[Bug 247208] [mpt] VMWare virtualized LSI controller panics during hot-attach

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=247208

            Bug ID: 247208
           Summary: [mpt] VMWare virtualized LSI controller panics during
                    hot-attach
           Product: Base System
           Version: 11.3-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: allanjude at FreeBSD.org

Hot-attaching an LSI controller to a VMWare instance causes a panic on 2 out of
2 machines I tested on:


Jun 12 09:47:52 nfs-server-00 pcib11: Attention Button Pressed: Detaching in 5
seconds
Jun 12 09:47:52 nfs-server-00 pci4: <ACPI PCI bus> on pcib11
Jun 12 09:47:52 nfs-server-00 mpt1: <LSILogic SAS/SATA Adapter> at device 0.0
on pci4
Jun 12 09:47:52 nfs-server-00 mpt1: MPI Version=1.5.0.0
Jun 12 09:47:52 nfs-server-00 mpt1: cannot allocate 262144 bytes of request
memory
Jun 12 09:47:52 nfs-server-00 mpt1: mpt_dma_buf_alloc() failed!
Jun 12 09:47:52 nfs-server-00 mpt1: failed to enable port 0
Jun 12 09:49:26 nfs-server-00 syslog-ng[1045]: syslog-ng starting up;
version='3.23.1'
Jun 12 09:49:26 nfs-server-00 Fatal trap 12: page fault while in kernel mode
Jun 12 09:49:26 nfs-server-00 cpuid = 0; apic id = 00
Jun 12 09:49:26 nfs-server-00 fault virtual address = 0x10
Jun 12 09:49:26 nfs-server-00 fault code            = supervisor read data,
page not present
Jun 12 09:49:26 nfs-server-00 instruction pointer   = 0x20:0xffffffff80e67174
Jun 12 09:49:26 nfs-server-00 stack pointer         = 0x28:0xfffffe083e1a6940
Jun 12 09:49:26 nfs-server-00 frame pointer         = 0x28:0xfffffe083e1a6940
Jun 12 09:49:26 nfs-server-00 code segment          = base 0x0, limit 0xfffff,
type 0x1b
Jun 12 09:49:26 nfs-server-00                       = DPL 0, pres 1, long 1,
def32 0, gran 1
Jun 12 09:49:26 nfs-server-00 processor eflags      = interrupt enabled,
resume, IOPL = 0
Jun 12 09:49:26 nfs-server-00 current process               = 0 (thread taskq)
Jun 12 09:49:26 nfs-server-00 trap number           = 12
Jun 12 09:49:26 nfs-server-00 panic: page fault
Jun 12 09:49:26 nfs-server-00 cpuid = 0
Jun 12 09:49:26 nfs-server-00 KDB: stack backtrace:
Jun 12 09:49:26 nfs-server-00 db_trace_self_wrapper() at
db_trace_self_wrapper+0x2b/frame 0xfffffe083e1a65f0
Jun 12 09:49:26 nfs-server-00 vpanic() at vpanic+0x17e/frame 0xfffffe083e1a6650
Jun 12 09:49:26 nfs-server-00 panic() at panic+0x43/frame 0xfffffe083e1a66b0
Jun 12 09:49:26 nfs-server-00 trap_fatal() at trap_fatal+0x369/frame
0xfffffe083e1a6700
Jun 12 09:49:26 nfs-server-00 trap_pfault() at trap_pfault+0x49/frame
0xfffffe083e1a6760
Jun 12 09:49:26 nfs-server-00 trap() at trap+0x29d/frame 0xfffffe083e1a6870
Jun 12 09:49:26 nfs-server-00 calltrap() at calltrap+0x8/frame
0xfffffe083e1a6870
Jun 12 09:49:26 nfs-server-00 --- trap 0xc, rip = 0xffffffff80e67174, rsp =
0xfffffe083e1a6940, rbp = 0xfffffe083e1a6940 ---
Jun 12 09:49:26 nfs-server-00 vm_page_next() at vm_page_next+0x4/frame
0xfffffe083e1a6940
Jun 12 09:49:26 nfs-server-00 kmem_unback() at kmem_unback+0x88/frame
0xfffffe083e1a6980
Jun 12 09:49:26 nfs-server-00 kmem_free() at kmem_free+0x43/frame
0xfffffe083e1a69b0
Jun 12 09:49:26 nfs-server-00 mpt_core_detach() at mpt_core_detach+0xf9/frame
0xfffffe083e1a69d0
Jun 12 09:49:26 nfs-server-00 mpt_detach() at mpt_detach+0xd5/frame
0xfffffe083e1a69f0
Jun 12 09:49:26 nfs-server-00 mpt_pci_detach() at mpt_pci_detach+0x23/frame
0xfffffe083e1a6a10
Jun 12 09:49:26 nfs-server-00 device_detach() at device_detach+0x183/frame
0xfffffe083e1a6a50
Jun 12 09:49:26 nfs-server-00 bus_generic_detach() at
bus_generic_detach+0x48/frame 0xfffffe083e1a6a70
Jun 12 09:49:26 nfs-server-00 pci_detach() at pci_detach+0xe/frame
0xfffffe083e1a6a90
Jun 12 09:49:26 nfs-server-00 device_detach() at device_detach+0x183/frame
0xfffffe083e1a6ad0
Jun 12 09:49:26 nfs-server-00 device_delete_child() at
device_delete_child+0x15/frame 0xfffffe083e1a6af0
Jun 12 09:49:26 nfs-server-00 pcib_pcie_hotplug_task() at
pcib_pcie_hotplug_task+0x87/frame 0xfffffe083e1a6b20
Jun 12 09:49:26 nfs-server-00 taskqueue_run_locked() at
taskqueue_run_locked+0x185/frame 0xfffffe083e1a6b80
Jun 12 09:49:26 nfs-server-00 taskqueue_thread_loop() at
taskqueue_thread_loop+0xb8/frame 0xfffffe083e1a6bb0
Jun 12 09:49:26 nfs-server-00 fork_exit() at fork_exit+0x83/frame
0xfffffe083e1a6bf0

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