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Kernel: Make sys$disown not require the big lock

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This syscall had a TOCTOU where it checked the peer's PPID before
locking the protected data (where the PPID is stored).

After closing the race window, we can mark the syscall as not needing
the big lock.
This commit is contained in:
Andreas Kling 2023-04-03 13:24:20 +02:00
parent 5759ea19fb
commit 6132193bd4
2 changed files with 7 additions and 6 deletions
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2
Kernel/API/Syscall.h
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@ -66,7 +66,7 @@ enum class NeedsBigProcessLock {
S(create_thread, NeedsBigProcessLock::Yes) \
S(dbgputstr, NeedsBigProcessLock::No) \
S(detach_thread, NeedsBigProcessLock::Yes) \
S(disown, NeedsBigProcessLock::Yes) \
S(disown, NeedsBigProcessLock::No) \
S(dump_backtrace, NeedsBigProcessLock::No) \
S(dup2, NeedsBigProcessLock::No) \
S(emuctl, NeedsBigProcessLock::No) \