https://github.com/torvalds/linux
Revision 9432a3175770e06cb83eada2d91fac90c977cb99 authored by Paolo Bonzini on 28 May 2018, 11:31:13 UTC, committed by Paolo Bonzini on 18 July 2018, 09:31:27 UTC
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>
1 parent b5020a8
History
Tip revision: 9432a3175770e06cb83eada2d91fac90c977cb99 authored by Paolo Bonzini on 28 May 2018, 11:31:13 UTC
KVM: irqfd: fix race between EPOLLHUP and irq_bypass_register_consumer
Tip revision: 9432a31
File Mode Size
Documentation
LICENSES
arch
block
certs
crypto
drivers
firmware
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.clang-format -rw-r--r-- 12.8 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 31 bytes
.gitattributes -rw-r--r-- 30 bytes
.gitignore -rw-r--r-- 1.5 KB
.mailmap -rw-r--r-- 9.2 KB
COPYING -rw-r--r-- 423 bytes
CREDITS -rw-r--r-- 96.3 KB
Kbuild -rw-r--r-- 2.2 KB
Kconfig -rw-r--r-- 287 bytes
MAINTAINERS -rw-r--r-- 441.9 KB
Makefile -rw-r--r-- 61.0 KB
README -rw-r--r-- 800 bytes

README

back to top