19269741c3
[ Upstream commit 2b78832f50c4d711e161b166d7d8790968051546 ]
When removing the irdma driver or unplugging its aux device, the ccq
queue is released before destorying the cqp_cmpl_wq queue.
But in the window, there may still be completion events for wqes. That
will cause a UAF in irdma_sc_ccq_get_cqe_info().
[34693.333191] BUG: KASAN: use-after-free in irdma_sc_ccq_get_cqe_info+0x82f/0x8c0 [irdma]
[34693.333194] Read of size 8 at addr ffff889097f80818 by task kworker/u67:1/26327
[34693.333194]
[34693.333199] CPU: 9 PID: 26327 Comm: kworker/u67:1 Kdump: loaded Tainted: G O --------- -t - 4.18.0 #1
[34693.333200] Hardware name: SANGFOR Inspur/NULL, BIOS 4.1.13 08/01/2016
[34693.333211] Workqueue: cqp_cmpl_wq cqp_compl_worker [irdma]
[34693.333213] Call Trace:
[34693.333220] dump_stack+0x71/0xab
[34693.333226] print_address_description+0x6b/0x290
[34693.333238] ? irdma_sc_ccq_get_cqe_info+0x82f/0x8c0 [irdma]
[34693.333240] kasan_report+0x14a/0x2b0
[34693.333251] irdma_sc_ccq_get_cqe_info+0x82f/0x8c0 [irdma]
[34693.333264] ? irdma_free_cqp_request+0x151/0x1e0 [irdma]
[34693.333274] irdma_cqp_ce_handler+0x1fb/0x3b0 [irdma]
[34693.333285] ? irdma_ctrl_init_hw+0x2c20/0x2c20 [irdma]
[34693.333290] ? __schedule+0x836/0x1570
[34693.333293] ? strscpy+0x83/0x180
[34693.333296] process_one_work+0x56a/0x11f0
[34693.333298] worker_thread+0x8f/0xf40
[34693.333301] ? __kthread_parkme+0x78/0xf0
[34693.333303] ? rescuer_thread+0xc50/0xc50
[34693.333305] kthread+0x2a0/0x390
[34693.333308] ? kthread_destroy_worker+0x90/0x90
[34693.333310] ret_from_fork+0x1f/0x40
Fixes:
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|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.