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Filename Latest commit message Latest commit date
Akinobu Mita 5c27b46c20 debugfs: fix error when writing negative value to atomic_t debugfs file 
[ Upstream commit d472cf797c4e268613dbce5ec9b95d0bcae19ecb ]

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/[email protected]
Fixes: 488dac0c9237 ("libfs: fix error cast of negative value in simple_attr_write()")
Signed-off-by: Akinobu Mita <[email protected]>
Reported-by: Zhao Gongyi <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Oscar Salvador <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: Wei Yongjun <[email protected]>
Cc: Yicong Yang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
2023-01-18 11:40:56 +01:00
..
fault-injection.rst debugfs: fix error when writing negative value to atomic_t debugfs file 2023-01-18 11:40:56 +01:00
index.rst docs: add some directories to the main documentation index 2019-07-15 11:03:03 -03:00
notifier-error-inject.rst
nvme-fault-injection.rst
provoke-crashes.rst