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| author | Hongbo Li <lihongbo22@huawei.com> | 2024-10-29 20:53:29 +0800 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-11-07 16:48:21 -0500 |
| commit | 9bb33852f5cc145b17d96f3792ff69148a37e1fd (patch) | |
| tree | 83b07d77213c487a8fed3223da63c3447bd1daff /fs | |
| parent | 93d53f1caf2cf861d0f28d096792d3b92efae178 (diff) | |
| download | linux-stable-9bb33852f5cc145b17d96f3792ff69148a37e1fd.tar.gz linux-stable-9bb33852f5cc145b17d96f3792ff69148a37e1fd.tar.bz2 linux-stable-9bb33852f5cc145b17d96f3792ff69148a37e1fd.zip | |
bcachefs: check the invalid parameter for perf test
The perf_test does not check the number of iterations and threads
when it is zero. If nr_thread is 0, the perf test will keep
waiting for wakekup. If iteration is 0, it will cause exception
of division by zero. This can be reproduced by:
echo "rand_insert 0 1" > /sys/fs/bcachefs/${uuid}/perf_test
or
echo "rand_insert 1 0" > /sys/fs/bcachefs/${uuid}/perf_test
Fixes: 1c6fdbd8f246 ("bcachefs: Initial commit")
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/bcachefs/tests.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/bcachefs/tests.c b/fs/bcachefs/tests.c index 315038a0a92d..fb5c1543e52f 100644 --- a/fs/bcachefs/tests.c +++ b/fs/bcachefs/tests.c @@ -809,6 +809,11 @@ int bch2_btree_perf_test(struct bch_fs *c, const char *testname, unsigned i; u64 time; + if (nr == 0 || nr_threads == 0) { + pr_err("nr of iterations or threads is not allowed to be 0"); + return -EINVAL; + } + atomic_set(&j.ready, nr_threads); init_waitqueue_head(&j.ready_wait); |