| Subject | Re: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U8 | From | Daniel Walker <> | Date | 20 Oct 2004 15:35:53 -0700 |
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On Wed, 2004-10-20 at 10:49, Alexander Batyrshin wrote: > Ingo Molnar wrote: > > i have released the -U8 Real-Time Preemption patch: > > > > http://redhat.com/~mingo/realtime-preempt/realtime-preempt-2.6.9-rc4-mm1-U8 > > > > used i386/defconfig > > 1. at boot > [...skip...] > hda: 78242976 sectors (40060 MB) w/2048KiB Cache, CHS=16383/255/63, > UDMA(100) > hda: hda1 hda2 hda3 hda4 < hda5 > > BUG: semaphore recursion deadlock detected! > .. current task khpsbpkt/723 is already holding c04610c0. > 00001f23 00001f2f c04e8de9 00000086 00000009 00000000 c011b552 00000020 > 00000400 c03b3efa dfdc9f70 dfdc9f50 0000000c dfdc78f0 c011b430 > c03b3efa > dfdc9f70 c01052a5 c03b3efa c03b3efa 00000000 dfdc78f0 dfdc78f0 > c01fd364 > Call Trace: > [<c012caa4>] __kernel_text_address+0x2e/0x37 (24) > [<c01051c9>] show_trace+0x4e/0xcc (12) > [<c01052c9>] show_stack+0x82/0x97 (36) > [<c01fd364>] __rwsem_deadlock+0xd9/0x135 (24) > [<c039e2a0>] down_write_interruptible+0xe6/0x202 (48) > [<c029dd80>] hpsbpkt_thread+0x2b/0x86 (48) > [<c029dd55>] hpsbpkt_thread+0x0/0x86 (12) > [<c01024d1>] kernel_thread_helper+0x5/0xb (4) > preempt count: 00000003 > . 3-level deep critical section nesting: > .. entry 1: _spin_lock_irqsave+0x19/0x74 / (0x0) > .. entry 2: _spin_lock+0x19/0x6d / (0x0) > .. entry 3: print_traces+0x17/0x50 / (0x0) > [...skip...]
This looks related to IEEE1394 . It has a deadlock in it. Try turning it off..
Daniel
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