[next] arm64: db410c: Internal error: Oops: 96000004 - pc : sysfs_kf_seq_show

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Following kernel crash reported while booting arm64 db410c board with
Linux next-20220614 [1] kfence enabled on this kernel.

CONFIG_KFENCE=y


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

Boot log:
---------
[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd030]
[    0.000000] Linux version 5.19.0-rc2-next-20220614
(tuxmake@tuxmake) (aarch64-linux-gnu-gcc (Debian 11.3.0-3) 11.3.0, GNU
ld (GNU Binutils for Debian) 2.38) #1 SMP PREEMPT @1655189659
[    0.000000] Machine model: Qualcomm Technologies, Inc. APQ 8016 SBC
[    0.000000] efi: UEFI not found.
[    0.000000] [Firmware Bug]: Kernel image misaligned at boot, please
fix your bootloader!
<trim>
[    0.000000] kfence: initialized - using 2097152 bytes for 255
objects at 0x(____ptrval____)-0x(____ptrval____)
<trim>
[   11.317288] Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000000
[   11.317361] Mem abort info:
[   11.317906] Unable to handle kernel paging request at virtual
address 0000000029f63007
[   11.328825] Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000009
[   11.334704]   ESR = 0x0000000096000004
[   11.343115] Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000000
[   11.357163] Mem abort info:
[   11.357217]   ESR = 0x0000000096000004
[   11.359935] Mem abort info:
[   11.369085] Mem abort info:
[   11.369138]   ESR = 0x0000000096000004
[   11.373564]   EC = 0x25: DABT (current EL), IL = 32 bits
[   11.374530]   SET = 0, FnV = 0
[   11.382591]   EC = 0x25: DABT (current EL), IL = 32 bits
[   11.382864]   SET = 0, FnV = 0
[   11.400484]   ESR = 0x0000000096000004
[   11.411713]   EC = 0x25: DABT (current EL), IL = 32 bits
[   11.411776]   SET = 0, FnV = 0
[   11.422177]   EA = 0, S1PTW = 0
[   11.422234]   FSC = 0x04: level 0 translation fault
[   11.422724]   EC = 0x25: DABT (current EL), IL = 32 bits
[   11.424129] Data abort info:
[   11.428397]   EA = 0, S1PTW = 0
[   11.428416]   FSC = 0x04: level 0 translation fault
[   11.428427] Data abort info:
[   11.428434]   ISV = 0, ISS = 0x00000004
[   11.428442]   CM = 0, WnR = 0
[   11.428451] user pgtable: 4k pages, 48-bit VAs, pgdp=00000000854b8000
[   11.428464] [0000000029f63007] pgd=0000000000000000, p4d=0000000000000000
[   11.428494] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[   11.428503] Modules linked in: venus_enc venus_dec
videobuf2_dma_contig crct10dif_ce adv7511(+) cec qcom_wcnss_pil
snd_soc_msm8916_analog qcom_pon qcom_spmi_temp_alarm rtc_pm8xxx
qcom_spmi_vadc snd_soc_lpass_apq8016 qcom_vadc_common
snd_soc_msm8916_digital snd_soc_lpass_cpu snd_soc_apq8016_sbc
snd_soc_lpass_platform qcom_q6v5_mss snd_soc_qcom_common qcom_pil_info
msm qcom_camss qcom_q6v5 gpu_sched qcom_sysmon drm_dp_aux_bus
venus_core qcom_common videobuf2_dma_sg v4l2_mem2mem v4l2_fwnode
qcom_glink_smem v4l2_async videobuf2_memops qmi_helpers videobuf2_v4l2
mdt_loader qnoc_msm8916 drm_display_helper videobuf2_common
i2c_qcom_cci qcom_rng qcom_stats icc_smd_rpm rfkill display_connector
drm_kms_helper drm socinfo rmtfs_mem qrtr fuse
[   11.428683] CPU: 3 PID: 312 Comm: systemd-udevd Tainted: G        W
        5.19.0-rc2-next-20220614 #1
[   11.428694] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT)
[   11.428699] pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[   11.428709] pc : sysfs_kf_seq_show+0x3c/0x130
[   11.428724] lr : kernfs_seq_show+0x38/0x44
[   11.428735] sp : ffff80000b7ebbf0
[   11.428739] x29: ffff80000b7ebbf0 x28: 0000000000000001 x27: 0000000000400cc0
[   11.428753] x26: 000000007ffff000 x25: ffff000005581290 x24: ffff000005581280
[   11.428767] x23: 0000000000000000 x22: ffff0000056dd520 x21: ffff000004413d00
[   11.428780] x20: 0000000029f62fff x19: ffff000005581258 x18: 0000000000000000
[   11.428793] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[   11.428806] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
[   11.428819] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff8000084b0ca8
[   11.428832] x8 : 0000000000000000 x7 : 0000000000000200 x6 : 0000000000000000
[   11.428845] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff000004413d00
[   11.428857] x2 : ffff8000084b2e64 x1 : 0000000000000001 x0 : ffff000002368a00
[   11.428872] Call trace:
[   11.428875]  sysfs_kf_seq_show+0x3c/0x130
[   11.428884]  kernfs_seq_show+0x38/0x44
[   11.428895]  seq_read_iter+0x1c4/0x4c0
[   11.428905]  kernfs_fop_read_iter+0x14c/0x1d0
[   11.428917]  new_sync_read+0xdc/0x160
[   11.428927]  vfs_read+0x19c/0x1e4
[   11.428937]  ksys_read+0x74/0x100
[   11.428947]  __arm64_sys_read+0x28/0x3c
[   11.428956]  invoke_syscall+0x50/0x120
[   11.428968]  el0_svc_common.constprop.0+0x104/0x124
[   11.428980]  do_el0_svc+0x3c/0xcc
[   11.428990]  el0_svc+0x38/0xc0
[   11.429003]  el0t_64_sync_handler+0xbc/0x140
[   11.429013]  el0t_64_sync+0x18c/0x190
[   11.429026] Code: f9400400 f9403016 f94016d4 b4000054 (f9400694)
[   11.429034] ---[ end trace 0000000000000000 ]---
[   11.430509]   EA = 0, S1PTW = 0
[   11.436545]   SET = 0, FnV = 0
[   11.443175] Unable to handle kernel paging request at virtual
address 0000000029f63007
[   11.445643]   EA = 0, S1PTW = 0
[   11.452829] Mem abort info:
[   11.455190]   FSC = 0x04: level 0 translation fault
[   11.458711]   ISV = 0, ISS = 0x00000004
[   11.458728]   CM = 0, WnR = 0
[   11.458738] user pgtable: 4k pages, 48-bit VAs, pgdp=000000008223b000
[   11.458751] [0000000000000009] pgd=0000000000000000, p4d=0000000000000000
[   11.458780] Internal error: Oops: 96000004 [#2] PREEMPT SMP
[   11.458790] Modules linked in: pm8916_wdt(+) venus_enc venus_dec
videobuf2_dma_contig crct10dif_ce adv7511(+) cec qcom_wcnss_pil
snd_soc_msm8916_analog qcom_pon qcom_spmi_temp_alarm rtc_pm8xxx
qcom_spmi_vadc snd_soc_lpass_apq8016 qcom_vadc_common
snd_soc_msm8916_digital snd_soc_lpass_cpu snd_soc_apq8016_sbc
snd_soc_lpass_platform qcom_q6v5_mss snd_soc_qcom_common qcom_pil_info
msm qcom_camss qcom_q6v5 gpu_sched qcom_sysmon drm_dp_aux_bus
venus_core qcom_common videobuf2_dma_sg v4l2_mem2mem v4l2_fwnode
qcom_glink_smem v4l2_async videobuf2_memops qmi_helpers videobuf2_v4l2
mdt_loader qnoc_msm8916 drm_display_helper videobuf2_common
i2c_qcom_cci qcom_rng qcom_stats icc_smd_rpm rfkill display_connector
drm_kms_helper drm socinfo rmtfs_mem qrtr fuse
[   11.458973] CPU: 1 PID: 314 Comm: systemd-udevd Tainted: G      D W
        5.19.0-rc2-next-20220614 #1
[   11.458982] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT)
[   11.458987] pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[   11.458996] pc : sysfs_kf_seq_show+0x3c/0x130
[   11.459011] lr : kernfs_seq_show+0x38/0x44


metadata:
  git_ref: master
  git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
  git_sha: 35d872b9ea5b3ad784d7479ea728dcb688df2db7
  git_describe: next-20220614
  kernel_version: 5.19.0-rc2
  kernel-config: https://builds.tuxbuild.com/2AYbNeAYdcbtKeaEoYNvOAwsMQf/config
  build-url: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next/-/pipelines/563047963
  artifact-location: https://builds.tuxbuild.com/2AYbNeAYdcbtKeaEoYNvOAwsMQf
  System.map: https://builds.tuxbuild.com/2AYbNeAYdcbtKeaEoYNvOAwsMQf/System.map
  vmlinux: https://builds.tuxbuild.com/2AYbNeAYdcbtKeaEoYNvOAwsMQf/vmlinux.xz
  toolchain: gcc-11



[1]
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20220614/testrun/10156029/suite/ltp-syscalls-tests/test/bpf_prog04/details/


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



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