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| author | Bjoern Doebel <doebel@amazon.de> | 2026-10-01 08:24:11 +0000 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2026-10-12 11:24:28 +0200 |
| commit | 9ba6627ef6b12debd1c54443939718db63234274 (patch) | |
| tree | 25857cb8c631c2e7b983b694050f64b2f4b2e589 /tools/lib/python | |
| parent | 123dcfe87d5f8c9a2ff489545e85c0345de9e21c (diff) | |
| download | linux-next-9ba6627ef6b12debd1c54443939718db63234274.tar.gz linux-next-9ba6627ef6b12debd1c54443939718db63234274.zip | |
selftests/filesystems: Fix idmapped_tmpfile layer dir ownership
The recent idmapped_tmpfile selftest creates a new directory in tmpfs
owned by user ID 0. It then idmaps the mount as caller [0,10000) to disk
[10000,20000). The original uid 0 owner does not exist in the mapped
range. As a result, mapped_caller_creates_and_links fails at the
O_TMPFILE open because inode_permission() rejects MAY_WRITE access:
idmapped_tmpfile.c:145:mapped_caller_creates_and_links:
Expected fd (-1) >= 0 (0)
Chown the directory into the mapped range to satisfy the UID
requirement.
Fixes: d943e68edc5cb ("selftests/filesystems: test O_TMPFILE creation on idmapped mounts")
Cc: stable@vger.kernel.org # 7.2+
Signed-off-by: Bjoern Doebel <doebel@amazon.de>
Link: https://patch.msgid.link/20261001082411.1493072-1-doebel@amazon.de
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Diffstat (limited to 'tools/lib/python')
0 files changed, 0 insertions, 0 deletions