[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] xen/arm: Don't dump stack when the VCPU is offline
When a VCPU is not yet online, the registers contain garbagge. This will result to call randomly BUG() in show_guest_stack. Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx> --- xen/arch/arm/traps.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c index 02c7e28..36fd411 100644 --- a/xen/arch/arm/traps.c +++ b/xen/arch/arm/traps.c @@ -614,6 +614,12 @@ static void show_guest_stack(struct vcpu *v, struct cpu_user_regs *regs) void *mapped; unsigned long *stack, addr; + if ( test_bit(_VPF_down, &v->pause_flags) ) + { + printk("No stack trace, VCPU offline\n"); + return; + } + switch ( regs->cpsr & PSR_MODE_MASK ) { case PSR_MODE_USR: -- 1.7.10.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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