* Kernel crash in DSA/Marvell 6176 switch in 5.4.36 [not found] <CAOK2joE-4AWxvT5YWoCFTUb6WhwpSST2bLavKvL8SZi1D3_2VQ@mail.gmail.com> @ 2020-05-06 23:35 ` Sriram Chadalavada 2020-05-06 23:54 ` Andrew Lunn 2020-05-06 23:57 ` Andrew Lunn 0 siblings, 2 replies; 3+ messages in thread From: Sriram Chadalavada @ 2020-05-06 23:35 UTC (permalink / raw) To: netdev For this device tree with new binding, there was no crash with 4.19.16 kernel on an NXP imx6 device but there is with 5.4.36. eth0: igb0 { compatible = "intel,igb"; /* SC: New binding for the Marvell 6176 switch attached to the Intel Gigabit Ethernet Controller via SERDES link */ mdio1: mdio@0 { #address-cells = <2>; #size-cells = <0>; status = "okay"; switch0: switch0@0 { compatible = "marvell,mv88e6085"; reg = <0 0>; interrupt-parent = <&gpio2>; interrupts = <31 IRQ_TYPE_LEVEL_LOW>; dsa,member = <0 0>; mdio2: mdio@1{ ports { #address-cells = <1>; #size-cells = <0>; port@0 { reg = <0>; label = "port0"; }; port@1 { reg = <1>; label = "port1"; }; port@2 { reg = <2>; label = "port2"; }; port@5 { reg = <5>; label = "cpu"; ethernet = <ð0>; }; }; }; mdio3: mdio@2{ /*SC: External configuration MDIO bus. Followed example in Documentation/devicetree/bindings/dsa/marvell.txt */ compatible = "marvell,mv88e6xxx-mdio-external"; #address-cells = <1>; #size-cells = <0>; }; }; Here is log of the 5.4.36 kernel crash. Can someone point to what could be going on here? 63] mdio_bus !soc!pcie@1ffc000!pcie@2,1!pcie@3,0!igb0!mdio@0!switch0@0!md: ports has invalid PHY address [ 2.239378] mdio_bus !soc!pcie@1ffc000!pcie@2,1!pcie@3,0!igb0!mdio@0!switch0@0!md: scan phy ports at address 0 [ 2.240858] mmcblk1: mmc1:0007 SDCIT 29.2 GiB [ 2.244341] ------------[ cut here ]------------ [ 2.244355] WARNING: CPU: 2 PID: 44 at kernel/kmod.c:137 0x800433d0 [ 2.244359] Modules linked in: [ 2.244372] CPU: 2 PID: 44 Comm: kworker/u8:3 Not tainted 5.4.36 #0 [ 2.244377] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) [ 2.244386] Workqueue: events_unbound 0x80041cbc [ 2.244402] Function entered at [<80016344>] from [<8001299c>] [ 2.244408] Function entered at [<8001299c>] from [<8053a850>] [ 2.244413] Function entered at [<8053a850>] from [<80024108>] [ 2.244418] Function entered at [<80024108>] from [<80024174>] [ 2.244423] Function entered at [<80024174>] from [<800433d0>] [ 2.244429] Function entered at [<800433d0>] from [<802e8ec0>] [ 2.244435] Function entered at [<802e8ec0>] from [<802ea4c0>] [ 2.244440] Function entered at [<802ea4c0>] from [<802ea63c>] [ 2.244444] Function entered at [<802ea63c>] from [<803d5a40>] [ 2.244449] Function entered at [<803d5a40>] from [<803d617c>] [ 2.244456] Function entered at [<803d617c>] from [<802ed25c>] [ 2.244461] Function entered at [<802ed25c>] from [<802ef0c0>] [ 2.244466] Function entered at [<802ef0c0>] from [<802ebb0c>] [ 2.244470] Function entered at [<802ebb0c>] from [<8027804c>] [ 2.244475] Function entered at [<8027804c>] from [<80278340>] [ 2.244479] Function entered at [<80278340>] from [<802765d8>] [ 2.244484] Function entered at [<802765d8>] from [<80277dec>] [ 2.244488] Function entered at [<80277dec>] from [<802771f0>] [ 2.244493] Function entered at [<802771f0>] from [<802748e8>] [ 2.244498] Function entered at [<802748e8>] from [<802ebbb0>] [ 2.244502] Function entered at [<802ebbb0>] from [<803d604c>] [ 2.244506] Function entered at [<803d604c>] from [<8032acd8>] [ 2.244511] Function entered at [<8032acd8>] from [<8021d0d8>] [ 2.244516] Function entered at [<8021d0d8>] from [<8027804c>] [ 2.244521] Function entered at [<8027804c>] from [<80278340>] [ 2.244524] Function entered at [<80278340>] from [<802765d8>] [ 2.244529] Function entered at [<802765d8>] from [<80277dec>] [ 2.244533] Function entered at [<80277dec>] from [<80211c84>] [ 2.244537] Function entered at [<80211c84>] from [<80211cfc>] [ 2.244542] Function entered at [<80211cfc>] from [<80211d30>] [ 2.244552] ---[ end trace 4bc0e4b8c964c71c ]--- [ 2.245041] mv88e6085 0000:03:00.0-1538:00: no ports child node found ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Kernel crash in DSA/Marvell 6176 switch in 5.4.36 2020-05-06 23:35 ` Kernel crash in DSA/Marvell 6176 switch in 5.4.36 Sriram Chadalavada @ 2020-05-06 23:54 ` Andrew Lunn 2020-05-06 23:57 ` Andrew Lunn 1 sibling, 0 replies; 3+ messages in thread From: Andrew Lunn @ 2020-05-06 23:54 UTC (permalink / raw) To: Sriram Chadalavada; +Cc: netdev > MDIO bus. Followed example in > Documentation/devicetree/bindings/dsa/marvell.txt */ > compatible = "marvell,mv88e6xxx-mdio-external"; 6176 does not have an external MDIO bus. Only the 6390 family does. The 6176 has just one bus, which is both internal and external. > #address-cells = <1>; > #size-cells = <0>; > }; > }; > Here is log of the 5.4.36 kernel crash. Can someone point to what > could be going on here? > > 63] mdio_bus !soc!pcie@1ffc000!pcie@2,1!pcie@3,0!igb0!mdio@0!switch0@0!md: > ports has invalid PHY address "ports has invalid PHY address" does not exist in 5.4.36. > [ 2.239378] mdio_bus > !soc!pcie@1ffc000!pcie@2,1!pcie@3,0!igb0!mdio@0!switch0@0!md: scan phy > ports at address 0 > [ 2.240858] mmcblk1: mmc1:0007 SDCIT 29.2 GiB > [ 2.244341] ------------[ cut here ]------------ > [ 2.244355] WARNING: CPU: 2 PID: 44 at kernel/kmod.c:137 0x800433d0 > [ 2.244359] Modules linked in: > [ 2.244372] CPU: 2 PID: 44 Comm: kworker/u8:3 Not tainted 5.4.36 #0 > [ 2.244377] Hardware name: Freescale i.MX6 Quad/DualLite (Device > Tree) > [ 2.244386] Workqueue: events_unbound 0x80041cbc > [ 2.244402] Function entered at [<80016344>] from [<8001299c>] > [ 2.244408] Function entered at [<8001299c>] from [<8053a850>] > [ 2.244413] Function entered at [<8053a850>] from [<80024108>] > [ 2.244418] Function entered at [<80024108>] from [<80024174>] > [ 2.244423] Function entered at [<80024174>] from [<800433d0>] > [ 2.244429] Function entered at [<800433d0>] from [<802e8ec0>] > [ 2.244435] Function entered at [<802e8ec0>] from [<802ea4c0>] > [ 2.244440] Function entered at [<802ea4c0>] from [<802ea63c>] > [ 2.244444] Function entered at [<802ea63c>] from [<803d5a40>] > [ 2.244449] Function entered at [<803d5a40>] from [<803d617c>] > [ 2.244456] Function entered at [<803d617c>] from [<802ed25c>] > [ 2.244461] Function entered at [<802ed25c>] from [<802ef0c0>] > [ 2.244466] Function entered at [<802ef0c0>] from [<802ebb0c>] > [ 2.244470] Function entered at [<802ebb0c>] from [<8027804c>] This is useless to us. You need to enable symbols in the image. I think that is CONFIG_DEBUG_INFO. > [ 2.245041] mv88e6085 0000:03:00.0-1538:00: no ports child node found static int dsa_switch_parse_ports_of(struct dsa_switch *ds, struct device_node *dn) { struct device_node *ports, *port; struct dsa_port *dp; int err = 0; u32 reg; ports = of_get_child_by_name(dn, "ports"); if (!ports) { dev_err(ds->dev, "no ports child node found\n"); return -EINVAL; } This would indicate your 'port' node is misplaced somehow. Andrew ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Kernel crash in DSA/Marvell 6176 switch in 5.4.36 2020-05-06 23:35 ` Kernel crash in DSA/Marvell 6176 switch in 5.4.36 Sriram Chadalavada 2020-05-06 23:54 ` Andrew Lunn @ 2020-05-06 23:57 ` Andrew Lunn 1 sibling, 0 replies; 3+ messages in thread From: Andrew Lunn @ 2020-05-06 23:57 UTC (permalink / raw) To: Sriram Chadalavada; +Cc: netdev On Wed, May 06, 2020 at 07:35:50PM -0400, Sriram Chadalavada wrote: > For this device tree with new binding, there was no crash with 4.19.16 > kernel on an NXP imx6 device but there is with 5.4.36. > eth0: igb0 { > compatible = "intel,igb"; > /* SC: New binding for the Marvell 6176 switch > attached to the Intel Gigabit Ethernet Controller via SERDES link */ > mdio1: mdio@0 { > #address-cells = <2>; > #size-cells = <0>; > status = "okay"; > switch0: switch0@0 { > > compatible = "marvell,mv88e6085"; > reg = <0 0>; > interrupt-parent = <&gpio2>; > interrupts = <31 IRQ_TYPE_LEVEL_LOW>; > dsa,member = <0 0>; > mdio2: mdio@1{ > ports > { Err, what? This would never work for 4.19.16, or any kernel version. Andrew ^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-05-06 23:35 ` Kernel crash in DSA/Marvell 6176 switch in 5.4.36 Sriram Chadalavada
2020-05-06 23:54 ` Andrew Lunn
2020-05-06 23:57 ` Andrew Lunn
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