[Bug 104274] Unable to cleanly unload kernel module: BUG: unable to handle kernel NULL pointer dereference at 0000000000000258 (mutex_lock)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104274

--- Comment #16 from Sverd Johnsen <sverd.johnsen at googlemail.com> ---
hmm this is new

[41889.542562] Console: switching to colour dummy device 80x25
[41890.859216] [drm] amdgpu: finishing device.
[41891.096266] [TTM] Finalizing pool allocator
[41891.100313] [TTM] Finalizing DMA pool allocator
[41891.100326] [TTM] Zone  kernel: Used memory at exit: 0 kiB
[41891.100327] [TTM] Zone   dma32: Used memory at exit: 0 kiB
[41891.100328] [drm] amdgpu: ttm finalized
[41891.108164] BUG: unable to handle kernel paging request at ffffffffc0a31750
[41891.108167] PGD 2dd20a067 P4D 2dd20a067 PUD 2dd20c067 PMD 4897b7067 PTE 0
[41891.108170] Oops: 0010 [#1] PREEMPT SMP PTI
[41891.108171] Modules linked in: chash gpu_sched ttm arc4 md4 md5 sha512_ssse3
sha512_generic cmac cifs ccm nls_iso8859_1 nls_cp437 vfat fat msr
rpcsec_gss_krb5 nfsv4 cachefiles dns_resolver nfs lockd grace fscache
auth_rpcgss sunrpc af_packet macvtap macvlan bonding nf_log_ipv6 nf_log_ipv4
nf_log_common nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_log
nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nft_limit
nft_ct nf_conntrack xfrm_user xfrm_algo cls_u32 nft_counter nft_meta
nft_set_bitmap sch_htb nft_set_hash nft_set_rbtree raid0 intel_pmc_core
x86_pkg_temp_thermal intel_powerclamp kvm_intel md_mod vhost_net tun vhost tap
kvm snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi bcache
snd_hda_intel snd_hda_codec snd_hwdep intel_cstate intel_uncore snd_hda_core
[41891.108194]  cdc_ether intel_rapl_perf r8152 efi_pstore snd_pcm plusb mei_me
usbnet input_leds mei mii led_class efivars tpm_crb binfmt_misc crypto_user
efivarfs algif_skcipher af_alg mousedev joydev psmouse crct10dif_pclmul
crc32_pclmul ghash_clmulni_intel pcspkr tpm_tis tpm_tis_core tpm shpchp thermal
fan i8042 rng_core acpi_pad vfio_pci irqbypass vfio_virqfd vfio_iommu_type1
vfio atkbd libps2 [last unloaded: amdgpu]
[41891.108208] CPU: 0 PID: 28737 Comm: zsh Not tainted 4.17.1-2-ph #2
[41891.108208] Hardware name: Gigabyte Technology Co., Ltd.
Z170X-UD3/Z170X-UD3-CF, BIOS F23d 12/01/2017
[41891.108210] RIP: 0010:0xffffffffc0a31750
[41891.108211] RSP: 0018:ffff912fdec03f10 EFLAGS: 00010292
[41891.108212] RAX: ffffffffc0a31750 RBX: ffff912fdec20200 RCX:
ffff912dbf11f390
[41891.108213] RDX: ffff912f0fd6b990 RSI: ffff912fdec03f20 RDI:
ffff912dbf11fd90
[41891.108214] RBP: ffffffffa9223480 R08: ffff912fdec1bc00 R09:
0000000000000100
[41891.108215] R10: 0000000000000080 R11: 00002619991f4040 R12:
ffff912fdec20238
[41891.108215] R13: 000000000000000a R14: 7fffffffffffffff R15:
0000000000000202
[41891.108216] FS:  00007febd04cff00(0000) GS:ffff912fdec00000(0000)
knlGS:0000000000000000
[41891.108217] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[41891.108218] CR2: ffffffffc0a31750 CR3: 0000000468368002 CR4:
00000000003606f0
[41891.108219] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[41891.108220] Call Trace:
[41891.108220] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[41891.108222]  <IRQ>
[41891.108224]  ? rcu_process_callbacks+0x1f9/0x3c0
[41891.108226]  ? __do_softirq+0xd0/0x1f4
[41891.108228]  ? irq_exit+0x7c/0xb0
[41891.108229]  ? smp_apic_timer_interrupt+0x59/0x90
[41891.108231]  </IRQ>
[41891.108231]  ? apic_timer_interrupt+0xf/0x20
[41891.108233]  ? privileged_wrt_inode_uidgid+0x12/0x30
[41891.108235]  ? generic_permission+0xf4/0x190
[41891.108236]  ? inode_permission+0x24/0x130
[41891.108237]  ? link_path_walk+0x6c/0x530
[41891.108239]  ? path_lookupat.isra.10+0x92/0x200
[41891.108241]  ? unmap_page_range+0x5ed/0x890
[41891.108242]  ? filename_lookup.part.18+0x9b/0x170
[41891.108244]  ? __check_object_size+0xf6/0x17b
[41891.108246]  ? strncpy_from_user+0x4c/0x170
[41891.108247]  ? vfs_statx+0x6e/0xd0
[41891.108249]  ? __audit_syscall_exit+0x22b/0x2a0
[41891.108250]  ? __se_sys_newstat+0x39/0x70
[41891.108251]  ? syscall_trace_enter+0x1d9/0x240
[41891.108253]  ? vm_munmap+0x64/0x90
[41891.108254]  ? do_syscall_64+0x43/0xf0
[41891.108255]  ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[41891.108256] Code:  Bad RIP value.
[41891.108259] RIP: 0xffffffffc0a31750 RSP: ffff912fdec03f10
[41891.108260] CR2: ffffffffc0a31750
[41891.108262] ---[ end trace 51bac120fccff9bb ]---
[41891.230170] Kernel panic - not syncing: Fatal exception in interrupt
[41891.230175] Kernel Offset: 0x27000000 from 0xffffffff81000000 (relocation
range: 0xffffffff80000000-0xffffffffbfffffff)

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