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A fix from Patrick for a variety of CephFS lockup scenarios caused by

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a regression in cap handling which sneaked in through the netfs helper
 library in 5.18 (marked for stable) and an unrelated one-line cleanup.
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Merge tag 'ceph-for-6.12-rc2' of https://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "A fix from Patrick for a variety of CephFS lockup scenarios caused by
  a regression in cap handling which sneaked in through the netfs helper
  library in 5.18 (marked for stable) and an unrelated one-line cleanup"

* tag 'ceph-for-6.12-rc2' of https://github.com/ceph/ceph-client:
  ceph: fix cap ref leak via netfs init_request
  ceph: use struct_size() helper in __ceph_pool_perm_get()
This commit is contained in:
Linus Torvalds 2024-10-04 10:10:23 -07:00
commit a3a37691e6
1 changed files with 5 additions and 2 deletions
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7
fs/ceph/addr.c
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@ -489,8 +489,11 @@ static int ceph_init_request(struct netfs_io_request *rreq, struct file *file)
rreq->io_streams[0].sreq_max_len = fsc->mount_options->rsize;
out:
if (ret < 0)
if (ret < 0) {
if (got)
ceph_put_cap_refs(ceph_inode(inode), got);
kfree(priv);
}
return ret;
}
@ -2145,7 +2148,7 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci,
}
pool_ns_len = pool_ns ? pool_ns->len : 0;
perm = kmalloc(sizeof(*perm) + pool_ns_len + 1, GFP_NOFS);
perm = kmalloc(struct_size(perm, pool_ns, pool_ns_len + 1), GFP_NOFS);
if (!perm) {
err = -ENOMEM;
goto out_unlock;