From f845fa04a0dce3104efe129c73a6ad792b1712b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Tue, 12 Nov 2024 16:59:22 +0100
Subject: [PATCH] std.debug: Gracefully handle process_vm_readv() EPERM in
 MemoryAccessor.read().

Closes #21815.
---
 lib/std/debug/MemoryAccessor.zig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/std/debug/MemoryAccessor.zig b/lib/std/debug/MemoryAccessor.zig
index bfdda609f6..a420d9cdcf 100644
--- 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