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| author | Paolo Bonzini <pbonzini@redhat.com> | 2018-05-28 14:31:13 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-07-18 12:31:27 +0300 |
| commit | 9432a3175770e06cb83eada2d91fac90c977cb99 (patch) | |
| tree | 13f5e44fdcc83b3b5fdc7607290064130af84853 /arch | |
| parent | b5020a8e6b54d2ece80b1e7dedb33c79a40ebd47 (diff) | |
| download | linux-9432a3175770e06cb83eada2d91fac90c977cb99.tar.xz | |
KVM: irqfd: fix race between EPOLLHUP and irq_bypass_register_consumer
A comment warning against this bug is there, but the code is not doing what
the comment says. Therefore it is possible that an EPOLLHUP races against
irq_bypass_register_consumer. The EPOLLHUP handler schedules irqfd_shutdown,
and if that runs soon enough, you get a use-after-free.
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions