howdy - just updated my current workstation yesterday and while the
wireless interface is working i noticed several of these exceptions
while the device was being brought up:
bus_dma_tag_create with the following non-sleepable locks held:
exclusive sleep mutex iwm0 (network driver) r = 0 (0xfffffe00a5b6c010)
locked @ /usr/home/pete/git/freebsd/sys/dev/iwm/if_iwm.c:2889
stack backtrace:
#0 0xffffffff80bd16a3 at witness_debugger+0x73
#1 0xffffffff80bd2a81 at witness_warn+0x461
#2 0xffffffff8119d32e at bus_dma_tag_create+0x7e
#3 0xffffffff83151fd4 at iwm_dma_contig_alloc+0x64
#4 0xffffffff83155823 at iwm_save_fw_paging+0x113
#5 0xffffffff8314f267 at iwm_mvm_load_ucode_wait_alive+0x1247
#6 0xffffffff83150f8a at iwm_init_hw+0x9a
#7 0xffffffff8315144f at iwm_init+0x2f
#8 0xffffffff8314de66 at iwm_parent+0x46
#9 0xffffffff80bc44ac at taskqueue_run_locked+0x14c
#10 0xffffffff80bc5278 at taskqueue_thread_loop+0x88
#11 0xffffffff80b2b174 at fork_exit+0x84
#12 0xffffffff8100bede at fork_trampoline+0xe
here's the output of the device from pciconf:
iwm0@pci0:1:0:0: class=0x028000 card=0x00108086 chip=0x24f38086
rev=0x3a hdr=0x00
vendor = 'Intel Corporation'
device = 'Wireless 8260'
class = network
not sure if this is a known issue or not. if its new i can file a PR,
let me know.
cheers,
-pete
--
Pete Wright
p...@nomadlogic.org
@nomadlogicLA
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