linux-kernel - [tip:locking/core 46/49] drivers/scsi/fcoe/fcoe_ctlr.c:3097:1: internal compiler error: in reload_cse_simplify

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Message-ID: <201702122026.gQIlr0Ll%fengguang.wu@intel.com>
Date:   Sun, 12 Feb 2017 20:23:38 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        tipbuild@...or.com, Ingo Molnar <mingo@...nel.org>
Subject: [tip:locking/core 46/49] drivers/scsi/fcoe/fcoe_ctlr.c:3097:1:
 internal compiler error: in reload_cse_simplify_operands, at
 postreload.c:396

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core
head:   bc88c10d7e6900916f5e1ba3829d66a9de92b633
commit: 10383aea2f445bce9b2a2b308def08134b438c8e [46/49] kref: Implement 'struct kref' using refcount_t
config: openrisc-allmodconfig (attached as .config)
compiler: or32-linux-gcc (GCC) 4.5.1-or32-1.0rc1
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 10383aea2f445bce9b2a2b308def08134b438c8e
        # save the attached .config to linux build tree
        make.cross ARCH=openrisc 

All errors (new ones prefixed by >>):

   drivers/scsi/fcoe/fcoe_ctlr.c: In function 'fcoe_ctlr_vn_disc':
   drivers/scsi/fcoe/fcoe_ctlr.c:3097:1: error: insn does not satisfy its constraints:
   (call_insn/j 178 177 179 28 drivers/scsi/fcoe/fcoe_ctlr.c:3096 (parallel [
               (call (mem:SI (mem/c:SI (reg/f:SI 1 r1) [0 %sfp+-20 S4 A32]) [0 S4 A32])
                   (const_int 0 [0x0]))
               (use (reg:SI 9 r9))
           ]) 5 {sibcall_internal} (nil)
       (expr_list:REG_DEP_TRUE (use (reg:SI 4 r4))
           (expr_list:REG_DEP_TRUE (use (reg:SI 3 r3))
               (nil))))
>> drivers/scsi/fcoe/fcoe_ctlr.c:3097:1: internal compiler error: in reload_cse_simplify_operands, at postreload.c:396
   Please submit a full bug report,
   with preprocessed source if appropriate.
   See <http://gcc.gnu.org/bugs.html> for instructions.

vim +3097 drivers/scsi/fcoe/fcoe_ctlr.c

e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3081  	mutex_lock(&disc->disc_mutex);
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3082  	callback = disc->pending ? disc->disc_callback : NULL;
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3083  	disc->pending = 0;
a407c593 drivers/scsi/fcoe/fcoe_ctlr.c Hannes Reinecke 2016-09-30  3084  	mutex_unlock(&disc->disc_mutex);
a407c593 drivers/scsi/fcoe/fcoe_ctlr.c Hannes Reinecke 2016-09-30  3085  	rcu_read_lock();
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3086  	list_for_each_entry_rcu(rdata, &disc->rports, peers) {
a407c593 drivers/scsi/fcoe/fcoe_ctlr.c Hannes Reinecke 2016-09-30  3087  		if (!kref_get_unless_zero(&rdata->kref))
a407c593 drivers/scsi/fcoe/fcoe_ctlr.c Hannes Reinecke 2016-09-30  3088  			continue;
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3089  		frport = fcoe_ctlr_rport(rdata);
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3090  		if (frport->time)
05d7d3b0 drivers/scsi/fcoe/fcoe_ctlr.c Hannes Reinecke 2016-10-18  3091  			fc_rport_login(rdata);
944ef968 drivers/scsi/fcoe/fcoe_ctlr.c Hannes Reinecke 2016-10-18  3092  		kref_put(&rdata->kref, fc_rport_destroy);
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3093  	}
a407c593 drivers/scsi/fcoe/fcoe_ctlr.c Hannes Reinecke 2016-09-30  3094  	rcu_read_unlock();
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3095  	if (callback)
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3096  		callback(lport, DISC_EV_SUCCESS);
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20 @3097  }
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3098  
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3099  /**
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3100   * fcoe_ctlr_vn_timeout - timer work function for VN2VN mode.
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3101   * @fip: The FCoE controller
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3102   */
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3103  static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3104  {
e10f8c66 drivers/scsi/fcoe/libfcoe.c   Joe Eykholt     2010-07-20  3105  	unsigned long next_time;

:::::: The code at line 3097 was first introduced by commit
:::::: e10f8c667b874a57512c936089092a3d1ef7ab8a [SCSI] libfcoe: fcoe: fnic: add FIP VN2VN point-to-multipoint support

:::::: TO: Joe Eykholt <jeykholt@...co.com>
:::::: CC: James Bottomley <James.Bottomley@...e.de>

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