Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008

From: Naresh Kamboju
Date: Mon Aug 22 2022 - 10:01:28 EST


The arm64 Qualcomm db410c device boot failed intermittently on
Linux next-20220822 and Linux mainline 6.0.0-rc1.

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

[ 0.000000] Linux version 6.0.0-rc1 (tuxmake@tuxmake)
(aarch64-linux-gnu-gcc (Debian 11.3.0-3) 11.3.0, GNU ld (GNU Binutils
for Debian) 2.38.90.20220713) #1 SMP PREEMPT @1661110347
[ 0.000000] Machine model: Qualcomm Technologies, Inc. APQ 8016 SBC
<trim>
[ 3.609382] Loading compiled-in X.509 certificates
[ 3.702306] Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000008
[ 3.702380] Mem abort info:
[ 3.710225] ESR = 0x0000000096000004
[ 3.711454] s3: Bringing 0uV into 375000-375000uV
[ 3.712713] EC = 0x25: DABT (current EL), IL = 32 bits
[ 3.717378] s4: Bringing 0uV into 1800000-1800000uV
[ 3.721289] SET = 0, FnV = 0
[ 3.727634] l1: Bringing 0uV into 375000-375000uV
[ 3.731266] EA = 0, S1PTW = 0
[ 3.731278] FSC = 0x04: level 0 translation fault
[ 3.735046] l2: Bringing 0uV into 1200000-1200000uV
[ 3.739166] Data abort info:
[ 3.742737] l4: Bringing 0uV into 1750000-1750000uV
[ 3.746980] ISV = 0, ISS = 0x00000004
[ 3.746991] CM = 0, WnR = 0
[ 3.752504] l5: Bringing 0uV into 1750000-1750000uV
[ 3.754966] [0000000000000008] user address but active_mm is swapper
[ 3.754981] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[ 3.754991] Modules linked in:
[ 3.755002] CPU: 1 PID: 10 Comm: kworker/u8:1 Not tainted 6.0.0-rc1 #1
[ 3.760279] l6: Bringing 0uV into 1800000-1800000uV
[ 3.763370] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT)
[ 3.763378] Workqueue: events_unbound deferred_probe_work_func
[ 3.767152] l7: Bringing 0uV into 1750000-1750000uV
[ 3.771188] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 3.771199] pc : pl011_probe+0x30/0x154
[ 3.778480] l8: Bringing 0uV into 1750000-1750000uV
[ 3.783073] lr : amba_probe+0x11c/0x1b0
[ 3.783086] sp : ffff800008073b50
[ 3.783090] x29: ffff800008073b50 x28: 0000000000000000
[ 3.787102] l9: Bringing 0uV into 1750000-1750000uV
[ 3.792712] x27: 0000000000000000
[ 3.792720] x26: ffff80000af7a368 x25: ffff00000341f00d x24: ffff00003fcdce60
[ 3.798382] l10: Bringing 0uV into 1750000-1750000uV
[ 3.804432] x23: ffff80000adf0fb8 x22: 0000000000000000 x21: ffff000003c02800
[ 3.804449] x20: ffff000003c029b0 x19: 0000000000000000
[ 3.811003] l11: Bringing 0uV into 1750000-1750000uV
[ 3.814850] x18: ffffffffffffffff
[ 3.814858] x17: 0000000000000000 x16: ffff00003fc4d040 x15: ffff000003c6fb8a
[ 3.814874] x14: ffffffffffffffff
[ 3.822730] l12: Bringing 0uV into 1750000-1750000uV
[ 3.825611] x13: 00000000000005cf x12: 071c71c71c71c71c
[ 3.825623] x11: 00000000000005cf x10: 0000000000000c00 x9 : ffff8000088ead60
[ 3.831391] l13: Bringing 0uV into 1750000-1750000uV
[ 3.834290]
[ 3.834293] x8 : ffff00000367ad60 x7 : ffff00003fc69ccc x6 : 0000000000000001
[ 3.834310] x5 : ffff80000aa8f000
[ 3.838735] l14: Bringing 0uV into 1750000-1750000uV
[ 3.842798] x4 : ffff80000aa8f2e8 x3 : 0000000000000000
[ 3.842810] x2 : ffff80000b035380 x1 : 0000000000000000 x0 : ffff000003c02800
[ 3.848640] l15: Bringing 0uV into 1750000-1750000uV
[ 3.851134]
[ 3.851138] Call trace:
[ 3.859837] l16: Bringing 0uV into 1750000-1750000uV
[ 3.863375] pl011_probe+0x30/0x154
[ 3.863389] amba_probe+0x11c/0x1b0
[ 3.863400] really_probe+0xc8/0x3e0
[ 3.871415] l17: Bringing 0uV into 3300000-3300000uV
[ 3.875438] __driver_probe_device+0x84/0x190
[ 3.875450] driver_probe_device+0x44/0x100
[ 3.881633] l18: Bringing 0uV into 1750000-1750000uV
[ 3.883860] __device_attach_driver+0xa4/0x150
[ 3.989109] bus_for_each_drv+0x84/0xe0
[ 3.992982] __device_attach+0xb0/0x1f0
[ 3.996714] device_initial_probe+0x20/0x30
[ 4.000533] bus_probe_device+0xa4/0xb0
[ 4.004699] deferred_probe_work_func+0xa8/0xfc
[ 4.008521] process_one_work+0x1dc/0x450
[ 4.013034] worker_thread+0x2d0/0x450
[ 4.017200] kthread+0x108/0x110
[ 4.020844] ret_from_fork+0x10/0x20
[ 4.024237] Code: 910e0042 d2800013 a9025bf5 aa0003f5 (f9400436)
[ 4.027801] ---[ end trace 0000000000000000 ]---
[ 137.808813] random: crng init done

ref:
https://lkft.validation.linaro.org/scheduler/job/5419258#L2278

metadata:
git_ref: master
git_repo: https://gitlab.com/Linaro/lkft/mirrors/torvalds/linux-mainline
git_sha: e3f259d33c0ebae1b6e4922c7cdb50e864c81928
git_describe: v6.0-rc1-409-ge3f259d33c0e
kernel_version: 6.0.0-rc1
kernel-config: https://builds.tuxbuild.com/2DgA4YUQ8t1rgsLXKtyXRLM7wdg/config
vmlinux: https://builds.tuxbuild.com/2DgA4YUQ8t1rgsLXKtyXRLM7wdg/vmlinux.xz
System.map: https://builds.tuxbuild.com/2DgA4YUQ8t1rgsLXKtyXRLM7wdg/System.map
build-url: https://gitlab.com/Linaro/lkft/mirrors/torvalds/linux-mainline/-/pipelines/618915641
artifact-location: https://builds.tuxbuild.com/2DgA4YUQ8t1rgsLXKtyXRLM7wdg
toolchain: gcc-11

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