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| author | Yu Kuai <yukuai3@huawei.com> | 2025-09-23 15:01:01 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-09-23 01:35:52 -0600 |
| commit | 670bfe683850cb29957a9d71f997e9774eb24de6 (patch) | |
| tree | 09ea5172b2f505a5e2eae44e1e8c2e2b7c19bdfa /tools/testing/selftests/net/lib/py/netns.py | |
| parent | fea55691aca1edf2fe612fd75536ec26354a8c4a (diff) | |
blk-mq: fix null-ptr-deref in blk_mq_free_tags() from error path
blk_mq_free_tags() can be called after blk_mq_init_tags(), while
tags->page_list is still not initialized, causing null-ptr-deref.
Fix this problem by initializing tags->page_list at blk_mq_init_tags(),
meanwhile, also free tags directly from error path because there is no
srcu barrier.
Fixes: ad0d05dbddc1 ("blk-mq: Defer freeing of tags page_list to SRCU callback")
Reported-by: syzbot+5c5d41e80248d610221f@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/68d1b079.a70a0220.1b52b.0000.GAE@google.com/
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/testing/selftests/net/lib/py/netns.py')
0 files changed, 0 insertions, 0 deletions