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| Filename | Latest commit message | Latest commit date |
|---|---|---|
7fc65d4c2b
tty_unregister_driver may be called more than 1 time in some
hotplug cases,it will cause the kernel oops. This patch checked
dbc_tty_driver to make sure it is unregistered only 1 time.
[ 175.741404] BUG: unable to handle kernel NULL pointer dereference at 0000000000000034
[ 175.742309] IP: tty_unregister_driver+0x9/0x70
[ 175.743148] PGD 0 P4D 0
[ 175.743981] Oops: 0000 [#1] SMP PTI
[ 175.753904] RIP: 0010:tty_unregister_driver+0x9/0x70
[ 175.754817] RSP: 0018:ffffa8ff831d3bb0 EFLAGS: 00010246
[ 175.755753] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 175.756685] RDX: ffff92089c616000 RSI: ffffe64fe1b26080 RDI: 0000000000000000
[ 175.757608] RBP: ffff92086c988230 R08: 000000006c982701 R09: 00000001801e0016
[ 175.758533] R10: ffffa8ff831d3b48 R11: ffff92086c982100 R12: ffff92086c98827c
[ 175.759462] R13: ffff92086c988398 R14: 0000000000000060 R15: ffff92089c5e9b40
[ 175.760401] FS: 0000000000000000(0000) GS:ffff9208a0100000(0000) knlGS:0000000000000000
[ 175.761334] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 175.762270] CR2: 0000000000000034 CR3: 000000011800a003 CR4: 00000000003606e0
[ 175.763225] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 175.764164] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 175.765091] Call Trace:
[ 175.766014] xhci_dbc_tty_unregister_driver+0x11/0x30
[ 175.766960] xhci_dbc_exit+0x2a/0x40
[ 175.767889] xhci_stop+0x57/0x1c0
[ 175.768824] usb_remove_hcd+0x100/0x250
[ 175.769708] usb_hcd_pci_remove+0x68/0x130
[ 175.770574] pci_device_remove+0x3b/0xc0
[ 175.771435] device_release_driver_internal+0x157/0x230
[ 175.772343] pci_stop_bus_device+0x74/0xa0
[ 175.773205] pci_stop_bus_device+0x2b/0xa0
[ 175.774061] pci_stop_bus_device+0x2b/0xa0
[ 175.774907] pci_stop_bus_device+0x2b/0xa0
[ 175.775741] pci_stop_bus_device+0x2b/0xa0
[ 175.776618] pci_stop_bus_device+0x2b/0xa0
[ 175.777452] pci_stop_bus_device+0x2b/0xa0
[ 175.778273] pci_stop_bus_device+0x2b/0xa0
[ 175.779092] pci_stop_bus_device+0x2b/0xa0
[ 175.779908] pci_stop_bus_device+0x2b/0xa0
[ 175.780750] pci_stop_bus_device+0x2b/0xa0
[ 175.781543] pci_stop_and_remove_bus_device+0xe/0x20
[ 175.782338] pciehp_unconfigure_device+0xb8/0x160
[ 175.783128] pciehp_disable_slot+0x4f/0xd0
[ 175.783920] pciehp_power_thread+0x82/0xa0
[ 175.784766] process_one_work+0x147/0x3c0
[ 175.785564] worker_thread+0x4a/0x440
[ 175.786376] kthread+0xf8/0x130
[ 175.787174] ? rescuer_thread+0x360/0x360
[ 175.787964] ? kthread_associate_blkcg+0x90/0x90
[ 175.788798] ret_from_fork+0x35/0x40
Cc: <stable@vger.kernel.org> # 4.16
Fixes:
|
||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| 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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.