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SubjectRe: fs/proc: Crash observed in next_tgid (fs/proc/base.c)
> Test case: Not some specific test case.

Write 2 programs: one forks, clones, and execs randomly (but not going
out of control), another does open("/proc"), getdents in a loop.
Don't use shell scripts or readdir as they only bring overhead.

Run getdents in a loop and several forkers, see what happens.

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