The system with CCISS RAID-controller locks up after issuing ioctl with cciss_compat_ioctl() / cciss_ioctl() calls
Issue
The system with CCISS RAID-controller locks up after issuing ioctl to the controller with cciss_compat_ioctl() / cciss_ioctl() calls. The following call trace is present in the crash dump:
PID: 3745 TASK: ffff8800952d0830 CPU: 0 COMMAND: "cmaidad"
#0 [ffff880083f93b78] schedule at ffffffff80262d89
#1 [ffff880083f93c60] wait_for_completion at ffffffff80262fd7
#2 [ffff880083f93cb0] cciss_ioctl at ffffffff880bc97f [cciss]
#3 [ffff880083f93dc0] do_ioctl at ffffffff880bcec0 [cciss]
#4 [ffff880083f93de0] cciss_compat_ioctl at ffffffff880bd101 [cciss]
#5 [ffff880083f93ef0] compat_blkdev_ioctl at ffffffff8033f3a3
#6 [ffff880083f93f20] compat_sys_ioctl at ffffffff802f3149
Environment
Red Hat Enterprise Linux 5
CCISS RAID controller
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