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Date: Fri, 28 Nov 2014 02:07:37 -0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Pantelis Antoniou <pantelis.antoniou@...sulko.com>
Cc: Grant Likely <grant.likely@...aro.org>, LKP <lkp@...org>,
linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [spi/of] WARNING: CPU: 0 PID: 1 at drivers/spi/spi.c:2419 spi_init()
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux devicetree/next
commit ce79d54ae447d65117303ca9f61ffe9dcbc2465d
Author: Pantelis Antoniou <pantelis.antoniou@...sulko.com>
AuthorDate: Tue Oct 28 22:36:05 2014 +0200
Commit: Grant Likely <grant.likely@...aro.org>
CommitDate: Tue Nov 25 15:36:24 2014 +0000
spi/of: Add OF notifier handler
Add OF notifier handler needed for creating/destroying spi devices
according to dynamic runtime changes in the DT live tree. This code is
enabled when CONFIG_OF_DYNAMIC is selected.
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@...sulko.com>
Signed-off-by: Grant Likely <grant.likely@...aro.org>
Reviewed-by: Mark Brown <broonie@...nel.org>
Cc: <linux-spi@...r.kernel.org>
+------------------------------------------+------------+------------+------------+
| | aff5e3f89a | ce79d54ae4 | 394b0904b6 |
+------------------------------------------+------------+------------+------------+
| boot_successes | 60 | 0 | 0 |
| boot_failures | 0 | 20 | 14 |
| WARNING:at_drivers/spi/spi.c:#spi_init() | 0 | 20 | 14 |
| backtrace:spi_init | 0 | 20 | 14 |
| backtrace:warn_slowpath_null | 0 | 20 | 14 |
| backtrace:kernel_init_freeable | 0 | 20 | 14 |
| page_allocation_failure:order:#,mode | 0 | 1 | |
| backtrace:vmalloc | 0 | 1 | |
| backtrace:SyS_init_module | 0 | 1 | |
+------------------------------------------+------------+------------+------------+
[ 0.083682] regulator-dummy: no parameters
[ 0.084524] NET: Registered protocol family 16
[ 0.085741] ------------[ cut here ]------------
[ 0.086403] WARNING: CPU: 0 PID: 1 at drivers/spi/spi.c:2419 spi_init+0xa9/0xd0()
[ 0.087647] Modules linked in:
[ 0.088216] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.18.0-rc6-00033-gce79d54 #113
[ 0.089562] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 0.090014] 00000001 00000000 00000001 d342bef0 c176d4b3 00000000 00000000 c1c165ed
[ 0.091632] d342bf0c c1057020 00000973 c1fcb187 00000000 d34029d0 c1cae680 d342bf1c
[ 0.093223] c105709b 00000009 00000000 d342bf28 c1fcb187 00000000 d342bf8c c10004e5
[ 0.094826] Call Trace:
[ 0.095277] [<c176d4b3>] dump_stack+0x78/0xa8
[ 0.095931] [<c1057020>] warn_slowpath_common+0x7e/0x95
[ 0.096663] [<c1fcb187>] ? spi_init+0xa9/0xd0
[ 0.097307] [<c105709b>] warn_slowpath_null+0xf/0x13
[ 0.098019] [<c1fcb187>] spi_init+0xa9/0xd0
[ 0.098656] [<c10004e5>] do_one_initcall+0x132/0x218
[ 0.099365] [<c1fcb0de>] ? ftrace_define_fields_spi_master+0x35/0x35
[ 0.100008] [<c1f7b500>] ? initcall_blacklist+0x2a/0x96
[ 0.100744] [<c1076520>] ? parse_args+0x334/0x3f6
[ 0.101435] [<c1f7bf61>] kernel_init_freeable+0x19a/0x25c
[ 0.102185] [<c1769ba4>] kernel_init+0x9/0x13c
[ 0.102837] [<c1777401>] ret_from_kernel_thread+0x21/0x30
[ 0.103587] [<c1769b9b>] ? rest_init+0xa5/0xa5
[ 0.104245] ---[ end trace e27f70e68b83202c ]---
[ 0.105000] EISA bus registered
git bisect start 394b0904b6b812bf7c3cb75bc81e910e58b0d44a 5d01410fe4d92081f349b013a2e7a95429e4f2c9 --
git bisect bad b119a9cf315b27f39a7af0869c508e30cc2bc438 # 06:15 0- 12 Merge 'cdall-kvm-arm/vcpu_init_fixes' into devel-lkp-ib03-smoke-201411280554
git bisect bad 7959073eeb45f3c359f9af7e906d495258ddc579 # 06:20 0- 20 Merge 'glikely/devicetree/next' into devel-lkp-ib03-smoke-201411280554
git bisect good a33e66ee6a821d4b9a0ed82f72439ec807ac8051 # 06:27 20+ 0 0day base guard for 'devel-lkp-ib03-smoke-201411280554'
git bisect good 2d0747c4b68be8eb8ccfa2c538f2f5dd2ea89094 # 06:33 20+ 0 of: Properly set the OF_POPULATED_BUS flag on root node
git bisect good 801d728c10db4b28e01590b46bf1f0df930760cc # 06:38 20+ 0 of/reconfig: Add OF_DYNAMIC notifier for platform_bus_type
git bisect good aff5e3f89a0b07e7edf9243f913378cc27e4110d # 06:42 20+ 0 spi/of: Create new device registration method and accessors
git bisect bad 65d473b8007b4ef9f2a5e52f39c52d2141dfd421 # 06:47 0- 20 of: remove select of non-existant OF_DEVICE config symbol
git bisect bad ce79d54ae447d65117303ca9f61ffe9dcbc2465d # 06:53 0- 20 spi/of: Add OF notifier handler
# first bad commit: [ce79d54ae447d65117303ca9f61ffe9dcbc2465d] spi/of: Add OF notifier handler
git bisect good aff5e3f89a0b07e7edf9243f913378cc27e4110d # 06:55 60+ 0 spi/of: Create new device registration method and accessors
# extra tests on HEAD of linux-devel/devel-lkp-ib03-smoke-201411280554
git bisect bad 394b0904b6b812bf7c3cb75bc81e910e58b0d44a # 06:55 0- 14 0day head guard for 'devel-lkp-ib03-smoke-201411280554'
# extra tests on tree/branch glikely/devicetree/next
git bisect bad a81a6c654bbe129af529d11b4763367af90d1152 # 07:01 0- 4 ARM: dt: fix up PL011 device tree bindings
# extra tests on tree/branch linus/master
git bisect good 3314bf6ba2ac8f1a2dd0d55a980835a258f1a45d # 08:10 60+ 0 Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
# extra tests on tree/branch next/master
git bisect bad 3bcf494d225fd193d02e8cb2e2c3fe3cc476ff3f # 08:11 0- 12 Add linux-next specific files for 20141127
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
initrd=yocto-minimal-i386.cgz
wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$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-vp-31:20141128065312:i386-randconfig-ib0-11280546:3.18.0-rc6-00033-gce79d54:113" of type "text/plain" (53857 bytes)
View attachment "config-3.18.0-rc6-00033-gce79d54" of type "text/plain" (98331 bytes)
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