nvme-multipath: fix lockdep WARN due to partition scan work
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.5%
exploitation probability
0.5%top 57% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
nvme-multipath: fix lockdep WARN due to partition scan work
Blktests test cases nvme/014, 057 and 058 fail occasionally due to a
lockdep WARN. As reported in the Closes tag URL, the WARN indicates that
a deadlock can happen due to the dependency among disk->open_mutex,
kblockd workqueue completion and partition_scan_work completion.
To avoid the lockdep WARN and the potential deadlock, cut the dependency
by running the partition_scan_work not by kblockd workqueue but by
nvme_wq.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/6d87cd5335784351280f82c47cc8a657271929c3https://git.kernel.org/stable/c/89456dab7ba5ab63d60945440926673a3205e829https://git.kernel.org/stable/c/b03eb63288a8ffe3adfb34e68309c8e2edb06d0bhttps://git.kernel.org/stable/c/e2a897ad5f538d314955c747a0a2edb184fcdecdhttps://git.kernel.org/stable/c/ef4ab2a8abe554379e10303ae86f7c501336ba0d