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Date: Mon, 23 Jun 2014 16:23:21 +0800
From: Jet Chen <jet.chen@...el.com>
To: Lan Tianyu <tianyu.lan@...el.com>
CC: Fengguang Wu <fengguang.wu@...el.com>, LKP <lkp@...org>,
LKML <linux-kernel@...r.kernel.org>
Subject: [Device/core] BUG: unable to handle kernel NULL pointer dereference
at (null)
Hi Tianyu,
0day kernel testing robot got the below dmesg and the first bad commit is
git://bee.sh.intel.com/git/tianyu/usb.git dep_support
commit 6ce060a8738b36c60ad4b2567d393132b2620121
Author: Lan Tianyu <tianyu.lan@...el.com>
AuthorDate: Thu Apr 10 13:18:43 2014 +0800
Commit: Lan Tianyu <tianyu.lan@...el.com>
CommitDate: Wed Jun 18 10:40:29 2014 +0800
Device/core: Add platform_dev_attach/detach_notify() callback
For ACPI platform, ACPI table provides device probe dependency information
and ACPI subsystem needs to check the driver probing status of dependent
devices. This patch is to add two callbacks to notify platform when device
is attached and detached from driver.
Signed-off-by: Lan Tianyu <tianyu.lan@...el.com>
+------------------------------------------------------------+------------+------------+
| | 96e8c1a7c3 | 6ce060a873 |
+------------------------------------------------------------+------------+------------+
| boot_successes | 60 | 0 |
| boot_failures | 0 | 20 |
| BUG:unable_to_handle_kernel_NULL_pointer_dereference | 0 | 20 |
| Oops | 0 | 20 |
| WARNING:CPU:PID:at_kernel/smp.c:smp_call_function_single() | 0 | 20 |
| Kernel_panic-not_syncing:Attempted_to_kill_init_exitcode= | 0 | 20 |
| backtrace:__platform_driver_register | 0 | 20 |
| backtrace:regulator_dummy_init | 0 | 20 |
| backtrace:regulator_init | 0 | 20 |
| backtrace:kernel_init_freeable | 0 | 20 |
+------------------------------------------------------------+------------+------------+
[ 0.180030] prefetch64-sse: 137.000 MB/sec
[ 0.220055] generic_sse: 132.000 MB/sec
[ 0.220691] xor: using function: prefetch64-sse (137.000 MB/sec)
[ 0.222565] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 0.223565] IP: [< (null)>] (null)
[ 0.224000] PGD 0 [ 0.224000] Oops: 0010 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[ 0.224000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.16.0-rc1-00011-g6ce060a #1
[ 0.224000] task: ffff8800128c8000 ti: ffff8800128c4000 task.ti: ffff8800128c4000
[ 0.224000] RIP: 0010:[<0000000000000000>] [< (null)>] (null)
[ 0.224000] RSP: 0000:ffff8800128c7d68 EFLAGS: 00010246
[ 0.224000] RAX: ffff8800128abbe8 RBX: ffff8800128ab7c0 RCX: 000000000000008f
[ 0.224000] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff8800128ab7c0
[ 0.224000] RBP: ffff8800128c7d90 R08: 0000000000000002 R09: 000000000011e08f
[ 0.224000] R10: 0000000000000000 R11: 00000000001d2f90 R12: ffffffff827fda98
[ 0.224000] R13: ffffffff827fda98 R14: 0000000000000000 R15: 0000000000000000
[ 0.224000] FS: 0000000000000000(0000) GS:ffff880013600000(0000) knlGS:0000000000000000
[ 0.224000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 0.224000] CR2: 0000000000000000 CR3: 000000000260d000 CR4: 00000000000006f0
[ 0.224000] Stack:
[ 0.224000] ffffffff816ee1a7 ffff8800128ab7c0 ffffffff827fda98 ffff8800128ab820
[ 0.224000] 0000000000000000 ffff8800128c7db8 ffffffff816ee4c6 0000000000000000
[ 0.224000] ffffffff827fda98 ffffffff816ee431 ffff8800128c7df0 ffffffff816ec084
[ 0.224000] Call Trace:
[ 0.224000] [<ffffffff816ee1a7>] ? driver_probe_device+0x8c/0x316
[ 0.224000] [<ffffffff816ee4c6>] __driver_attach+0x95/0xd3
[ 0.224000] [<ffffffff816ee431>] ? driver_probe_device+0x316/0x316
[ 0.224000] [<ffffffff816ec084>] bus_for_each_dev+0xbe/0xc9
[ 0.224000] [<ffffffff816ee65b>] driver_attach+0x20/0x29
[ 0.224000] [<ffffffff816ecc5d>] bus_add_driver+0x112/0x2ab
[ 0.224000] [<ffffffff816eefe3>] driver_register+0xec/0x152
[ 0.224000] [<ffffffff816f096f>] __platform_driver_register+0x61/0x6a
[ 0.224000] [<ffffffff82c81ca7>] regulator_dummy_init+0xa0/0xde
[ 0.224000] [<ffffffff82c81a2f>] regulator_init+0x90/0x9c
[ 0.224000] [<ffffffff82c8199f>] ? virtio_balloon_driver_init+0x20/0x20
[ 0.224000] [<ffffffff82c486e9>] do_one_initcall+0x171/0x248
[ 0.224000] [<ffffffff810e2f00>] ? parameq+0x6/0x2d
[ 0.224000] [<ffffffff810e31bd>] ? parse_args+0x296/0x3e8
[ 0.224000] [<ffffffff82c48aa9>] kernel_init_freeable+0x2e9/0x3e8
[ 0.224000] [<ffffffff82c47911>] ? do_early_param+0xd7/0xd7
[ 0.224000] [<ffffffff81caf6a1>] ? rest_init+0x115/0x115
[ 0.224000] [<ffffffff81caf6b1>] kernel_init+0x10/0x175
[ 0.224000] [<ffffffff81cd533c>] ret_from_fork+0x7c/0xb0
[ 0.224000] [<ffffffff81caf6a1>] ? rest_init+0x115/0x115
[ 0.224000] Code: Bad RIP value.
[ 0.224000] RIP [< (null)>] (null)
[ 0.224000] RSP <ffff8800128c7d68>
[ 0.224000] CR2: 0000000000000000
[ 0.224000] ---[ end trace d3295e197e7ac925 ]---
[ 0.224000] ------------[ cut here ]------------
git bisect start aafca41bf8b2c093befa74e04c59580a4401b8e9 a497c3ba1d97fc69c1e78e7b96435ba8c2cb42ee --
git bisect good 5bb41e68bb216e78a850319a64b549c0ceaeddf8 # 15:15 20+ 0 Merge 'ipvs-next/master' into devel-hourly-2014062314
git bisect good 8c804d4bb30cfef4a4af0f561d6ef31e84014ad5 # 15:23 20+ 0 Merge 'asoc/topic/intel' into devel-hourly-2014062314
git bisect good b3b5fba3e162ab85c6b32b5425074cce21fbdfbc # 15:28 20+ 0 Merge 'block/for-linus' into devel-hourly-2014062314
git bisect bad 07e8581d455a832a85e7917a9601aa1aa4b30965 # 15:29 0- 20 Merge 'tianyu/dep_support' into devel-hourly-2014062314
git bisect good 4033d5f4a151180ad86e6b0b45760f872b07f3e3 # 15:34 20+ 0 Merge 'net-next/master' into devel-hourly-2014062314
git bisect good ca2bb6349593d783b7524e550d468d3ba259d62b # 15:40 20+ 0 I2C/ACPI: Add i2c ACPI operation region support
git bisect bad f93d3e49ea1609fe7c7828a94b16619ff68c4f27 # 15:43 0- 20 ACPI: Resolve battery probe issue on the T100TA
git bisect bad 6ce060a8738b36c60ad4b2567d393132b2620121 # 15:46 0- 20 Device/core: Add platform_dev_attach/detach_notify() callback
git bisect good 96e8c1a7c36ba7e14644aba544283ff4dfa2bff8 # 15:50 20+ 0 I2C/ACPI: Clean up I2C ACPI code and Add CONFIG_I2C_ACPI config
# first bad commit: [6ce060a8738b36c60ad4b2567d393132b2620121] Device/core: Add platform_dev_attach/detach_notify() callback
git bisect good 96e8c1a7c36ba7e14644aba544283ff4dfa2bff8 # 15:52 60+ 0 I2C/ACPI: Clean up I2C ACPI code and Add CONFIG_I2C_ACPI config
git bisect bad aafca41bf8b2c093befa74e04c59580a4401b8e9 # 15:52 0- 13 0day head guard for 'devel-hourly-2014062314'
git bisect good a497c3ba1d97fc69c1e78e7b96435ba8c2cb42ee # 15:56 60+ 0 Linux 3.16-rc2
git bisect good 58ae500a03a6bf68eee323c342431bfdd3f460b6 # 16:03 60+ 0 Add linux-next specific files for 20140623
This script may reproduce the error.
-----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
kvm=(
qemu-system-x86_64 -cpu kvm64 -enable-kvm
-kernel $kernel
-smp 2
-m 256M
-net nic,vlan=0,macaddr=00:00:00:00:00:00,model=virtio
-net user,vlan=0
-net nic,vlan=1,model=e1000
-net user,vlan=1
-boot order=nc
-no-reboot
-watchdog i6300esb
-serial stdio
-display none
-monitor null
)
append=(
debug
sched_debug
apic=debug
ignore_loglevel
sysrq_always_enabled
panic=10
prompt_ramdisk=0
earlyprintk=ttyS0,115200
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
)
"${kvm[@]}" --append "${append[*]}"
-----------------------------------------------------------------------------
Thanks,
Jet
View attachment "dmesg-yocto-ivb42-1:20140623154546:x86_64-randconfig-hsxa1-06231457:3.16.0-rc1-00011-g6ce060a:1" of type "text/plain" (23282 bytes)
Download attachment "x86_64-randconfig-hsxa1-06231457-aafca41bf8b2c093befa74e04c59580a4401b8e9-BUG:-unable-to-handle-kernel-NULL-pointer-dereference-117640.log" of type "application/octet-stream" (41884 bytes)
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