Re: -CURRENT fatal trap cause by cxgbe module

I'm not able to reproduce this.  I tried a test kernel built with
"device cxgbe" and had if_cxgbe_load="YES" in loader.conf and the system
came up just fine.

Regards,
Navdeep

On 3/1/20 8:07 PM, Dustin Marquess wrote:
> So I've been fighting with any current from the last month or so
> instantly crashing when I boot it.  I did notice that kernels in the
> various snapshot images were working, however, so I was trying to
> figure out why.  At first I thought it was because I had INVARIANTS
> and such disabled, but no, I finally figured it out.
> 
> I've had in my /boot/loader.conf for a while now:
> 
> if_cxgbe_load="YES"
> 
> I guess since the stock installer kernels don't have cxgbe enabled by
> default.  I added "device cxgbe" to my kernels a while ago.  Normally
> the kernel would give some error about the module already being loaded
> or something and just continue.  As of last month or so, however,
> instead it just crashes:
> 
> FreeBSD clang version 9.0.1 (git_at_github.com:llvm/llvm-project.git
> c1a0a213378a458fbea1a5c77b315c7dce08fd05) (based on LLVM 9.0.1)
> WARNING: WITNESS option enabled, expect reduced performance.
> kernel trap 12 with interrupts disabled
> 
> 
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address = 0x8
> fault code = supervisor read data, page not present
> instruction pointer = 0x20:0xffffffff80622931
> stack pointer         = 0x28:0xffffffff8241c9a0
> frame pointer         = 0x28:0xffffffff8241c9e0
> code segment = base 0x0, limit 0xfffff, type 0x1b
> = DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags = resume, IOPL = 0
> current process = 0 ()
> trap number = 12
> panic: page fault
> cpuid = 0
> time = 1
> 
> KDB: stack backtrace:
> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xffffffff8241c600
> vpanic() at vpanic+0x18a/frame 0xffffffff8241c660
> panic() at panic+0x43/frame 0xffffffff8241c6c0
> trap_fatal() at trap_fatal+0x386/frame 0xffffffff8241c720
> trap_pfault() at trap_pfault+0x99/frame 0xffffffff8241c7a0
> trap() at trap+0x4e9/frame 0xffffffff8241c8d0
> calltrap() at calltrap+0x8/frame 0xffffffff8241c8d0
> --- trap 0xc, rip = 0xffffffff80622931, rsp = 0xffffffff8241c9a0, rbp
> = 0xffffffff8241c9e0 ---
> malloc() at malloc+0x51/frame 0xffffffff8241c9e0
> sysctl_handle_string() at sysctl_handle_string+0x12d/frame 0xffffffff8241ca20
> sysctl_root_handler_locked() at sysctl_root_handler_locked+0xa2/frame
> 0xffffffff8241ca70
> sysctl_register_oid() at sysctl_register_oid+0x54c/frame 0xffffffff8241cd80
> sysctl_register_all() at sysctl_register_all+0x88/frame 0xffffffff8241cda0
> mi_startup() at mi_startup+0xf2/frame 0xffffffff8241cdf0
> btext() at btext+0x2c
> KDB: enter: panic
> [ thread pid 0 tid 0 ]
> Stopped at      kdb_enter+0x37: movq    $0,0xa5f4a6(%rip)
> db>
> 
> If I take the if_cxgbe_load out, however, it boots fine.
> 
> Thanks!
> -Dustin
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