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0a562db7c4
[ Upstream commit 61fb2482216679b9e1e797440c148bb143a5040a ] When tcmu queues a new command - no matter whether in command ring or in qfull_queue - a cmd_id from IDR udev->commands is assigned to the command. If userspace sends a wrong command completion containing the cmd_id of a command on the qfull_queue, tcmu_handle_completions() finds the command in the IDR and calls tcmu_handle_completion() for it. This might do some nasty things because commands in qfull_queue do not have a valid dbi list. To fix this bug, we no longer add queued commands to the idr. Instead the cmd_id is assign when a command is written to the command ring. Due to this change I had to adapt the source code at several places where up to now an idr_for_each had been done. [mkp: fix checkpatch warnings] Link: https://lore.kernel.org/r/20200518164833.12775-1-bstroesser@ts.fujitsu.com Acked-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Bodo Stroesser <bstroesser@ts.fujitsu.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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| 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.