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| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2011-07-26 16:08:41 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-10-16 14:14:54 -0700 |
| commit | 2b7eea63de50d738ae12a1bf84b76ef91c007a0e (patch) | |
| tree | ec24a34af3ec3ae142b0d2c84e22d7b264326b30 /arch/arm/mach-ux500 | |
| parent | 6770fa9b440e57ea2a7c586063c5c30da2933513 (diff) | |
| download | kernel_samsung_smdk4412-2b7eea63de50d738ae12a1bf84b76ef91c007a0e.zip kernel_samsung_smdk4412-2b7eea63de50d738ae12a1bf84b76ef91c007a0e.tar.gz kernel_samsung_smdk4412-2b7eea63de50d738ae12a1bf84b76ef91c007a0e.tar.bz2 | |
exec: do not call request_module() twice from search_binary_handler()
commit 912193521b719fbfc2f16776febf5232fe8ba261 upstream.
Currently, search_binary_handler() tries to load binary loader module
using request_module() if a loader for the requested program is not yet
loaded. But second attempt of request_module() does not affect the result
of search_binary_handler().
If request_module() triggered recursion, calling request_module() twice
causes 2 to the power of MAX_KMOD_CONCURRENT (= 50) repetitions. It is
not an infinite loop but is sufficient for users to consider as a hang up.
Therefore, this patch changes not to call request_module() twice, making 1
to the power of MAX_KMOD_CONCURRENT repetitions in case of recursion.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: Richard Weinberger <richard@nod.at>
Tested-by: Richard Weinberger <richard@nod.at>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Maxim Uvarov <muvarov@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm/mach-ux500')
0 files changed, 0 insertions, 0 deletions