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Set OBJ_NOSPLIT on the ksyms(4) VM object.

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The object does not provide anonymous memory.

Reported by:	kib
Reviewed by:	kib
MFC after:	3 days
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D22123
This commit is contained in:
Mark Johnston 2019-10-23 16:53:37 +00:00
parent 65366903c3
commit 87382b222f
1 changed files with 4 additions and 1 deletions
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5
sys/dev/ksyms/ksyms.c
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@ -404,6 +404,7 @@ ksyms_open(struct cdev *dev, int flags, int fmt __unused, struct thread *td)
{ {
struct tsizes ts; struct tsizes ts;
struct ksyms_softc *sc; struct ksyms_softc *sc;
vm_object_t object;
vm_size_t elfsz; vm_size_t elfsz;
int error, try; int error, try;
@ -441,8 +442,10 @@ ksyms_open(struct cdev *dev, int flags, int fmt __unused, struct thread *td)
ksyms_size_calc(&ts); ksyms_size_calc(&ts);
elfsz = sizeof(struct ksyms_hdr) + ts.ts_symsz + ts.ts_strsz; elfsz = sizeof(struct ksyms_hdr) + ts.ts_symsz + ts.ts_strsz;
sc->sc_obj = vm_object_allocate(OBJT_DEFAULT, object = vm_object_allocate(OBJT_DEFAULT,
OFF_TO_IDX(round_page(elfsz))); OFF_TO_IDX(round_page(elfsz)));
vm_object_set_flag(object, OBJ_NOSPLIT);
sc->sc_obj = object;
sc->sc_objsz = elfsz; sc->sc_objsz = elfsz;
error = ksyms_snapshot(sc, &ts); error = ksyms_snapshot(sc, &ts);