WARNING: at fs/nfs/nfs3xdr.c:188 encode_filename3 on rk3399

[Naresh Kamboju]

The following kernel warning has been noticed while running LTP statvfs01
testcase on arm64 device rk3399-rock-pi-4b with NFS mounted test setup and
started from Linux next-20240522 tag and till next-20240529.

Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>

Test log:
-----
mke2fs 1.47.0 (5-Feb-2023)
tst_test.c:1131: TINFO: Mounting /dev/loop0 to /scratch/ltp-9gvw[
5211.161721] EXT4-fs (loop0): mounting ext2 file system using the ext4
subsystem
F2L8n6/LTP_stadLH0F7/mntpoint fstyp=ext2 flags=0
[ 5211.169391] EXT4-fs (loop0): mounted filesystem
af9dfac2-88f6-453d-9d02-c14cc888a51d r/w without journal. Quota mode:
none.
statvfs01.c:32: TPASS: statvfs(TEST_PATH, &buf) passed
[ 5211.175518] ------------[ cut here ]------------
statvfs01.c:44: TPASS: creat(valid_fname, 0444) returned fd 3
[ 5211.175938] WARNING: CPU: 5 PID: 786885 at fs/nfs/nfs3xdr.c:188
encode_filename3+0x4c/0x60
[ 5211.175962] Modules linked in: tun overlay btrfs blake2b_generic
libcrc32c xor xor_neon raid6_pq zstd_compress hantro_vpu
snd_soc_hdmi_codec brcmfmac panfrost v4l2_vp9 snd_soc_simple_card
dw_hdmi_i2s_audio dw_hdmi_cec crct10dif_ce snd_soc_audio_graph_card
snd_soc_spdif_tx brcmutil drm_shmem_helper v4l2_h264
snd_soc_simple_card_utils gpu_sched rockchipdrm hci_uart analogix_dp
btqca v4l2_mem2mem dw_mipi_dsi btbcm videobuf2_dma_contig dw_hdmi cec
phy_rockchip_pcie cfg80211 rtc_rk808 bluetooth videobuf2_memops
snd_soc_rockchip_i2s drm_display_helper drm_dma_helper videobuf2_v4l2
rfkill rockchip_saradc videobuf2_common drm_kms_helper snd_soc_es8316
industrialio_triggered_buffer rockchip_thermal kfifo_buf
coresight_cpu_debug pcie_rockchip_host fuse drm backlight dm_mod
ip_tables x_tables
[ 5211.176075] CPU: 5 PID: 786885 Comm: statvfs01 Not tainted
6.10.0-rc1-next-20240529 #1
[ 5211.176083] Hardware name: Radxa ROCK Pi 4B (DT)
[ 5211.176086] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 5211.176092] pc : encode_filename3+0x4c/0x60
[ 5211.176100] lr : nfs3_xdr_enc_create3args+0x4c/0x108
[ 5211.176109] sp : ffff80008b1ab7a0
[ 5211.176111] x29: ffff80008b1ab7a0 x28: ffff80008b1abc40 x27: 0000000000000001
[ 5211.176120] x26: 0000000000440040 x25: 0000000000000000 x24: ffff800081492c70
[ 5211.176128] x23: 0000000000000100 x22: ffff00000a274010 x21: ffff00002d1b9800
[ 5211.176136] x20: ffff00000a274010 x19: 0000000000000100 x18: 0000000000000000
[ 5211.176143] x17: 0000000000000000 x16: 0000000000000000 x15: 6262626262626262
[ 5211.176150] x14: 6262626262626262 x13: 90d1d5e100000000 x12: 40a645896bf3b486
[ 5211.176158] x11: a16c80bf234c2437 x10: 5702b6d600000000 x9 : ffff80008059040c
[ 5211.176165] x8 : a16c80bf234c2437 x7 : 5702b6d600000000 x6 : 600aa44181070001
[ 5211.176173] x5 : ffff00003109d080 x4 : ffff0000661a4232 x3 : ffff8000805903c0
[ 5211.176180] x2 : 0000000000000100 x1 : ffff00000a274010 x0 : ffff80008b1ab828
[ 5211.176187] Call trace:
[ 5211.176190]  encode_filename3+0x4c/0x60
[ 5211.176198]  nfs3_xdr_enc_create3args+0x4c/0x108
[ 5211.176206]  rpcauth_wrap_req_encode+0x24/0x40
[ 5211.176216]  rpcauth_wrap_req+0x28/0x40
[ 5211.176223]  call_encode+0x130/0x358
[ 5211.176231]  __rpc_execute+0xb4/0x638
[ 5211.176238]  rpc_execute+0x168/0x1e8
[ 5211.176244]  rpc_run_task+0x12c/0x1d8
[ 5211.176251]  rpc_call_sync+0x70/0xe0
[ 5211.176257]  nfs3_rpc_wrapper+0x48/0x98
[ 5211.176264]  nfs3_proc_create+0xb8/0x2d0
[ 5211.176272]  nfs_do_create+0x9c/0x1f0
[ 5211.176280]  nfs_atomic_open_v23+0x98/0xd8
[ 5211.176288]  path_openat+0x6d4/0xf50
[ 5211.176296]  do_filp_open+0xa4/0x160
[ 5211.176301]  do_sys_openat2+0xcc/0x108
[ 5211.176310]  __arm64_sys_openat+0x6c/0xc0
[ 5211.176317]  invoke_syscall+0x50/0x128
[ 5211.176327]  el0_svc_common.constprop.0+0x48/0xf0
[ 5211.176335]  do_el0_svc+0x24/0x38
[ 5211.176342]  el0_svc+0x3c/0x108
[ 5211.176351]  el0t_64_sync_handler+0x120/0x130
[ 5211.176355]  el0t_64_sync+0x190/0x198
[ 5211.176361] ---[ end trace 0000000000000000 ]---
statvfs01.c:48: TFAIL: creat(toolong_fname, 0444) expected ENAMETOOLONG: EIO (5)
[ 5211.432692] EXT4-fs (loop0): unmounting filesystem
af9dfac2-88f6-453d-9d02-c14cc888a51d.

metadata:
----
  git_describe: next-20240522 and next-20240529
  git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
  arch: arm64
  test: LTP syscalls statvfs01

Links:
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240529/testrun/24131502/suite/log-parser-test/test/check-kernel-exception/log
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240529/testrun/24131502/suite/log-parser-test/test/check-kernel-warning-4a4050f2ba224c26acd76ee5aebc8fa78eb1cf8c315c763fd7b55e6a1d6e38b7/history/
 - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240529/testrun/24131502/suite/log-parser-test/tests/


--
Linaro LKFT
https://lkft.linaro.org