Subject: Re: linux-next: Tree for Jan 20 -- Kernel panic - Unable to mount root fs

From: Al Viro <[email-masked]>
Date: Tue, 20 Jan 2015 21:58:31 +0000

On Tue, Jan 20, 2015 at 10:38:58PM +0100, Sabrina Dubroca wrote:

> [    1.538646] fn_lookup bsg/0:0:0:0 -2, ffff88001f718000 bsg/0:0:0:0
> [    1.539704] fn_lookup bsg 0, ffff88001f718000 bsg
> [    1.540559] fn_lookup bsg/0:0:0:0 -2, ffff88001f718000 bsg/0:0:0:0
> [    1.552611] fn_lookup bsg/1:0:0:0 -2, ffff88001f718000 bsg/1:0:0:0
> [    1.553689] fn_lookup bsg 0, ffff88001f718000 bsg
> [    1.554505] fn_lookup bsg/1:0:0:0 -2, ffff88001f718000 bsg/1:0:0:0
> [    1.557554] fn_lookup sda 0, ffff88001f718000 sda
> [    1.558368] fn_lookup sda 0, ffff88001f718000 sda
> [    1.564190] fn_lookup sda1 0, ffff88001f718000 sda1
> [    1.565008] fn_lookup sda1 0, ffff88001f718000 sda1
> [    1.570751] fn_lookup /dev/ram -2, ffff88001f71a300 /dev/ram
> [    1.571786] fn_lookup /dev/root -2, ffff88001f71b480 /dev/root

Nuts...  Is reverting just this (do_path_lookup()) part of commit sufficient
to recover the normal behaviour?