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binfmt_misc: fix false -ENOEXEC when coupled with other binary handlers
In case the binfmt_misc binary handler is registered *before* the e.g. script one (when for example being compiled as a module) the following situation may occur: 1. user launches a script, whose interpreter is a misc binary; 2. the load_misc_binary sets the misc_bang and returns -ENOEVEC, since the binary is a script; 3. the load_script_binary loads one and calls for search_binary_hander to run the interpreter; 4. the load_misc_binary is called again, but refuses to load the binary due to misc_bang bit set. The fix is to move the misc_bang setting lower - prior to the actual call to the search_binary_handler. Caused by the commit 3a2e7f4 (binfmt_misc.c: avoid potential kernel stack overflow) Signed-off-by: Pavel Emelyanov <[email protected]> Reported-by: Kirill A. Shutemov <[email protected]> Tested-by: Kirill A. Shutemov <[email protected]> Cc: <[email protected]> [2.6.26.x] Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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