For the linux1394-devel and sparclinux mailinglists to see: Since Linux 2.6.23, the firewire-ohci driver oopses on startup when it sets up its AR DMA contexts (AR = asynchronous reception). See quote from bugzilla below. The last modification that directly affected firewire-ohci's AR DMA was already before 2.6.22 (firewire: fix async reception on big endian machines). http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=history;f=drivers/firewire/fw-ohci.c Patches to fw-ohci.c in 2.6.23 which are not in 2.6.22.9: firewire: missing newline in printk firewire: fw-ohci: flush MMIO write before msleep firewire: fw-ohci: dma_free_coherent needs IRQs enabled They are all obviously unrelated to the bug. bugme-daemon@xxxxxxxxxxxxxxxxxxx wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=9160 > > Summary: kernel oops in firewire_ohci > Product: Drivers > Version: 2.5 > KernelVersion: 2.6.23.1 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: IEEE1394 > AssignedTo: drivers_ieee1394@xxxxxxxxxxxxxxxxxxxx > ReportedBy: seraph@xxxxxxxxx > > > Most recent kernel where this bug did not occur: 2.6.22.9 > Distribution: Gentoo > Hardware Environment: Sparc64 (Blade 100 UltraSPARC 2e) > Software Environment: > Problem Description: > > I found a kernel oops in /var/log/messages after booting both my Blade 100s. > The oops appears to have triggered by firewire_ohci, but I'm no kernel hacker > and could be mistaken. > > Here is the text of one of them. The one from the other machine is identical > except for the timestamps and machine name. > > Oct 13 20:26:04 succubus OOPS: Bogus kernel PC [0000000000000000] in fault handler > Oct 13 20:26:04 succubus OOPS: RPC [0000000010068cd0] > Oct 13 20:26:04 succubus RPC: <ar_context_add_page+0xd8/0x160 [firewire_ohci]> > Oct 13 20:26:04 succubus OOPS: Fault was to vaddr[1004e000] > Oct 13 20:26:04 succubus Call Trace: > Oct 13 20:26:04 succubus [00000000004076f4] sparc64_realfault_common+0x18/0x20 > Oct 13 20:26:04 succubus [0000000010068cd0] ar_context_add_page+0xd8/0x160 [firewire_ohci] > Oct 13 20:26:04 succubus [0000000010068d90] ar_context_init+0x38/0x60 [firewire_ohci] > Oct 13 20:26:04 succubus [000000001006ac50] pci_probe+0xf8/0x340 [firewire_ohci] > Oct 13 20:26:04 succubus [00000000005299bc] pci_device_probe+0x64/0xa0 > Oct 13 20:26:04 succubus [0000000000550a28] driver_probe_device+0x90/0x1c0 > Oct 13 20:26:04 succubus [0000000000550bc0] __driver_attach+0x68/0x80 > Oct 13 20:26:04 succubus [000000000054fe5c] bus_for_each_dev+0x44/0x80 > Oct 13 20:26:04 succubus [0000000000550218] bus_add_driver+0x80/0x1c0 > Oct 13 20:26:04 succubus [0000000000529b7c] __pci_register_driver+0x44/0xa0 > Oct 13 20:26:04 succubus [000000000047d5cc] sys_init_module+0x134/0x1400 > Oct 13 20:26:04 succubus [0000000000406094] linux_sparc_syscall32+0x3c/0x40 > Oct 13 20:26:04 succubus [00000000000133d8] 0x133e0 > Oct 13 20:26:04 succubus Unable to handle kernel NULL pointer dereference > Oct 13 20:26:04 succubus tsk->{mm,active_mm}->context = 00000000000001f9 > Oct 13 20:26:04 succubus tsk->{mm,active_mm}->pgd = fffff8004f9f8000 > Oct 13 20:26:04 succubus \|/ ____ \|/ > Oct 13 20:26:04 succubus "@'/ .. \`@" > Oct 13 20:26:04 succubus /_| \__/ |_\ > Oct 13 20:26:04 succubus \__U_/ > Oct 13 20:26:04 succubus modprobe(648): Oops [#1] > Oct 13 20:26:04 succubus TSTATE: 0000001911009601 TPC: 0000000000000000 TNPC: 0000000000000004 Y: 00000000 Not tainted > Oct 13 20:26:04 succubus TPC: <0x8> > Oct 13 20:26:04 succubus g0: 0000000000470a40 g1: 00000000005d2b28 g2: 0000000000000000 g3: 0000000000000000 > Oct 13 20:26:04 succubus g4: fffff8004f393480 g5: 0000000000000098 g6: fffff8004fa74000 g7: 00c06500180065c0 > Oct 13 20:26:04 succubus o0: fffff8004effb870 o1: 00000000c0650000 o2: 0000000000002000 o3: 0000000000000000 > Oct 13 20:26:04 succubus o4: 0000000000000004 o5: 000001ff00420000 sp: fffff8004fa76e71 ret_pc: 0000000010068cd0 > Oct 13 20:26:04 succubus RPC: <ar_context_add_page+0xd8/0x160 [firewire_ohci]> > Oct 13 20:26:04 succubus l0: fffff8004fba4000 l1: 00000000c0650000 l2: fffff8004effb870 l3: fffff8004f608d90 > Oct 13 20:26:04 succubus l4: 000000000063cc00 l5: 0000000000ff0000 l6: fffff8004fa776e0 l7: fffffffffffffff0 > Oct 13 20:26:04 succubus i0: 000000000000ff00 i1: 0000000010069cc0 i2: fffff8004f608d90 i3: 0000000000000000 > Oct 13 20:26:04 succubus i4: 0000000000000040 i5: 0000000000000000 i6: fffff8004fa76f31 i7: 0000000010068d90 > Oct 13 20:26:04 succubus I7: <ar_context_init+0x38/0x60 [firewire_ohci]> > Oct 13 20:26:04 succubus Caller[0000000010068d90]: ar_context_init+0x38/0x60 [firewire_ohci] > Oct 13 20:26:04 succubus Caller[000000001006ac50]: pci_probe+0xf8/0x340 [firewire_ohci] > Oct 13 20:26:04 succubus Caller[00000000005299bc]: pci_device_probe+0x64/0xa0 > Oct 13 20:26:04 succubus Caller[0000000000550a28]: driver_probe_device+0x90/0x1c0 > Oct 13 20:26:04 succubus Caller[0000000000550bc0]: __driver_attach+0x68/0x80 > Oct 13 20:26:04 succubus Caller[000000000054fe5c]: bus_for_each_dev+0x44/0x80 > Oct 13 20:26:04 succubus Caller[0000000000550218]: bus_add_driver+0x80/0x1c0 > Oct 13 20:26:04 succubus Caller[0000000000529b7c]: __pci_register_driver+0x44/0xa0 > Oct 13 20:26:04 succubus Caller[000000000047d5cc]: sys_init_module+0x134/0x1400 > Oct 13 20:26:04 succubus Caller[0000000000406094]: linux_sparc_syscall32+0x3c/0x40 > Oct 13 20:26:04 succubus Caller[00000000000133d8]: 0x133e0 > Oct 13 20:26:04 succubus Instruction DUMP: 01000000 01000000 01000000 > <1>Unable to handle kernel NULL pointer dereference > Oct 13 20:26:04 succubus tsk->{mm,active_mm}->context = 00000000000001f9 > Oct 13 20:26:04 succubus tsk->{mm,active_mm}->pgd = fffff8004f9f8000 > Oct 13 20:26:04 succubus \|/ ____ \|/ > Oct 13 20:26:04 succubus "@'/ .. \`@" > Oct 13 20:26:04 succubus /_| \__/ |_\ > Oct 13 20:26:04 succubus \__U_/ > Oct 13 20:26:04 succubus modprobe(648): Oops [#2] > Oct 13 20:26:04 succubus TSTATE: 0000004480009605 TPC: 0000000000428a5c TNPC: 0000000000428a60 Y: 00000000 Tainted: G D > Oct 13 20:26:04 succubus TPC: <instruction_dump+0x44/0xa0> > Oct 13 20:26:04 succubus g0: 78745f6164645f70 g1: 000000000063def0 g2: 0000000000000000 g3: 000000000063dc00 > Oct 13 20:26:04 succubus g4: fffff8004f393480 g5: 0000000000000098 g6: fffff8004fa74000 g7: 000000000063def0 > Oct 13 20:26:04 succubus o0: 00000000006050d0 o1: 000000000000003c o2: 0000000001000000 o3: 000000000000003e > Oct 13 20:26:04 succubus o4: 0000000010068d90 o5: 000000000068d168 sp: fffff8004fa76aa1 ret_pc: 0000000000428a80 > Oct 13 20:26:04 succubus RPC: <instruction_dump+0x68/0xa0> > Oct 13 20:26:04 succubus l0: 0000000000000000 l1: 0000000000605000 l2: 0000000000000000 l3: 0000001911009601 > Oct 13 20:26:04 succubus l4: 0000000000000000 l5: 000000000063dc00 l6: 000000000063dc00 l7: 0000000000000000 > Oct 13 20:26:04 succubus i0: 0000000000000000 i1: 00000000000133e0 i2: fffff8004fa775d0 i3: 0000000000000000 > Oct 13 20:26:04 succubus i4: 00000000000000ff i5: 000000000000000b i6: fffff8004fa76b61 i7: 00000000004294b8 > Oct 13 20:26:04 succubus I7: <die_if_kernel+0x160/0x2c0> > Oct 13 20:26:04 succubus Caller[00000000004294b8]: die_if_kernel+0x160/0x2c0 > Oct 13 20:26:04 succubus Caller[000000000044d130]: unhandled_fault+0x78/0xe0 > Oct 13 20:26:04 succubus Caller[00000000004076f4]: sparc64_realfault_common+0x18/0x20 > Oct 13 20:26:04 succubus Caller[0000000010068cd0]: ar_context_add_page+0xd8/0x160 [firewire_ohci] > Oct 13 20:26:04 succubus Caller[0000000010068d90]: ar_context_init+0x38/0x60 [firewire_ohci] > Oct 13 20:26:04 succubus Caller[000000001006ac50]: pci_probe+0xf8/0x340 [firewire_ohci] > Oct 13 20:26:04 succubus Caller[00000000005299bc]: pci_device_probe+0x64/0xa0 > Oct 13 20:26:04 succubus Caller[0000000000550a28]: driver_probe_device+0x90/0x1c0 > Oct 13 20:26:04 succubus Caller[0000000000550bc0]: __driver_attach+0x68/0x80 > Oct 13 20:26:04 succubus Caller[000000000054fe5c]: bus_for_each_dev+0x44/0x80 > Oct 13 20:26:04 succubus Caller[0000000000550218]: bus_add_driver+0x80/0x1c0 > Oct 13 20:26:04 succubus Caller[0000000000529b7c]: __pci_register_driver+0x44/0xa0 > Oct 13 20:26:04 succubus Caller[000000000047d5cc]: sys_init_module+0x134/0x1400 > Oct 13 20:26:04 succubus Caller[0000000000406094]: linux_sparc_syscall32+0x3c/0x40 > Oct 13 20:26:04 succubus Caller[00000000000133d8]: 0x133e0 > Oct 13 20:26:04 succubus Instruction DUMP: 80a42000 12480005 9610203e <d4060000> 4000cf10 a0102001 833c2000 901460d0 83287002 > > -- Stefan Richter -=====-=-=== =-=- -==-= http://arcgraph.de/sr/ - To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
