write_opcode()->__replace_page() installs the new anonymous page, this new_page is PageSwapBacked() and it can be swapped out. However it forgets to do SetPageUptodate(), fix write_opcode(). For example, this is needed if do_swap_page() finds that orginial page in the the swap cache (and doesn't try to read it back), in this case it returns VM_FAULT_SIGBUS. --- kernel/uprobes.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/kernel/uprobes.c b/kernel/uprobes.c index 3928bcc..52b20c8 100644 --- a/kernel/uprobes.c +++ b/kernel/uprobes.c @@ -200,6 +200,8 @@ static int write_opcode(struct task_struct *tsk, struct uprobe * uprobe, goto put_out; } + __SetPageUptodate(new_page); + /* * lock page will serialize against do_wp_page()'s * PageAnon() handling -- 1.5.5.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>