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    SubjectBug in 2.4.0-test9 and test10 with sys_shmat()
    Sending -1 as the shmid to shmat will cause an oops.  2.2.16 caught this
    with simple boundry checking, so replace the lines

    if (!shm_sb || (shmid % SEQ_MULTIPLIER) == zero_id)
    return -EINVAL;

    with

    if (!shm_sb || shmid < 0 || (shmid % SEQ_MULTIPLIER) == zero_id)
    return -EINVAL;

    Simple program to demonstrate the bug...

    #include <sys/ipc.h>
    #include <sys/shm.h>

    int main(void) {
    shmat(-1,0,0);
    return 0;
    }

    Rich
    jerrell@missioncriticallinux.com


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