CC: [email protected]
CC: [email protected]
TO: Michel Lespinasse <[email protected]>
CC: Andrew Morton <[email protected]>
CC: Linux Memory Management List <[email protected]>
CC: Vlastimil Babka <[email protected]>
CC: Davidlohr Bueso <[email protected]>
CC: Daniel Jordan <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   f5e6c330254ae691f6d7befe61c786eb5056007e
commit: da1c55f1b272f4bd54671d459b39ea7b54944ef9 mmap locking API: rename 
mmap_sem to mmap_lock
date:   7 months ago
:::::: branch date: 22 hours ago
:::::: commit date: 7 months ago
config: mips-randconfig-m031-20210108 (attached as .config)
compiler: mipsel-linux-gcc (GCC) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>
Reported-by: Dan Carpenter <[email protected]>

smatch warnings:
arch/mips/mm/fault.c:327 __do_page_fault() warn: inconsistent returns 
'mm->mmap_lock'.

vim +327 arch/mips/mm/fault.c

^1da177e4c3f415 Linus Torvalds     2005-04-16   89  
^1da177e4c3f415 Linus Torvalds     2005-04-16   90      /*
^1da177e4c3f415 Linus Torvalds     2005-04-16   91       * If we're in an 
interrupt or have no user
^1da177e4c3f415 Linus Torvalds     2005-04-16   92       * context, we must not 
take the fault..
^1da177e4c3f415 Linus Torvalds     2005-04-16   93       */
70ffdb9393a7264 David Hildenbrand  2015-05-11   94      if 
(faulthandler_disabled() || !mm)
^1da177e4c3f415 Linus Torvalds     2005-04-16   95              goto 
bad_area_nosemaphore;
^1da177e4c3f415 Linus Torvalds     2005-04-16   96  
759496ba6407c69 Johannes Weiner    2013-09-12   97      if (user_mode(regs))
759496ba6407c69 Johannes Weiner    2013-09-12   98              flags |= 
FAULT_FLAG_USER;
43ca4957a15a120 Kautuk Consul      2011-12-23   99  retry:
89154dd5313f774 Michel Lespinasse  2020-06-08  100      mmap_read_lock(mm);
^1da177e4c3f415 Linus Torvalds     2005-04-16  101      vma = find_vma(mm, 
address);
^1da177e4c3f415 Linus Torvalds     2005-04-16  102      if (!vma)
^1da177e4c3f415 Linus Torvalds     2005-04-16  103              goto bad_area;
^1da177e4c3f415 Linus Torvalds     2005-04-16  104      if (vma->vm_start <= 
address)
^1da177e4c3f415 Linus Torvalds     2005-04-16  105              goto good_area;
^1da177e4c3f415 Linus Torvalds     2005-04-16  106      if (!(vma->vm_flags & 
VM_GROWSDOWN))
^1da177e4c3f415 Linus Torvalds     2005-04-16  107              goto bad_area;
^1da177e4c3f415 Linus Torvalds     2005-04-16  108      if (expand_stack(vma, 
address))
^1da177e4c3f415 Linus Torvalds     2005-04-16  109              goto bad_area;
^1da177e4c3f415 Linus Torvalds     2005-04-16  110  /*
^1da177e4c3f415 Linus Torvalds     2005-04-16  111   * Ok, we have a good 
vm_area for this memory access, so
^1da177e4c3f415 Linus Torvalds     2005-04-16  112   * we can handle it..
^1da177e4c3f415 Linus Torvalds     2005-04-16  113   */
^1da177e4c3f415 Linus Torvalds     2005-04-16  114  good_area:
f43a54a0d9168de Eric W. Biederman  2018-04-15  115      si_code = SEGV_ACCERR;
^1da177e4c3f415 Linus Torvalds     2005-04-16  116  
^1da177e4c3f415 Linus Torvalds     2005-04-16  117      if (write) {
^1da177e4c3f415 Linus Torvalds     2005-04-16  118              if 
(!(vma->vm_flags & VM_WRITE))
^1da177e4c3f415 Linus Torvalds     2005-04-16  119                      goto 
bad_area;
759496ba6407c69 Johannes Weiner    2013-09-12  120              flags |= 
FAULT_FLAG_WRITE;
6dd9344cfc41bcc David Daney        2010-02-10  121      } else {
05857c64ecf8972 Steven J. Hill     2012-09-13  122              if 
(cpu_has_rixi) {
6dd9344cfc41bcc David Daney        2010-02-10  123                      if 
(address == regs->cp0_epc && !(vma->vm_flags & VM_EXEC)) {
6dd9344cfc41bcc David Daney        2010-02-10  124  #if 0
6dd9344cfc41bcc David Daney        2010-02-10  125                              
pr_notice("Cpu%d[%s:%d:%0*lx:%ld:%0*lx] XI violation\n",
6dd9344cfc41bcc David Daney        2010-02-10  126                              
          raw_smp_processor_id(),
6dd9344cfc41bcc David Daney        2010-02-10  127                              
          current->comm, current->pid,
6dd9344cfc41bcc David Daney        2010-02-10  128                              
          field, address, write,
6dd9344cfc41bcc David Daney        2010-02-10  129                              
          field, regs->cp0_epc);
6dd9344cfc41bcc David Daney        2010-02-10  130  #endif
6dd9344cfc41bcc David Daney        2010-02-10  131                              
goto bad_area;
6dd9344cfc41bcc David Daney        2010-02-10  132                      }
e070dab73523bcb Ralf Baechle       2015-07-23  133                      if 
(!(vma->vm_flags & VM_READ) &&
e070dab73523bcb Ralf Baechle       2015-07-23  134                          
exception_epc(regs) != address) {
6dd9344cfc41bcc David Daney        2010-02-10  135  #if 0
6dd9344cfc41bcc David Daney        2010-02-10  136                              
pr_notice("Cpu%d[%s:%d:%0*lx:%ld:%0*lx] RI violation\n",
6dd9344cfc41bcc David Daney        2010-02-10  137                              
          raw_smp_processor_id(),
6dd9344cfc41bcc David Daney        2010-02-10  138                              
          current->comm, current->pid,
6dd9344cfc41bcc David Daney        2010-02-10  139                              
          field, address, write,
6dd9344cfc41bcc David Daney        2010-02-10  140                              
          field, regs->cp0_epc);
6dd9344cfc41bcc David Daney        2010-02-10  141  #endif
6dd9344cfc41bcc David Daney        2010-02-10  142                              
goto bad_area;
6dd9344cfc41bcc David Daney        2010-02-10  143                      }
^1da177e4c3f415 Linus Torvalds     2005-04-16  144              } else {
5093c5872be3a04 Anshuman Khandual  2020-04-06  145                      if 
(unlikely(!vma_is_accessible(vma)))
^1da177e4c3f415 Linus Torvalds     2005-04-16  146                              
goto bad_area;
^1da177e4c3f415 Linus Torvalds     2005-04-16  147              }
6dd9344cfc41bcc David Daney        2010-02-10  148      }
^1da177e4c3f415 Linus Torvalds     2005-04-16  149  
^1da177e4c3f415 Linus Torvalds     2005-04-16  150      /*
^1da177e4c3f415 Linus Torvalds     2005-04-16  151       * If for any reason at 
all we couldn't handle the fault,
^1da177e4c3f415 Linus Torvalds     2005-04-16  152       * make sure we exit 
gracefully rather than endlessly redo
^1da177e4c3f415 Linus Torvalds     2005-04-16  153       * the fault.
^1da177e4c3f415 Linus Torvalds     2005-04-16  154       */
dcddffd41d3f1d3 Kirill A. Shutemov 2016-07-26  155      fault = 
handle_mm_fault(vma, address, flags);
43ca4957a15a120 Kautuk Consul      2011-12-23  156  
4ef873226ceb9c7 Peter Xu           2020-04-01  157      if 
(fault_signal_pending(fault, regs))
43ca4957a15a120 Kautuk Consul      2011-12-23  158              return;
43ca4957a15a120 Kautuk Consul      2011-12-23  159  
a8b0ca17b80e92f Peter Zijlstra     2011-06-27  160      
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
83c54070ee1a2d0 Nick Piggin        2007-07-19  161      if (unlikely(fault & 
VM_FAULT_ERROR)) {
83c54070ee1a2d0 Nick Piggin        2007-07-19  162              if (fault & 
VM_FAULT_OOM)
^1da177e4c3f415 Linus Torvalds     2005-04-16  163                      goto 
out_of_memory;
33692f27597fcab Linus Torvalds     2015-01-29  164              else if (fault 
& VM_FAULT_SIGSEGV)
33692f27597fcab Linus Torvalds     2015-01-29  165                      goto 
bad_area;
83c54070ee1a2d0 Nick Piggin        2007-07-19  166              else if (fault 
& VM_FAULT_SIGBUS)
83c54070ee1a2d0 Nick Piggin        2007-07-19  167                      goto 
do_sigbus;
^1da177e4c3f415 Linus Torvalds     2005-04-16  168              BUG();
^1da177e4c3f415 Linus Torvalds     2005-04-16  169      }
43ca4957a15a120 Kautuk Consul      2011-12-23  170      if (flags & 
FAULT_FLAG_ALLOW_RETRY) {
7f788d2d5308581 Dengcheng Zhu      2010-10-12  171              if (fault & 
VM_FAULT_MAJOR) {
43ca4957a15a120 Kautuk Consul      2011-12-23  172                      
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,
43ca4957a15a120 Kautuk Consul      2011-12-23  173                              
                  regs, address);
83c54070ee1a2d0 Nick Piggin        2007-07-19  174                      
tsk->maj_flt++;
7f788d2d5308581 Dengcheng Zhu      2010-10-12  175              } else {
43ca4957a15a120 Kautuk Consul      2011-12-23  176                      
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1,
43ca4957a15a120 Kautuk Consul      2011-12-23  177                              
                  regs, address);
83c54070ee1a2d0 Nick Piggin        2007-07-19  178                      
tsk->min_flt++;
7f788d2d5308581 Dengcheng Zhu      2010-10-12  179              }
43ca4957a15a120 Kautuk Consul      2011-12-23  180              if (fault & 
VM_FAULT_RETRY) {
45cac65b0fcd287 Shaohua Li         2012-10-08  181                      flags 
|= FAULT_FLAG_TRIED;
43ca4957a15a120 Kautuk Consul      2011-12-23  182  
43ca4957a15a120 Kautuk Consul      2011-12-23  183                      /*
43ca4957a15a120 Kautuk Consul      2011-12-23  184                       * No 
need to up_read(&mm->mmap_sem) as we would
43ca4957a15a120 Kautuk Consul      2011-12-23  185                       * have 
already released it in __lock_page_or_retry
43ca4957a15a120 Kautuk Consul      2011-12-23  186                       * in 
mm/filemap.c.
43ca4957a15a120 Kautuk Consul      2011-12-23  187                       */
43ca4957a15a120 Kautuk Consul      2011-12-23  188  
43ca4957a15a120 Kautuk Consul      2011-12-23  189                      goto 
retry;
43ca4957a15a120 Kautuk Consul      2011-12-23  190              }
43ca4957a15a120 Kautuk Consul      2011-12-23  191      }
^1da177e4c3f415 Linus Torvalds     2005-04-16  192  
89154dd5313f774 Michel Lespinasse  2020-06-08  193      mmap_read_unlock(mm);
^1da177e4c3f415 Linus Torvalds     2005-04-16  194      return;
^1da177e4c3f415 Linus Torvalds     2005-04-16  195  
^1da177e4c3f415 Linus Torvalds     2005-04-16  196  /*
^1da177e4c3f415 Linus Torvalds     2005-04-16  197   * Something tried to 
access memory that isn't in our memory map..
^1da177e4c3f415 Linus Torvalds     2005-04-16  198   * Fix it, but check if 
it's kernel or user first..
^1da177e4c3f415 Linus Torvalds     2005-04-16  199   */
^1da177e4c3f415 Linus Torvalds     2005-04-16  200  bad_area:
89154dd5313f774 Michel Lespinasse  2020-06-08  201      mmap_read_unlock(mm);
^1da177e4c3f415 Linus Torvalds     2005-04-16  202  
^1da177e4c3f415 Linus Torvalds     2005-04-16  203  bad_area_nosemaphore:
^1da177e4c3f415 Linus Torvalds     2005-04-16  204      /* User mode accesses 
just cause a SIGSEGV */
^1da177e4c3f415 Linus Torvalds     2005-04-16  205      if (user_mode(regs)) {
^1da177e4c3f415 Linus Torvalds     2005-04-16  206              
tsk->thread.cp0_badvaddr = address;
^1da177e4c3f415 Linus Torvalds     2005-04-16  207              
tsk->thread.error_code = write;
d79d853df126553 Markos Chandras    2015-01-21  208              if 
(show_unhandled_signals &&
d79d853df126553 Markos Chandras    2015-01-21  209                  
unhandled_signal(tsk, SIGSEGV) &&
d79d853df126553 Markos Chandras    2015-01-21  210                  
__ratelimit(&ratelimit_state)) {
2a872a5dcec7052 Matt Redfearn      2016-11-09  211                      
pr_info("do_page_fault(): sending SIGSEGV to %s for invalid %s %0*lx\n",
^1da177e4c3f415 Linus Torvalds     2005-04-16  212                              
tsk->comm,
^1da177e4c3f415 Linus Torvalds     2005-04-16  213                              
write ? "write access to" : "read access from",
d79d853df126553 Markos Chandras    2015-01-21  214                              
field, address);
d79d853df126553 Markos Chandras    2015-01-21  215                      
pr_info("epc = %0*lx in", field,
d79d853df126553 Markos Chandras    2015-01-21  216                              
(unsigned long) regs->cp0_epc);
2a872a5dcec7052 Matt Redfearn      2016-11-09  217                      
print_vma_addr(KERN_CONT " ", regs->cp0_epc);
2a872a5dcec7052 Matt Redfearn      2016-11-09  218                      
pr_cont("\n");
d79d853df126553 Markos Chandras    2015-01-21  219                      
pr_info("ra  = %0*lx in", field,
d79d853df126553 Markos Chandras    2015-01-21  220                              
(unsigned long) regs->regs[31]);
2a872a5dcec7052 Matt Redfearn      2016-11-09  221                      
print_vma_addr(KERN_CONT " ", regs->regs[31]);
2a872a5dcec7052 Matt Redfearn      2016-11-09  222                      
pr_cont("\n");
d79d853df126553 Markos Chandras    2015-01-21  223              }
e3b28831c18c6c9 Ralf Baechle       2015-07-28  224              
current->thread.trap_nr = (regs->cp0_cause >> 2) & 0x1f;
2e1661d2673667d Eric W. Biederman  2019-05-23  225              
force_sig_fault(SIGSEGV, si_code, (void __user *)address);
^1da177e4c3f415 Linus Torvalds     2005-04-16  226              return;
^1da177e4c3f415 Linus Torvalds     2005-04-16  227      }
^1da177e4c3f415 Linus Torvalds     2005-04-16  228  
^1da177e4c3f415 Linus Torvalds     2005-04-16  229  no_context:
^1da177e4c3f415 Linus Torvalds     2005-04-16  230      /* Are we prepared to 
handle this kernel fault?  */
^1da177e4c3f415 Linus Torvalds     2005-04-16  231      if 
(fixup_exception(regs)) {
^1da177e4c3f415 Linus Torvalds     2005-04-16  232              
current->thread.cp0_baduaddr = address;
^1da177e4c3f415 Linus Torvalds     2005-04-16  233              return;
^1da177e4c3f415 Linus Torvalds     2005-04-16  234      }
^1da177e4c3f415 Linus Torvalds     2005-04-16  235  
^1da177e4c3f415 Linus Torvalds     2005-04-16  236      /*
^1da177e4c3f415 Linus Torvalds     2005-04-16  237       * Oops. The kernel 
tried to access some bad page. We'll have to
^1da177e4c3f415 Linus Torvalds     2005-04-16  238       * terminate things 
with extreme prejudice.
^1da177e4c3f415 Linus Torvalds     2005-04-16  239       */
^1da177e4c3f415 Linus Torvalds     2005-04-16  240      bust_spinlocks(1);
^1da177e4c3f415 Linus Torvalds     2005-04-16  241  
^1da177e4c3f415 Linus Torvalds     2005-04-16  242      printk(KERN_ALERT "CPU 
%d Unable to handle kernel paging request at "
^1da177e4c3f415 Linus Torvalds     2005-04-16  243             "virtual address 
%0*lx, epc == %0*lx, ra == %0*lx\n",
d6f703602fee8f8 Ralf Baechle       2007-03-29  244             
raw_smp_processor_id(), field, address, field, regs->cp0_epc,
^1da177e4c3f415 Linus Torvalds     2005-04-16  245             field,  
regs->regs[31]);
^1da177e4c3f415 Linus Torvalds     2005-04-16  246      die("Oops", regs);
^1da177e4c3f415 Linus Torvalds     2005-04-16  247  
c7c1e3846bac1e4 Ralf Baechle       2009-01-12  248  out_of_memory:
^1da177e4c3f415 Linus Torvalds     2005-04-16  249      /*
c7c1e3846bac1e4 Ralf Baechle       2009-01-12  250       * We ran out of 
memory, call the OOM killer, and return the userspace
c7c1e3846bac1e4 Ralf Baechle       2009-01-12  251       * (which will retry 
the fault, or kill us if we got oom-killed).
^1da177e4c3f415 Linus Torvalds     2005-04-16  252       */
89154dd5313f774 Michel Lespinasse  2020-06-08  253      mmap_read_unlock(mm);
871341023c771ad Johannes Weiner    2013-09-12  254      if (!user_mode(regs))
871341023c771ad Johannes Weiner    2013-09-12  255              goto no_context;
c7c1e3846bac1e4 Ralf Baechle       2009-01-12  256      
pagefault_out_of_memory();
c7c1e3846bac1e4 Ralf Baechle       2009-01-12  257      return;
^1da177e4c3f415 Linus Torvalds     2005-04-16  258  
^1da177e4c3f415 Linus Torvalds     2005-04-16  259  do_sigbus:
89154dd5313f774 Michel Lespinasse  2020-06-08  260      mmap_read_unlock(mm);
^1da177e4c3f415 Linus Torvalds     2005-04-16  261  
^1da177e4c3f415 Linus Torvalds     2005-04-16  262      /* Kernel mode? Handle 
exceptions or die */
^1da177e4c3f415 Linus Torvalds     2005-04-16  263      if (!user_mode(regs))
^1da177e4c3f415 Linus Torvalds     2005-04-16  264              goto no_context;
72f941af88a543e Paul Burton        2017-03-30  265  
^1da177e4c3f415 Linus Torvalds     2005-04-16  266      /*
^1da177e4c3f415 Linus Torvalds     2005-04-16  267       * Send a sigbus, 
regardless of whether we were in kernel
^1da177e4c3f415 Linus Torvalds     2005-04-16  268       * or user mode.
^1da177e4c3f415 Linus Torvalds     2005-04-16  269       */
41c594ab65fc895 Ralf Baechle       2006-04-05  270  #if 0
41c594ab65fc895 Ralf Baechle       2006-04-05  271      printk("do_page_fault() 
#3: sending SIGBUS to %s for "
41c594ab65fc895 Ralf Baechle       2006-04-05  272             "invalid 
%s\n%0*lx (epc == %0*lx, ra == %0*lx)\n",
41c594ab65fc895 Ralf Baechle       2006-04-05  273             tsk->comm,
41c594ab65fc895 Ralf Baechle       2006-04-05  274             write ? "write 
access to" : "read access from",
41c594ab65fc895 Ralf Baechle       2006-04-05  275             field, address,
41c594ab65fc895 Ralf Baechle       2006-04-05  276             field, (unsigned 
long) regs->cp0_epc,
41c594ab65fc895 Ralf Baechle       2006-04-05  277             field, (unsigned 
long) regs->regs[31]);
41c594ab65fc895 Ralf Baechle       2006-04-05  278  #endif
e3b28831c18c6c9 Ralf Baechle       2015-07-28  279      current->thread.trap_nr 
= (regs->cp0_cause >> 2) & 0x1f;
^1da177e4c3f415 Linus Torvalds     2005-04-16  280      
tsk->thread.cp0_badvaddr = address;
2e1661d2673667d Eric W. Biederman  2019-05-23  281      force_sig_fault(SIGBUS, 
BUS_ADRERR, (void __user *)address);
^1da177e4c3f415 Linus Torvalds     2005-04-16  282  
^1da177e4c3f415 Linus Torvalds     2005-04-16  283      return;
2ca2ebfd952d033 David Daney        2009-09-02  284  #ifndef CONFIG_64BIT
^1da177e4c3f415 Linus Torvalds     2005-04-16  285  vmalloc_fault:
^1da177e4c3f415 Linus Torvalds     2005-04-16  286      {
^1da177e4c3f415 Linus Torvalds     2005-04-16  287              /*
^1da177e4c3f415 Linus Torvalds     2005-04-16  288               * Synchronize 
this task's top level page-table
^1da177e4c3f415 Linus Torvalds     2005-04-16  289               * with the 
'reference' page table.
^1da177e4c3f415 Linus Torvalds     2005-04-16  290               *
^1da177e4c3f415 Linus Torvalds     2005-04-16  291               * Do _not_ use 
"tsk" here. We might be inside
^1da177e4c3f415 Linus Torvalds     2005-04-16  292               * an interrupt 
in the middle of a task switch..
^1da177e4c3f415 Linus Torvalds     2005-04-16  293               */
31168f033e3751d Mike Rapoport      2019-11-21  294              int offset = 
pgd_index(address);
^1da177e4c3f415 Linus Torvalds     2005-04-16  295              pgd_t *pgd, 
*pgd_k;
2bee1b58484f036 Mike Rapoport      2019-11-21  296              p4d_t *p4d, 
*p4d_k;
c6e8b587718c486 Ralf Baechle       2005-02-10  297              pud_t *pud, 
*pud_k;
^1da177e4c3f415 Linus Torvalds     2005-04-16  298              pmd_t *pmd, 
*pmd_k;
^1da177e4c3f415 Linus Torvalds     2005-04-16  299              pte_t *pte_k;
^1da177e4c3f415 Linus Torvalds     2005-04-16  300  
d6f703602fee8f8 Ralf Baechle       2007-03-29  301              pgd = (pgd_t *) 
pgd_current[raw_smp_processor_id()] + offset;
^1da177e4c3f415 Linus Torvalds     2005-04-16  302              pgd_k = 
init_mm.pgd + offset;
^1da177e4c3f415 Linus Torvalds     2005-04-16  303  
^1da177e4c3f415 Linus Torvalds     2005-04-16  304              if 
(!pgd_present(*pgd_k))
^1da177e4c3f415 Linus Torvalds     2005-04-16  305                      goto 
no_context;
^1da177e4c3f415 Linus Torvalds     2005-04-16  306              set_pgd(pgd, 
*pgd_k);
^1da177e4c3f415 Linus Torvalds     2005-04-16  307  
2bee1b58484f036 Mike Rapoport      2019-11-21  308              p4d = 
p4d_offset(pgd, address);
2bee1b58484f036 Mike Rapoport      2019-11-21  309              p4d_k = 
p4d_offset(pgd_k, address);
2bee1b58484f036 Mike Rapoport      2019-11-21  310              if 
(!p4d_present(*p4d_k))
2bee1b58484f036 Mike Rapoport      2019-11-21  311                      goto 
no_context;
2bee1b58484f036 Mike Rapoport      2019-11-21  312  
2bee1b58484f036 Mike Rapoport      2019-11-21  313              pud = 
pud_offset(p4d, address);
2bee1b58484f036 Mike Rapoport      2019-11-21  314              pud_k = 
pud_offset(p4d_k, address);
c6e8b587718c486 Ralf Baechle       2005-02-10  315              if 
(!pud_present(*pud_k))
c6e8b587718c486 Ralf Baechle       2005-02-10  316                      goto 
no_context;
c6e8b587718c486 Ralf Baechle       2005-02-10  317  
c6e8b587718c486 Ralf Baechle       2005-02-10  318              pmd = 
pmd_offset(pud, address);
c6e8b587718c486 Ralf Baechle       2005-02-10  319              pmd_k = 
pmd_offset(pud_k, address);
^1da177e4c3f415 Linus Torvalds     2005-04-16  320              if 
(!pmd_present(*pmd_k))
^1da177e4c3f415 Linus Torvalds     2005-04-16  321                      goto 
no_context;
^1da177e4c3f415 Linus Torvalds     2005-04-16  322              set_pmd(pmd, 
*pmd_k);
^1da177e4c3f415 Linus Torvalds     2005-04-16  323  
^1da177e4c3f415 Linus Torvalds     2005-04-16  324              pte_k = 
pte_offset_kernel(pmd_k, address);
^1da177e4c3f415 Linus Torvalds     2005-04-16  325              if 
(!pte_present(*pte_k))
^1da177e4c3f415 Linus Torvalds     2005-04-16  326                      goto 
no_context;
^1da177e4c3f415 Linus Torvalds     2005-04-16 @327              return;
^1da177e4c3f415 Linus Torvalds     2005-04-16  328      }
2ca2ebfd952d033 David Daney        2009-09-02  329  #endif
^1da177e4c3f415 Linus Torvalds     2005-04-16  330  }
c3fc5cd5c5a5f47 Ralf Baechle       2013-05-29  331  

:::::: The code at line 327 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <[email protected]>
:::::: CC: Linus Torvalds <[email protected]>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

Attachment: .config.gz
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