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Date:	Sat, 11 Oct 2014 10:21:05 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Jiang Liu <jiang.liu@...ux.intel.com>
Cc:	LKP <lkp@...org>, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: [x86, irq] BUG: unable to handle kernel

Greetings,

0day kernel testing robot got the below dmesg and the first bad commit is

https://github.com/jiangliu/linux.git irqdomain/p3v1
commit f0cff632d14bd3c01a8ec7ad0d5fe4f7cafa88fe
Author:     Jiang Liu <jiang.liu@...ux.intel.com>
AuthorDate: Tue Aug 5 16:53:41 2014 +0800
Commit:     Jiang Liu <jiang.liu@...ux.intel.com>
CommitDate: Fri Sep 26 22:06:20 2014 +0800

    x86, irq: Convert IOAPIC to use hierarchy irqdomain interfaces
    
    Convert IOAPIC driver to support and use hierarchy irqdomain interfaces.
    It's a little big, but it always break bisectings if we split it into
    multiple patches.
    
    Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>

+------------------------------------------+------------+------------+------------+
|                                          | 56a45d7013 | f0cff632d1 | a1a76987cc |
+------------------------------------------+------------+------------+------------+
| boot_successes                           | 1000       | 277        | 6          |
| boot_failures                            | 0          | 398        | 6          |
| BUG:unable_to_handle_kernel              | 0          | 398        | 6          |
| Oops                                     | 0          | 398        | 6          |
| RIP:kset_find_obj                        | 0          | 398        | 6          |
| Kernel_panic-not_syncing:Fatal_exception | 0          | 398        | 6          |
| backtrace:__pci_register_driver          | 0          | 398        | 6          |
| backtrace:imsttfb_init                   | 0          | 398        | 6          |
| backtrace:kernel_init_freeable           | 0          | 398        | 6          |
+------------------------------------------+------------+------------+------------+

[    2.690806] crc32c_combine: 8373 self tests passed
[    2.710182] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    2.710182] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    2.731436] BUG: unable to handle kernel 
[    2.731436] BUG: unable to handle kernel paging requestpaging request at fffffffffffffff8
 at fffffffffffffff8
[    2.735257] IP:
[    2.735257] IP: [<ffffffff811734fe>] kset_find_obj+0x2e/0x7e
 [<ffffffff811734fe>] kset_find_obj+0x2e/0x7e
[    2.735257] PGD 1a16067 
[    2.735257] PGD 1a16067 PUD 1a18067 PUD 1a18067 PMD 0 PMD 0 

[    2.735257] Oops: 0000 [#1] 
[    2.735257] Oops: 0000 [#1] DEBUG_PAGEALLOCDEBUG_PAGEALLOC

[    2.735257] Modules linked in:
[    2.735257] Modules linked in:

[    2.735257] CPU: 0 PID: 1 Comm: swapper Not tainted 3.17.0-rc6-gf0cff63 #1431
[    2.735257] CPU: 0 PID: 1 Comm: swapper Not tainted 3.17.0-rc6-gf0cff63 #1431
[    2.735257] task: ffff880000040000 ti: ffff880000044000 task.ti: ffff880000044000
[    2.735257] task: ffff880000040000 ti: ffff880000044000 task.ti: ffff880000044000
[    2.735257] RIP: 0010:[<ffffffff811734fe>] 
[    2.735257] RIP: 0010:[<ffffffff811734fe>]  [<ffffffff811734fe>] kset_find_obj+0x2e/0x7e
 [<ffffffff811734fe>] kset_find_obj+0x2e/0x7e
[    2.735257] RSP: 0000:ffff880000047db8  EFLAGS: 00010286
[    2.735257] RSP: 0000:ffff880000047db8  EFLAGS: 00010286
[    2.735257] RAX: 0000000000000000 RBX: fffffffffffffff8 RCX: ffff880000040730
[    2.735257] RAX: 0000000000000000 RBX: fffffffffffffff8 RCX: ffff880000040730
[    2.735257] RDX: ffff880000040066 RSI: ffffffff818ccadb RDI: 0000000000000000
[    2.735257] RDX: ffff880000040066 RSI: ffffffff818ccadb RDI: 0000000000000000
[    2.735257] RBP: ffff880000047dd8 R08: 0000000000000001 R09: 000000000000005f
[    2.735257] RBP: ffff880000047dd8 R08: 0000000000000001 R09: 000000000000005f
[    2.735257] R10: ffff880000047d38 R11: ffff88000012b940 R12: ffff88000012b928
[    2.735257] R10: ffff880000047d38 R11: ffff88000012b940 R12: ffff88000012b928
[    2.735257] R13: ffff88000012b918 R14: ffffffff818ccadb R15: 0000000000000000
[    2.735257] R13: ffff88000012b918 R14: ffffffff818ccadb R15: 0000000000000000
[    2.735257] FS:  0000000000000000(0000) GS:ffffffff81a27000(0000) knlGS:0000000000000000
[    2.735257] FS:  0000000000000000(0000) GS:ffffffff81a27000(0000) knlGS:0000000000000000
[    2.735257] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[    2.735257] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[    2.735257] CR2: fffffffffffffff8 CR3: 0000000001a15000 CR4: 00000000000006b0
[    2.735257] CR2: fffffffffffffff8 CR3: 0000000001a15000 CR4: 00000000000006b0
[    2.735257] Stack:
[    2.735257] Stack:
[    2.735257]  0000000000000050
[    2.735257]  0000000000000050 ffffffff81c15268 ffffffff81c15268 ffff88001243db58 ffff88001243db58 ffffffff81c13500 ffffffff81c13500

[    2.735257]  ffff880000047e00
[    2.735257]  ffff880000047e00 ffffffff812dbb66 ffffffff812dbb66 ffffffff81c15268 ffffffff81c15268 0000000000000000 0000000000000000

[    2.735257]  ffff88001243db58
[    2.735257]  ffff88001243db58 ffff880000047e30 ffff880000047e30 ffffffff812cfbac ffffffff812cfbac ffffffff81c15268 ffffffff81c15268

[    2.735257] Call Trace:
[    2.735257] Call Trace:
[    2.735257]  [<ffffffff812dbb66>] module_add_driver+0x37/0xcc
[    2.735257]  [<ffffffff812dbb66>] module_add_driver+0x37/0xcc
[    2.735257]  [<ffffffff812cfbac>] bus_add_driver+0xf3/0x1e7
[    2.735257]  [<ffffffff812cfbac>] bus_add_driver+0xf3/0x1e7
[    2.735257]  [<ffffffff812d0ce4>] driver_register+0x89/0xc5
[    2.735257]  [<ffffffff812d0ce4>] driver_register+0x89/0xc5
[    2.735257]  [<ffffffff81198c9d>] __pci_register_driver+0x5b/0x5e
[    2.735257]  [<ffffffff81198c9d>] __pci_register_driver+0x5b/0x5e
[    2.735257]  [<ffffffff81cf0776>] ? i740fb_init+0x79/0x79
[    2.735257]  [<ffffffff81cf0776>] ? i740fb_init+0x79/0x79
[    2.735257]  [<ffffffff81cf07c8>] imsttfb_init+0x52/0xef
[    2.735257]  [<ffffffff81cf07c8>] imsttfb_init+0x52/0xef
[    2.735257]  [<ffffffff81cf0776>] ? i740fb_init+0x79/0x79
[    2.735257]  [<ffffffff81cf0776>] ? i740fb_init+0x79/0x79
[    2.735257]  [<ffffffff810003b8>] do_one_initcall+0x19b/0x1b0
[    2.735257]  [<ffffffff810003b8>] do_one_initcall+0x19b/0x1b0
[    2.735257]  [<ffffffff81077599>] ? parse_args+0x22c/0x360
[    2.735257]  [<ffffffff81077599>] ? parse_args+0x22c/0x360
[    2.735257]  [<ffffffff81cd5f4b>] kernel_init_freeable+0xf7/0x17a
[    2.735257]  [<ffffffff81cd5f4b>] kernel_init_freeable+0xf7/0x17a
[    2.735257]  [<ffffffff81581758>] ? rest_init+0xbc/0xbc
[    2.735257]  [<ffffffff81581758>] ? rest_init+0xbc/0xbc
[    2.735257]  [<ffffffff81581761>] kernel_init+0x9/0xd5
[    2.735257]  [<ffffffff81581761>] kernel_init+0x9/0xd5
[    2.735257]  [<ffffffff8159047a>] ret_from_fork+0x7a/0xb0
[    2.735257]  [<ffffffff8159047a>] ret_from_fork+0x7a/0xb0
[    2.735257]  [<ffffffff81581758>] ? rest_init+0xbc/0xbc
[    2.735257]  [<ffffffff81581758>] ? rest_init+0xbc/0xbc
[    2.735257] Code: 
[    2.735257] Code: e5 e5 41 41 56 56 41 41 55 55 41 41 54 54 4c 4c 8d 8d 67 67 10 10 53 53 49 49 89 89 fd fd 49 49 89 89 f6 f6 4c 4c 89 89 e7 e7 e8 e8 32 32 c2 c2 41 41 00 00 49 49 8b 8b 45 45 00 00 48 48 8d 8d 58 58 f8 f8 48 48 8d 8d 43 43 08 08 49 49 39 39 c5 c5 74 74 39 39 <48> <48> 8b 8b 3b 3b 48 48 85 85 ff ff 74 74 27 27 4c 4c 89 89 f6 f6 e8 e8 39 39 4a 4a 00 00 00 00 85 85 c0 c0 75 75 1b 1b 8b 8b 

[    2.735257] RIP 
[    2.735257] RIP  [<ffffffff811734fe>] kset_find_obj+0x2e/0x7e
 [<ffffffff811734fe>] kset_find_obj+0x2e/0x7e
[    2.735257]  RSP <ffff880000047db8>
[    2.735257]  RSP <ffff880000047db8>
[    2.735257] CR2: fffffffffffffff8
[    2.735257] CR2: fffffffffffffff8
[    2.735257] ---[ end trace 149a66b8c5f660be ]---
[    2.735257] ---[ end trace 149a66b8c5f660be ]---

git bisect start a1a76987cc9d7914f4a7c4f6603be16fc4a96306 bfe01a5ba2490f299e1d2d5508cbbbadd897bbe9 --
git bisect good 5978adbd3eed4e876e6841e9cc35da05efac529b  # 23:32    675+      0  x86: irq_remapping: Introduce new interfaces to support hierarchy irqdomain
git bisect  bad 4eb4d80e3b0556e6b678307731d19454934b71b7  # 23:32     29-      1  x86, irq: Kill x86_io_apic_ops.print_entries and related interfaces
git bisect good 0a6a0c523fc095099c5a73fe05d29558aa50d3f9  # 23:41    675+      0  x86, irq: Clean up unused MSI related code and interfaces
git bisect good cbbc1e9fd24c705d5b958d4b09e75e9da6461857  # 23:50    675+      0  x86, irq: Kill unused setup_timer_IRQ0_pin()
git bisect good 56a45d70134ae72f85c87fb77caf571968907854  # 00:03    675+      0  x86, irq: Refine the way to allocate irq_cfg for legacy IRQs
git bisect  bad 27465585446f65cb231c4866e8cde1e1dcdfb31b  # 00:12     37-    307  x86, irq: Kill unused old IOAPIC irqdomain interfaces
git bisect  bad f0cff632d14bd3c01a8ec7ad0d5fe4f7cafa88fe  # 00:23     41-     69  x86, irq: Convert IOAPIC to use hierarchy irqdomain interfaces
# first bad commit: [f0cff632d14bd3c01a8ec7ad0d5fe4f7cafa88fe] x86, irq: Convert IOAPIC to use hierarchy irqdomain interfaces
git bisect good 56a45d70134ae72f85c87fb77caf571968907854  # 00:35   1000+      0  x86, irq: Refine the way to allocate irq_cfg for legacy IRQs
git bisect  bad a1a76987cc9d7914f4a7c4f6603be16fc4a96306  # 00:35      0-      6  Merge remote-tracking branch 'jiangliu/irqdomain/p3v1' into for-suravee
git bisect good c798360cd1438090d51eeaa8e67985da11362eba  # 00:43   1000+      0  Merge branch 'for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
git bisect good 22f3190416445059ec17332efd71e78ec969d37f  # 00:52   1000+      0  Add linux-next specific files for 20141010


This script may reproduce the error.

----------------------------------------------------------------------------
#!/bin/bash

kernel=$1
initrd=yocto-minimal-x86_64.cgz

wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$initrd

kvm=(
	qemu-system-x86_64
	-cpu kvm64
	-enable-kvm
	-kernel $kernel
	-initrd $initrd
	-m 320
	-smp 1
	-net nic,vlan=1,model=e1000
	-net user,vlan=1
	-boot order=nc
	-no-reboot
	-watchdog i6300esb
	-rtc base=localtime
	-serial stdio
	-display none
	-monitor null 
)

append=(
	hung_task_panic=1
	earlyprintk=ttyS0,115200
	debug
	apic=debug
	sysrq_always_enabled
	rcupdate.rcu_cpu_stall_timeout=100
	panic=-1
	softlockup_panic=1
	nmi_watchdog=panic
	oops=panic
	load_ramdisk=2
	prompt_ramdisk=0
	console=ttyS0,115200
	console=tty0
	vga=normal
	root=/dev/ram0
	rw
	drbd.minor_count=8
)

"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------

Thanks,
Fengguang

View attachment "dmesg-yocto-lkp-nex05-128:20141011003115:x86_64-randconfig-c3-1010:3.17.0-rc6-gf0cff63:1431" of type "text/plain" (51370 bytes)

View attachment "config-3.17.0-rc6-gf0cff63" of type "text/plain" (90856 bytes)

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