The IXL driver fails to load due to an assertion on an unlocked mutex. The attach routine doesn't take the mutex before calling some initialisations functions. There is the backtrace: KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2e/frame 0xfffffe0f7af339f0 kdb_backtrace() at kdb_backtrace+0x52/frame 0xfffffe0f7af33a10 vpanic() at vpanic+0x1df/frame 0xfffffe0f7af33a80 kproc_shutdown() at kproc_shutdown/frame 0xfffffe0f7af33ae0 __mtx_assert() at __mtx_assert+0x102/frame 0xfffffe0f7af33b50 ixl_add_hw_filters() at ixl_add_hw_filters+0x63/frame 0xfffffe0f7af33bb0 ixl_add_filter() at ixl_add_filter+0x1a2/frame 0xfffffe0f7af33c00 ixl_init_filters() at ixl_init_filters+0x44/frame 0xfffffe0f7af33c20 ixl_attach() at ixl_attach+0xb48/frame 0xfffffe0f7af33d60 DEVICE_ATTACH() at DEVICE_ATTACH+0x87/frame 0xfffffe0f7af33da0 device_attach() at device_attach+0xbc/frame 0xfffffe0f7af33df0 device_probe_and_attach() at device_probe_and_attach+0x74/frame 0xfffffe0f7af33e20 pci_driver_added() at pci_driver_added+0x105/frame 0xfffffe0f7af33e70 BUS_DRIVER_ADDED() at BUS_DRIVER_ADDED+0x8f/frame 0xfffffe0f7af33eb0 devclass_driver_added() at devclass_driver_added+0x7a/frame 0xfffffe0f7af33ee0 devclass_add_driver() at devclass_add_driver+0x172/frame 0xfffffe0f7af33f30 driver_module_handler() at driver_module_handler+0xc9/frame 0xfffffe0f7af33f90 module_register_init() at module_register_init+0xc0/frame 0xfffffe0f7af33ff0 linker_file_sysinit() at linker_file_sysinit+0x1b4/frame 0xfffffe0f7af34050 linker_load_file() at linker_load_file+0x14d/frame 0xfffffe0f7af340c0 linker_load_module() at linker_load_module+0x191/frame 0xfffffe0f7af34130 kern_kldload() at kern_kldload+0xf9/frame 0xfffffe0f7af34190 sys_kldload() at sys_kldload+0x7b/frame 0xfffffe0f7af341c0 syscallenter() at syscallenter+0x4af/frame 0xfffffe0f7af34230 amd64_syscall() at amd64_syscall+0x1f/frame 0xfffffe0f7af34330 Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe0f7af34330 --- syscall (304, FreeBSD ELF64, sys_kldload), rip = 0x80086673a, rsp = 0x7fffffffe798, rbp = 0x7fffffffecb0 --- KDB: enter: panic
How are you making this happen? (kldload? Just using GENERIC?) What version of FreeBSD are you using? (12-CURRENT, 12-ALPHA? What svn revision?)
I'm sorry, I forget that we manually upgrade our kernel module to the Intel version 1.9.12 on a FreeBSD 11.2. So, I close this ticket.