RE: [PATCH net-next 3/3] net: stmmac: Introducing support for Page Pool

[Jose Abreu]

From: Jon Hunter <jonathanh@xxxxxxxxxx>
Date: Jul/17/2019, 19:58:53 (UTC+00:00)

> I am seeing a boot regression on one of our Tegra boards with both
> mainline and -next. Bisecting is pointing to this commit and reverting
> this commit on top of mainline fixes the problem. Unfortunately, there
> is not much of a backtrace but what I have captured is below. 
> 
> Please note that this is seen on a system that is using NFS to mount
> the rootfs and the crash occurs right around the point the rootfs is
> mounted.
> 
> Let me know if you have any thoughts.
> 
> Cheers
> Jon 
> 
> [   12.221843] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
> [   12.229485] CPU: 5 PID: 1 Comm: init Tainted: G S                5.2.0-11500-g916f562fb28a #18
> [   12.238076] Hardware name: NVIDIA Tegra186 P2771-0000 Development Board (DT)
> [   12.245105] Call trace:
> [   12.247548]  dump_backtrace+0x0/0x150
> [   12.251199]  show_stack+0x14/0x20
> [   12.254505]  dump_stack+0x9c/0xc4
> [   12.257809]  panic+0x13c/0x32c
> [   12.260853]  complete_and_exit+0x0/0x20
> [   12.264676]  do_group_exit+0x34/0x98
> [   12.268241]  get_signal+0x104/0x668
> [   12.271718]  do_notify_resume+0x2ac/0x380
> [   12.275716]  work_pending+0x8/0x10
> [   12.279109] SMP: stopping secondary CPUs
> [   12.283025] Kernel Offset: disabled
> [   12.286502] CPU features: 0x0002,20806000
> [   12.290499] Memory Limit: none
> [   12.293548] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]---
> 
> -- 
> nvpublic

You don't have any more data ? Can you activate DMA-API debug and check 
if there is any more info outputted ?

---
Thanks,
Jose Miguel Abreu