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b1c332c9e8
Fix an hang on a pipe when run_helper() fails when called by change_tramp() (i.e. when calling uml_net) - reproduced the bug and verified this fixes it. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>