From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============6851673479329708086==" MIME-Version: 1.0 From: Matt Fleming To: lkp@lists.01.org Subject: Re: [sched/core] cb42c9a3eb WARNING: CPU: 0 PID: 40 at kernel/sched/sched.h:804 rq_clock_task Date: Mon, 20 Feb 2017 22:21:33 +0000 Message-ID: <20170220222133.GP28416@codeblueprint.co.uk> In-Reply-To: <20170220015619.gnb6apcw3ahgw3rr@wfg-t540p.sh.intel.com> List-Id: --===============6851673479329708086== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On Mon, 20 Feb, at 09:56:19AM, Fengguang Wu wrote: > = > [ 83.791548] ------------[ cut here ]------------ > [ 83.793245] WARNING: CPU: 0 PID: 40 at kernel/sched/sched.h:804 rq_clo= ck_task+0x126/0x290 > [ 83.796441] rq->clock_update_flags < RQCF_ACT_SKIP > [ 83.796454] CPU: 0 PID: 40 Comm: torture_shuffle Not tainted 4.10.0-rc= 3-00256-gcb42c9a #3 > [ 83.800931] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIO= S 1.9.3-20161025_171302-gandalf 04/01/2014 > [ 83.815146] Call Trace: > [ 83.816232] dump_stack+0x2c6/0x39a > [ 83.817461] __warn+0x23d/0x280 > [ 83.818643] ? rq_clock_task+0x126/0x290 > [ 83.819947] ? rq_clock_task+0x126/0x290 > [ 83.821244] warn_slowpath_fmt+0x57/0x70 > [ 83.831558] rq_clock_task+0x126/0x290 > [ 83.832837] set_next_entity+0x90/0xc0 > [ 83.834107] set_curr_task_fair+0x48/0x60 > [ 83.835414] do_set_cpus_allowed+0x26f/0x470 > [ 83.836768] __set_cpus_allowed_ptr+0x1e8/0x510 > [ 83.838161] set_cpus_allowed_ptr+0x1d/0x30 > [ 83.839498] torture_shuffle+0x21b/0x610 > [ 83.858854] kthread+0x224/0x240 > [ 83.860043] ? torture_shutdown+0x620/0x620 > [ 83.861375] ? __kthread_bind_mask+0xf0/0xf0 > [ 83.862748] ret_from_fork+0x19/0x30 > [ 83.864065] ---[ end trace 6227f0c8323ad65a ]--- > [ 86.016087] ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 11 Urgh, yeah. This is similar to the one that Peter fixed in commit 1b1d62254df0f ("sched/core: Add missing update_rq_clock() call in = sched_move_task()") I'll take a closer look at submitting a fix in the morning. --===============6851673479329708086==--