diff options
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/exec.c b/fs/exec.c index 2c942e2d14ea..4ccaaa4b13b2 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1692,7 +1692,10 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs) if (!binfmt || !binfmt->core_dump) goto fail; down_write(&mm->mmap_sem); - if (!get_dumpable(mm)) { + /* + * If another thread got here first, or we are not dumpable, bail out. + */ + if (mm->core_waiters || !get_dumpable(mm)) { up_write(&mm->mmap_sem); goto fail; } @@ -1706,7 +1709,6 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs) flag = O_EXCL; /* Stop rewrite attacks */ current->fsuid = 0; /* Dump root private */ } - set_dumpable(mm, 0); retval = coredump_wait(exit_code); if (retval < 0) |