.
Thread 2 (Thread 0x7fb76d4bf800 (LWP 951)):
#0  __strcmp_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:33
No locals.
#1  0x00007fb76c159b6f in cups_array_find (a=a@entry=0x55adb96579c0, e=e@entry=0x55adb9669330, prev=<optimized out>, rdiff=rdiff@entry=0x7fffb5621a74) at array.c:1269
        left = 581
        right = 585
        current = 583
        diff = <optimized out>
#2  0x00007fb76c15a3a2 in cupsArrayFind (a=0x55adb96579c0, e=e@entry=0x55adb9669330) at array.c:491
        current = <optimized out>
        diff = 0
        hash = -1
#3  0x00007fb76c197b17 in _cupsStrFree (s=0x55adb9669334 "requesting-user-name") at string.c:328
        item = <optimized out>
        key = 0x55adb9669330
#4  0x00007fb76c17430c in ipp_free_values (attr=attr@entry=0x7fb760380110, element=element@entry=0, count=1) at ipp.c:6616
        i = <optimized out>
        value = 0x7fb760380130
#5  0x00007fb76c1741d0 in ippDelete (ipp=0x7fb76035ffd0) at ipp.c:1854
        attr = 0x7fb760380110
        next = 0x7fb76039d530
        ipp = 0x7fb76035ffd0
        attr = <optimized out>
        next = <optimized out>
        attr = <optimized out>
        next = <optimized out>
#6  0x000055adb8be6d57 in cupsdDeletePrinter (p=0x55adb978d0d0, update=update@entry=0) at printers.c:789
        i = <optimized out>
        changed = 0
#7  0x000055adb8be7072 in cupsdDeleteTemporaryPrinters (force=0) at printers.c:858
        p = <optimized out>
        unused_time = 1520437229
#8  0x000055adb8bb88be in main (argc=<optimized out>, argv=<optimized out>) at main.c:970
        i = 2
        opt = <optimized out>
        close_all = <optimized out>
        disconnect = <optimized out>
        fg = <optimized out>
        run_as_child = <optimized out>
        print_profile = <optimized out>
        fds = 1
        con = <optimized out>
        job = <optimized out>
        lis = <optimized out>
        current_time = 1520437289
        activity = <optimized out>
        senddoc_time = 1520437235
        expire_time = 1520437289
        report_time = 0
        event_time = 1520437236
        timeout = 1
        limit = {rlim_cur = 4096, rlim_max = 4096}
        action = {__sigaction_handler = {sa_handler = 0x55adb8bcdf10 <sigterm_handler>, sa_sigaction = 0x55adb8bcdf10 <sigterm_handler>}, sa_mask = {__val = {81920, 0 <repeats 15 times>}}, sa_flags = 0, sa_restorer = 0x0}
        netif_time = 1520437289
        service_idle_exit = 0
.
Thread 1 (Thread 0x7fb7417c2700 (LWP 21291)):
#0  __strcmp_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:32
No locals.
#1  0x00007fb76d0c4879 in mime_compare_srcs (f0=<optimized out>, f1=<optimized out>) at filter.c:285
        i = <optimized out>
#2  0x00007fb76c159eef in cups_array_add (a=0x7fb760450810, e=0x7fb760364ed0, insert=insert@entry=0) at array.c:1134
        i = <optimized out>
        current = 45
        diff = 0
#3  0x00007fb76c159fd1 in cupsArrayAdd (a=<optimized out>, e=<optimized out>) at array.c:103
        e = <optimized out>
        a = <optimized out>
#4  0x00007fb76d0c4d7c in mimeFilter2 (mime=0x55adb9656550, src=src@entry=0x55adb9670800, srcsize=srcsize@entry=0, dst=0x55adb97e8610, cost=cost@entry=0x0) at filter.c:199
        current = <optimized out>
        filters = <optimized out>
#5  0x00007fb76d0c4dad in mimeFilter (mime=<optimized out>, src=src@entry=0x55adb9670800, dst=<optimized out>, cost=cost@entry=0x0) at filter.c:150
No locals.
#6  0x000055adb8be2851 in add_printer_formats (p=0x55adb981f770) at printers.c:3682
        i = <optimized out>
        type = 0x55adb9670800
        filters = <optimized out>
        mimetype = "application/x-xfig\000\000e\000are.musicxml+xml\000cument.wordprocessingml.template\000n\000\000k\267\177\000\000\004\000\000\000\000\000\000\000\252\211\223k\267\177\000\000\220\004|A\267\177\000\000\370%|A\267\177", '\000' <repeats 18 times>, "\377\377\377\377\377\377\377\377\000\000\000\000\001\000\000\000\377\377\377\377\377\377\377\377\000\000\000\000\002", '\000' <repeats 51 times>...
        attr = <optimized out>
        i = <optimized out>
        type = <optimized out>
        filters = <optimized out>
        attr = <optimized out>
        mimetype = <optimized out>
        pdl = <optimized out>
        filter = <optimized out>
#7  cupsdSetPrinterAttrs (p=p@entry=0x55adb981f770) at printers.c:2537
        i = <optimized out>
        resource = "/printers/Canon_LBP252_e6_83_e7_", '\000' <repeats 16 times>, "\020\005|A\267\177\000\000b\316\225k\267\177", '\000' <repeats 14 times>, "\001\000\000\000\377\377\377\377\377\377\377\377\000\000\000\000\001", '\000' <repeats 15 times>, "\267\177", '\000' <repeats 22 times>, "\004\000\000\000\000\000\000\000\256T\243\307", '\000' <repeats 12 times>, "\267\177\000\000\340\000|A\267\177\000\000(\000\000\000\255U\000\000P\343\276\270\255U\000\000\000\000\000\000\000\000\000\000h\r\000\000\000\000\000\000"...
        auth = <optimized out>
        auth_supported = <optimized out>
        oldattrs = 0x55adb973dbb0
        attr = <optimized out>
        attr2 = <optimized out>
        name = <optimized out>
        filter = <optimized out>
        type = <optimized out>
#8  0x000055adb8bce94a in create_local_bg_thread (printer=0x55adb981f770) at ipp.c:5397
        from = 0x7fb7603c6410
        to = 0x7fb76044cdf0
        fromppd = "/var/spool/cups/tmp/003b75aa75420", '\000' <repeats 990 times>
        toppd = "/etc/cups/ppd/Canon_LBP252_e6_83_e7_.ppd", '\000' <repeats 983 times>
        scheme = "ipp", '\000' <repeats 28 times>
        userpass = '\000' <repeats 255 times>
        host = "Canon-P-63.local", '\000' <repeats 239 times>
        resource = "/ipp/print", '\000' <repeats 1013 times>
        line = "*CloseUI: *cupsPrintQuality\000mal: \"<</HWResolution[300 300]>>setpagedevice\"\000etpagedevice\"\000\000Compression 0>>setpagedevice\"", '\000' <repeats 904 times>
        port = 80
        encryption = <optimized out>
        http = <optimized out>
        request = <optimized out>
        response = <optimized out>
        attr = <optimized out>
#9  0x00007fb76bcd56db in start_thread (arg=0x7fb7417c2700) at pthread_create.c:463
        pd = 0x7fb7417c2700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140425054398208, -6453158177420012960, 140425054396160, 0, 94204630005616, 140736236435120, 6421926548617106016, 6421870600464962144}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#10 0x00007fb76b9fe88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.