Fatal trap 9: general protection fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer = 0x20:0xffffffff80649f27
stack pointer = 0x28:0xffffff808a3f69d0
frame pointer = 0x28:0xffffff808a3f6a00
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 21 (syncer)
trap number = 9
panic: general protection fault
cpuid = 0
KDB: stack backtrace:
#0 0xffffffff805f556e at kdb_backtrace+0x5e
#1 0xffffffff805c3467 at panic+0x187
#2 0xffffffff808acd30 at trap_fatal+0x290
#3 0xffffffff808ad319 at trap+0x109
#4 0xffffffff808956e4 at calltrap+0x8
#5 0xffffffff806547bc at vfs_msync+0x13c
#6 0xffffffff80654a6a at sync_fsync+0x15a
#7 0xffffffff80652c1e at sync_vnode+0x15e
#8 0xffffffff80652f11 at sched_sync+0x1d1
#9 0xffffffff80599c58 at fork_exit+0x118