Date: Sun, 6 May 2018 09:44:28 -0700 From: Pete Wright <pete@nomadlogic.org> To: "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org> Subject: exception with iwm (intel 8260) under CURRENT Message-ID: <46a2b120-1410-df26-de85-f72ffb9cfef6@nomadlogic.org>
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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 pete@nomadlogic.org @nomadlogicLA
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