| created | 2021-12-12T20:17:59Z |
|---|---|
| begin | 2021-12-07T00:00:00Z |
| end | 2021-12-07T01:19:47Z |
| path | src/sys |
| commits | 1 |
| date | 2021-12-07T01:19:47Z | |||
|---|---|---|---|---|
| author | mvs | |||
| files | src/sys/kern/uipc_usrreq.c | log | diff | annotate |
| src/sys/sys/unpcb.h | log | diff | annotate | |
| message |
Make `unp_msgcount' and `unp_file' protection with `unp_gc_lock' rwlock(9). This save us from from races provided by unlocked access to the `f_count' which cause false marking alive socket as dead. We always modify `f_count' and `unp_msgcount' together so the `f_count' modification should also pass the `unp_gc_rwlock' before `unp_msgcount' increment and after `unp_msgcount' decrement. The locked `unp_file' assignment avoids us from drain unp_gc() run. This moves unp_gc() locking back when these wariables were protected with the same lock which was taken for all garbage collector run but uses another lock not `unp_lock'. ok kettenis@ bluhm@ |
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