https://bugzilla.kernel.org/show_bug.cgi?id=207855 Bug ID: 207855 Summary: arcconf host reset causes kernel panic -> driver crash? Product: IO/Storage Version: 2.5 Kernel Version: 5.6.13 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: SCSI Assignee: linux-scsi@xxxxxxxxxxxxxxx Reporter: janpieter.sollie@xxxxxxxxx Regression: No Created attachment 289227 --> https://bugzilla.kernel.org/attachment.cgi?id=289227&action=edit last dmesg captured When performing a arcconf operation (assign hot-spare) on a adaptec 72405 SAS controller, the program crashes with the error "segmentation fault", but apparently, the driver is not too happy with it either: it becomes unresponsive, and makes it impossible to access scsi devices on the SAS controller. Additional tricks to perform a PCI level reset ultimately lead to a kernel panic: linuxserver# echo 1 > /sys/bus/pci/devices/0000\:04\:00.0/reset (wait a minute) linuxserver# echo 1 > /sys/bus/pci/rescan (wait a minute) linuxserver# umount /data/* (where all SAS devices are mounted) (hangs indefinitely) linuxserver# echo auto > /sys/bus/pci/devices/0000\:04\:00.0/power/control linuxserver# echo "0000:04:00.0" > /sys/bus/pci/drivers/aacraid/unbind --PANIC-- I haven't been able to C/P the panic output yet, working on a kexec kernel or crash dump. The root directory is NOT one of the SAS devices, it is on a generic SATA controller -- You are receiving this mail because: You are the assignee for the bug.
