> On Nov 6, 2016, at 11:01 AM, Michael Tuexen <tuexen_at_FreeBSD.org> wrote: > >> On 6 Nov 2016, at 15:39, Konstantin Belousov <kostikbel_at_gmail.com> wrote: >> >> On Sun, Nov 06, 2016 at 02:17:45PM +0100, Michael Tuexen wrote: >>>> On 6 Nov 2016, at 13:28, Konstantin Belousov <kostikbel_at_gmail.com> wrote: >>>> >>>> On Sun, Nov 06, 2016 at 12:50:12PM +0100, Michael Tuexen wrote: >>>>> bus_dmamap_create with the following non-sleepable locks held: >>>>> exclusive sleep mutex mpt (mpt) r = 0 (0xfffffe0000e2f008) locked _at_ dev/mpt/mpt.c:2287 >>>>> stack backtrace: >>>>> #0 0xffffffff80ac0300 at witness_debugger+0x70 >>>>> #1 0xffffffff80ac15e7 at witness_warn+0x3d7 >>>>> #2 0xffffffff81055fef at bus_dmamap_create+0x2f >>>>> #3 0xffffffff80678a25 at mpt_configure_ioc+0x3a5 >>>>> #4 0xffffffff80677476 at mpt_attach+0x226 >>>>> #5 0xffffffff80683299 at mpt_pci_attach+0x9c9 >>>>> #6 0xffffffff80a9478d at device_attach+0x41d >>>>> #7 0xffffffff80a9595a at bus_generic_attach+0x4a >>>>> #8 0xffffffff806ebe75 at pci_attach+0xd5 >>>>> #9 0xffffffff80a9478d at device_attach+0x41d >>>>> #10 0xffffffff80a9595a at bus_generic_attach+0x4a >>>>> #11 0xffffffff803c11a2 at acpi_pcib_acpi_attach+0x402 >>>>> #12 0xffffffff80a9478d at device_attach+0x41d >>>>> #13 0xffffffff80a9595a at bus_generic_attach+0x4a >>>>> #14 0xffffffff803b4c8f at acpi_attach+0xdbf >>>>> #15 0xffffffff80a9478d at device_attach+0x41d >>>>> #16 0xffffffff80a9595a at bus_generic_attach+0x4a >>>>> #17 0xffffffff80ee03e3 at nexus_acpi_attach+0x73 >>>>> >>>>> ... and so on. Not sure which revision introduced it... >>>> r308268 >>>> >>>> I believe that this is an mpt(4) driver issue, which calls >>>> bus_dmamap_create(9) with the mpt mutex held. >>> OK. Whom to contact? Or are you willing to look into it? >>> I haven't worked in that area... >> >> I am really not sure. Looking at the svn history is not very encouraging. > Hmm. Time to change my setup, I guess... >> >> Might be try freebsd-scsi_at_ as well. > I dropped them an e-mail... > > Please see my response on that list. ScottReceived on Sun Nov 06 2016 - 17:41:27 UTC
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