Hi John, You can check this very useful post about Hardfault in Cortex M in the follow link:
- https://cwiki.apache.org/confluence/display/NUTTX/Analyzing+Cortex-M+Hardfaults Regards, Oliver Miranda Em qui., 4 de mar. de 2021 às 18:06, John Rippetoe < jrippe...@roboticresearch.com> escreveu: > Alan, > > The MAC in the the H7 has it's own dedicated internal DMA, so I don't > think that disabling the system-wide DMA would have any effect. I can > give it a shot anyways though and report back! > > Thanks for the suggestion. > > - John > > On 3/4/21 4:00 PM, Alan Carvalho de Assis wrote: > > Hi John, > > > > Did you try to disable DMA support to see if the issue disappear? > > > > I think other MCUs are using DMA for Ethernet too and this issue > > didn't happen. So I think disabling DMA could be a valid test to find > > out the root causes. > > > > BR, > > > > Alan > > > > On 3/4/21, John Rippetoe <jrippe...@roboticresearch.com> wrote: > >> Hello All, > >> > >> I've been playing around with networking on the STM32H7 and am seeing > >> hardfaults that appear to be related to NET_ETH_PKTSIZE. From the log > >> below, the driver would appear to be dropping packets that are too large > >> to fit into the default packet size of 590. By increasing the packet > >> size to the max (1518), the problem seems to disappear, but I am a > >> little confused why the driver is able to catch the fact that the > >> received packet was too large and drop it appropriately, but then crash. > >> After poking around the ethernet driver, I think I understand the issue > >> to be that because the MAC DMA does not know that the buffer it is > >> writing into has a size limit, it is overflowing the buffer and writing > >> into adjacent memory. Am I understanding this correctly? > >> > >> My main concern here is that increasing NET_ETH_PKTSIZE to the limit > >> will only hide the issue for a time instead of solving it. A quick > >> google search does show that the maximum ethernet frame size is 1518 > >> bytes though, so I am working under the assumption that maxing it out in > >> my config will account for all possible frame sizes and eliminate this > >> issue. I have no experience with low level networking protocols and > >> standards, so I thought it would be prudent to seek out additional help > >> to make sure I am on the right track. > >> > >> Thanks in advance. > >> > >> - John > >> > >> stm32_receive: WARNING: DROPPED Too big: 684 > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> stm32_receive: WARNING: DROPPED Too big: 1332 > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> stm32_receive: WARNING: DROPPED Too big: 1264 > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> stm32_receive: WARNING: DROPPED Too big: 684 > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> stm32_receive: WARNING: DROPPED Too big: 1364 > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> stm32_receive: WARNING: DROPPED Too big: 1264 > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> stm32_receive: WARNING: DROPPED Too big: 1436 > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> stm32_receive: WARNING: DROPPED Too big: 1300 > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> ipv4_input: WARNING: Not destined for us; not forwardable... Dropping! > >> up_hardfault: PANIC!!! Hard fault: 40000000 > >> up_assert: Assertion failed at file:armv7-m/up_hardfault.c line: 148 > >> task: lpwork > >> up_registerdump: R0: 24012080 2401206e 0000024e 00000000 24012000 > >> 40029160 24011fc0 00008040 > >> up_registerdump: R8: 40029134 24011f00 24011fe0 240120b8 00000001 > >> 38002f88 080a26a7 080a2538 > >> up_registerdump: xPSR: 81000000 BASEPRI: 000000f0 CONTROL: 00000000 > >> up_registerdump: EXC_RETURN: ffffffe9 > >> up_dumpstate: sp: 24010bb0 > >> up_dumpstate: IRQ stack: > >> up_dumpstate: base: 24010c00 > >> up_dumpstate: size: 00000200 > >> up_dumpstate: used: 00000140 > >> up_stackdump: 24010ba0: 24010bb0 2400e830 0000064c 080a0fed 000000f0 > >> 00000000 240120b8 00000001 > >> up_stackdump: 24010bc0: 38002f88 080a26a7 080a2538 0816625a 00000000 > >> 080a129f 080a1271 080f754f > >> up_stackdump: 24010be0: 000000f0 080a2935 000000f0 38002eb4 40029160 > >> 24011fc0 00008040 080a1b8f > >> up_dumpstate: sp: 38002f88 > >> up_dumpstate: User stack: > >> up_dumpstate: base: 38003008 > >> up_dumpstate: size: 0000064c > >> up_dumpstate: used: 000003e0 > >> up_stackdump: 38002f80: 00000010 080a269b 24012050 24012000 00000000 > >> 24012010 2400b430 00000000 > >> up_stackdump: 38002fa0: 000000f0 00000080 00000000 00000000 00005ec8 > >> 0809d2e7 ffffffff ffffffff > >> up_stackdump: 38002fc0: 00005ec8 00000001 00000010 00020000 39276cac > >> 2400b430 00000000 00000000 > >> up_stackdump: 38002fe0: 00000000 00000000 00000000 00000000 00000000 > >> 0809c501 0809c4f1 0809bed5 > >> up_stackdump: 38003000: 00000000 00000000 deadbeef 38003014 00000000 > >> 6f77706c de006b72 7b93d153 > >> up_taskdump: Idle Task: PID=0 Stack Used=0 of 0 > >> up_taskdump: hpwork: PID=1 Stack Used=352 of 2028 > >> up_taskdump: lpwork: PID=2 Stack Used=992 of 1612 > >> up_taskdump: init: PID=3 Stack Used=1544 of 2980 > >> > >> > >> CONFIDENTIALITY NOTICE: This communication may contain private, > confidential > >> and privileged material for the sole use of the intended recipient. If > you > >> are not the intended recipient, please delete this e-mail and any > >> attachments permanently. > >> > >> > CONFIDENTIALITY NOTICE: This communication may contain private, > confidential and privileged material for the sole use of the intended > recipient. If you are not the intended recipient, please delete this e-mail > and any attachments permanently. > >
