(gdb) info threads
  657 Thread 0x7ffff4c5b910 (LWP 22229)  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
  656 Thread 0x7ffff4089910 (LWP 22228)  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
  654 Thread 0x7ffff34b7910 (LWP 22226)  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:136
* 652 Thread 0x7ffff5bfe910 (LWP 22224)  chunk_obj_alloc (mem=0x130b320, size=72, type=0xa73900, cname=0x8f8190 "lcms")
    at ../gs/base/gsmchunk.c:418
  1 Thread 0x7ffff7fd7730 (LWP 21564)  memset () at ../sysdeps/x86_64/memset.S:1021
(gdb) where
#0  chunk_obj_alloc (mem=0x130b320, size=72, type=0xa73900, cname=0x8f8190 "lcms") at ../gs/base/gsmchunk.c:418
#1  0x00000000005a5512 in chunk_alloc_bytes (mem=0x130b320, size=72, cname=0x8f8190 "lcms") at ../gs/base/gsmchunk.c:526
#2  0x0000000000510c80 in gs_lcms2_malloc (id=0x130b320, size=72) at ../gs/base/gsicc_lcms2.c:48
#3  0x0000000000522500 in _cmsMalloc (ContextID=0x130b320, size=72) at ../gs/lcms2/src/cmserr.c:215
#4  0x000000000052225a in _cmsMallocZeroDefaultFn (ContextID=0x130b320, size=72) at ../gs/lcms2/src/cmserr.c:97
#5  0x0000000000522526 in _cmsMallocZero (ContextID=0x130b320, size=72) at ../gs/lcms2/src/cmserr.c:221
#6  0x0000000000533399 in cmsPipelineAlloc (ContextID=0x130b320, InputChannels=3, OutputChannels=3) at ../gs/lcms2/src/cmslut.c:1313
#7  0x000000000052fb8f in BuildRGBOutputMatrixShaper (hProfile=0x135c2b8) at ../gs/lcms2/src/cmsio1.c:472
#8  0x000000000052ffad in _cmsReadOutputLUT (hProfile=0x135c2b8, Intent=0) at ../gs/lcms2/src/cmsio1.c:637
#9  0x00000000005210d2 in DefaultICCintents (ContextID=0x1aa6bb0, nProfiles=2, TheIntents=0x7ffff5bf5dd0, hProfiles=0x7ffff5bf6640,
    BPC=0x7ffff5bf61d0, AdaptationStates=0x7ffff5bf55d0, dwFlags=9216) at ../gs/lcms2/src/cmscnvrt.c:556
#10 0x0000000000521fa4 in _cmsLinkProfiles (ContextID=0x1aa6bb0, nProfiles=2, TheIntents=0x7ffff5bf5dd0, hProfiles=0x7ffff5bf6640,
    BPC=0x7ffff5bf61d0, AdaptationStates=0x7ffff5bf55d0, dwFlags=9216) at ../gs/lcms2/src/cmscnvrt.c:1001
#11 0x00000000005589bd in cmsCreateExtendedTransform (ContextID=0x1aa6bb0, nProfiles=2, hProfiles=0x7ffff5bf6640, BPC=0x7ffff5bf61d0,
    Intents=0x7ffff5bf5dd0, AdaptationStates=0x7ffff5bf55d0, hGamutProfile=0x0, nGamutPCSposition=0, InputFormat=262170,
    OutputFormat=262170, dwFlags=9216) at ../gs/lcms2/src/cmsxform.c:617
#12 0x0000000000558e23 in cmsCreateMultiprofileTransformTHR (ContextID=0x1aa6bb0, hProfiles=0x7ffff5bf6640, nProfiles=2,
    InputFormat=262170, OutputFormat=262170, Intent=0, dwFlags=9216) at ../gs/lcms2/src/cmsxform.c:728
#13 0x0000000000558f2a in cmsCreateTransformTHR (ContextID=0x1aa6bb0, Input=0x24f1338, InputFormat=262170, Output=0x135c2b8,
    OutputFormat=262170, Intent=0, dwFlags=9216) at ../gs/lcms2/src/cmsxform.c:769
#14 0x0000000000511479 in gscms_get_link (lcms_srchandle=0x24f1338, lcms_deshandle=0x135c2b8, rendering_params=0x7ffff5bf6a00,
    memory=0x1aa6bb0) at ../gs/base/gsicc_lcms2.c:419
#15 0x000000000050fcf2 in gsicc_get_link_profile (pis=0x7ffff5bf8580, dev=0x24e68b8, gs_input_profile=0x24e8338,
    gs_output_profile=0x1360438, rendering_params=0x7ffff5bf6a00, memory=0x1aa6bb0, devicegraytok=1) at ../gs/base/gsicc_cache.c:933
#16 0x000000000050f106 in gsicc_get_link (pis=0x7ffff5bf8580, dev_in=0x24e68b8, pcs_in=0x24e8298, output_colorspace=0x0,
    rendering_params=0x7ffff5bf6a00, memory=0x1aa6bb0) at ../gs/base/gsicc_cache.c:614
#17 0x0000000000504e58 in gx_concretize_ICC (pcc=0x7ffff5bf6a90, pcs=0x24e8298, pconc=0x7ffff5bf6c00, pis=0x7ffff5bf8580, dev=0x24e68b8)
    at ../gs/base/gsicc.c:524
#18 0x000000000041a22a in gx_concretize_Indexed (pc=0x7ffff5bf6cf0, pcs=0x24e84b8, pconc=0x7ffff5bf6c00, pis=0x7ffff5bf8580,
    dev=0x24e68b8) at ../gs/base/gscolor2.c:467
#19 0x00000000007d1748 in gx_default_remap_color (pcc=0x7ffff5bf6cf0, pcs=0x24e84b8, pdc=0x2cdd578, pis=0x7ffff5bf8580, dev=0x24e68b8,
    select=gs_color_select_source) at ../gs/base/gxcmap.c:600
#20 0x0000000000805546 in image_init_colors (penum=0x24ea898, bps=1, spp=1, format=gs_image_format_chunky, decode=0x7ffff5bf8bfc,
    pis=0x7ffff5bf8580, dev=0x24e68b8, pcs=0x24e84b8, pdcb=0x7ffff5bf70e0) at ../gs/base/gxipixel.c:1285
#21 0x0000000000802166 in gx_image_enum_begin (dev=0x24e68b8, pis=0x7ffff5bf8580, pmat=0x7ffff5bf8604, pic=0x7ffff5bf8bd0,
    pdcolor=0x7ffff5bfb740, pcpath=0x0, mem=0x1aa6bb0, penum=0x24ea898) at ../gs/base/gxipixel.c:545
#22 0x0000000000418c3e in gx_begin_image4 (dev=0x24e68b8, pis=0x7ffff5bf8580, pmat=0x0, pic=0x7ffff5bf8bd0, prect=0x7ffff5bf9d30,
    pdcolor=0x7ffff5bfb740, pcpath=0x0, mem=0x1aa6bb0, pinfo=0x7ffff5bf9e10) at ../gs/base/gximage4.c:107
#23 0x00000000008325c4 in gx_default_begin_typed_image (dev=0x24e68b8, pis=0x7ffff5bf8580, pmat=0x0, pic=0x7ffff5bf8bd0,
    prect=0x7ffff5bf9d30, pdcolor=0x7ffff5bfb740, pcpath=0x0, memory=0x1aa6bb0, pinfo=0x7ffff5bf9e10) at ../gs/base/gdevddrw.c:1031
#24 0x00000000005773b7 in clist_playback_band (playback_action=playback_action_render, cdev=0x24e2938, s=0x7ffff5bfd1a0,
    target=0x24e68b8, x0=0, y0=222, mem=0x1aa6bb0) at ../gs/base/gxclrast.c:1367
#25 0x00000000005817d3 in clist_playback_file_bands (action=playback_action_render, crdev=0x24e2938, page_info=0x7ffff5bfda38,
    target=0x24e68b8, band_first=1, band_last=1, x0=0, y0=222) at ../gs/base/gxclread.c:856
#26 0x000000000058137c in clist_render_rectangle (cldev=0x24e2938, prect=0x7ffff5bfe020, bdev=0x24e68b8, render_plane=0x0, clear=1)
---Type <return> to continue, or q <return> to quit---
    at ../gs/base/gxclread.c:784
#27 0x00000000005a3cf5 in clist_render_thread (data=0x20fe080) at ../gs/base/gxclthrd.c:407
#28 0x00000000005af5dd in gp_thread_begin_wrapper (thread_data=0x133b680) at ../gs/base/gp_psync.c:223
#29 0x00007ffff6ff7a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#30 0x00007ffff6adcd4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#31 0x0000000000000000 in ?? ()