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Commit 3e27249c authored by Rusty Russell's avatar Rusty Russell Committed by Linus Torvalds
Browse files

lguest: fix bug in setting guest GDT entry 



We kill the guest, but then we blatt random stuff.

Reported-by: default avatarDan Carpenter <error27@gmail.com>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 741f21e8

drivers/lguest/segments.c

+3 −1
Original line number Diff line number Diff line
@@ -179,8 +179,10 @@ void load_guest_gdt_entry(struct lg_cpu *cpu, u32 num, u32 lo, u32 hi) 
	 * We assume the Guest has the same number of GDT entries as the

	 * Host, otherwise we'd have to dynamically allocate the Guest GDT.

	 */

	if (num >= ARRAY_SIZE(cpu->arch.gdt))

	if (num >= ARRAY_SIZE(cpu->arch.gdt)) {

		kill_guest(cpu, "too many gdt entries %i", num);

		return;

	}



	/* Set it up, then fix it. */

	cpu->arch.gdt[num].a = lo;