mingming cao wrote:
>Here is what I saw:
>
>[root@elm3b83 shmctl]# ./shmctl01
>shmctl01 1 PASS : pid, size, # of attaches and mode are correct -
>pass #1
>shmctl01 0 INFO : shmdt() failed - 22
>shmctl01 0 INFO : shmdt() failed - 22
>shmctl01 0 INFO : shmdt() failed - 22
>shmctl01 0 INFO : shmdt() failed - 22
>
These failures are caused by a bug in the ltp test. See the attached patch.
>shmctl01 2 PASS : pid, size, # of attaches and mode are correct -
>pass #2
>shmctl01 0 INFO : shmdt() failed - 22
>shmctl01 0 INFO : shmdt() failed - 22
>shmctl01 0 INFO : shmdt() failed - 22
>shmctl01 0 INFO : shmdt() failed - 22
>shmctl01 3 FAIL : # of attaches is incorrect - 0
>
This one is odd. The testcase contains races, but they can only increase
# of attaches.
Could you strace shmctl01?
The testcase with shmat(), then fork() fails.
--
Manfred
diff -u ltp-orig/testcases/kernel/syscalls/ipc/shmctl/shmctl01.c ltp-20021008/testcases/kernel/syscalls/ipc/shmctl/shmctl01.c --- ltp-orig/testcases/kernel/syscalls/ipc/shmctl/shmctl01.c Tue May 21 15:55:56 2002 +++ ltp-20021008/testcases/kernel/syscalls/ipc/shmctl/shmctl01.c Fri Oct 25 22:14:23 2002 @@ -252,10 +252,12 @@ if (stat_time == FIRST) { test = set_shmat(); + } else { + test = set_shared; } /* do an assignement for fun */ - (int *)test = i; + *(int *)test = i; /* pause until we get a signal from stat_cleanup() */ rval = pause(); @@ -273,7 +275,7 @@ } } /* sleep briefly to ensure correct execution order */ - usleep(25000); + usleep(250000); } /*
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This archive was generated by hypermail 2b29 : Thu Oct 31 2002 - 22:00:28 EST