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authorJens Axboe <axboe@kernel.dk>2022-05-26 20:34:33 +0300
committerJens Axboe <axboe@kernel.dk>2022-05-31 11:50:06 +0300
commit21870e02fcd385c39fe635e6531ce78302f3cd71 (patch)
tree48e100de76ae52bd15636ea49492ddaefe82f862 /fs
parent1151a7cccbd2cfd5a552805c92c92fb264a957d5 (diff)
downloadlinux-21870e02fcd385c39fe635e6531ce78302f3cd71.tar.xz
io_uring: fix a memory leak of buffer group list on exit
If we use a buffer group ID that is large enough to require io_uring to allocate it, then we don't correctly free it if the cleanup is deferred to the ring exit. The explicit removal paths are fine. Fixes: 9cfc7e94e42b ("io_uring: get rid of hashed provided buffer groups") Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
-rw-r--r--fs/io_uring.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c
index ae2cc17edd2c..f14ebe4bb65d 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -11065,6 +11065,7 @@ static void io_destroy_buffers(struct io_ring_ctx *ctx)
xa_for_each(&ctx->io_bl_xa, index, bl) {
xa_erase(&ctx->io_bl_xa, bl->bgid);
__io_remove_buffers(ctx, bl, -1U);
+ kfree(bl);
}
while (!list_empty(&ctx->io_buffers_pages)) {