2016-11-17 15:55+0100, Paolo Bonzini: > Reported by syzkaller: > > [ INFO: suspicious RCU usage. ] > 4.9.0-rc4+ #47 Not tainted > ------------------------------- > ./include/linux/kvm_host.h:536 suspicious rcu_dereference_check() usage! > > stack backtrace: > CPU: 1 PID: 6679 Comm: syz-executor Not tainted 4.9.0-rc4+ #47 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > ffff880039e2f6d0 ffffffff81c2e46b ffff88003e3a5b40 0000000000000000 > 0000000000000001 ffffffff83215600 ffff880039e2f700 ffffffff81334ea9 > ffffc9000730b000 0000000000000004 ffff88003c4f8420 ffff88003d3f8000 > Call Trace: > [< inline >] __dump_stack lib/dump_stack.c:15 > [<ffffffff81c2e46b>] dump_stack+0xb3/0x118 lib/dump_stack.c:51 > [<ffffffff81334ea9>] lockdep_rcu_suspicious+0x139/0x180 kernel/locking/lockdep.c:4445 > [< inline >] __kvm_memslots include/linux/kvm_host.h:534 > [< inline >] kvm_memslots include/linux/kvm_host.h:541 > [<ffffffff8105d6ae>] kvm_gfn_to_hva_cache_init+0xa1e/0xce0 virt/kvm/kvm_main.c:1941 > [<ffffffff8112685d>] kvm_lapic_set_vapic_addr+0xed/0x140 arch/x86/kvm/lapic.c:2217 > > Reported-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx> > Fixes: fda4e2e85589191b123d31cdc21fd33ee70f50fd > Cc: Andrew Honig <ahonig@xxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx> > --- Applied to kvm/master, thanks. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
