s390/ftrace: Use get/copy_from_kernel_nofault consistently

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Use get/copy_from_kernel_nofault to access the kernel text consistently.
Replace memcmp() in ftrace_init_nop() to ensure that in case of
inconsistencies in the 'mcount' table, the kernel reports a failure
instead of potentially crashing.

Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

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Vasily Gorbik 2024-08-28 19:06:58 +02:00

parent efd9cd019e

commit 5200614080

1 changed files with 5 additions and 2 deletions

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arch/s390/kernel/ftrace.c

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