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Date: Thu, 20 Aug 2015 13:36:17 +0800
From: kernel test robot <ying.huang@...el.com>
TO: Sudip Mukherjee <sudipm.mukherjee@...il.com>
CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [lkp] [auxdisplay] 4edd70c133f: BUG: unable to handle kernel
FYI, we noticed the below changes on
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 4edd70c133f3921c594883d8f9da31a7261f8b4f ("auxdisplay: ks0108: use new parport device model")
+------------------------------------------+------------+------------+
| | c9efdbe634 | 4edd70c133 |
+------------------------------------------+------------+------------+
| boot_successes | 72 | 0 |
| boot_failures | 0 | 32 |
| BUG:unable_to_handle_kernel | 0 | 32 |
| Oops | 0 | 32 |
| EIP_is_at_ks0108_writecontrol | 0 | 32 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 32 |
| backtrace:cfag12864b_page | 0 | 32 |
| backtrace:cfag12864b_init | 0 | 32 |
| backtrace:kernel_init_freeable | 0 | 32 |
+------------------------------------------+------------+------------+
[ 1.646998] device id = 2670
[ 1.648297] slram: not enough parameters.
[ 1.648297] slram: not enough parameters.
[ 1.655191] BUG: unable to handle kernel
[ 1.655191] BUG: unable to handle kernel NULL pointer dereferenceNULL pointer dereference at 00000368
at 00000368
[ 1.656053] IP:
[ 1.656053] IP: [<41505410>] ks0108_writecontrol+0x20/0x30
[<41505410>] ks0108_writecontrol+0x20/0x30
[ 1.656053] *pde = 00000000
[ 1.656053] *pde = 00000000
[ 1.656053] Oops: 0000 [#1]
[ 1.656053] Oops: 0000 [#1] DEBUG_PAGEALLOC DEBUG_PAGEALLOC
[ 1.656053] Modules linked in:
[ 1.656053] Modules linked in:
[ 1.656053] CPU: 0 PID: 1 Comm: swapper Not tainted 4.2.0-rc4-00102-g4edd70c #567
[ 1.656053] CPU: 0 PID: 1 Comm: swapper Not tainted 4.2.0-rc4-00102-g4edd70c #567
[ 1.656053] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 1.656053] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 1.656053] task: 40256040 ti: 40266000 task.ti: 40266000
[ 1.656053] task: 40256040 ti: 40266000 task.ti: 40266000
[ 1.656053] EIP: 0060:[<41505410>] EFLAGS: 00010247 CPU: 0
[ 1.656053] EIP: 0060:[<41505410>] EFLAGS: 00010247 CPU: 0
[ 1.656053] EIP is at ks0108_writecontrol+0x20/0x30
[ 1.656053] EIP is at ks0108_writecontrol+0x20/0x30
[ 1.656053] EAX: 00000000 EBX: 4197800a ECX: 00000000 EDX: 0000000a
[ 1.656053] EAX: 00000000 EBX: 4197800a ECX: 00000000 EDX: 0000000a
[ 1.656053] ESI: 00000000 EDI: 504fc120 EBP: 40267eec ESP: 40267ee8
[ 1.656053] ESI: 00000000 EDI: 504fc120 EBP: 40267eec ESP: 40267ee8
[ 1.656053] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 1.656053] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 1.656053] CR0: 8005003b CR2: 00000368 CR3: 01c2e000 CR4: 00000690
[ 1.656053] CR0: 8005003b CR2: 00000368 CR3: 01c2e000 CR4: 00000690
[ 1.656053] Stack:
[ 1.656053] Stack:
[ 1.656053] 41978000
[ 1.656053] 41978000 40267ef4 40267ef4 415055f7 415055f7 40267f00 40267f00 4150561c 4150561c 41978040 41978040 40267f10 40267f10 41bc9eb0 41bc9eb0
[ 1.656053] 419780c0
[ 1.656053] 419780c0 41bc9de7 41bc9de7 40267f84 40267f84 41000442 41000442 000000d0 000000d0 418b5342 418b5342 41bc9de7 41bc9de7 00000160 00000160
[ 1.656053] 41971508
[ 1.656053] 41971508 40267f70 40267f70 410693af 410693af 00000000 00000000 00000000 00000000 40267f44 40267f44 4108940b 4108940b 00000006 00000006
[ 1.656053] Call Trace:
[ 1.656053] Call Trace:
[ 1.656053] [<415055f7>] cfag12864b_e+0x37/0x40
[ 1.656053] [<415055f7>] cfag12864b_e+0x37/0x40
[ 1.656053] [<4150561c>] cfag12864b_page+0x1c/0x30
[ 1.656053] [<4150561c>] cfag12864b_page+0x1c/0x30
[ 1.656053] [<41bc9eb0>] cfag12864b_init+0xc9/0x127
[ 1.656053] [<41bc9eb0>] cfag12864b_init+0xc9/0x127
[ 1.656053] [<41bc9de7>] ? ks0108_init+0x16/0x16
[ 1.656053] [<41bc9de7>] ? ks0108_init+0x16/0x16
[ 1.656053] [<41000442>] do_one_initcall+0x82/0x1f0
[ 1.656053] [<41000442>] do_one_initcall+0x82/0x1f0
[ 1.656053] [<41bc9de7>] ? ks0108_init+0x16/0x16
[ 1.656053] [<41bc9de7>] ? ks0108_init+0x16/0x16
[ 1.656053] [<410693af>] ? parse_args+0x1df/0x410
[ 1.656053] [<410693af>] ? parse_args+0x1df/0x410
[ 1.656053] [<4108940b>] ? trace_hardirqs_on+0xb/0x10
[ 1.656053] [<4108940b>] ? trace_hardirqs_on+0xb/0x10
[ 1.656053] [<41b9ac44>] ? kernel_init_freeable+0x16c/0x209
[ 1.656053] [<41b9ac44>] ? kernel_init_freeable+0x16c/0x209
[ 1.656053] [<41b9ac64>] kernel_init_freeable+0x18c/0x209
[ 1.656053] [<41b9ac64>] kernel_init_freeable+0x18c/0x209
[ 1.656053] [<4168cbe0>] kernel_init+0x10/0xe0
[ 1.656053] [<4168cbe0>] kernel_init+0x10/0xe0
[ 1.656053] [<41073827>] ? schedule_tail+0x17/0x60
[ 1.656053] [<41073827>] ? schedule_tail+0x17/0x60
[ 1.656053] [<416a2de0>] ret_from_kernel_thread+0x20/0x30
[ 1.656053] [<416a2de0>] ret_from_kernel_thread+0x20/0x30
[ 1.656053] [<4168cbd0>] ? rest_init+0x120/0x120
[ 1.656053] [<4168cbd0>] ? rest_init+0x120/0x120
[ 1.656053] Code:
[ 1.656053] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 55 89 89 e5 e5 53 53 3e 3e 8d 8d 74 74 26 26 00 00 88 88 c3 c3 a1 a1 60 60 9d 9d b1 b1 41 41 80 80 f3 f3 0b 0b e8 e8 78 78 60 60 e9 e9 ff ff a1 a1 b4 b4 e5 e5 4c 4c 42 42 0f 0f b6 b6 d3 d3 <8b> <8b> 88 88 68 68 03 03 00 00 00 00 ff ff 51 51 08 08 5b 5b 5d 5d c3 c3 8d 8d 74 74 26 26 00 00 55 55 89 89 e5 e5 83 83 ec ec
[ 1.656053] EIP: [<41505410>]
[ 1.656053] EIP: [<41505410>] ks0108_writecontrol+0x20/0x30ks0108_writecontrol+0x20/0x30 SS:ESP 0068:40267ee8
SS:ESP 0068:40267ee8
[ 1.656053] CR2: 0000000000000368
[ 1.656053] CR2: 0000000000000368
[ 1.656053] ---[ end trace 2eb5b9886d7036ac ]---
[ 1.656053] ---[ end trace 2eb5b9886d7036ac ]---
Thanks,
Ying Huang
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