On 2/8/21 1:53 PM, Alastair Hogge wrote:
Boot to multi-user; login (getty):
$ doas kldload /boot/modules/amdgpu.ko
$ sysctl
[panic]
..is a guaranteed way to panic my system.
Hi,
Maybe you could do a hack and edit the sysctl source code:
1) print the sysctl before it is queried.
2) sleep 1 second between print and query.
Should be easy to nail this down!
--HPS
diff --git a/sbin/sysctl/sysctl.c b/sbin/sysctl/sysctl.c
index 30d6d94723f..4b45bb2f967 100644
--- a/sbin/sysctl/sysctl.c
+++ b/sbin/sysctl/sysctl.c
@@ -336,6 +336,10 @@ parse_numeric(const char *newvalstr, const char *fmt, u_int kind,
return (true);
}
+#define sysctl(...) ({ \
+ usleep(1000000); \
+ sysctl(__VA_ARGS__); })
+
/*
* Parse a name into a MIB entry.
* Lookup and print out the MIB entry if it exists.
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