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 <jeykh...@cisco.com>
:::::: CC: James Bottomley <james.bottom...@suse.de>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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