On 08/28/2013 05:07 PM, Dave Kleikamp wrote: > Make map_address a volatile pointer so that it is dereferenced in > read_mem() after read_lock is set. > > Also read_lock must protect the verbose printf that reads from map_address > as well. > > Signed-off-by: Dave Kleikamp <[email protected]> > > diff --git a/testcases/kernel/mem/mtest06/mmap1.c > b/testcases/kernel/mem/mtest06/mmap1.c > index 7c80bb4..cd1127f 100644 > --- a/testcases/kernel/mem/mtest06/mmap1.c > +++ b/testcases/kernel/mem/mtest06/mmap1.c > @@ -62,7 +62,7 @@ > } while (0) > > static int verbose_print = 0; > -static char *map_address; > +static char *volatile map_address; > static jmp_buf jmpbuf; > static volatile char read_lock = 0; > > @@ -228,11 +228,13 @@ void *read_mem(void *ptr) > tst_resm(TINFO, "page fault occurred due to " > "a read after an unmap"); > } else { > - if (verbose_print) > + if (verbose_print) { > + read_lock = 1; > tst_resm(TINFO, > "read_mem(): content of memory: %s", > (char *)map_address); > - > + read_lock = 0; > + } > for (j = 0; j < args[1]; j++) { > read_lock = 1; > if (map_address[j] != 'a') > > ------------------------------------------------------------------------------ > Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! > Discover the easy way to master current and previous Microsoft technologies > and advance your career. Get an incredible 1,500+ hours of step-by-step > tutorial videos with LearnDevNow. Subscribe today and save! > http://pubads.g.doubleclick.net/gampad/clk?id=58040911&iu=/4140/ostg.clktrk > _______________________________________________ > Ltp-list mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ltp-list
Just in case.. To reproduce failures we need to invoke the test this way, for example: ./mmap1 -v -s 10 and then wait few minutes (it depends...) ------------------------------------------------------------------------------ Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58040911&iu=/4140/ostg.clktrk _______________________________________________ Ltp-list mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ltp-list
