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0d427f6c29
This fixes regression on device unplug and/or driver unload.
[ 65.681501 < 0.000004>] BUG: kernel NULL pointer dereference, address: 0000000000000008
[ 65.681504 < 0.000003>] #PF: supervisor write access in kernel mode
[ 65.681506 < 0.000002>] #PF: error_code(0x0002) - not-present page
[ 65.681507 < 0.000001>] PGD 7c9437067 P4D 7c9437067 PUD 7c9db7067 PMD 0
[ 65.681511 < 0.000004>] Oops: 0002 [#1] SMP NOPTI
[ 65.681512 < 0.000001>] CPU: 8 PID: 127 Comm: kworker/8:1 Tainted: G W O 5.9.0-rc2-dev+ #59
[ 65.681514 < 0.000002>] Hardware name: System manufacturer System Product Name/PRIME X470-PRO, BIOS 4406 02/28/2019
[ 65.681525 < 0.000011>] Workqueue: events drm_connector_free_work_fn [drm]
[ 65.681535 < 0.000010>] RIP: 0010:drm_atomic_private_obj_fini+0x11/0x60 [drm]
[ 65.681537 < 0.000002>] Code: de 4c 89 e7 e8 70 f2 ba f8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 90 0f 1f 44 00 00 48 8b 47 08 48 8b 17 55 48 89 e5 53 <48> 89 42 08 48 89 10 48 b8 00 01 00 00 00 00 ad de 48 89 fb 48 89
[ 65.681541 < 0.000004>] RSP: 0018:ffffa5fa805efdd8 EFLAGS: 00010246
[ 65.681542 < 0.000001>] RAX: 0000000000000000 RBX: ffff9a4b094654d8 RCX: 0000000000000000
[ 65.681544 < 0.000002>] RDX: 0000000000000000 RSI: ffffffffba197bc2 RDI: ffff9a4b094654d8
[ 65.681545 < 0.000001>] RBP: ffffa5fa805efde0 R08: ffffffffba197b82 R09: 0000000000000040
[ 65.681547 < 0.000002>] R10: ffffa5fa805efdc8 R11: 000000000000007f R12: ffff9a4b09465888
[ 65.681549 < 0.000002>] R13: ffff9a4b36f20010 R14: ffff9a4b36f20290 R15: ffff9a4b3a692840
[ 65.681551 < 0.000002>] FS: 0000000000000000(0000) GS:ffff9a4b3ea00000(0000) knlGS:0000000000000000
[ 65.681553 < 0.000002>] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 65.681554 < 0.000001>] CR2: 0000000000000008 CR3: 00000007c9c82000 CR4: 00000000003506e0
[ 65.681556 < 0.000002>] Call Trace:
[ 65.681561 < 0.000005>] drm_dp_mst_topology_mgr_destroy+0xc4/0xe0 [drm_kms_helper]
[ 65.681612 < 0.000051>] amdgpu_dm_connector_destroy+0x3d/0x110 [amdgpu]
[ 65.681622 < 0.000010>] drm_connector_free_work_fn+0x78/0x90 [drm]
[ 65.681624 < 0.000002>] process_one_work+0x164/0x410
[ 65.681626 < 0.000002>] worker_thread+0x4d/0x450
[ 65.681628 < 0.000002>] ? rescuer_thread+0x390/0x390
[ 65.681630 < 0.000002>] kthread+0x10a/0x140
[ 65.681632 < 0.000002>] ? kthread_unpark+0x70/0x70
[ 65.681634 < 0.000002>] ret_from_fork+0x22/0x30
This reverts commit
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.