Greg Kroah-Hartman 8ed0579c12 kvm: properly check debugfs dentry before using it ... debugfs can now report an error code if something went wrong instead of just NULL. So if the return value is to be used as a "real" dentry, it needs to be checked if it is an error before dereferencing it. This is now happening because of ff9fb72bc0 ("debugfs: return error values, not NULL"). syzbot has found a way to trigger multiple debugfs files attempting to be created, which fails, and then the error code gets passed to dentry_path_raw() which obviously does not like it. Reported-by: Eric Biggers <ebiggers@kernel.org> Reported-and-tested-by: syzbot+7857962b4d45e602b8ad@syzkaller.appspotmail.com Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: kvm@vger.kernel.org Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2019-02-28 08:57:32 -08:00
..
arm	KVM: arm64: Relax the restriction on using stage2 PUD huge mapping	2019-02-07 11:44:47 +00:00
async_pf.c	KVM: fix some typos	2018-12-21 11:28:26 +01:00
async_pf.h	KVM: fix checkpatch.pl errors in kvm/async_pf.h	2015-06-19 17:16:25 +02:00
coalesced_mmio.c	KVM: fix unregistering coalesced mmio zone from wrong bus	2018-12-18 22:07:25 +01:00
coalesced_mmio.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
eventfd.c	Miscellaneous bugfixes, plus a small patchlet related to Spectre v2.	2018-07-18 11:08:44 -07:00
irqchip.c	KVM: use rcu access function for irq routing	2017-07-07 15:24:15 +02:00
Kconfig	KVM: arm64: Prevent KVM_COMPAT from being selected	2018-06-21 17:17:50 +01:00
kvm_main.c	kvm: properly check debugfs dentry before using it	2019-02-28 08:57:32 -08:00
vfio.c	vfio: New external user group/file match	2017-06-28 13:50:05 -06:00
vfio.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00