CVE-2021-47382 (GCVE-0-2021-47382)
Vulnerability from cvelistv5
Published
2024-05-21 15:03
Modified
2026-05-23 15:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/qeth: fix deadlock during failing recovery Commit 0b9902c1fcc5 ("s390/qeth: fix deadlock during recovery") removed taking discipline_mutex inside qeth_do_reset(), fixing potential deadlocks. An error path was missed though, that still takes discipline_mutex and thus has the original deadlock potential. Intermittent deadlocks were seen when a qeth channel path is configured offline, causing a race between qeth_do_reset and ccwgroup_remove. Call qeth_set_offline() directly in the qeth_do_reset() error case and then a new variant of ccwgroup_set_offline(), without taking discipline_mutex.
References
Impacted products
Vendor Product Version
Linux Linux Version: b41b554c1ee75070a14c02a88496b1f231c7eacc
Version: b41b554c1ee75070a14c02a88496b1f231c7eacc
Version: af0c184ea106051e428b5a0b5f2dfd31cbc54c52
Version: 5.10.8   ≤
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