Messages in this thread | | | Date | Tue, 24 Jul 2007 11:37:16 +0100 (IST) | From | Mel Gorman <> | Subject | Re: Linus 2.6.23-rc1: ACPI-related oops on x86_64 |
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On Mon, 23 Jul 2007, Len Brown wrote:
> On Monday 23 July 2007 05:50, Mel Gorman wrote: > >> This was seen on a machine on test.kernel.org; >> >> Unable to handle kernel NULL pointer dereference at 0000000000000000 >> RIP: >> [<ffffffff8037379b>] acpi_processor_throttling_seq_show+0xa7/0xd6 >> PGD 3bd9e067 PUD 3bc6a067 PMD 0 >> Oops: 0000 [1] SMP >> CPU 3 >> Modules linked in: video output button battery floppy ac lp parport_pc >> parport nvram amd_rng rng_core i2c_amd756 i2c_core >> Pid: 1522, comm: head Not tainted 2.6.23-rc1-autokern1 #1 >> RIP: 0010:[<ffffffff8037379b>] [<ffffffff8037379b>] >> acpi_processor_throttling_seq_show+0xa7/0xd6 >> RSP: 0018:ffff81003c4a5e48 EFLAGS: 00010246 >> RAX: 0000000000000020 RBX: ffff810037ea1800 RCX: 0000000000000000 >> RDX: 000000000000002a RSI: ffffffff80599c02 RDI: ffff810037c6a9c0 >> RBP: ffff810037c6a9c0 R08: ffff81003c3e3051 R09: ffff810037c6a9c0 >> R10: ffffffffffffffff R11: ffffffff80373e66 R12: 0000000000000000 >> R13: 0000000000000000 R14: 0000000000000000 R15: 00007fffd59dcd40 >> FS: 00002b7ad50e36f0(0000) GS:ffff81003ee56b40(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b >> CR2: 0000000000000000 CR3: 000000003bd9b000 CR4: 00000000000006e0 >> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 >> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 >> Process head (pid: 1522, threadinfo ffff81003c4a4000, task ffff81003ee81040) >> Stack: ffff81003eed7180 ffff810037c6a9c0 0000000000000001 0000000000000001 >> 0000000000002000 ffffffff802a77b3 ffff81003c4a5f50 ffff81003e2f8ec0 >> ffff810037c6a9f0 ffff81003de65000 0000000000000000 fffffffffffffffb >> Call Trace: >> [<ffffffff802a77b3>] seq_read+0x105/0x28e >> [<ffffffff802a76ae>] seq_read+0x0/0x28e >> [<ffffffff802c8501>] proc_reg_read+0x80/0x9a >> [<ffffffff8028eb3d>] vfs_read+0xcb/0x153 >> [<ffffffff8028eed9>] sys_read+0x45/0x6e >> [<ffffffff8020bc6e>] system_call+0x7e/0x83 >> FATAL: Error inserting acpi_cpufreq >> (/lib/modules/2.6.23-rc1-autokern1/kernel/arch/x86_64/kernel/cpufreq/acpi-cpufreq.ko): >> No such device >> >> Full oops is at http://test.kernel.org/abat/100837/debug/console.log >> Config file at http://test.kernel.org/abat/100837/build/dotconfig > > try this, > thanks, > -Len > > Subject: fix oops due to typo in new throttling code > From: Luming Yu <luming.yu@gmail.com> >
This works. When applied, the output to console is
FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.23-rc1-autokern1/kernel/arch/x86_64/kernel/cpufreq/acpi-cpufreq.ko): No such device
Thanks Len
> > Signed-off-by: Luming Yu <luming.yu@gmail.com> > Signed-off-by: Andrew Morton <akpm@linux-foundation.org> > Signed-off-by: Len Brown <len.brown@intel.com> >
Tested-by: Mel Gorman <mel@csn.ul.ie>
> --- > > drivers/acpi/processor_throttling.c | 6 ++++-- > 1 files changed, 4 insertions(+), 2 deletions(-) > > Index: linus/drivers/acpi/processor_throttling.c > =================================================================== > --- linus.orig/drivers/acpi/processor_throttling.c > +++ linus/drivers/acpi/processor_throttling.c > @@ -658,18 +658,20 @@ static int acpi_processor_throttling_seq > pr->throttling.state_count - 1); > > seq_puts(seq, "states:\n"); > - if (acpi_processor_get_throttling == acpi_processor_get_throttling_fadt) > + if (pr->throttling.acpi_processor_get_throttling == > + acpi_processor_get_throttling_fadt) { > for (i = 0; i < pr->throttling.state_count; i++) > seq_printf(seq, " %cT%d: %02d%%\n", > (i == pr->throttling.state ? '*' : ' '), i, > (pr->throttling.states[i].performance ? pr-> > throttling.states[i].performance / 10 : 0)); > - else > + } else { > for (i = 0; i < pr->throttling.state_count; i++) > seq_printf(seq, " %cT%d: %02d%%\n", > (i == pr->throttling.state ? '*' : ' '), i, > (int)pr->throttling.states_tss[i]. > freqpercentage); > + } > > end: > return 0; >
-- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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