Description
In the Linux kernel, the following vulnerability has been resolved: nvme-fc: do not wait in vain when unloading module The module exit path has race between deleting all controllers and freeing 'left over IDs'. To prevent double free a synchronization between nvme_delete_ctrl and ida_destroy has been added by the initial commit. There is some logic around trying to prevent from hanging forever in wait_for_completion, though it does not handling all cases. E.g. blktests is able to reproduce the situation where the module unload hangs forever. If we completely rely on the cleanup code executed from the nvme_delete_ctrl path, all IDs will be freed eventually. This makes calling ida_destroy unnecessary. We only have to ensure that all nvme_delete_ctrl code has been executed before we leave nvme_fc_exit_module. This is done by flushing the nvme_delete_wq workqueue. While at it, remove the unused nvme_fc_wq workqueue too.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4c73cbdff1119d088ed16d63def59ad32b11b18f to < 4f2c95015ec2a1899161be6c0bdaecedd5a7bfb2affected4c73cbdff1119d088ed16d63def59ad32b11b18f to < 0bf567d6d9ffe09e059bbdfb4d07143cef42c75caffected4c73cbdff1119d088ed16d63def59ad32b11b18f to < 085195aa90a924c79e35569bcdad860d764a8e17affected4c73cbdff1119d088ed16d63def59ad32b11b18f to < baa6b7eb8c66486bd64608adc63fe03b30d3c0b9affected4c73cbdff1119d088ed16d63def59ad32b11b18f to < c0882c366418bf9c19e1ba7f270fe377a9bf5d67affected4c73cbdff1119d088ed16d63def59ad32b11b18f to < 70fbfc47a392b98e5f8dba70c6efc6839205c982affected
Linux Linux
Default version status: affected
5.3affected0 to < 5.3unaffected5.10.211 to ≤ 5.10.*unaffected5.15.150 to ≤ 5.15.*unaffected6.1.80 to ≤ 6.1.*unaffected6.6.19 to ≤ 6.6.*unaffected6.7.7 to ≤ 6.7.*unaffected6.8 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/4f2c95015ec2a1899161be6c0bdaecedd5a7bfb2 ↗
- https://git.kernel.org/stable/c/0bf567d6d9ffe09e059bbdfb4d07143cef42c75c ↗
- https://git.kernel.org/stable/c/085195aa90a924c79e35569bcdad860d764a8e17 ↗
- https://git.kernel.org/stable/c/baa6b7eb8c66486bd64608adc63fe03b30d3c0b9 ↗
- https://git.kernel.org/stable/c/c0882c366418bf9c19e1ba7f270fe377a9bf5d67 ↗
- https://git.kernel.org/stable/c/70fbfc47a392b98e5f8dba70c6efc6839205c982 ↗
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html ↗