| created | 2022-10-05T09:47:12Z |
|---|---|
| begin | 2022-09-28T00:00:00Z |
| end | 2022-09-29T00:00:00Z |
| path | src/sys |
| commits | 1 |
| date | 2022-09-28T13:21:13Z | |||
|---|---|---|---|---|
| author | mbuhl | |||
| files | src/sys/kern/sysv_sem.c | log | diff | annotate |
| message |
Fix memory corruptions with sysv semaphores due to sleeps in copyin, copyout and malloc. During a sleep another thread could delete the semaphore (and possibly allocate another one at the same location with different permissions) which would lead to an invalid access after wake up. Therefore check the semaphore pointer, the sequence, the permissions and some values in seminfo after each sleep. OK bluhm@ Reported-by: [email protected] |
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