[Bug 193277] Kernel crash after a few minutes/hours when aplications want to write something to disk.

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193277

--- Comment #4 from maciej.gabryszak at gmail.com ---
(kgdb) bt
#0  0xffffffff80c7f478 in cpustop_handler () at
/usr/src/sys/amd64/amd64/mp_machdep.c:1432
#1  0xffffffff80c7f43f in ipi_nmi_handler () at
/usr/src/sys/amd64/amd64/mp_machdep.c:1417
#2  0xffffffff80c8db52 in trap (frame=0xfffffe083a761f30) at
/usr/src/sys/amd64/amd64/trap.c:211
#3  0xffffffff80c757d3 in nmi_calltrap () at
/usr/src/sys/amd64/amd64/exception.S:505
#4  0xffffffff80c7f0f9 in smp_targeted_tlb_shootdown (mask={__bits = {0}},
vector=<value optimized out>, pmap=<value optimized out>, addr1=<value
optimized out>, 
    addr2=0) at /usr/src/sys/amd64/amd64/mp_machdep.c:1204
#5  0xffffffff80c80922 in pmap_invalidate_all (pmap=<value optimized out>) at
/usr/src/sys/amd64/amd64/pmap.c:1532
#6  0xffffffff80c815de in pmap_release (pmap=0xfffff800196ed838) at
/usr/src/sys/amd64/amd64/pmap.c:2511
#7  0xffffffff80b10532 in vmspace_exit (td=<value optimized out>) at
/usr/src/sys/vm/vm_map.c:330
#8  0xffffffff8087c6af in exit1 (td=0xfffff8035506d000, rv=<value optimized
out>) at /usr/src/sys/kern/kern_exit.c:321
#9  0xffffffff8087c04e in sys_sys_exit (td=<value optimized out>, uap=<value
optimized out>) at /usr/src/sys/kern/kern_exit.c:121
#10 0xffffffff80c8ef87 in amd64_syscall (td=0xfffff8035506d000, traced=0) at
subr_syscall.c:134
#11 0xffffffff80c7567b in Xfast_syscall () at
/usr/src/sys/amd64/amd64/exception.S:391
#12 0x0000000800db031a in ?? ()
Previous frame inner to this frame (corrupt stack?)

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