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

[bugzilla-daemon@freedesktop.org]

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

--- Comment #1 from Sverd Johnsen <sverd.johnsen@googlemail.com> ---
with 4.15rc (linus tree from today)

[   78.807441] [drm] amdgpu: finishing device.
[   78.887439] amdgpu: [powerplay] 
[   78.887454] amdgpu: [powerplay] 
[   78.968349] BUG: unable to handle kernel NULL pointer dereference at        
  (null)
[   78.968352] IP:           (null)
[   78.968352] PGD 45af1d067 P4D 45af1d067 PUD 45b065067 PMD 0 
[   78.968354] Oops: 0010 [#1] PREEMPT SMP
[   78.968355] Modules linked in: amdgpu(-) chash ttm cls_u32 sch_htb af_packet
nft_limit nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nf_log_ipv6
nf_log_ipv4 nf_log_common nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4
nf_defrag_ipv4 nft_log nft_ct nf_conntrack xfrm_user xfrm_algo nft_counter
nft_meta nft_set_bitmap nft_set_hash nft_set_rbtree nf_tables_netdev
nf_tables_inet nf_tables_ipv6 nf_tables_ipv4 dm_cache_smq dm_cache
dm_bio_prison dm_persistent_data dm_bufio libcrc32c bcache x86_pkg_temp_thermal
intel_powerclamp kvm_intel vhost_net raid0 raid1 tun vhost tap kvm
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel
snd_hda_codec md_mod snd_hwdep irqbypass snd_hda_core intel_cstate mei_me
efi_pstore intel_uncore plusb mei input_leds usbnet snd_pcm intel_rapl_perf
[   78.968375]  led_class mii efivars tpm_crb usbip_host usbip_core efivarfs
algif_skcipher af_alg mousedev joydev psmouse atkbd libps2 crct10dif_pclmul
crc32_pclmul ghash_clmulni_intel pcspkr tpm_tis shpchp tpm_tis_core thermal fan
tpm i8042 acpi_pad vfat fat
[   78.968383] CPU: 1 PID: 1493 Comm: rmmod Not tainted 4.15.0-1-rc #2
[   78.968384] Hardware name: Gigabyte Technology Co., Ltd.
Z170X-UD3/Z170X-UD3-CF, BIOS F23d 12/01/2017
[   78.968384] RIP: 0010:          (null)
[   78.968385] RSP: 0018:ffff9c6a8281bd00 EFLAGS: 00010286
[   78.968386] RAX: ffff9294612676e0 RBX: ffff92948b2a3300 RCX:
000000018020001e
[   78.968386] RDX: 000000018020001f RSI: 0000000000005c02 RDI:
ffff929461267120
[   78.968387] RBP: ffff9294658a6c90 R08: 0000000000000001 R09:
ffff929476247000
[   78.968387] R10: 0000000000000000 R11: 0000000000000033 R12:
0000000000000003
[   78.968388] R13: ffff929453e42f18 R14: 0000000000000000 R15:
ffffffffc09b13e8
[   78.968389] FS:  00007f0d7f498b80(0000) GS:ffff92949ec80000(0000)
knlGS:0000000000000000
[   78.968389] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   78.968390] CR2: 0000000000000000 CR3: 000000046b3f8001 CR4:
00000000003606e0
[   78.968390] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[   78.968391] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[   78.968391] Call Trace:
[   78.968429]  ? destroy+0x1d/0xa0 [amdgpu]
[   78.968440]  ? dal_i2caux_destruct+0x58/0x90 [amdgpu]
[   78.968449]  ? destroy+0x10/0x30 [amdgpu]
[   78.968458]  ? dal_i2caux_destroy+0x17/0x30 [amdgpu]
[   78.968467]  ? destruct+0x89/0x110 [amdgpu]
[   78.968476]  ? dc_destroy+0xc/0x20 [amdgpu]
[   78.968488]  ? dm_hw_fini+0x19/0x20 [amdgpu]
[   78.968493]  ? amdgpu_fini+0x90/0x2f0 [amdgpu]
[   78.968499]  ? amdgpu_device_fini+0x5f/0x1c0 [amdgpu]
[   78.968505]  ? amdgpu_driver_unload_kms+0x45/0x90 [amdgpu]
[   78.968507]  ? drm_dev_unregister+0x37/0xe0
[   78.968512]  ? amdgpu_pci_remove+0x14/0x40 [amdgpu]
[   78.968514]  ? pci_device_remove+0x31/0xa0
[   78.968516]  ? device_release_driver_internal+0x152/0x210
[   78.968517]  ? driver_detach+0x32/0x70
[   78.968518]  ? bus_remove_driver+0x4c/0xc0
[   78.968519]  ? pci_unregister_driver+0x25/0xa0
[   78.968529]  ? amdgpu_exit+0x11/0x3b6 [amdgpu]
[   78.968530]  ? SyS_delete_module+0x19c/0x2a0
[   78.968532]  ? do_syscall_64+0x48/0xe0
[   78.968533]  ? entry_SYSCALL64_slow_path+0x25/0x25
[   78.968534] Code:  Bad RIP value.
[   78.968536] RIP:           (null) RSP: ffff9c6a8281bd00
[   78.968537] CR2: 0000000000000000
[   78.968538] ---[ end trace bbf73cfe467dd4c8 ]---

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