Check the frame pointer is within the kernel before accessing it.
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=287113
@ -32,6 +32,7 @@ __FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <machine/stack.h>
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#include <machine/vmparam.h>
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int
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unwind_frame(struct unwind_state *frame)
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@ -39,7 +40,7 @@ unwind_frame(struct unwind_state *frame)
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uint64_t fp;
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fp = frame->fp;
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if (fp == 0)
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if (!INKERNEL(fp))
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return (-1);
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frame->sp = fp + 0x10;
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