If read_mem() goes before *map_address* has been mapped, dereference to the *map_address*(nul) will cause the Segment Fault.
So, let read_mem() yield the CPU when *map_address* hasn't been mapped. Which version do you prefer to? Thanks Signed-off-by: Wanlong Gao <[email protected]> --- testcases/kernel/mem/mtest06/mmap1.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/testcases/kernel/mem/mtest06/mmap1.c b/testcases/kernel/mem/mtest06/mmap1.c index cd11912..0aa1c2b 100644 --- a/testcases/kernel/mem/mtest06/mmap1.c +++ b/testcases/kernel/mem/mtest06/mmap1.c @@ -352,6 +352,9 @@ read_mem(void *args) /* number of reads performed */ long *rmargs = args; /* local pointer to the arguments */ long exit_val = 0; /* pthread exit value */ + while (!map_address) + sched_yield(); + tst_resm(TINFO, "pid[%d] - read contents of memory %p %ld times", getpid(), map_address, rmargs[2]); if (verbose_print) @@ -608,4 +611,4 @@ main(int argc, /* number of input parameters. */ close(fd); }while (TRUE); exit (0); -} \ No newline at end of file +} -- 1.7.7.rc1 ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2dcopy2 _______________________________________________ Ltp-list mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ltp-list
