inner: alloc::raw_vec::RawVecInner<alloc::alloc::Global> {ptr: core::ptr::unique::Unique<u8> {pointer: core::ptr::non_null::NonNull<u8> {pointer: <optimized out>}, _marker: core:📑:PhantomData<u8>}, cap: alloc::raw_vec::Cap (<optimized out>), alloc: alloc::alloc::Global}, _marker: core:📑:PhantomData<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>>}, len: <optimized out>}}, f: async_io::driver::unparker::{closure#0}::{closure_env#0} {parker: parking::Parker {unparker: parking::Unparker {inner: alloc::sync::Arc<parking::Inner, alloc::alloc::Global> {ptr: core::ptr::non_null::NonNull<alloc::sync::ArcInner<parking::Inner>> {pointer: 0x79abd4001310}, phantom: core:📑:PhantomData<alloc::sync::ArcInner<parking::Inner>>, alloc: alloc::alloc::Global}}, _marker: core:📑:PhantomData<core::cell::Cell<()>>}}})}, r: core::mem::manually_drop::ManuallyDrop<()> {value: <synthetic pointer>}, p: core::mem::manually_drop::ManuallyDrop<alloc::boxed::Box<(dyn core::any::Any + core:📑:Send), alloc::alloc::Global>> {value: alloc::boxed::Box<(dyn core::any::Any + core:📑:Send), alloc::alloc::Global> {pointer: <optimized out>, vtable: <optimized out>}}}
        data = <error reading variable data (Cannot access memory at address 0x18)>
        data_ptr = <optimized out>
#13 std::panic::catch_unwind<core::panic::unwind_safe::AssertUnwindSafe<std::thread::{impl#0}::spawn_unchecked_::{closure#1}::{closure_env#0}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()>>, ()> (f=...) at /usr/src/debug/rust/rustc-1.84.0-src/library/std/src/panic.rs:358
No locals.
#14 std::thread::{impl#0}::spawn_unchecked_::{closure#1}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()> () at /usr/src/debug/rust/rustc-1.84.0-src/library/std/src/thread/mod.rs:559
        f = async_io::driver::unparker::{closure#0}::{closure_env#0} {parker: parking::Parker {unparker: parking::Unparker {inner: alloc::sync::Arc<parking::Inner, alloc::alloc::Global> {ptr: core::ptr::non_null::NonNull<alloc::sync::ArcInner<parking::Inner>> {pointer: 0x79abd4001310}, phantom: core:📑:PhantomData<alloc::sync::ArcInner<parking::Inner>>, alloc: alloc::alloc::Global}}, _marker: core:📑:PhantomData<core::cell::Cell<()>>}}
        their_thread = std::thread::Thread (std::thread::Inner::Other(core::pin::Pin<alloc::sync::Arc<std::thread::OtherInner, alloc::alloc::Global>> {__pointer: alloc::sync::Arc<std::thread::OtherInner, alloc::alloc::Global> {ptr: core::ptr::non_null::NonNull<alloc::sync::ArcInner<std::thread::OtherInner>> {pointer: 0x62c2417c8980}, phantom: core:📑:PhantomData<alloc::sync::ArcInner<std::thread::OtherInner>>, alloc: alloc::alloc::Global}}))
        f = std::thread::{impl#0}::spawn_unchecked_::MaybeDangling<async_io::driver::unparker::{closure#0}::{closure_env#0}> (core::mem::maybe_uninit::MaybeUninit<async_io::driver::unparker::{closure#0}::{closure_env#0}> {uninit: (), value: core::mem::manually_drop::ManuallyDrop<async_io::driver::unparker::{closure#0}::{closure_env#0}> {value: async_io::driver::unparker::{closure#0}::{closure_env#0} {parker: parking::Parker {unparker: parking::Unparker {inner: alloc::sync::Arc<parking::Inner, alloc::alloc::Global> {ptr: core::ptr::non_null::NonNull<alloc::sync::ArcInner<parking::Inner>> {pointer: 0x79abd4001310}, phantom: core:📑:PhantomData<alloc::sync::ArcInner<parking::Inner>>, alloc: alloc::alloc::Global}}, _marker: core:📑:PhantomData<core::cell::Cell<()>>}}}})
        hooks = std::thread::spawnhook::ChildSpawnHooks {hooks: std::thread::spawnhook::SpawnHooks {first: core::option::Option<alloc::sync::Arc<std::thread::spawnhook::SpawnHook, alloc::alloc::Global>>::None}, to_run: alloc::vec::Vec<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>, alloc::alloc::Global> {buf: alloc::raw_vec::RawVec<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>, alloc::alloc::Global> {inner: alloc::raw_vec::RawVecInner<alloc::alloc::Global> {ptr: core::ptr::unique::Unique<u8> {pointer: core::ptr::non_null::NonNull<u8> {pointer: 0x8}, _marker: core:📑:PhantomData<u8>}, cap: alloc::raw_vec::Cap (0), alloc: alloc::alloc::Global}, _marker: core:📑:PhantomData<alloc::boxed::Box<(dyn core::ops::function::FnOnce<(), Output=()> + core:📑:Send), alloc::alloc::Global>>}, len: 0}}
        their_packet = alloc::sync::Arc<std::thread::Packet<()>, alloc::alloc::Global> {ptr: core::ptr::non_null::NonNull<alloc::sync::ArcInner<std::thread::Packet<()>>> {pointer: 0x62c2417c9f90}, phantom: core:📑:PhantomData<alloc::sync::ArcInner<std::thread::Packet<()>>>, alloc: alloc::alloc::Global}
        _thread = <error reading variable _thread (Cannot access memory at address 0x0)>
        out = <optimized out>
        name = <optimized out>
        f = <optimized out>
        try_result = <error reading variable try_result (Cannot access memory at address 0x0)>
#15 core::ops::function::FnOnce::call_once<std::thread::{impl#0}::spawn_unchecked_::{closure_env#1}<async_io::driver::unparker::{closure#0}::{closure_env#0}, ()>, ()> () at /usr/src/debug/rust/rustc-1.84.0-src/library/core/src/ops/function.rs:250
No locals.
#16 0x000062c21e03bbbb in alloc::boxed::{impl#28}::call_once<(), dyn core::ops::function::FnOnce<(), Output=()>, alloc::alloc::Global> (self=..., args=<optimized out>) at alloc/src/boxed.rs:1972
No locals.
#17 alloc::boxed::{impl#28}::call_once<(), alloc::boxed::Box<dyn core::ops::function::FnOnce<(), Output=()>, alloc::alloc::Global>, alloc::alloc::Global> (self=0x79abd4000ce0, args=<optimized out>) at alloc/src/boxed.rs:1972
No locals.
#18 std::sys::pal::unix::thread::{impl#2}:🆕:thread_start (main=0x79abd4000ce0) at std/src/sys/pal/unix/thread.rs:105
        _handler = std::sys::pal::unix::stack_overflow::Handler {data: 0x79ac0cafa000}
#19 0x000079ac109ac70a in start_thread (arg=<optimized out>) at pthread_create.c:448
        ret = <optimized out>
        pd = <optimized out>
        out = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {133779708442304, 5622302958963884679, 133779708442304, -608, 11, 133779779522304, 5622302958984856199, 5622260395276075655}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#20 0x000079ac10a30aac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.

Thread 4 (Thread 0x79ac0b1fd6c0 (LWP 132235)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
No locals.
#1  0x000079ac109a8e33 in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8, a6=a6@entry=0, nr=271) at cancellation.c:49
        result = <optimized out>
        pd = <optimized out>
        ch = <optimized out>
#2  0x000079ac109a8e74 in __syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=8, a6=a6@entry=0, nr=271) at cancellation.c:75
        r = <optimized out>
#3  0x000079ac10a23a06 in __GI_ppoll (fds=fds@entry=0x79abfc000b90, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
        tval = {tv_sec = 1, tv_nsec = 1}
#4  0x000079ac11afa327 in ppoll (__fds=0x79abfc000b90, __nfds=1, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
No locals.
#5  g_main_context_poll_unlocked (priority=<optimized out>, context=0x62c2411966a0, timeout_usec=<optimized out>, fds=0x79abfc000b90, n_fds=1) at ../glib/glib/gmain.c:4591
        spec = {tv_sec = 97452, tv_nsec = 529293490}
        spec_p = 0x0
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = <optimized out>
        poll_func = <optimized out>
        ret = <optimized out>
        errsv = <optimized out>
        spec = <optimized out>
        spec_p = <optimized out>
        timeout_msec = <optimized out>
#6  g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x62c2411966a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4268
        max_priority = 2147483647
        timeout_usec = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x79abfc000b90
        begin_time_nsec = 97452529293490
#7  0x000079ac11a96a55 in g_main_context_iteration (context=context@entry=0x62c2411966a0, may_block=may_block@entry=1) at ../glib/glib/gmain.c:4338
        retval = <optimized out>
#8  0x000079ac11dfb2fe in dconf_gdbus_worker_thread (user_data=0x62c2411966a0) at ../dconf/gdbus/dconf-gdbus-thread.c:82
        context = 0x62c2411966a0
#9  0x000079ac11accbe6 in g_thread_proxy (data=0x62c241199f30) at ../glib/glib/gthread.c:892
        thread = 0x62c241199f30
        __func__ = "g_thread_proxy"
#10 0x000079ac109ac70a in start_thread (arg=<optimized out>) at pthread_create.c:448
        ret = <optimized out>
        pd = <optimized out>
        out = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {133779827971776, 5622320824954094215, 133779827971776, -608, 17, 140730581880048, 5622320824975065735, 5622260395276075655}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#11 0x000079ac10a30aac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.

Thread 3 (Thread 0x79ac0c1ff6c0 (LWP 132233)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x000079ac11ac8be0 in g_cond_wait_impl (cond=0x62c241196988, mutex=0x62c241196980) at ../glib/glib/gthread-posix.c:1007
        saved_errno = 0
        res = <optimized out>
        sampled = 305
        sampled = <optimized out>
        gaig_temp = <optimized out>
        saved_errno = <optimized out>
        res = <optimized out>
#2  g_cond_wait (cond=0x62c241196988, mutex=0x62c241196980) at ../glib/glib/gthread.c:1665
No locals.
#3  0x000079ac11a5f98c in g_async_queue_pop_intern_unlocked (queue=0x62c241196980, wait=1, end_time=-1) at ../glib/glib/gasyncqueue.c:375
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#4  0x000079ac11acf237 in g_thread_pool_spawn_thread (data=<optimized out>) at ../glib/glib/gthreadpool.c:297
        spawn_thread_data = <optimized out>
        thread = 0x0
        error = 0x0
        prgname = <optimized out>
        name = "pool-loupe\000\000\000\000\000"
#5  0x000079ac11accbe6 in g_thread_proxy (data=0x62c2411969f0) at ../glib/glib/gthread.c:892
        thread = 0x62c2411969f0
        __func__ = "g_thread_proxy"
#6  0x000079ac109ac70a in start_thread (arg=<optimized out>) at pthread_create.c:448
        ret = <optimized out>
        pd = <optimized out>
        out = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {133779844757184, 5622305432865047175, 133779844757184, -608, 17, 140730581879856, 5622305432886018695, 5622260395276075655}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#7  0x000079ac10a30aac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
No locals.

Thread 2 (Thread 0x79ac0ced8400 (LWP 132232)):
#0  _int_free_create_chunk (av=av@entry=0x79ac10affac0 <main_arena>, p=p@entry=0x62c241b5cd40, size=size@entry=912, nextchunk=nextchunk@entry=0x62c241b5d0d0, nextsize=nextsize@entry=32) at malloc.c:4766
        nextinuse = 33
        bck = <optimized out>
        fwd = <optimized out>
#1  0x000079ac109baa3a in _int_free_merge_chunk (av=av@entry=0x79ac10affac0 <main_arena>, p=p@entry=0x62c241b5cd40, size=size@entry=912) at malloc.c:4742
        nextchunk = 0x62c241b5d0d0
        nextsize = 32
#2  0x000079ac109babf0 in _int_free_chunk (av=0x79ac10affac0 <main_arena>, p=p@entry=0x62c241b5cd40, size=912, have_lock=<optimized out>, have_lock@entry=0) at malloc.c:4667
        fb = <optimized out>
#3  0x000079ac109bd9ab in _int_free (av=<optimized out>, p=0x62c241b5cd40, have_lock=0) at malloc.c:4699
        size = <optimized out>
        size = <optimized out>
#4  __GI___libc_free (mem=0x62c241b5cd50) at malloc.c:3476
        ar_ptr = <optimized out>
        p = 0x62c241b5cd40
        err = 11
#5  0x000079ab82817341 in ?? () from /usr/lib/libnvidia-glcore.so.570.86.16
No symbol table info available.
#6  0x000079ab82814b64 in ?? () from /usr/lib/libnvidia-glcore.so.570.86.16
No symbol table info available.
#7  0x000079ab82814bc4 in ?? () from /usr/lib/libnvidia-glcore.so.570.86.16
No symbol table info available.
#8  0x000079ab82821880 in ?? () from /usr/lib/libnvidia-glcore.so.570.86.16
No symbol table info available.
#9  0x000079ab98127870 in ?? () from /usr/lib/libGLX_nvidia.so.0
No symbol table info available.
#10 0x000079ab98127edf in ?? () from /usr/lib/libGLX_nvidia.so.0
No symbol table info available.
#11 0x000079ac11e46000 in ?? ()
No symbol table info available.
#12 0x0000000000000000 in ?? ()
No symbol table info available.

Thread 1 (Thread 0x79ab67fff6c0 (LWP 132284)):
#0  0x000079ab9900e2a0 in ?? ()
No symbol table info available.
#1  0x0000000067b4e8e9 in ?? ()
No symbol table info available.
#2  0x00000000152d2868 in ?? ()
No symbol table info available.
#3  0x0000000067b4e8e9 in ?? ()
No symbol table info available.
#4  0x0000000000055079 in ?? ()
No symbol table info available.
#5  0x0000000000000007 in ?? ()
No symbol table info available.
#6  0x000062c241f08e68 in ?? ()
No symbol table info available.
#7  0x1825665674d83218 in ?? ()
No symbol table info available.
#8  0x000079ab9a619320 in ?? ()
No symbol table info available.
#9  0x000062c241a22340 in ?? ()
No symbol table info available.
#10 0x000079ab9936e7b4 in ?? ()
No symbol table info available.
#11 0x000062c241f08f88 in ?? ()
No symbol table info available.
#12 0x18256656a3485d30 in ?? ()
No symbol table info available.
#13 0x1825665674d4e658 in ?? ()
No symbol table info available.
#14 0x000062c241ef9760 in ?? ()
No symbol table info available.
#15 0x203a6362696c6720 in ?? ()
No symbol table info available.
#16 0x000062c2420b0da0 in ?? ()
No symbol table info available.
#17 0x000079ab99010920 in ?? ()
No symbol table info available.
#18 0x000079ab67fff6c0 in ?? ()
No symbol table info available.
#19 0xfffffffffffffda0 in ?? ()
No symbol table info available.
#20 0x0000000000000002 in ?? ()
No symbol table info available.
#21 0x00007ffe64575570 in ?? ()
No symbol table info available.
#22 0x000079ab990118fa in ?? ()
No symbol table info available.
#23 0x000079ab67fff6c0 in ?? ()
No symbol table info available.
#24 0x000079ab67fffcdc in ?? ()
No symbol table info available.
#25 0x000079ab67ffeaf0 in ?? ()
No symbol table info available.
#26 0x000079ac109ac70a in start_thread (arg=<optimized out>) at pthread_create.c:448
        ret = <optimized out>
        pd = <optimized out>
        out = <optimized out>
        unwind_buf = <error reading variable unwind_buf (Cannot access memory at address 0xffffffffffffff77)>
        not_first_call = <optimized out>

@amrits could this please be filed internally for additional investigation?
Currently due to these issues, the default Vulkan backend is not viable for use with nVidia.
Neither of these issues are present when using an Intel GPU.

Also attaching a fresh nVidia bug report.