linux-kernel - [hrtimer_active] INFO: trying to register non-static key.

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Date:   Tue, 21 Nov 2017 21:01:18 +0800
From:   Fengguang Wu <fengguang.wu@...el.com>
To:     Frederic Weisbecker <frederic@...nel.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        Ingo Molnar <mingo@...nel.org>,
        Deepa Dinamani <deepa.kernel@...il.com>,
        Marc Zyngier <marc.zyngier@....com>,
        Kees Cook <keescook@...omium.org>,
        linux-kernel@...r.kernel.org, lkp@...org
Subject: [hrtimer_active] INFO: trying to register non-static key.

Hello,

FYI this happens in mainline kernel 4.14.0-12872-g020aae3.
It looks like a new regression after 4.14.

It occurs in 126 out of 945 boots.

[   33.016892] INFO: trying to register non-static key.
[   33.017745] the code is fine but needs lockdep annotation.
[   33.018798] turning off the locking correctness validator.
[   33.019713] CPU: 0 PID: 72 Comm: kworker/u4:5 Not tainted 4.14.0-12872-g020aae3 #1
[   33.020085] scsi host0: ata_piix
[   33.020729] Workqueue: events_unbound async_run_entry_fn
[   33.020729] Call Trace:
[   33.020729]  dump_stack+0x7b/0xa9:
						dump_stack at lib/dump_stack.c:55
[   33.020729]  register_lock_class+0x3bb/0x583:
						register_lock_class at kernel/locking/lockdep.c:782
[   33.020729]  ? hrtimer_active+0x92/0x99:
						hrtimer_active at kernel/time/hrtimer.c:1151
[   33.020729]  ? hrtimer_try_to_cancel+0x23/0xb6:
						hrtimer_try_to_cancel at kernel/time/hrtimer.c:1016
[   33.026718] scsi host1: ata_piix
[   33.027134] ata3: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc040 irq 14
[   33.027138] ata4: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc048 irq 15
[   33.028426] Error: Driver 'pata_platform' is already registered, aborting...
[   33.033725] Rounding down aligned max_sectors from 4294967295 to 4294967288
[   33.040417]  __lock_acquire+0x58/0x86c
[   33.048261] SSFDC read-only Flash Translation layer
[   33.048264] mtdoops: mtd device (mtddev=name/number) must be supplied
[   33.048276] device id = 2440
[   33.048280] device id = 2480
[   33.048283] device id = 24c0

Attached the full dmesg, kconfig and reproduce scripts.

Thanks,
Fengguang

View attachment "dmesg-vm-vp-quantal-x86_64-7:20171120165100:x86_64-randconfig-u0-11010248:4.14.0-12872-g020aae3:1" of type "text/plain" (36782 bytes)

View attachment ".config" of type "text/plain" (122028 bytes)

View attachment "job-script" of type "text/plain" (3890 bytes)

View attachment "reproduce-vm-vp-quantal-x86_64-7:20171120165100:x86_64-randconfig-u0-11010248:4.14.0-12872-g020aae3:1" of type "text/plain" (1807 bytes)