Re: KASSERT umap->refcount != 0 failed (sys/uvm/uvm_bio.c:248)

[Mindaugas Rasiukevicius <rmind%netbsd.org@localhost>]

Hello,

Nicolas Joly <njoly%pasteur.fr@localhost> wrote:
> While stress testing the network interfaces on a new -current
> NetBSD/amd64 server which has 64GB of ram, the following KASSERT
> fired:
> 
> panic: kernel diagnostic assertion "umap->refcount != 0" failed: file
> "/local/src/NetBSD/src/sys/uvm/uvm_bio.c", line 248 fatal breakpoint trap
> in supervisor mode trap type 1 code 0 rip ffffffff80229d65 cs 8 rflags 246
> cr2  ffff8000d1c21000 cpl 0 rsp ffff8000d2c87430 Stopped in pid 496.1 (dd)
> at    netbsd:breakpoint+0x5:  leave db{0}> bt
> breakpoint() at netbsd:breakpoint+0x5
> panic() at netbsd:panic+0x2ba
> kern_assert() at netbsd:kern_assert+0x2d
> ubc_fault() at netbsd:ubc_fault+0x4c9
> uvm_fault_internal() at netbsd:uvm_fault_internal+0x469
> trap() at netbsd:trap+0x702
> --- trap (number 0) ---

Weird.  What other CPUs do?

-- 
Mindaugas