lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date:	Sat, 11 Jun 2011 20:06:16 -0700
From:	"John Z. Bohach" <>
Subject: Kernel bug in root=nfsroot codepath

There is a problem with S5 and nfsroot.

The kernel will NOT enter S5 if and only if root=nfsroot.

With the same rootfs burned to disk, it works fine.  I've tracked this 
done to the


function.  The call trace is sequence is:

            ?? strange second call from unknown location to:
            then it just stops...

Machine does not hang as I can see NFS timeout messages after a few 
minutes (probably interrupt context), but no further printk's are 
manifest, and system stays in this state until physically reset and is 

This is the third time I'm posting this...any ideas?  If I simply skip 
the disable_nonboot_cpus()  call, then it powers down fine.  This only 
happens with root=nfsroot.  This happens with multiple kernels and goes 
back to at least 2.6.16 and is there even with today's latest kernel.

To try to duplicate this, boot an nfsroot-ed machine into run-level 1, 
and run 'halt -n -d -f -p'.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists