On Fri, Mar 06, 2009 at 05:33:57PM -0500, Cliff Brake wrote: > Hello, > > I'm using running code from the following source: > > git://git.pengutronix.de/git/ukl/linux-2.6.git rt-master > > and getting the below trace on a PXA270. > > Is 2.6.29-rc6-rt3 stable on ARM? Should this work? Any suggestions > for debugging? Up to now it only compiles. > > It seems this fault occurred while udevd was loading, so it might be a > driver issue. > > Thanks, > Cliff > > -- > ======================= > Cliff Brake > http://bec-systems.com > > INIT: version 2.86 booting > Starting udevudevd[514]: lookup_group: specified group 'scanner' unknown > > udevd[514]: lookup_group: specified group 'scanner' unknown > > udevd[514]: lookup_group: specified group 'scanner' unknown > > udevd[514]: lookup_group: specified group 'scanner' unknown > > udevd[514]: lookup_group: specified group 'nvram' unknown > > udevd[514]: lookup_user: specudevd version 124 started > ified user 'tss' unknown > > udevd[514]: lookup_group: specified group 'tss' unknown > > udevd[514]: lookup_group: specified group 'fuse' unknown > > udevd[514]: lookup_group: specified group 'kvm' unknown > > udevd[514]: lookup_group: specified group 'rdma' unknown > > udevd[514]: lookup_group: specified group 'rdma' unknown > > udevd[514]: lookup_group: specified group 'rdma' unknown This is not the kernel's fault. I assume you know how to fix it :-) > Unable to handle kernel NULL pointer dereference at virtual address 00000000 This is triggered by BUG(). > pgd = c0004000 > [00000000] *pgd=00000000 > Internal error: Oops: 817 [#1] PREEMPT > Modules linked in: > CPU: 0 Not tainted (2.6.29-rc6-rt3 #185) > PC is at exit_mmap+0x1a4/0x1bc > LR is at rt_spin_lock_slowunlock+0x50/0xa8 > pc : [<c0084650>] lr : [<c0242090>] psr: 20000013 > sp : c3943ee8 ip : c3943e78 fp : c3943f14 > r10: 0001c168 r9 : 00000001 r8 : c0027024 > r7 : c2ec6200 r6 : 00000000 r5 : 00000000 r4 : c2ec6040 > BUG: scheduling while atomic: mount.sh/0x00000001/553, CPU#0 If I read it correctly it's just a sleeping lock taken after a rt_spinlock. That is the type of some locks needs fixing. Best regards, Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
