Date: Fri, 27 Jan 2017 23:58:25 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-amd64@FreeBSD.org Subject: [Bug 216539] page fault in t4iov_attach during boot, on Dell CS23-SH motherboards Message-ID: <bug-216539-6@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D216539 Bug ID: 216539 Summary: page fault in t4iov_attach during boot, on Dell CS23-SH motherboards Product: Base System Version: CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: asomers@FreeBSD.org CC: freebsd-amd64@FreeBSD.org CC: freebsd-amd64@FreeBSD.org Dell C23-SH motherboards, on recent versions of stable/11 and head, will pa= nic with a page fault in t4iov_attach if T4-related modules are loaded at boot time. They do not panic if the T4-related modules are loaded later. Notab= ly, these machines don't even have a T4 card installed. Also of note, hw.pci.enable_pcie_hp=3D0 is set in loader.conf to workaround PR211699. A SuperMicro Sandy Bridge-based system with the same loader.conf settings run= ning the same version of head didn't panic. The machine is running FreeBSD 12.0-CURRENT r311461. It's loader.conf contains: kern.geom.label.disk_ident.enable=3D"0" kern.geom.label.gptid.enable=3D"0" kern.geom.label.disk_ident.enable=3D"0" kern.geom.label.gptid.enable=3D"0" zfs_load=3D"YES" if_cxgbe_load=3D"YES" t4_fw_load=3D"YES" t4_tom_load=3D"YES" t5_fw_load=3D"YES" hw.pci.enable_pcie_hp=3D0 And the panic string is: Fatal trap 12: page fault while in kernel mode cpuid =3D 0; apic id =3D 00 fault virtual address =3D 0x0 fault code =3D supervisor read data, page not present instruction pointer =3D 0x20:0xffffffff817b269a stack pointer =3D 0x28:0xffffffff81bb57d0 frame pointer =3D 0x28:0xffffffff81bb5820 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 0 (swapper) trap number =3D 12 panic: page fault cpuid =3D 0 KDB: stack backtrace: db_trace_self_wrapper() at 0xffffffff803301fb =3D db_trace_self_wrapper+0x2b/frame 0xffffffff81bb5360 vpanic() at 0xffffffff804f3512 =3D vpanic+0x182/frame 0xffffffff81bb53e0 panic() at 0xffffffff804f3383 =3D panic+0x43/frame 0xffffffff81bb5440 trap_fatal() at 0xffffffff808181d1 =3D trap_fatal+0x351/frame 0xffffffff81b= b54a0 trap_pfault() at 0xffffffff808183c3 =3D trap_pfault+0x1e3/frame 0xffffffff81bb5500 trap() at 0xffffffff8081794c =3D trap+0x26c/frame 0xffffffff81bb5710 calltrap() at 0xffffffff807fbc01 =3D calltrap+0x8/frame 0xffffffff81bb5710 --- trap 0xc, rip =3D 0xffffffff817b269a, rsp =3D 0xffffffff81bb57e0, rbp = =3D 0xffffffff81bb5820 --- t4iov_attach() at 0xffffffff817b269a =3D t4iov_attach+0x14a/frame 0xffffffff81bb5820 device_attach() at 0xffffffff80530760 =3D device_attach+0x420/frame 0xffffffff81bb5880 bus_generic_attach() at 0xffffffff8053194d =3D bus_generic_attach+0x2d/frame 0xffffffff81bb58a0 pci_attach() at 0xffffffff80390125 =3D pci_attach+0xd5/frame 0xffffffff81bb= 58e0 device_attach() at 0xffffffff80530760 =3D device_attach+0x420/frame 0xffffffff81bb5940 bus_generic_attach() at 0xffffffff8053194d =3D bus_generic_attach+0x2d/frame 0xffffffff81bb5960 acpi_pcib_acpi_attach() at 0xffffffff8034806a =3D acpi_pcib_acpi_attach+0x3ba/frame 0xffffffff81bb59d0 device_attach() at 0xffffffff80530760 =3D device_attach+0x420/frame 0xffffffff81bb5a30 bus_generic_attach() at 0xffffffff8053194d =3D bus_generic_attach+0x2d/frame 0xffffffff81bb5a50 acpi_attach() at 0xffffffff8033af1f =3D acpi_attach+0xdbf/frame 0xffffffff81bb5b10 device_attach() at 0xffffffff80530760 =3D device_attach+0x420/frame 0xffffffff81bb5b70 bus_generic_attach() at 0xffffffff8053194d =3D bus_generic_attach+0x2d/frame 0xffffffff81bb5b90 nexus_acpi_attach() at 0xffffffff807f7363 =3D nexus_acpi_attach+0x73/frame 0xffffffff81bb5bc0 device_attach() at 0xffffffff80530760 =3D device_attach+0x420/frame 0xffffffff81bb5c20 bus_generic_new_pass() at 0xffffffff80531f89 =3D bus_generic_new_pass+0xe9/= frame 0xffffffff81bb5c50 bus_set_pass() at 0xffffffff8052e3cc =3D bus_set_pass+0x8c/frame 0xffffffff81bb5c80 configure() at 0xffffffff8087eaa9 =3D configure+0x9/frame 0xffffffff81bb5c90 mi_startup() at 0xffffffff8047b3a8 =3D mi_startup+0x118/frame 0xffffffff81b= b5cb0 btext() at 0xffffffff8028802c =3D btext+0x2c Uptime: 1s --=20 You are receiving this mail because: You are on the CC list for the bug.=
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