| created | 2020-12-04T15:33:34Z |
|---|---|
| begin | 2020-10-15T03:14:00Z |
| end | 2020-10-15T04:28:43Z |
| path | src/sys |
| commits | 2 |
| date | 2020-10-15T04:28:42Z | |||
|---|---|---|---|---|
| author | cheloha | |||
| files | src/sys/kern/kern_exec.c | log | diff | annotate |
| src/sys/kern/kern_exit.c | log | diff | annotate | |
| message |
_exit(2), execve(2): cancel per-process interval timers safely During _exit(2) and sometimes during execve(2) we need to cancel any active per-process interval timers. We don't currently do this in an MP-safe way. Both syscalls ignore the locking assumptions documented in proc.h. The easiest way to make them MP-safe is to use setitimer(), just like the getitimer(2) and setitimer(2) syscalls do. To make things a bit cleaner I have added a helper function, cancelitimer(), so the callers don't need to fuss with an itimerval struct. While we're here we can remove the splclock/splx dance from execve(2). It is no longer necessary. ok deraadt@ |
|||
| date | 2020-10-15T04:28:43Z | |||
|---|---|---|---|---|
| author | cheloha | |||
| files | src/sys/kern/kern_time.c | log | diff | annotate |
| src/sys/sys/time.h | log | diff | annotate | |
| message |
_exit(2), execve(2): cancel per-process interval timers safely During _exit(2) and sometimes during execve(2) we need to cancel any active per-process interval timers. We don't currently do this in an MP-safe way. Both syscalls ignore the locking assumptions documented in proc.h. The easiest way to make them MP-safe is to use setitimer(), just like the getitimer(2) and setitimer(2) syscalls do. To make things a bit cleaner I have added a helper function, cancelitimer(), so the callers don't need to fuss with an itimerval struct. While we're here we can remove the splclock/splx dance from execve(2). It is no longer necessary. ok deraadt@ |
|||