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This protects against a race with an upcall in the parent during the fork which can clobber the parent's tcb before the vm space is copied in the child. The child then gets a corrupted tcb that is either null or that points to another thread that doesn't exist in the child (after a fork, only the fork()ing thread exists in the child). Reported by: Arno J. Klaassen (arno at heho / snv / jussieu / fr) |
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| .. | ||
| arch | ||
| support | ||
| sys | ||
| test | ||
| thread | ||
| kse.map | ||
| Makefile | ||