[5.10] [Bugfix] : 修复inspur自研显卡驱动造成的内核崩溃问题 · Pull Request !2336 · anolis/cloud-kernel

bugzilla:https://bugzilla.openanolis.cn/show_bug.cgi?id=7042

description：
在使用inspur自研显卡驱动时会触发内核panic
[   25.978756] BUG: kernel NULL pointer dereference, address: 0000000000000104
[   25.979093] #PF: supervisor read access in kernel mode
[   25.979344] #PF: error_code(0x0000) - not-present page
[   25.979595] PGD 0 P4D 0
[   25.979725] Oops: 0000 [#1] SMP NOPTI
[   25.979908] CPU: 0 PID: 578 Comm: kworker/0:1 Not tainted 5.10.134-15.2.6.kos5.x86_64 #1
[   25.980298] Hardware name: Inspur NF5280M6/NF5280M6, BIOS 08.02.00 09/04/2023
[   25.980647] Workqueue: events work_for_cpu_fn
[   25.980865] RIP: 0010:kobject_get+0x9/0x70
[   25.981067] Code: 9f 48 c7 c7 00 d8 32 a0 48 c7 c6 87 02 3b 9f e8 3d cb fe ff 48 89 df 5b e9 f4 f7 d4 ff 0f 1f 40 00 53 48 89 fb 48 85 ff 74 1f <f6> 47 3c 01 74 22 48 8d 7b 38 b8 01 00 00 00 f0 0f c1 43 38 85 c0
[   25.981962] RSP: 0000:ffffb4045a43fd10 EFLAGS: 00010202
[   25.982218] RAX: ffff9431f5985200 RBX: 00000000000000c8 RCX: 0000000000000000
[   25.982563] RDX: ffff9431f13785f8 RSI: ffffffff9e71e730 RDI: 00000000000000c8
[   25.982908] RBP: ffff9431f5936560 R08: 0000000000000100 R09: ffff9431f5985200
[   25.983252] R10: ffff9431f354f6c8 R11: ffff9431f13785fd R12: 00000000000000c8
[   25.983596] R13: ffff9431f5936018 R14: ffff9431f5936040 R15: ffffb4045b58bb40
[   25.983941] FS:  0000000000000000(0000) GS:ffff952d3e600000(0000) knlGS:0000000000000000
[   25.984350] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.984629] CR2: 0000000000000104 CR3: 0000010090aba004 CR4: 0000000000770ef0
[   25.984974] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.985318] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.985663] PKRU: 55555554
[   25.985799] Call Trace:
[   25.985929]  device_add+0xcd/0x7c0
[   25.986104]  i2c_register_adapter+0xf6/0x640 [i2c_core]
[   25.986362]  ? i2c_register_adapter+0x640/0x640 [i2c_core]
[   25.986630]  __i2c_bit_add_bus+0x3d/0x2a0 [i2c_algo_bit]
[   25.986891]  inspur_vdac_init+0x23/0x120 [inspur_drm]
[   25.987141]  inspur_load+0x1b8/0x260 [inspur_drm]
[   25.987373]  inspur_pci_probe+0xbc/0x130 [inspur_drm]
[   25.987621]  local_pci_probe+0x3f/0x80
[   25.987807]  work_for_cpu_fn+0x13/0x20
[   25.987994]  process_one_work+0x19b/0x340
[   25.988193]  worker_thread+0x1c3/0x370
[   25.988379]  ? process_one_work+0x340/0x340
[   25.988585]  kthread+0x114/0x130
[   25.988746]  ? __kthread_cancel_work+0x50/0x50
[   25.988969]  ret_from_fork+0x1f/0x30
[   25.989146] Modules linked in: llc inspur_drm(+) drm_vram_helper drm_ttm_helper i2c_algo_bit ttm drm_kms_helper syscopyarea crct10dif_pclmul sysfillrect crc32_pclmul sysimgblt fb_sys_fops ghash_clmulni_intel mlx5_core(+) ahci(+) drm libahci mlxfw megaraid_sas i40e(+) pci_hyperv_intf i2c_core libata wmi uas usb_storage sunrpc lrw dm_crypt dm_round_robin dm_multipath dm_snapshot dm_bufio dm_mirror dm_region_hash dm_log dm_zero dm_mod linear raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq libcrc32c crc32c_intel raid1 raid0 iscsi_ibft squashfs cramfs be2iscsi bnx2i cnic uio cxgb4i cxgb4 tls libcxgbi libcxgb qla4xxx iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi

类型	指派人员	状态
审查	xunlei	已完成 (0/0人)
测试	小龙已测试通过	已完成 (1/1人)

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