s390/debug: Replace kmalloc() + copy_from_user() with memdup_user_nul()

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Replace kmalloc() followed by copy_from_user() with memdup_user_nul() to
improve and simplify debug_get_user_string(). Remove the manual
NUL-termination.

No functional changes intended.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

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Thorsten Blum 2025-09-04 13:40:29 +02:00 • committed by Alexander Gordeev

parent 11aa54ba4c

commit f5507aefc9

1 changed files with 3 additions and 9 deletions

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arch/s390/kernel/debug.c

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