Re: kernel panic on the nvidia tegra tk1 board running nginx
From: Kirill Timofeev <hidden>
Date: 2020-03-17 23:45:16
Also in:
linux-tegra
Hi folks, after some trial and error and with the help from Ralf Ramsauer (thanks a bunch Ralf!) we figured out that removing CONFIG_ARM_LPAE eliminates kernel panic. Here is the kernel config diff: kvt@rage ~ $ diff kernel.config.old /usr/src/linux/.config 236d235 < CONFIG_ZONE_DMA=y 240c239 < CONFIG_PGTABLE_LEVELS=3 ---
CONFIG_PGTABLE_LEVELS=2
279d277 < # CONFIG_ARCH_AXXIA is not set 347c345 < CONFIG_ARM_LPAE=y ---
# CONFIG_ARM_LPAE is not set
411a410
# CONFIG_VMSPLIT_3G_OPT is not set
434a434
CONFIG_CPU_SW_DOMAIN_PAN=y
436,437d435 < CONFIG_SYS_SUPPORTS_HUGETLBFS=y < CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y 567d564 < CONFIG_HAVE_RCU_TABLE_FREE=y 702d698 < CONFIG_HAVE_FAST_GUP=y 709d704 < CONFIG_PHYS_ADDR_T_64BIT=y 713d707 < # CONFIG_TRANSPARENT_HUGEPAGE is not set 728d721 < CONFIG_ARCH_HAS_PTE_SPECIAL=y 3369a3363
# CONFIG_USB_FUSB300 is not set
4436d4429 < # CONFIG_LIBNVDIMM is not set 4537d4529 < # CONFIG_HUGETLBFS is not set 4801a4794
# CONFIG_CRYPTO_DEV_HIFN_795X is not set
4883d4875 < CONFIG_ARCH_DMA_ADDR_T_64BIT=y 4887,4889d4878 < CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE=y < CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU=y < CONFIG_SWIOTLB=y kvt@rage ~ $ Thanks, Kirill. On Wed, Feb 26, 2020 at 8:34 AM Kirill Timofeev [off-list ref] wrote:
I'm sorry if you will see this as a duplicate, resending as a plain text message. Hi folks, I run home server on the nvidia tegra tk1 using gentoo: Linux rage 5.5.6-gentoo #1 SMP PREEMPT Tue Feb 25 12:40:17 PST 2020 armv7l ARMv7 Processor rev 3 (v7l) NVIDIA Tegra SoC (Flattened Device Tree) GNU/Linux This server runs nginx on both 80 and 443. I recently was updating my let's encrypt certificate and it failed because plain http was not working (while https was working ok): kvt@joy:~$ curl -s http://a0.twilightparadox.com|hd 00000000 89 1f 00 00 02 2e 00 00 00 00 00 00 9d 1f 00 00 |................| 00000010 02 2e 00 00 00 00 00 00 aa 1f 00 00 02 2e 00 00 |................| 00000020 00 00 00 00 b8 1f 00 00 02 2e 00 00 00 |.............| 0000002d kvt@joy:~$ curl -s https://a0.twilightparadox.com|hd 00000000 3c 68 74 6d 6c 3e 3c 62 6f 64 79 3e 55 6e 64 65 |<html><body>Unde| 00000010 72 20 63 6f 6e 73 74 72 75 63 74 69 6f 6e 3c 2f |r construction</| 00000020 62 6f 64 79 3e 3c 2f 68 74 6d 6c 3e 0a |body></html>.| 0000002d kvt@joy:~$ I reverted kernel to 4.19.98 and everything worked fine with same settings. Locally everything works fine (with latest kernel): kvt@rage:~$ curl -s 127.0.0.1 <html><body>Under construction</body></html> kvt@rage:~$ The worst thing is that if I do local http call and then do external http call I'm getting kernel panic (please see file attached). This kernel panic was captured on 5.4.10 but I see same behavior with latest 5.5.6. If I shutdown nginx and run some other http server (e.g. python3 -m http.server) everything works fine. Just in case please find my kernel config attached. Please let me know if something is wrong with my kernel config or if I need to provide any additional information. Thanks, Kirill.
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