Re: [LKP] [mtd] 6b44d910ae7: WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:3547 check_flags+0xae/0x17b()

From: Frans Klaver
Date: Mon May 04 2015 - 15:15:17 EST

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In reply to: Huang Ying: "Re: [LKP] [mtd] 6b44d910ae7: WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:3547 check_flags+0xae/0x17b()"
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On Mon, May 4, 2015 at 4:37 AM, Huang Ying <ying.huang@xxxxxxxxx> wrote:
> On Tue, 2015-04-28 at 23:37 +0200, Frans Klaver wrote:
>> On Thu, Apr 16, 2015 at 01:27:14PM +0800, Huang Ying wrote:
>> > FYI, we noticed the below changes on
>> >
>> > git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
>> > commit 6b44d910ae7de5316fcf1fc828ff4a8d48cac5e2 ("mtd: core: set some defaults when dev.parent is set")
>> >
>> >
>> > [ 5.566033] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.566033] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.567490] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.567490] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.568935] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.568935] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.570362] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.570362] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.571786] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.571786] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.573195] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.573195] [nandsim] warning: read_byte: unexpected data output cycle, state is STATE_READY return 0x0
>> > [ 5.574628] nand: device found, Manufacturer ID: 0x98, Chip ID: 0x39
>> > [ 5.574628] nand: device found, Manufacturer ID: 0x98, Chip ID: 0x39
>> > [ 5.575662] nand: Toshiba NAND 128MiB 1,8V 8-bit
>> > [ 5.575662] nand: Toshiba NAND 128MiB 1,8V 8-bit
>> > [ 5.576417] nand: 128 MiB, SLC, erase size: 16 KiB, page size: 512, OOB size: 16
>> > [ 5.576417] nand: 128 MiB, SLC, erase size: 16 KiB, page size: 512, OOB size: 16
>> > [ 5.577576] flash size: 128 MiB
>> > [ 5.577576] flash size: 128 MiB
>> > [ 5.578060] page size: 512 bytes
>> > [ 5.578060] page size: 512 bytes
>> > [ 5.578556] OOB area size: 16 bytes
>> > [ 5.578556] OOB area size: 16 bytes
>> > [ 5.579085] sector size: 16 KiB
>> > [ 5.579085] sector size: 16 KiB
>> > [ 5.579568] pages number: 262144
>> > [ 5.579568] pages number: 262144
>> > [ 5.580114] pages per sector: 32
>> > [ 5.580114] pages per sector: 32
>> > [ 5.580659] bus width: 8
>> > [ 5.580659] bus width: 8
>> > [ 5.581067] bits in sector size: 14
>> > [ 5.581067] bits in sector size: 14
>> > [ 5.581605] bits in page size: 9
>> > [ 5.581605] bits in page size: 9
>> > [ 5.582102] bits in OOB size: 4
>> > [ 5.582102] bits in OOB size: 4
>> > [ 5.582593] flash size with OOB: 135168 KiB
>> > [ 5.582593] flash size with OOB: 135168 KiB
>> > [ 5.583235] page address bytes: 4
>> > [ 5.583235] page address bytes: 4
>> > [ 5.583749] sector address bytes: 3
>> > [ 5.583749] sector address bytes: 3
>> > [ 5.584332] options: 0x42
>> > [ 5.584332] options: 0x42
>> > [ 5.586063] Scanning device for bad blocks
>> > [ 5.586063] Scanning device for bad blocks
>> > [ 5.609792] ftl_cs: FTL header not found.
>> > [ 5.609792] ftl_cs: FTL header not found.
>> > [ 5.612150] Creating 1 MTD partitions on "NAND 128MiB 1,8V 8-bit":
>> > [ 5.612150] Creating 1 MTD partitions on "NAND 128MiB 1,8V 8-bit":
>> > [ 5.613131] 0x000000000000-0x000008000000 : "NAND simulator partition 0"
>> > [ 5.613131] 0x000000000000-0x000008000000 : "NAND simulator partition 0"
>> > [ 5.614496] BUG: unable to handle kernel
>> > [ 5.614496] BUG: unable to handle kernel NULL pointer dereferenceNULL pointer dereference at 00000008
>> > at 00000008
>> > [ 5.615637] IP:
>> > [ 5.615637] IP: [<818c8620>] add_mtd_device+0x194/0x313
>> > [<818c8620>] add_mtd_device+0x194/0x313
>> > [ 5.616041] *pde = 00000000
>> > [ 5.616041] *pde = 00000000
>> >
>> > [ 5.616041] Oops: 0000 [#1]
>> > [ 5.616041] Oops: 0000 [#1] DEBUG_PAGEALLOC DEBUG_PAGEALLOC
>> >
>> > [ 5.616041] CPU: 0 PID: 1 Comm: swapper Tainted: G W 4.0.0-08945-gcb973ec #3
>> > [ 5.616041] CPU: 0 PID: 1 Comm: swapper Tainted: G W 4.0.0-08945-gcb973ec #3
>> > [ 5.616041] task: 94680000 ti: 94688000 task.ti: 94688000
>> > [ 5.616041] task: 94680000 ti: 94688000 task.ti: 94688000
>> > [ 5.616041] EIP: 0060:[<818c8620>] EFLAGS: 00010202 CPU: 0
>> > [ 5.616041] EIP: 0060:[<818c8620>] EFLAGS: 00010202 CPU: 0
>> > [ 5.616041] EIP is at add_mtd_device+0x194/0x313
>> > [ 5.616041] EIP is at add_mtd_device+0x194/0x313
>> > [ 5.616041] EAX: 8bc100f0 EBX: 00000001 ECX: 00000001 EDX: 00000000
>> > [ 5.616041] EAX: 8bc100f0 EBX: 00000001 ECX: 00000001 EDX: 00000000
>> > [ 5.616041] ESI: 8caf9c20 EDI: 00000001 EBP: 94689ea8 ESP: 94689e98
>> > [ 5.616041] ESI: 8caf9c20 EDI: 00000001 EBP: 94689ea8 ESP: 94689e98
>> > [ 5.616041] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
>> > [ 5.616041] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
>> > [ 5.616041] CR0: 80050033 CR2: 00000008 CR3: 027cf000 CR4: 00040690
>> > [ 5.616041] CR0: 80050033 CR2: 00000008 CR3: 027cf000 CR4: 00040690
>> > [ 5.616041] Stack:
>> > [ 5.616041] Stack:
>> > [ 5.616041] 00000000
>> > [ 5.616041] 00000000 00000000 00000000 8caf9c20 8caf9c20 00000000 00000000 94689ecc 94689ecc 818cc564 818cc564 00cabab3 00cabab3 00000001 00000001
>> >
>> > [ 5.616041] 8bc10000
>> > [ 5.616041] 8bc10000 8c3eb820 8c3eb820 00000001 00000001 8bc10000 8bc10000 8c3eb820 8c3eb820 94689ee4 94689ee4 818c888c 818c888c 8c3eb820 8c3eb820
>> >
>> > [ 5.616041] 00000000
>> > [ 5.616041] 00000000 8bc10000 8bc10000 8bc10000 8bc10000 94689f24 94689f24 82772ced 82772ced 8bc1066c 8bc1066c 00000001 00000001 00000000 00000000
>> >
>> > [ 5.616041] Call Trace:
>> > [ 5.616041] Call Trace:
>> > [ 5.616041] [<818cc564>] add_mtd_partitions+0xc2/0xef
>> > [ 5.616041] [<818cc564>] add_mtd_partitions+0xc2/0xef
>> > [ 5.616041] [<818c888c>] mtd_device_parse_register+0xed/0x16f
>> > [ 5.616041] [<818c888c>] mtd_device_parse_register+0xed/0x16f
>> > [ 5.616041] [<82772ced>] ns_init_module+0x1384/0x13fc
>> > [ 5.616041] [<82772ced>] ns_init_module+0x1384/0x13fc
>> > [ 5.616041] [<82771969>] ? probe_docg4+0x626/0x626
>> > [ 5.616041] [<82771969>] ? probe_docg4+0x626/0x626
>> > [ 5.616041] [<8271411c>] do_one_initcall+0x128/0x278
>> > [ 5.616041] [<8271411c>] do_one_initcall+0x128/0x278
>> > [ 5.616041] [<816610d6>] ? strlen+0x9/0x1c
>> > [ 5.616041] [<816610d6>] ? strlen+0x9/0x1c
>> > [ 5.616041] [<82713500>] ? do_early_param+0x92/0xac
>> > [ 5.616041] [<82713500>] ? do_early_param+0x92/0xac
>> > [ 5.616041] [<8105f0be>] ? parse_args+0x367/0x45f
>> > [ 5.616041] [<8105f0be>] ? parse_args+0x367/0x45f
>> > [ 5.616041] [<827144e4>] kernel_init_freeable+0x278/0x33d
>> > [ 5.616041] [<827144e4>] kernel_init_freeable+0x278/0x33d
>> > [ 5.616041] [<81c98a6e>] kernel_init+0xe/0x139
>> > [ 5.616041] [<81c98a6e>] kernel_init+0xe/0x139
>> > [ 5.616041] [<81cb0240>] ret_from_kernel_thread+0x20/0x30
>> > [ 5.616041] [<81cb0240>] ret_from_kernel_thread+0x20/0x30
>> > [ 5.616041] [<81c98a60>] ? rest_init+0x131/0x131
>> > [ 5.616041] [<81c98a60>] ? rest_init+0x131/0x131
>> > [ 5.616041] Code:
>> > [ 5.616041] Code: d8 d8 74 74 62 62 82 82 84 84 c9 c9 74 74 65 65 83 83 be be ec ec 00 00 00 00 00 00 00 00 0f 0f 94 94 c1 c1 0f 0f b6 b6 f9 f9 8b 8b 14 14 bd bd c4 c4 74 74 62 62 82 82 42 42 89 89 14 14 bd bd c4 c4 74 74 62 62 82 82 84 84 c9 c9 74 74 0c 0c 8b 8b 50 50 7c 7c <8b> <8b> 52 52 08 08 89 89 96 96 ec ec 00 00 00 00 00 00 83 83 7e 7e 38 38 00 00 0f 0f 94 94 c1 c1 0f 0f b6 b6 f9 f9 8b 8b 14 14
>> >
>> > [ 5.616041] EIP: [<818c8620>]
>> > [ 5.616041] EIP: [<818c8620>] add_mtd_device+0x194/0x313add_mtd_device+0x194/0x313 SS:ESP 0068:94689e98
>> > SS:ESP 0068:94689e98
>> > [ 5.616041] CR2: 0000000000000008
>> > [ 5.616041] CR2: 0000000000000008
>> > [ 5.616041] ---[ end trace 1ca0c76386d57ae6 ]---
>> > [ 5.616041] ---[ end trace 1ca0c76386d57ae6 ]---
>> > [ 5.616041] Kernel panic - not syncing: Fatal exception
>> > [ 5.616041] Kernel panic - not syncing: Fatal exception
>> > [ 5.616041] Kernel Offset: disabled
>> > [ 5.616041] Kernel Offset: disabled
>> >
>> > Elapsed time: 10
>> > qemu-system-i386 -enable-kvm -cpu Haswell,+smep,+smap -kernel /kernel/i386-randconfig-nexs0-04131730+CONFIG_DEBUG_INFO/cb973eca7f9b50e81a5544e4e91e6bf516e10322/vmlinuz-4.0.0-08945-gcb973ec -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-vp-quantal-i386-33/rand_boot-1-quantal-core-i386.cgz-i386-randconfig-nexs0-04131730+CONFIG_DEBUG_INFO-cb973eca7f9b50e81a5544e4e91e6bf516e10322-1-20150416-99016-oo4h64.yaml ARCH=i386 kconfig=i386-randconfig-nexs0-04131730+CONFIG_DEBUG_INFO branch=next/master commit=cb973eca7f9b50e81a5544e4e91e6bf516e10322 BOOT_IMAGE=/kernel/i386-randconfig-nexs0-04131730+CONFIG_DEBUG_INFO/cb973eca7f9b50e81a5544e4e91e6bf516e10322/vmlinuz-4.0.0-08945-gcb973ec RESULT_ROOT=/result/vm-vp-quantal-i386/boot/1/quantal-core-i386.cgz/i386-randconfig-nexs0-04131730+CONFIG_DEBUG_INFO/cb973eca7f9b50e81a5544e4e91e6bf516e10322/0 LKP_SERVER=inn earlyprintk=ttyS0,115200 rd.udev.log-priority=err systemd.log_target=journal systemd.log_level=warning 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 rw ip=::::vm-vp-quantal-i386-33::dhcp drbd.minor_count=8' -initrd /fs/sdh1/initrd-vm-vp-quantal-i386-33 -m 360 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-vp-quantal-i386-33 -serial file:/dev/shm/kboot/serial-vm-vp-quantal-i386-33 -daemonize -display none -monitor null
>>
>> I can't seem to reproduce this in qemu. Is there a way to get the same
>> setup you have so I can investigate?
>
> Have you tried with the following root file system image (initrd)?
>
> quantal-core-i386.cgz in
> https://github.com/fengguang/reproduce-kernel-bug/tree/master/initrd

Hadn't found that. Reproduced it now.

Thanks,
Frans
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Next message: Jiri Olsa: "Re: [PATCH 2/4] perf tools: Add functions which can get or set perf config variables."
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In reply to: Huang Ying: "Re: [LKP] [mtd] 6b44d910ae7: WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:3547 check_flags+0xae/0x17b()"
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