Re: 2.6.12-rc4-mm1

["Richard Purdie" <rpurdie@rpsys.net>]

2.6.12-rc4-mm1 on a Sharp Zaurus (arm pxa255) results in:

VFS: Mounted root (jffs2 filesystem) readonly.
Freeing init memory: 76K
Kernel panic - not syncing: Attempted to kill init!
 <3>BUG: soft lockup detected on CPU#0!

Pid: 1, comm:                 init
CPU: 0
PC is at __delay+0x0/0xc
LR is at panic+0x108/0x130
pc : [<c00f71ac>]    lr : [<c0037140>]    Not tainted
sp : c0301f4c  ip : c0301f4c  fp : c0301f58
r10: 4001d000  r9 : c0300000  r8 : 00007f00
r7 : c0300000  r6 : c027a3e8  r5 : c027a3e4  r4 : 0000240b
r3 : 60000013  r2 : 000003ca  r1 : 00000000  r0 : 00017133
Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  Segment user
Control: 397F  Table: A1CB0000  DAC: 00000015
[<c0059c90>] (softlockup_tick+0x0/0xa0) from [<c0021020>] 
(timer_tick+0xb4/0xf8)
 r5 = C0300000  r4 = C0301F04
[<c0020f6c>] (timer_tick+0x0/0xf8) from [<c00277e0>] 
(pxa_timer_interrupt+0x48/0xa8)
 r6 = C0301F04  r5 = C0300000  r4 = F2A00000
[<c0027798>] (pxa_timer_interrupt+0x0/0xa8) from [<c001cbc4>] 
(__do_irq+0x6c/0xc4)
 r8 = C0301F04  r7 = 00000000  r6 = 00000000  r5 = C0300000
 r4 = C0230374
[<c001cb58>] (__do_irq+0x0/0xc4) from [<c001ce48>] (do_level_IRQ+0x68/0xb8)
[<c001cde0>] (do_level_IRQ+0x0/0xb8) from [<c001ceec>] 
(asm_do_IRQ+0x54/0x160)
 r6 = 04000000  r5 = F2D00000  r4 = FFFFFFFF
[<c001ce98>] (asm_do_IRQ+0x0/0x160) from [<c001ba14>] (__irq_svc+0x34/0x74)
[<c0037038>] (panic+0x0/0x130) from [<c003a22c>] (do_exit+0x7c8/0xda4)
 r3 = 00000001  r2 = C02E8E40  r1 = C02E8D60  r0 = C02004C0
[<c0039a64>] (do_exit+0x0/0xda4) from [<c003a900>] 
(do_group_exit+0xc0/0x104)
[<c003a840>] (do_group_exit+0x0/0x104) from [<c001be20>] 
(ret_fast_syscall+0x0/0x2c)
 r5 = 00000000  r4 = 0000002F

There was an extremely long pause after it printed "Kernel panic ..." before 
it printed the traceback.

2.6.12-rc4 doesn't do this, neither does 2.6.12-rc3-mm2.

Any ideas where the problem is before I start looking?

Regards,

Richard