Hommel, Thomas (GE Indust, GE Fanuc) wrote: > Here's a record of driver initialization with debugging enabled. I can't > figure out what goes wrong, but maybe sombody else can... > > Any help is appreciated [...] > mptbase: ioc0: WARNING - mpt_timer_expired complete! > Unable to handle kernel paging request for data at address 0x00000542 > Faulting instruction address: 0xa01d93b8 > Oops: Kernel access of bad area, sig: 11 [#1] > SBS CM6 > NIP: a01d93b8 LR: a01d93b8 CTR: a000c2ac > REGS: bffcbea0 TRAP: 0300 Not tainted (2.6.22.1) > MSR: 00009032 <EE,ME,IR,DR> CR: 82004028 XER: 00000000 > DAR: 00000542, DSISR: 40000000 > TASK = bffc0030[5] 'events/0' THREAD: bffca000 > GPR00: a01d93b8 bffcbf50 bffc0030 bfffd0c0 bfff7800 00000001 004971e0 > 00000000 > GPR08: 0001c7d0 00000010 a039c000 bfff783c 00000000 ff9f6b57 0fffbd00 > ffffffff > GPR16: 00000001 00000000 007fff00 00000000 00000000 007ffeb0 00000000 > a034dd74 > GPR24: a0350000 a034dd74 a0030000 a034dd74 a02e0000 bffca000 a01d93a0 > 000002c4 > NIP [a01d93b8] mptspi_dv_renegotiate_work+0x18/0x120 > LR [a01d93b8] mptspi_dv_renegotiate_work+0x18/0x120 > Call Trace: > [bffcbf50] [a01d93b8] mptspi_dv_renegotiate_work+0x18/0x120 (unreliable) > [bffcbf80] [a002d33c] run_workqueue+0xac/0x158 > [bffcbfa0] [a002d7a8] worker_thread+0x6c/0xd0 > [bffcbfd0] [a0030e74] kthread+0x84/0x8c > [bffcbff0] [a00115c4] kernel_thread+0x44/0x60 > Instruction dump: > 4bffd6d1 80010024 83e1001c 38210020 7c0803a6 4e800020 7c0802a6 9421ffd0 > bf810020 90010034 83e30010 4be83521 <a01f027e> 2f800000 419e009c > 813f0000 > mptbase: ioc0: Sending Config request type 4, page 1 and action 0 > mptbase: ioc0: mf_dma_addr=1fe82922 req_idx=3 RequestNB=2 > mptbase: ioc0: WARNING - mpt_timer_expired! > mptbase: IOC setup_reset routed to MPT base driver! > mptbase: Initiating ioc0 recovery > mptbase::MakeIocReady, ioc0 [raw] state=24000000 > mptbase: ioc0: IOC operational unexpected > mptbase: whoinit 0x4 statefault 0 force 1 Looks like a NULL deref. Find your mptspi.o, fusion.o or fusion.ko (all of them should work), and do gdb fusion.o l *mptspi_dv_renegotiate_work+0x18 That should give you the faulting line. Eike
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