This is an ongoing issue still in the latest linux-next. It's
quite a strange bug because why would it only affect rk3399-rock-pi-4b?
The only thing I see which touched fs/nfs between next-20250716 and
next-20250717 is commit e9d8e2bf2320 ("fs: change write_begin/write_end
interface to take struct kiocb *"). That patch is pretty straight
forward and wouldn't have caused something like this. Let me add
linux-block to the CC list as well to see if they have any ideas.
regards,
dan carpenter
On Tue, Jul 22, 2025 at 07:59:11PM +0530, Naresh Kamboju wrote:
> The rk3399-rock-pi-4b device fails to mount the root filesystem over
> NFS when the kernel is built with 64K page size.
> CONFIG_ARM64_64K_PAGES=y
>
> This regression was first observed with the Linux next-20250717 tag
> and continues to persist through next-20250722.
>
> Device: rk3399-rock-pi-4b
> Build Configuration: lkftconfig-64k_page_size
>
> Regression Window:
>
> Good: next-20250716
> Bad: next-20250717.. Still Bad: next-20250722
>
> Kernel Config Impact:
> CONFIG_ARM64_64K_PAGES=y - NFS mount fails
> CONFIG_ARM64_4K_PAGES=y - NFS mount works as expected
>
> Regression Analysis:
> - New regression? Yes
> - Reproducibility? Yes
>
> Boot regression: next-20250717 arm64 rk3399-rock-pi-4b NFS mount
> failure with 64K page size
>
> Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
>
> ## Boot log
>
> [ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034]
> [ 0.000000] Linux version 6.16.0-rc6-next-20250717
> (tuxmake@tuxmake) (aarch64-linux-gnu-gcc (Debian 13.3.0-16) 13.3.0,
> GNU ld (GNU Binutils for Debian) 2.44) #1 SMP PREEMPT @1752747461
> [ 0.000000] KASLR disabled due to lack of seed
> [ 0.000000] Machine model: Radxa ROCK Pi 4B
> [ 0.000000] efi: UEFI not found.
> [ 0.000000] earlycon: uart0 at MMIO32 0x00000000ff1a0000 (options
> '1500000n8')
> [ 0.000000] printk: legacy bootconsole [uart0] enabled
> [ 0.000000] OF: reserved mem: Reserved memory: No reserved-memory
> node in the DT
> [ 0.000000] NUMA: Faking a node at [mem
> 0x0000000000200000-0x00000000f7ffffff]
>
> <trim>
>
> [ 6.520442] Sending DHCP requests ..
> [ 13.295867] platform sdio-pwrseq: deferred probe pending:
> pwrseq_simple: reset control not ready
> [ 13.295887] dwmmc_rockchip fe310000.mmc: IDMAC supports 32-bit address mode.
> [ 13.296260] rockchip-pm-domain
> ff310000.power-management:power-controller: sync_state() pending due
> to fe310000.mmc
> [ 13.296278] rockchip-pm-domain
> ff310000.power-management:power-controller: sync_state() pending due
> to ff650000.video-codec
> [ 13.297085] dwmmc_rockchip fe310000.mmc: Using internal DMA controller.
> [ 13.297660] rockchip-pm-domain
> ff310000.power-management:power-controller: sync_state() pending due
> to ff660000.video-codec
> [ 13.298653] dwmmc_rockchip fe310000.mmc: Version ID is 270a
> [ 13.299536] rockchip-pm-domain
> ff310000.power-management:power-controller: sync_state() pending due
> to ff680000.rga
> [ 13.300164] dwmmc_rockchip fe310000.mmc: DW MMC controller at irq
> 49,32 bit host data width,256 deep fifo
> [ 13.301117] rockchip-pm-domain
> ff310000.power-management:power-controller: sync_state() pending due
> to ff880000.i2s
> [ 13.304227] rockchip-pm-domain
> ff310000.power-management:power-controller: sync_state() pending due
> to ff8a0000.i2s
> [ 13.305148] rockchip-pm-domain
> ff310000.power-management:power-controller: sync_state() pending due
> to ff8f0000.vop
> [ 13.306071] rockchip-pm-domain
> ff310000.power-management:power-controller: sync_state() pending due
> to ff900000.vop
> [ 13.307009] rockchip-pm-domain
> ff310000.power-management:power-controller: sync_state() pending due
> to ff940000.hdmi
> [ 13.307937] rockchip-pm-domain
> ff310000.power-management:power-controller: sync_state() pending due
> to ff9a0000.gpu
> [ 14.620509] ., OK
> [ 14.636949] IP-Config: Got DHCP answer from 10.66.16.15, my address
> is 10.66.30.7
> [ 14.637647] IP-Config: Complete:
> [ 14.637955] device=eth0, hwaddr=0a:fb:82:cd:ed:a8,
> ipaddr=10.66.30.7, mask=255.255.240.0, gw=10.66.16.1
> [ 14.638845] host=10.66.30.7, domain=lkftlab, nis-domain=(none)
> [ 14.639417] bootserver=0.0.0.0, rootserver=10.66.16.116, rootpath=
> [ 14.639440] nameserver0=10.66.16.15
> [ 14.641679] clk: Disabling unused clocks
> [ 14.646347] dw-apb-uart ff1a0000.serial: forbid DMA for kernel console
> [ 14.647091] check access for rdinit=/init failed: -2, ignoring
> [ 14.762496] VFS: Mounted root (nfs filesystem) on device 0:22.
> [ 14.763768] devtmpfs: mounted
> [ 14.775761] Freeing unused kernel memory: 4928K
> [ 14.776566] Run /sbin/init as init process
> [ 95.816464] random: crng init done
> [ 195.556677] nfs: server 10.66.16.116 not responding, still trying
> ..
> [ 195.556703] nfs: server 10.66.16.116 not responding, still trying
> [ 195.556869] nfs: server 10.66.16.116 not responding, still trying
> [ 195.557010] nfs: server 10.66.16.116 not responding, still trying
> [ 195.557055] nfs: server 10.66.16.116 not responding, still trying
> [ 195.557114] nfs: server 10.66.16.116 not responding, still trying
> [ 195.557166] nfs: server 10.66.16.116 not responding, still trying
> [ 195.557217] nfs: server 10.66.16.116 not responding, still trying
> [ 195.557269] nfs: server 10.66.16.116 not responding, still trying
> [ 195.557304] nfs: server 10.66.16.116 not responding, still trying
> [ 227.459759] nfs: server 10.66.16.116 OK
> [ 227.459868] nfs: server 10.66.16.116 OK
> [ 227.681008] nfs: server 10.66.16.116 OK
> [ 319.645474] nfs: server 10.66.16.116 OK
> [ 407.677657] nfs: server 10.66.16.116 OK
> [ 499.834818] nfs: server 10.66.16.116 OK
> [ 587.895692] nfs: server 10.66.16.116 OK
> [ 680.052774] nfs: server 10.66.16.116 OK
> [ 768.113810] nfs: server 10.66.16.116 OK
> [ 860.270785] nfs: server 10.66.16.116 OK
> #
> [ 948.331418] nfs: server 10.66.16.116 OK
> #
> [ 1096.679211] nfs: server 10.66.16.116 OK
> #
> [ 1274.856436] nfs: server 10.66.16.116 OK
> #
> [ 1488.985700] nfs: server 10.66.16.116 OK
>
>
> ## Source
> * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git
> * Project: https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250717/
> * Git sha: 024e09e444bd2b06aee9d1f3fe7b313c7a2df1bb
> * Git describe: 6.16.0-rc6-next-20250717
> * kernel version: next-20250717
> * Architectures: arm64 (rock-pi-4b)
> * Toolchains: gcc-13
> * Kconfigs: defconfig+64K page size
>
> ## Test
> * Test log: https://qa-reports.linaro.org/api/testruns/29168904/log_file/
> * Test LAVA: https://lkft.validation.linaro.org/scheduler/job/8364278#L924
> * Test run: https://regressions.linaro.org/lkft/linux-next-master/next-20250717/testruns/1662101/
> * Test plan: https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/tests/2zzwHDuV3xvZBKkAtqlmroSxuIS
> * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/2zzwEbz0aS3AtluE2oRQ9gMvFTY/
> * Kernel config:
> https://storage.tuxsuite.com/public/linaro/lkft/builds/2zzwEbz0aS3AtluE2oRQ9gMvFTY/config
>
>
> --
> Linaro LKFT
> https://lkft.linaro.org
