kernel/linux.git/Documentation/fault-injection, branch v6.12.80

Fix typo "allocateed" to allocated

2024-08-26T21:37:25+00:00

Fix minor typo in the fault-injection documentation, where the word allocated was misspelled as "allocateed". Signed-off-by: Gianfranco Trad Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20240819110641.1931-1-gianf.trad@gmail.com

docs: fault-injection: document cache-filter feature for failslab

2024-08-07T18:53:34+00:00

The failslab fault injection mechanism has an undocumented capability that provides significant utility in testing and debugging. This feature, introduced in commit 4c13dd3b48fcb ("failslab: add ability to filter slab caches"), allows for targeted error injection into specific slab caches. However, it was inadvertently left undocumented at the time of its implementation. Add documentation for the cache-filter feature in the failslab mode description. Also, providing a practical example demonstrating how to use cache-filter to inject failures specifically when allocating socket buffers (skbs). Signed-off-by: Breno Leitao Reviewed-by: Akinobu Mita Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/20240726120930.3231333-1-leitao@debian.org

Fixed case issue with 'fault-injection' in documentation

2024-02-21T20:44:21+00:00

In the 'fault-injection' subdirectory, the first letter F is capitalized, whereas in index.rst f is lowercase, but in index.rst all other elements in the same column are capitalized. Signed-off-by: "Ran.Park" Signed-off-by: Jonathan Corbet Link: https://lore.kernel.org/r/tencent_3EA07E65C43816C2A8402DC655CF98916B06@qq.com

Documentation: Fix typos

2023-08-18T17:29:03+00:00

Fix typos in Documentation. Signed-off-by: Bjorn Helgaas Link: https://lore.kernel.org/r/20230814212822.193684-4-helgaas@kernel.org Signed-off-by: Jonathan Corbet

lkdtm: replace ll_rw_block with submit_bh

2023-05-31T19:26:57+00:00

Function ll_rw_block was removed in commit 79f597842069 ("fs/buffer: remove ll_rw_block() helper"). There is no unified function to sumbit read or write buffer in block layer for now. Consider similar sematics, we can choose submit_bh() to replace ll_rw_block() as predefined crash point. In submit_bh(), it also takes read or write flag as the first argument and invoke submit_bio() to submit I/O request to block layer. Fixes: 79f597842069 ("fs/buffer: remove ll_rw_block() helper") Signed-off-by: Yue Zhao Acked-by: Kees Cook Link: https://lore.kernel.org/r/20230503162944.3969-1-findns94@gmail.com Signed-off-by: Greg Kroah-Hartman

block: null_blk: make fault-injection dynamically configurable per device

2023-04-13T13:38:55+00:00

The null_blk driver has multiple driver-specific fault injection mechanisms. Each fault injection configuration can only be specified by a module parameter and cannot be reconfigured without reloading the driver. Also, each configuration is common to all devices and is initialized every time a new device is added. This change adds the following subdirectories for each null_blk device. /sys/kernel/config/nullb//timeout_inject /sys/kernel/config/nullb//requeue_inject /sys/kernel/config/nullb//init_hctx_fault_inject Each fault injection attribute can be dynamically set per device by a corresponding file in these directories. Signed-off-by: Akinobu Mita Link: https://lore.kernel.org/r/20230327143733.14599-3-akinobu.mita@gmail.com Signed-off-by: Jens Axboe

docs: fault-injection: add requirements of error injectable functions

2023-02-03T06:50:00+00:00

Add a section about the requirements of the error injectable functions and the type of errors. Since this section must be read before using ALLOW_ERROR_INJECTION() macro, that section is referred from the comment of the macro too. Link: https://lkml.kernel.org/r/167081321427.387937.15475445689482551048.stgit@devnote3 Link: https://lore.kernel.org/all/20221211115218.2e6e289bb85f8cf53c11aa97@kernel.org/T/#u Signed-off-by: Masami Hiramatsu (Google) Cc: Alexei Starovoitov Cc: Borislav Petkov (AMD) Cc: Chris Mason Cc: Christoph Hellwig Cc: Florent Revest Cc: Greg Kroah-Hartman Cc: Jonathan Corbet Cc: Josh Poimboeuf Cc: Kees Cook Cc: KP Singh Cc: Mark Rutland Cc: Peter Zijlstra Cc: Steven Rostedt (Google) Signed-off-by: Andrew Morton

debugfs: fix error when writing negative value to atomic_t debugfs file

2022-12-01T00:13:16+00:00

The simple attribute files do not accept a negative value since the commit 488dac0c9237 ("libfs: fix error cast of negative value in simple_attr_write()"), so we have to use a 64-bit value to write a negative value for a debugfs file created by debugfs_create_atomic_t(). This restores the previous behaviour by introducing DEFINE_DEBUGFS_ATTRIBUTE_SIGNED for a signed value. Link: https://lkml.kernel.org/r/20220919172418.45257-4-akinobu.mita@gmail.com Fixes: 488dac0c9237 ("libfs: fix error cast of negative value in simple_attr_write()") Signed-off-by: Akinobu Mita Reported-by: Zhao Gongyi Reviewed-by: David Hildenbrand Reviewed-by: Greg Kroah-Hartman Cc: Alexander Viro Cc: Jonathan Corbet Cc: Oscar Salvador Cc: Rafael J. Wysocki Cc: Shuah Khan Cc: Wei Yongjun Cc: Yicong Yang Signed-off-by: Andrew Morton

docs: notifier-error-inject: Correct test's name

2022-10-07T16:32:16+00:00

Correct test's name for mem-on-off-test.sh/cpu-on-off-test.sh. Signed-off-by: Zhao Gongyi Reviewed-by: David Hildenbrand Signed-off-by: Shuah Khan

SUNRPC: Fix server-side fault injection documentation

2022-07-30T00:08:56+00:00

Fixes: 37324e6bb120 ("SUNRPC: Cache deferral injection") Signed-off-by: Chuck Lever