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| author | Ming Lei <ming.lei@redhat.com> | 2020-10-09 12:03:56 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-10-09 12:32:06 -0600 |
| commit | 7ea6bf2e6c409e245a31b9ac6a4ba24949ad442f (patch) | |
| tree | 709047965688b8a10260522de051e5fe23afbbb9 /block | |
| parent | f4ac712e4fe009635344b9af5d890fe25fcc8c0d (diff) | |
| download | linux-stable-7ea6bf2e6c409e245a31b9ac6a4ba24949ad442f.tar.gz linux-stable-7ea6bf2e6c409e245a31b9ac6a4ba24949ad442f.tar.bz2 linux-stable-7ea6bf2e6c409e245a31b9ac6a4ba24949ad442f.zip | |
percpu_ref: don't refer to ref->data if it isn't allocated
We can't check ref->data->confirm_switch directly in __percpu_ref_exit(), since
ref->data may not be allocated in one not-initialized refcount.
Fixes: 2b0d3d3e4fcf ("percpu_ref: reduce memory footprint of percpu_ref in fast path")
Reported-by: syzbot+fd15ff734dace9e16437@syzkaller.appspotmail.com
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions