std.debug: Gracefully handle process_vm_readv() EPERM in MemoryAccess…

…or.read(). Closes #21815.
ziglang · Nov 20, 2024 · f845fa0 · f845fa0
1 parent a5d4ad1
commit f845fa0
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/std/debug/MemoryAccessor.zig b/lib/std/debug/MemoryAccessor.zig
@@ -48,7 +48,8 @@ fn read(ma: *MemoryAccessor, address: usize, buf: []u8) bool {
                 switch (linux.E.init(bytes_read)) {
                     .SUCCESS => return bytes_read == buf.len,
                     .FAULT => return false,
-                    .INVAL, .PERM, .SRCH => unreachable, // own pid is always valid
+                    .INVAL, .SRCH => unreachable, // own pid is always valid
+                    .PERM => {}, // Known to happen in containers.
                     .NOMEM => {},
                     .NOSYS => {}, // QEMU is known not to implement this syscall.
                     else => unreachable, // unexpected