IPMI driver can be unloaded when being accessed by user space
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On Dell EMC PowerEdge systems with SLES 15 SP1 installed, this could lead to side effects such as the following message below being logged in iDRAC System Event Log when iSM (iDRAC Service Module) is running.
iSM uses /dev/ipmi device to communicate with iDRAC and the communication may break if ipmi_si driver is unloaded and following message is logged.
The watchdog timer expired
The issue is addressed in the following upstream commit :
ipmi: Don't allow device module unload when in use
This is resolved in SUSE Linux Enterprise Server 15 SP1 Maintenance Update Kernel version 4.12.14-197.34.1 and later (04 Mar 2020 - the Linux Kernel 560)
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- Document ID:000019602
- Creation Date: 06-Apr-2020
- Modified Date:06-Apr-2020
- SUSE Linux Enterprise Server
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