Author: andrew
Date: Thu Nov 21 13:59:01 2019
New Revision: 354952
URL: https://svnweb.freebsd.org/changeset/base/354952
Log:
Disable KCSAN within a panic.
The kernel is single threaded at this point and the panic is more
important.
Sponsored by: DARPA, AFRL
Modified:
head/sys/kern/subr_csan.c
Modified: head/sys/kern/subr_csan.c
==============================================================================
--- head/sys/kern/subr_csan.c Thu Nov 21 13:57:30 2019 (r354951)
+++ head/sys/kern/subr_csan.c Thu Nov 21 13:59:01 2019 (r354952)
@@ -153,6 +153,8 @@ kcsan_access(uintptr_t addr, size_t size, bool write,
return;
if (__predict_false(kcsan_md_unsupported((vm_offset_t)addr)))
return;
+ if (__predict_false(panicstr != NULL))
+ return;
new.addr = addr;
new.size = size;
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