ceph: fix page vector leak on encrypted netfs read EIO path

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ceph_netfs_issue_read() pins pages with iov_iter_get_pages_alloc2() for
encrypted inodes and attaches them with own_pages=false. If
ceph_inc_osd_stopping_blocker() then fails, the request is dropped
without calling finish_netfs_read(), so the page array and the
references taken on those pages leak: ceph_osd_data_release() only
frees pages when own_pages is true, and __free_pages() would be the
wrong destructor for GUP-pinned pages.

Release the vector with put_page() and kvfree() on that error path,
matching finish_netfs_read(). Unencrypted ITER reads are unaffected.

Fixes: 1464de9f81 ("ceph: wait for OSD requests' callbacks to finish when unmounting")
Signed-off-by: Alex Markuze <amarkuze@redhat.com>
Reviewed-by: Tal Zussman <tz2294@columbia.edu>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

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Alex Markuze 2026-08-24 18:50:03 +00:00 • committed by Ilya Dryomov

parent 6ce5143eea

commit 00a0d7f377

1 changed files with 11 additions and 0 deletions

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fs/ceph/addr.c

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