Hi all, with today's mainline plus Russell's v6k patchset, I can't get pandaboard to boot with omap2plus_defconfig. The problem is that noone seems to be setting sched_clock_update_fn(), so we we call sched_clock_poll() we have a NULL pointer deref. I have 32k counter enabled but after adding a printk() to omap_init_clocksource_32k() I don't see that getting called at all :-( Am I missing any patch on top of Linus' tree ? Below is boot log. [ 0.000000] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 0.000000] pgd = c0004000 [ 0.000000] [00000000] *pgd=00000000 [ 0.000000] Internal error: Oops: 80000005 [#1] SMP [ 0.000000] last sysfs file: [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 Tainted: G W (2.6.37-08042-g51de493-dirty #10) [ 0.000000] PC is at 0x0 [ 0.000000] LR is at sched_clock_poll+0x3c/0x64 [ 0.000000] pc : [<00000000>] lr : [<c005f360>] psr: 600001d3 [ 0.000000] sp : c05abfd0 ip : 00000000 fp : 00000000 [ 0.000000] r10: 00000000 r9 : 411fc092 r8 : 80032754 [ 0.000000] r7 : c05c0900 r6 : c00345f8 r5 : c05bc050 r4 : c0412170 [ 0.000000] r3 : 00000000 r2 : c05abfc4 r1 : c0502f5e r0 : 00000047 [ 0.000000] Flags: nZCv IRQs off FIQs off Mode SVC_32 ISA ARM Segment kernel [ 0.000000] Control: 10c5387f Table: 8000404a DAC: 00000017 [ 0.000000] Process swapper (pid: 0, stack limit = 0xc05aa2f8) [ 0.000000] Stack: (0xc05abfd0 to 0xc05ac000) [ 0.000000] bfc0: 10c5387d c0008c00 c0008834 00000000 [ 0.000000] bfe0: 00000000 c00345fc 00000000 10c5387d c05bc050 80008038 00000000 00000000 [ 0.000000] [<c005f360>] (sched_clock_poll+0x3c/0x64) from [<c0008c00>] (start_kernel+0xf4/0x244) [ 0.000000] [<c0008c00>] (start_kernel+0xf4/0x244) from [<80008038>] (0x80008038) [ 0.000000] Code: bad PC value [ 0.000000] ==> sched_clock_poll: using sched_clock_update_fn [ 0.000000] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 0.000000] pgd = c0004000 [ 0.000000] [00000000] *pgd=00000000 [ 0.000000] Internal error: Oops: 80000005 [#2] SMP [ 0.000000] last sysfs file: [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 Tainted: G D W (2.6.37-08042-g51de493-dirty #10) [ 0.000000] PC is at 0x0 [ 0.000000] LR is at sched_clock_poll+0x3c/0x64 [ 0.000000] pc : [<00000000>] lr : [<c005f360>] psr: 60000153 [ 0.000000] sp : c05abd38 ip : 00000000 fp : 00000000 [ 0.000000] r10: 00000001 r9 : 80000005 r8 : c005f324 [ 0.000000] r7 : 00000000 r6 : c005f324 r5 : c05c0be0 r4 : c0412170 [ 0.000000] r3 : 00000000 r2 : c05abd2c r1 : c0502f5e r0 : 00000047 [ 0.000000] Flags: nZCv IRQs on FIQs off Mode SVC_32 ISA ARM Segment kernel [ 0.000000] Control: 10c5387f Table: 8000404a DAC: 00000017 [ 0.000000] Process swapper (pid: 0, stack limit = 0xc05aa2f8) [ 0.000000] Stack: (0xc05abd38 to 0xc05ac000) [ 0.000000] bd20: 00000100 c00a2238 [ 0.000000] bd40: 00000002 00000000 c00a2194 00000001 c0503058 00000000 00000000 c0503058 [ 0.000000] bd60: c05c0be0 c0632840 c05c0be0 00000045 00000000 c005f324 00000001 c00a24a8 [ 0.000000] bd80: c05abd80 c05abd80 00000000 00000101 c05ac044 00000045 00000100 0000000a [ 0.000000] bda0: 00000001 c009bca0 c05aeca4 c05aecb4 00000000 c05aa000 00000000 00000045 [ 0.000000] bdc0: 80000005 00000000 80000005 c05bf0b8 00000000 c009c224 00000045 c005008c [ 0.000000] bde0: c05bf0b8 ffffffff fa240100 c040bd1c c040b87c c05c0b18 c05abe28 00000000 [ 0.000000] be00: c05c0b08 c05abf88 00000000 80000005 00000000 80000005 c05bf0b8 00000000 [ 0.000000] be20: 00000000 c05abe38 c040b87c c040b880 60000153 ffffffff c05aa000 c005e768 [ 0.000000] be40: c05abe3c 00000000 80000005 00000000 c05abf88 c0063d9c c05abf88 00000000 [ 0.000000] be60: 00000001 00000000 80032754 c040dfd4 c05abe94 00000000 c05abea4 c005e06c [ 0.000000] be80: c06e299c c030f650 c05bf0b8 c005e0d8 00000000 00000000 c05bf0b8 00000000 [ 0.000000] bea0: 00000000 c05bf530 c05bf0b8 00000025 c0a1ae30 c0a1bc54 00000001 00000000 [ 0.000000] bec0: 00000000 c00c55b4 00000005 c05c0da0 00000000 c05abf88 80032754 200001d3 [ 0.000000] bee0: 00000000 c005031c 0000111a 00000000 c05aa000 c05f5d18 600001d3 c040b3b4 [ 0.000000] bf00: c05bf0b8 200001d3 c05f5d48 0000111a c05bf0b8 200001d3 c05f5d48 c040b8a8 [ 0.000000] bf20: 200001d3 ffffeee6 200001d3 c0096264 00000047 c05abf65 c0622253 c05f5ca0 [ 0.000000] bf40: 00000000 c0096608 00000001 600001d3 c0632850 205bf0b8 30202020 3030302e [ 0.000000] bf60: 5d303030 c00a0020 a00001d3 c00a2e44 c0632850 c05bbff0 c05abfbc c00345f8 [ 0.000000] bf80: c05c0900 c040be78 00000047 c0502f5e c05abfc4 00000000 c0412170 c05bc050 [ 0.000000] bfa0: c00345f8 c05c0900 80032754 411fc092 00000000 00000000 00000000 c05abfd0 [ 0.000000] bfc0: c005f360 00000000 600001d3 ffffffff 10c5387d c0008c00 c0008834 00000000 [ 0.000000] bfe0: 00000000 c00345fc 00000000 10c5387d c05bc050 80008038 00000000 00000000 [ 0.000000] [<c005f360>] (sched_clock_poll+0x3c/0x64) from [<c00a2238>] (call_timer_fn+0xa4/0x178) [ 0.000000] [<c00a2238>] (call_timer_fn+0xa4/0x178) from [<c00a24a8>] (run_timer_softirq+0x19c/0x1f 4) [ 0.000000] [<c00a24a8>] (run_timer_softirq+0x19c/0x1f4) from [<c009bca0>] (__do_softirq+0xfc/0x208 ) [ 0.000000] [<c009bca0>] (__do_softirq+0xfc/0x208) from [<c009c224>] (irq_exit+0x54/0x98) [ 0.000000] [<c009c224>] (irq_exit+0x54/0x98) from [<c005008c>] (asm_do_IRQ+0x8c/0xc8) [ 0.000000] [<c005008c>] (asm_do_IRQ+0x8c/0xc8) from [<c040bd1c>] (__irq_svc+0x3c/0xe0) [ 0.000000] Exception stack(0xc05abdf0 to 0xc05abe38) [ 0.000000] bde0: c040b87c c05c0b18 c05abe28 00000000 [ 0.000000] be00: c05c0b08 c05abf88 00000000 80000005 00000000 80000005 c05bf0b8 00000000 [ 0.000000] be20: 00000000 c05abe38 c040b87c c040b880 60000153 ffffffff [ 0.000000] [<c040bd1c>] (__irq_svc+0x3c/0xe0) from [<c040b880>] (_raw_spin_unlock_irq+0x28/0x2c) [ 0.000000] [<c040b880>] (_raw_spin_unlock_irq+0x28/0x2c) from [<c005e768>] (die+0x94/0x100) [ 0.000000] [<c005e768>] (die+0x94/0x100) from [<c0063d9c>] (__do_kernel_fault+0x64/0x84) [ 0.000000] [<c0063d9c>] (__do_kernel_fault+0x64/0x84) from [<c040dfd4>] (do_page_fault+0x21c/0x24c ) [ 0.000000] [<c040dfd4>] (do_page_fault+0x21c/0x24c) from [<c005031c>] (do_PrefetchAbort+0x34/0x98) [ 0.000000] [<c005031c>] (do_PrefetchAbort+0x34/0x98) from [<c040be78>] (__pabt_svc+0x58/0xa0) [ 0.000000] Exception stack(0xc05abf88 to 0xc05abfd0) [ 0.000000] bf80: 00000047 c0502f5e c05abfc4 00000000 c0412170 c05bc050 [ 0.000000] bfa0: c00345f8 c05c0900 80032754 411fc092 00000000 00000000 00000000 c05abfd0 [ 0.000000] bfc0: c005f360 00000000 600001d3 ffffffff [ 0.000000] [<c040be78>] (__pabt_svc+0x58/0xa0) from [<c005f360>] (sched_clock_poll+0x3c/0x64) [ 0.000000] [<c005f360>] (sched_clock_poll+0x3c/0x64) from [<c0008c00>] (start_kernel+0xf4/0x244) [ 0.000000] [<c0008c00>] (start_kernel+0xf4/0x244) from [<80008038>] (0x80008038) [ 0.000000] Code: bad PC value [ 0.000000] ---[ end trace 1b75b31a2719ed1d ]--- -- balbi -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
