> Sure. In addition to what you did above, please do > > mount -t debugfs none /sys/kernel/debug > > and then cat the contents of the pseudofile at > > /sys/kernel/debug/tracing/stack_trace > > Please do this more or less immediately after you've finished mounting > the NFSv4 client. > I've uploaded the stack trace. It was generated directly after mounting. Here are the stacks: After mounting: https://bugzilla.kernel.org/attachment.cgi?id=26153 After the soft lockup: https://bugzilla.kernel.org/attachment.cgi?id=26154 The dmesg output of the soft lockup: https://bugzilla.kernel.org/attachment.cgi?id=26155 > Does your server have the 'crossmnt' or 'nohide' flags set, or does it > use the 'refer' export option anywhere? If so, then we might have to > test further, since those may trigger the NFSv4 submount feature. > The server has the following settings: rw,nohide,insecure,async,no_subtree_check,no_root_squash Thanks! Robert -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>