Fix race between rmmod and cat /proc/kallsyms

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module_get_kallsym() leaks "struct module *" outside of module_mutex which is
no-no, because module can dissapear right after mutex unlock.

Copy all needed information from inside module_mutex into caller-supplied
space.

[bunk@stusta.de: is_exported() can now become static]
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

...

This commit is contained in:

Alexey Dobriyan 2007-05-08 00:28:39 -07:00 • committed by Linus Torvalds

parent ae84e32470

commit ea07890a68

3 changed files with 29 additions and 34 deletions

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30

kernel/kallsyms.c

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12

kernel/module.c

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