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Date: Thu, 11 Dec 2014 16:20:12 +0800
From: Huang Ying <ying.huang@...el.com>
To: Dietmar Eggemann <dietmar.eggemann@....com>
Cc: Michael Turquette <mturquette@...erred.io>,
LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org>
Subject: [LKP] [sched] BUG: unable to handle kernel NULL pointer dereference
at 0000003c
FYI, we noticed the below changes on
https://git.linaro.org/people/mturquette/linux.git eas-next
commit 1fadb581b0be9420b143e43ff2f4a07ea7e45f6c ("sched: Make usage and load tracking cpu scale-invariant")
+-------------------------------------------------------+------------+------------+
| | e754569101 | 1fadb581b0 |
+-------------------------------------------------------+------------+------------+
| boot_successes | 20 | 0 |
| early-boot-hang | 1 | |
| boot_failures | 0 | 10 |
| BUG:unable_to_handle_kernel | 0 | 8 |
| Oops | 0 | 8 |
| EIP_is_at_default_scale_cpu_capacity | 0 | 8 |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 8 |
| backtrace:acpi_load_tables | 0 | 7 |
| backtrace:acpi_early_init | 0 | 7 |
| backtrace:acpi_ds_auto_serialize_method | 0 | 1 |
| backtrace:acpi_ds_init_one_object | 0 | 1 |
| BUG:kernel_boot_crashed | 0 | 2 |
| backtrace:vfs_kern_mount | 0 | 1 |
| backtrace:mnt_init | 0 | 1 |
| backtrace:vfs_caches_init | 0 | 1 |
+-------------------------------------------------------+------------+------------+
[ 0.008000] Calibrating delay loop (skipped) preset value.. 5387.12 BogoMIPS (lpj=10774248)
[ 0.008000] pid_max: default: 32768 minimum: 301
[ 0.008000] ACPI: Core revision 20140926
[ 0.008008] BUG: unable to handle kernel NULL pointer dereference at 0000003c
[ 0.008941] IP: [<cb2854bf>] default_scale_cpu_capacity+0xb/0x3f
[ 0.009921] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 0.010656] Oops: 0000 [#1] PREEMPT SMP
[ 0.011229] Modules linked in:
[ 0.011641] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.18.0-00170-g02b1eae #75
[ 0.012000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 0.012000] task: cbd02320 ti: cbcfc000 task.ti: cbcfc000
[ 0.012000] EIP: 0060:[<cb2854bf>] EFLAGS: 00210046 CPU: 0
[ 0.012000] EIP is at default_scale_cpu_capacity+0xb/0x3f
[ 0.012000] EAX: 00000000 EBX: 00000400 ECX: 00000000 EDX: 00000000
[ 0.012000] ESI: 00000000 EDI: cbd02320 EBP: d4409ed4 ESP: d4409ed0
[ 0.012000] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 0.012000] CR0: 80050033 CR2: 0000003c CR3: 0c01f000 CR4: 000406b0
[ 0.012000] Stack:
[ 0.012000] 00000400 d4409edc cb285e66 d4409eec cb285e88 00000000 cbd02364 d4409f50
[ 0.012000] cb286be9 00000000 00000000 00000000 cb281a77 d4409f34 d48ce760 00000000
[ 0.012000] d4409f34 0029e5eb d48ce278 d48ce220 007a15c4 00000000 00000000 00000000
[ 0.012000] Call Trace:
[ 0.012000] [<cb285e66>] arch_scale_cpu_capacity+0xd/0xf
[ 0.012000] [<cb285e88>] contrib_scale_factor+0x20/0x2a
[ 0.012000] [<cb286be9>] task_tick_fair+0x10c/0x6f5
[ 0.012000] [<cb281a77>] ? sched_clock_cpu+0x1b2/0x1da
[ 0.012000] [<cb27ba14>] scheduler_tick+0x48/0x75
[ 0.012000] [<cb2c24d9>] update_process_times+0x62/0x6e
[ 0.012000] [<cb2d181f>] tick_periodic+0xb3/0xb5
[ 0.012000] [<cb2d1ac7>] tick_handle_periodic+0x21/0xa5
[ 0.012000] [<cb205f94>] timer_interrupt+0x12/0x19
[ 0.012000] [<cb2a5fea>] handle_irq_event_percpu+0x104/0x374
[ 0.012000] [<cb2a628b>] handle_irq_event+0x31/0x48
[ 0.012000] [<cb2aa39a>] handle_level_irq+0xeb/0x12c
[ 0.012000] [<cb2aa2af>] ? unmask_irq+0x3a/0x3a
[ 0.012000] [<cb20581a>] handle_irq+0x10d/0x161
[ 0.012000] <IRQ>
[ 0.012000] [<cb205283>] do_IRQ+0x42/0xfa
[ 0.012000] [<cb8bad2e>] common_interrupt+0x2e/0x34
[ 0.012000] [<cb54007b>] ? acpi_tb_allocate_owner_id+0x4e/0x5d
[ 0.012000] [<cb4d7d20>] ? check_preemption_disabled+0x9/0x172
[ 0.012000] [<cb4d7e9b>] debug_smp_processor_id+0x12/0x14
[ 0.012000] [<cb37d2dc>] kmem_cache_alloc+0x66/0x2af
[ 0.012000] [<cb279c8d>] ? preempt_count_sub+0xe7/0x1b0
[ 0.012000] [<cb54560e>] acpi_ut_allocate_object_desc_dbg+0x3a/0x74
[ 0.012000] [<cb5456bb>] acpi_ut_create_internal_object_dbg+0x18/0xa4
[ 0.012000] [<cb521384>] acpi_ds_create_operand+0x2e5/0x374
[ 0.012000] [<cb279c8d>] ? preempt_count_sub+0xe7/0x1b0
[ 0.012000] [<cb521490>] acpi_ds_create_operands+0x7d/0xd1
[ 0.012000] [<cb53d12c>] ? acpi_ps_init_op+0x8/0x12
[ 0.012000] [<cb53ad8f>] ? acpi_ps_get_next_simple_arg+0xd7/0xe2
[ 0.012000] [<cb522694>] acpi_ds_load1_end_op+0x274/0x309
[ 0.012000] [<cb53ba9c>] acpi_ps_parse_loop+0x811/0x89a
[ 0.012000] [<cb53cad5>] acpi_ps_parse_aml+0x104/0x42d
[ 0.012000] [<cb536472>] acpi_ns_one_complete_parse+0x1a3/0x1b7
[ 0.012000] [<cb5364a3>] acpi_ns_parse_table+0x1d/0x63
[ 0.012000] [<cb535b04>] acpi_ns_load_table+0x8e/0xf5
[ 0.012000] [<cbfb445d>] acpi_load_tables+0xd2/0x1cd
[ 0.012000] [<cbfb3279>] acpi_early_init+0xd1/0x1b6
[ 0.012000] [<cbf78df7>] start_kernel+0x444/0x49e
[ 0.012000] [<cbf782c2>] i386_start_kernel+0x90/0x94
[ 0.012000] Code: 10 8b 14 95 a0 37 f7 cb 89 bc 10 90 00 00 00 eb 07 31 c0 e9 b0 fd ff ff 83 c4 1c 5b 5e 5f 5d c3 55 89 e5 53 e8 e7 5c 63 00 31 c9 <f6> 40 3c 80 89 c3 74 09 31 c9 83 78 68 01 0f 97 c1 8b 04 8d e8
[ 0.012000] EIP: [<cb2854bf>] default_scale_cpu_capacity+0xb/0x3f SS:ESP 0068:d4409ed0
[ 0.012000] CR2: 000000000000003c
[ 0.012000] ---[ end trace 361e6bc79614a98d ]---
[ 0.012000] Kernel panic - not syncing: Fatal exception in interrupt
Thanks,
Huang, Ying
View attachment ".dmesg" of type "text/plain" (16809 bytes)
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