]> git.ipfire.org Git - thirdparty/linux.git/commit
projects / thirdparty / linux.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: d699986) | patch
KVM: s390: Fix race in __do_essa()
authorClaudio Imbrenda <imbrenda@linux.ibm.com>
Mon, 3 Aug 2026 12:40:34 +0000 (14:40 +0200)
committerClaudio Imbrenda <imbrenda@linux.ibm.com>
Mon, 3 Aug 2026 14:51:34 +0000 (16:51 +0200)
commit4db7207052874f13dec1e9be384cca279c6693e8
tree47a463a2dd197211462901a4dcc67e558da3570btree | snapshot
parentd699986f11bf854bddecd6b1bfdf53e05ef945d6commit | diff
KVM: s390: Fix race in __do_essa()

An unlikely race between __do_essa() and kvm_s390_vm_start_migration(),
kvm_s390_vm_stop_migration(), or dat_get_cmma() was possible.

Fix by locking kvm->slots_arch_lock. Since this is not a hot path, the
overhead of an additional mutex is negligible.

Fixes: e38c884df921 ("KVM: s390: Switch to new gmap")
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-ID: <20260803124040.126471-8-imbrenda@linux.ibm.com>
arch/s390/kvm/kvm-s390.c diff | blob | blame | history
arch/s390/kvm/priv.c diff | blob | blame | history
A mirror of Linus' kernel repository