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Message-ID: <CA+G9fYsiRYaE+y44ApDkvPvbDCdiJ+nnCMhiiaPVsg6p8m4+1Q@mail.gmail.com>
Date: Wed, 7 Apr 2021 22:32:26 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: linux-gpio@...r.kernel.org,
Linux-Next Mailing List <linux-next@...r.kernel.org>,
open list <linux-kernel@...r.kernel.org>,
lkft-triage@...ts.linaro.org,
"open list:KERNEL SELFTEST FRAMEWORK"
<linux-kselftest@...r.kernel.org>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>,
Arnd Bergmann <arnd@...db.de>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Colin King <colin.king@...onical.com>,
Christian Brauner <christian.brauner@...ntu.com>,
Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [next] [arm64] [gpio] BUG: key has not been registered! DEBUG_LOCKS_WARN_ON:
While running kselftest recently added gpio gpio-sim.sh test case the following
warning was triggered on Linux next tag 20210330 tag running on arm64 juno
and hikey devices.
GOOD: next-20210326
BAD: next-20210330
This is still happening today on Linux next tag 20210407.
# selftests: gpio: gpio-sim.sh
# 1. chip_name and dev_name attributes
# 1.1. Chip name is communicated to user
[ 143.081193] BUG: key ffff000800eba398 has not been registered!
[ 143.087326] ------------[ cut here ]------------
[ 143.091987] DEBUG_LOCKS_WARN_ON(1)
[ 143.092005] WARNING: CPU: 1 PID: 1821 at
/usr/src/kernel/kernel/locking/lockdep.c:4688
lockdep_init_map_type+0xf0/0x298
[ 143.106223] Modules linked in: gpio_sim rfkill tda998x cec
drm_kms_helper drm crct10dif_ce fuse [last unloaded: gpio_mockup]
[ 143.117495] CPU: 1 PID: 1821 Comm: mv Not tainted 5.12.0-rc5-next-20210330 #1
[ 143.124645] Hardware name: ARM Juno development board (r2) (DT)
[ 143.130572] pstate: 40000005 (nZcv daif -PAN -UAO -TCO BTYPE=--)
[ 143.136589] pc : lockdep_init_map_type+0xf0/0x298
[ 143.141302] lr : lockdep_init_map_type+0xf0/0x298
[ 143.146014] sp : ffff800013fb3560
[ 143.149330] x29: ffff800013fb3560 x28: 00000000ffffee4b
[ 143.154655] x27: 00000000000011b4 x26: 0000000000001000
[ 143.159979] x25: ffff000800eba380 x24: 0000000000000000
[ 143.165303] x23: 0000000000000000 x22: 0000000000000000
[ 143.170626] x21: ffff80001382b000 x20: ffff000800eba398
[ 143.175949] x19: ffff000827ac32a8 x18: ffffffffffffffff
[ 143.181273] x17: 0000000000000000 x16: 0000000000000000
[ 143.186595] x15: ffff800012900a88 x14: ffff800093fb3167
[ 143.191918] x13: ffff800013fb3175 x12: 000000000000a0ec
[ 143.197241] x11: 0000000005f5e0ff x10: ffff800013fb30c0
[ 143.202565] x9 : ffff800013fb3560 x8 : 4e5241575f534b43
[ 143.207888] x7 : ffff800012989ad8 x6 : ffff800013fb3180
[ 143.213211] x5 : 0000000000000001 x4 : 0000000000000001
[ 143.218534] x3 : ffff800012901000 x2 : 0000000000000000
[ 143.223856] x1 : b4b7acac5f71bc00 x0 : 0000000000000000
[ 143.229180] Call trace:
[ 143.231625] lockdep_init_map_type+0xf0/0x298
[ 143.235989] __kernfs_create_file+0xa8/0x1d0
[ 143.240268] sysfs_add_file_mode_ns+0xa8/0x1f8
[ 143.244718] internal_create_group+0x118/0x420
[ 143.249169] sysfs_create_group+0x2c/0x38
[ 143.253185] gpio_sim_probe+0x358/0x3c0 [gpio_sim]
[ 143.257995] platform_probe+0x6c/0xd8
[ 143.261663] really_probe+0x16c/0x508
[ 143.265332] driver_probe_device+0x104/0x178
[ 143.269610] __device_attach_driver+0xa4/0x130
[ 143.274062] bus_for_each_drv+0x78/0xd8
[ 143.277903] __device_attach+0xf0/0x178
[ 143.281745] device_initial_probe+0x24/0x30
[ 143.285935] bus_probe_device+0xa0/0xa8
[ 143.289776] device_add+0x424/0x810
[ 143.293270] platform_device_add+0x12c/0x2c0
[ 143.297545] platform_device_register_full+0x124/0x150
[ 143.302692] gpio_sim_config_commit_item+0x160/0x1e0 [gpio_sim]
[ 143.308628] configfs_rename+0x1dc/0x220
[ 143.312557] vfs_rename+0x394/0x960
[ 143.316051] do_renameat2+0x408/0x4c0
[ 143.319718] __arm64_sys_renameat+0x5c/0x70
[ 143.323908] el0_svc_common+0x7c/0x158
[ 143.327665] do_el0_svc+0x38/0x90
[ 143.330985] el0_svc+0x20/0x30
[ 143.334045] el0_sync_handler+0x8c/0xb0
[ 143.337886] el0_sync+0x13c/0x140
[ 143.341204] irq event stamp: 5607
[ 143.344520] hardirqs last enabled at (5607): [<ffff800011462dd8>]
_raw_spin_unlock_irq+0x48/0x90
[ 143.353410] hardirqs last disabled at (5606): [<ffff8000114586c4>]
__schedule+0x364/0x950
[ 143.361605] softirqs last enabled at (5602): [<ffff800010010958>]
__do_softirq+0x510/0x63c
[ 143.369971] softirqs last disabled at (5577): [<ffff8000100a7474>]
irq_exit+0x1b4/0x1c0
[ 143.377992] ---[ end trace bc3c86ef609281aa ]---
# 1.2. chip_name returns 'none' if the chip is still pending
Reported-by: Naresh Kamboju <naresh.kamboju@...aro.org>
metadata:
git branch: master
git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git describe: next-20210330
kernel-config:
http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/juno/lkft/linux-next/995/config
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20210407/testrun/4306292/suite/linux-log-parser/test/check-kernel-bug-2485709/log
Full test log link,
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20210330/testrun/4268728/suite/linux-log-parser/test/check-kernel-bug-2463256/log
git log --oneline next-20210326..next-20210330 -- tools/testing/selftests/gpio/
9d940ab72645 selftests: gpio: add test cases for gpio-sim
8a4cb2823240 selftests: gpio: add a helper for reading GPIO line names
ab1dbed6f4e8 selftests: gpio: provide a helper for reading chip info
--
Linaro LKFT
https://lkft.linaro.org
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