> 2022年6月28日 17:10，Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> 写道： > > On Tue, Jun 28, 2022 at 04:49:33PM +0800, Coly Li wrote: >> The local variables check_state (in bch_btree_check()) and state (in >> bch_sectors_dirty_init()) should be fully filled by 0, because before >> allocating them on stack, they were dynamically allocated by kzalloc(). >> >> Signed-off-by: Coly Li <colyli@xxxxxxx> >> Link: https://lore.kernel.org/r/20220527152818.27545-2-colyli@xxxxxxx >> Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> >> --- >> drivers/md/bcache/btree.c | 1 + >> drivers/md/bcache/writeback.c | 1 + >> 2 files changed, 2 insertions(+) >> >> diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c >> index 2362bb8ef6d1..e136d6edc1ed 100644 >> --- a/drivers/md/bcache/btree.c >> +++ b/drivers/md/bcache/btree.c >> @@ -2017,6 +2017,7 @@ int bch_btree_check(struct cache_set *c) >> if (c->root->level == 0) >> return 0; >> >> + memset(&check_state, 0, sizeof(struct btree_check_state)); >> check_state.c = c; >> check_state.total_threads = bch_btree_chkthread_nr(); >> check_state.key_idx = 0; >> diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c >> index 75b71199800d..d138a2d73240 100644 >> --- a/drivers/md/bcache/writeback.c >> +++ b/drivers/md/bcache/writeback.c >> @@ -950,6 +950,7 @@ void bch_sectors_dirty_init(struct bcache_device *d) >> return; >> } >> >> + memset(&state, 0, sizeof(struct bch_dirty_init_state)); >> state.c = c; >> state.d = d; >> state.total_threads = bch_btre_dirty_init_thread_nr(); >> -- >> 2.35.3 >> > > What is the git commit id of this patch in Linus's tree? Oops, the commit tag in email was filtered out. This patch in Linus tree is commit 7d6b902ea0e0 (“bcache: memset on stack variables in bch_btree_check() and bch_sectors_dirty_init()”) Thanks. Coly Li
