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Date: Sat, 22 Nov 2014 10:42:31 -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:2434 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-overlay
commit 9b84294398291359d6c8f4ac4f36c7c666c6948a
Author: Pantelis Antoniou <pantelis.antoniou@...sulko.com>
AuthorDate: Tue Oct 28 22:36:05 2014 +0200
Commit: Grant Likely <grant.likely@...aro.org>
CommitDate: Fri Nov 21 16:51:58 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>
+-----------------------------------------+------------+------------+------------+
| | 528a376eb2 | 9b84294398 | 7ddde6bcf8 |
+-----------------------------------------+------------+------------+------------+
| boot_successes | 60 | 0 | 0 |
| boot_failures | 0 | 20 | 12 |
| WARNING:at_drivers/spi/spi.c:spi_init() | 0 | 20 | 12 |
| backtrace:spi_init | 0 | 20 | 12 |
| backtrace:warn_slowpath_null | 0 | 20 | 12 |
| backtrace:kernel_init_freeable | 0 | 20 | 12 |
+-----------------------------------------+------------+------------+------------+
[ 0.157186] regulator-dummy: no parameters
[ 0.158309] NET: Registered protocol family 16
[ 0.160561] ------------[ cut here ]------------
[ 0.161315] WARNING: CPU: 0 PID: 1 at drivers/spi/spi.c:2434 spi_init+0x5c/0x81()
[ 0.162667] CPU: 0 PID: 1 Comm: swapper Not tainted 3.18.0-rc5-00044-g9b84294 #6
[ 0.167195] 00000000 00000000 51c75ef0 4160e32b 51c75f0c 4103776f 00000982 41abbd9c
[ 0.168590] 00000000 41abbd40 51e60ea0 51c75f1c 41037817 00000009 00000000 51c75f28
[ 0.170011] 41abbd9c 00000000 51c75f88 41a82c87 00000000 53ff7821 51c75f00 4104e04b
[ 0.171428] Call Trace:
[ 0.171820] [<4160e32b>] dump_stack+0x16/0x18
[ 0.172513] [<4103776f>] warn_slowpath_common+0x61/0x78
[ 0.173394] [<41abbd9c>] ? spi_init+0x5c/0x81
[ 0.174081] [<41abbd40>] ? ftrace_define_fields_spi_transfer+0x85/0x85
[ 0.175070] [<41037817>] warn_slowpath_null+0x14/0x18
[ 0.175871] [<41abbd9c>] spi_init+0x5c/0x81
[ 0.176584] [<41a82c87>] do_one_initcall+0x100/0x1aa
[ 0.177382] [<4104e04b>] ? parse_args+0x2c7/0x3e1
[ 0.178120] [<41a82435>] ? do_early_param+0x73/0x73
[ 0.178892] [<41a82e0c>] kernel_init_freeable+0xdb/0x158
[ 0.179736] [<41a82e0c>] ? kernel_init_freeable+0xdb/0x158
[ 0.180020] [<4160ab57>] kernel_init+0xd/0xb8
[ 0.180755] [<41615980>] ret_from_kernel_thread+0x20/0x30
[ 0.181634] [<4160ab4a>] ? rest_init+0xa5/0xa5
[ 0.182354] ---[ end trace d94d5f4e01dcfac4 ]---
[ 0.210073] cpuidle: using governor menu
git bisect start 7ddde6bcf8a4f0d1ed5e4aa1738ac0a190c46342 0df1f2487d2f0d04703f142813d53615d62a1da4 --
git bisect good 53a4ab96c61a34d62717b1481f6043e0b4338d74 # 17:50 20+ 0 of: Change of_device_is_available() to return bool
git bisect good 8c77e1164d2c04e401807d11c854484716c6e84f # 17:52 20+ 0 of/overlay: Add overlay unittests
git bisect good 0eec03c7fbec316b885ee158f0f57a618392cab5 # 17:56 20+ 0 fixup of_platform
git bisect good 0b90f7808351f9d0c0a2ba6cd96f4246505b592b # 17:59 20+ 0 i2c: Add OF notifier handler
git bisect good 528a376eb2db8e9b18054ab4dee952b9dfddef57 # 18:03 20+ 0 spi/of: Create new device registration method and accessors
git bisect bad 9b84294398291359d6c8f4ac4f36c7c666c6948a # 18:06 0- 20 spi/of: Add OF notifier handler
# first bad commit: [9b84294398291359d6c8f4ac4f36c7c666c6948a] spi/of: Add OF notifier handler
git bisect good 528a376eb2db8e9b18054ab4dee952b9dfddef57 # 18:09 60+ 0 spi/of: Create new device registration method and accessors
git bisect bad 7ddde6bcf8a4f0d1ed5e4aa1738ac0a190c46342 # 18:09 0- 12 HACK: Make overlay support user selectable
git bisect good 8a84e01e147f44111988f9d8ccd2eaa30215a0f2 # 18:12 60+ 0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
git bisect good ed6778aef7428a6c5fc1acf08a3e9126f5eef770 # 18:16 60+ 0 Add linux-next specific files for 20141121
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
initrd=quantal-core-i386.cgz
wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$initrd
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu Haswell,+smep,+smap
-kernel $kernel
-initrd $initrd
-m 320
-smp 2
-net nic,vlan=1,model=e1000
-net user,vlan=1
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
Thanks,
Fengguang
View attachment "dmesg-quantal-kbuild-21:20141122180322:i386-randconfig-ib0-11221632:3.18.0-rc5-00044-g9b84294:6" of type "text/plain" (47968 bytes)
View attachment "config-3.18.0-rc5-00044-g9b84294" of type "text/plain" (70892 bytes)
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