On Fri, Jun 07, 2013 at 05:00:33PM +0800, Li Zefan wrote: > commit 6a76f8c0ab19f215af2a3442870eeb5f0e81998d upstream. > > Currently set_ftrace_pid and set_graph_function files use seq_lseek > for their fops. However seq_open() is called only for FMODE_READ in > the fops->open() so that if an user tries to seek one of those file > when she open it for writing, it sees NULL seq_file and then panic. You lost the original authorship of this patch, which is a very bad thing to do. Ugh, time to edit emails by hand, not my favorite pasttime, someone owes me a drink... greg k-h -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html