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Petr Pavlu 6dd90afb39 module: Prevent silent truncation of module name in delete_module(2)

[ Upstream commit a6323bd4e611567913e23df5b58f2d4e4da06789 ]

Passing a module name longer than MODULE_NAME_LEN to the delete_module
syscall results in its silent truncation. This really isn't much of
a problem in practice, but it could theoretically lead to the removal of an
incorrect module. It is more sensible to return ENAMETOOLONG or ENOENT in
such a case.

Update the syscall to return ENOENT, as documented in the delete_module(2)
man page to mean "No module by that name exists." This is appropriate
because a module with a name longer than MODULE_NAME_LEN cannot be loaded
in the first place.

Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
Reviewed-by: Daniel Gomez <da.gomez@samsung.com>
Link: https://lore.kernel.org/r/20250630143535.267745-2-petr.pavlu@suse.com
Signed-off-by: Daniel Gomez <da.gomez@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-08-28 16:28:28 +02:00

debug_kmemleak.c

…

decompress.c

module/decompress: use kvmalloc() consistently

2023-11-20 11:59:37 +01:00

dups.c

module: include internal.h in module/dups.c

2023-05-02 20:33:36 -07:00

internal.h

kbuild: generate KSYMTAB entries by modpost

2023-06-22 21:17:10 +09:00