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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-30 10:20:57 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-30 10:20:57 +0100 |
| commit | ee9dcf22a075bce42d85b58108ca601ca434e663 (patch) | |
| tree | 3d45f9e2fe020d467fbca570d9c4d481afa190ac /kvm-properly-check-debugfs-dentry-before-using-it.patch | |
| parent | 40c493e29885df8b9e3eaef8418af97ce8a90967 (diff) | |
| download | patches-ee9dcf22a075bce42d85b58108ca601ca434e663.tar.gz | |
update patches based on what is merged in Linus's tree
Diffstat (limited to 'kvm-properly-check-debugfs-dentry-before-using-it.patch')
| -rw-r--r-- | kvm-properly-check-debugfs-dentry-before-using-it.patch | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/kvm-properly-check-debugfs-dentry-before-using-it.patch b/kvm-properly-check-debugfs-dentry-before-using-it.patch deleted file mode 100644 index 419de3dd9baaab..00000000000000 --- a/kvm-properly-check-debugfs-dentry-before-using-it.patch +++ /dev/null @@ -1,36 +0,0 @@ -From foo@baz Thu Feb 28 16:02:54 CET 2019 -Date: Thu, 28 Feb 2019 16:02:54 +0100 -To: Greg KH <gregkh@linuxfoundation.org> -From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -Subject: [PATCH] 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 ff9fb72bc077 ("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> ---- - virt/kvm/kvm_main.c | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - ---- a/virt/kvm/kvm_main.c -+++ b/virt/kvm/kvm_main.c -@@ -4044,7 +4044,7 @@ static void kvm_uevent_notify_change(uns - } - add_uevent_var(env, "PID=%d", kvm->userspace_pid); - -- if (kvm->debugfs_dentry) { -+ if (!IS_ERR_OR_NULL(kvm->debugfs_dentry)) { - char *tmp, *p = kmalloc(PATH_MAX, GFP_KERNEL); - - if (p) { |