In the Linux kernel, the following vulnerability has been resolved:
scsi: megaraid_sas: Fix for a potential deadlock
This fixes a 'possible circular locking dependency detected' warning CPU0 CPU1 ---- ---- lock(&instance->resetmutex); lock(&shost->scanmutex); lock(&instance->resetmutex); lock(&shost->scanmutex);
Fix this by temporarily releasing the reset_mutex.