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| author | Christian Brauner <brauner@kernel.org> | 2026-06-01 15:56:39 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2026-06-29 10:44:06 +0200 |
| commit | 2626320e3123bab4620260c1926bd7962e1322c5 (patch) | |
| tree | 66c686addbb4c267479761781b335bd33025e4fc | |
| parent | 9a8e296958884b807a02759975170b6559901242 (diff) | |
| download | linux-stable-2626320e3123bab4620260c1926bd7962e1322c5.tar.gz linux-stable-2626320e3123bab4620260c1926bd7962e1322c5.zip | |
rnbd: use scoped_with_init_fs() for block device open
Use scoped_with_init_fs() to temporarily override current->fs for
the bdev_file_open_by_path() call so the path lookup happens in
init's filesystem context.
process_msg_open() ← rnbd_srv_rdma_ev() ← RDMA completion callback ←
ib_cq_poll_work() ← kworker (InfiniBand completion workqueue)
Link: https://patch.msgid.link/20260601-work-kthread-nullfs-v4-6-77ee053060e0@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
| -rw-r--r-- | drivers/block/rnbd/rnbd-srv.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/block/rnbd/rnbd-srv.c b/drivers/block/rnbd/rnbd-srv.c index 10e8c438bb43..79c9a5fb418f 100644 --- a/drivers/block/rnbd/rnbd-srv.c +++ b/drivers/block/rnbd/rnbd-srv.c @@ -11,6 +11,7 @@ #include <linux/module.h> #include <linux/blkdev.h> +#include <linux/fs_struct.h> #include "rnbd-srv.h" #include "rnbd-srv-trace.h" @@ -734,7 +735,8 @@ static int process_msg_open(struct rnbd_srv_session *srv_sess, goto reject; } - bdev_file = bdev_file_open_by_path(full_path, open_flags, NULL, NULL); + scoped_with_init_fs() + bdev_file = bdev_file_open_by_path(full_path, open_flags, NULL, NULL); if (IS_ERR(bdev_file)) { ret = PTR_ERR(bdev_file); pr_err("Opening device '%s' on session %s failed, failed to open the block device, err: %pe\n", |