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kernel/vm: Fix set_memory_protection syscall.

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check_protection adds kernel flags, so we need to do that after
checking the already-set flags.

Fixes #19988.
This commit is contained in:
Augustin Cavalier
2026-03-23 14:31:51 -04:00
parent 935941e772
commit 54ad26255c
1 changed files with 3 additions and 3 deletions
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src/system/kernel/vm/vm.cpp
+3 -3
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@@ -6278,14 +6278,14 @@ _user_set_memory_protection(void* _address, size_t size, uint32 protection)
return ENOMEM;
}
if ((protection & ~(B_READ_AREA | B_WRITE_AREA | B_EXECUTE_AREA)) != 0)
return B_BAD_VALUE;
team_id team = team_get_current_team_id();
status_t status = check_protection(team, &protection);
if (status != B_OK)
return status;
if ((protection & ~(B_READ_AREA | B_WRITE_AREA | B_EXECUTE_AREA)) != 0)
return B_BAD_VALUE;
// We need to write lock the address space, since we're going to play with
// the areas. Also make sure that none of the areas is wired and that we're
// actually allowed to change the protection.