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Add checks for g_clone_bio() returning NULL, it will be possible RSN.

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Sponsored by:	DARPA & NAI Labs.
This commit is contained in:
Poul-Henning Kamp 2002-09-27 20:47:23 +00:00
parent 346cd5fe2d
commit beece77a2d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=104057
2 changed files with 18 additions and 1 deletions
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12
sys/geom/geom_aes.c
View File

@ -195,12 +195,20 @@ g_aes_start(struct bio *bp)
switch (bp->bio_cmd) {
case BIO_READ:
bp2 = g_clone_bio(bp);
if (bp2 == NULL) {
g_io_fail(bp, ENOMEM);
return;
}
bp2->bio_done = g_aes_read_done;
bp2->bio_offset += sc->sectorsize;
g_io_request(bp2, cp);
break;
case BIO_WRITE:
bp2 = g_clone_bio(bp);
if (bp2 == NULL) {
g_io_fail(bp, ENOMEM);
return;
}
bp2->bio_done = g_aes_write_done;
bp2->bio_offset += sc->sectorsize;
bp2->bio_data = g_malloc(bp->bio_length, M_WAITOK);
@ -226,6 +234,10 @@ g_aes_start(struct bio *bp)
if (g_handleattr_int(bp, "GEOM::sectorsize", sc->sectorsize))
return;
bp2 = g_clone_bio(bp);
if (bp2 == NULL) {
g_io_fail(bp, ENOMEM);
return;
}
bp2->bio_done = g_std_done;
bp2->bio_offset += sc->sectorsize;
g_io_request(bp2, cp);

7
sys/geom/geom_slice.c
View File

@ -72,7 +72,8 @@ g_slice_init(unsigned nslice, unsigned scsize)
gsp = g_malloc(sizeof *gsp, M_WAITOK | M_ZERO);
gsp->softc = g_malloc(scsize, M_WAITOK | M_ZERO);
gsp->slices = g_malloc(nslice * sizeof(struct g_slice), M_WAITOK | M_ZERO);
gsp->slices = g_malloc(nslice * sizeof(struct g_slice),
M_WAITOK | M_ZERO);
gsp->nslice = nslice;
return (gsp);
}
@ -148,6 +149,10 @@ g_slice_start(struct bio *bp)
return;
}
bp2 = g_clone_bio(bp);
if (bp2 == NULL) {
g_io_fail(bp, ENOMEM);
return;
}
if (bp2->bio_offset + bp2->bio_length > gsl->length)
bp2->bio_length = gsl->length - bp2->bio_offset;
bp2->bio_done = g_std_done;