Levin Zimmermann authored Nov 11, 2025 and Kirill Smelkov committed Jan 30, 2026

On kernel 5.10.0-10-amd64, wcfs tests intermittently fail due to
inconsistent FUSE error codes when the filesystem daemon is killed.
Some read operations receive ECONNABORTED while others receive
ENOTCONN, causing test assertions to fail.

The inconsistency was observed on an older kernel (5.10.x)
but not on a newer kernel (6.1.0-40-amd64+), suggesting the race
has been fixed in later kernel versions.

[1] Traceback is:

    ______________________________ test_start_after_crash _______________________________

        @func
        def test_start_after_crash():
            zurl  = testzurl
            mntpt = testmntpt

    >       wc = start_and_crash_wcfs(zurl, mntpt)

    wcfs/wcfs_test.py:214:
    _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

    zurl = 'file:///srv/slapgrid/slappart77/tmp/testdb_fs.wYO8Fy/1.fs', mntpt = '/dev/shm/wcfs/306b2220fc0d6299336a7d2279556c07d48a868a'

       ...