On Wed, 2011-01-26 at 14:33 +0530, Srikar Dronamraju wrote: > > > I actually dont like to release the write_lock and then reacquire it. > write_opcode, which is called thro install_uprobe, i.e to insert the > actual breakpoint instruction takes a read lock on the mmap_sem. > Hence uprobe_mmap gets called in context with write lock on mmap_sem > held, I had to release it before calling install_uprobe. Ah, right, so that's going to give you a head-ache ;-) The moment you release this mmap_sem, the map you're going to install the probe point in can go away. The only way to make this work seems to start by holding the mmap_sem for writing and make a breakpoint install function that assumes its taken and doesn't try to acquire it again. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href