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The "leak" pointer, in the sample of shadow variable API, is allocated
as sizeof(int). Let's help developers and static analyzers with
understanding the code by using the appropriate pointer type.
Reported-by: Dan Carpenter <[email protected]>
Signed-off-by: Petr Mladek <[email protected]>
Reviewed-by: Joe Lawrence <[email protected]>
Acked-by: Miroslav Benes <[email protected]>
Reviewed-by: Kamalesh Babulal <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details you
should have received a copy of the gnu general public license along
with this program if not see http www gnu org licenses
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details [based]
[from] [clk] [highbank] [c] you should have received a copy of the
gnu general public license along with this program if not see http
www gnu org licenses
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 355 file(s).
Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Reviewed-by: Jilayne Lovejoy <[email protected]>
Reviewed-by: Steve Winslow <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Sparse reported warnings about non-static symbols. For the variables
a simple static attribute is fine - for the functions referenced by
livepatch via klp_func the symbol-names must be unmodified in the
symbol table and the patchable code has to be emitted. The resolution
is to attach __used attribute to the shared statically declared functions.
Link: https://lore.kernel.org/lkml/[email protected]/
Suggested-by: Joe Lawrence <[email protected]>
Signed-off-by: Nicholas Mc Guire <[email protected]>
Acked-by: Miroslav Benes <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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kzalloc() return should always be checked - notably in example code
where this may be seen as reference. On failure of allocation in
livepatch_fix1_dummy_alloc() respectively dummy_alloc() previous
allocation is freed (thanks to Petr Mladek <[email protected]> for
catching this) and NULL returned.
Signed-off-by: Nicholas Mc Guire <[email protected]>
Fixes: 439e7271dc2b ("livepatch: introduce shadow variable API")
Acked-by: Joe Lawrence <[email protected]>
Reviewed-by: Petr Mladek <[email protected]>
Acked-by: Miroslav Benes <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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Add exported API for livepatch modules:
klp_shadow_get()
klp_shadow_alloc()
klp_shadow_get_or_alloc()
klp_shadow_free()
klp_shadow_free_all()
that implement "shadow" variables, which allow callers to associate new
shadow fields to existing data structures. This is intended to be used
by livepatch modules seeking to emulate additions to data structure
definitions.
See Documentation/livepatch/shadow-vars.txt for a summary of the new
shadow variable API, including a few common use cases.
See samples/livepatch/livepatch-shadow-* for example modules that
demonstrate shadow variables.
[[email protected]: fix __klp_shadow_get_or_alloc() comment as spotted by
Josh]
Signed-off-by: Joe Lawrence <[email protected]>
Acked-by: Josh Poimboeuf <[email protected]>
Acked-by: Miroslav Benes <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
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