uprobes: Change valid_vma() to demand VM_MAYEXEC rather than VM_EXEC

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uprobe_register() or uprobe_mmap() requires VM_READ | VM_EXEC, this
is not right. An apllication can do mprotect(PROT_EXEC) later and
execute this code.

Change valid_vma(is_register => true) to check VM_MAYEXEC instead.
No need to check VM_MAYREAD, it is always set.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>

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This commit is contained in:

Oleg Nesterov 2012-09-16 19:07:41 +02:00

parent 75ed82ea53

commit 78a320542e

1 changed files with 2 additions and 2 deletions

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kernel/events/uprobes.c

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