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ZFS send fails to dump objects larger than 128PiB

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When dumping objects larger than 128PiB it's possible for do_dump() to
miscalculate the FREE_RECORD offset due to an integer overflow
condition: this prevents the receiving end from correctly restoring
the dumped object.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #6760
This commit is contained in:
LOLi
2017-10-27 01:58:38 +02:00
committed by Brian Behlendorf
parent 88f9c9396b
commit ee45fbd894
6 changed files with 109 additions and 19 deletions
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module/zfs/bpobj.c
+2 -2
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@@ -261,7 +261,7 @@ bpobj_iterate_impl(bpobj_t *bpo, bpobj_itor_t func, void *arg, dmu_tx_t *tx,
}
if (free) {
VERIFY3U(0, ==, dmu_free_range(bpo->bpo_os, bpo->bpo_object,
(i + 1) * sizeof (blkptr_t), -1ULL, tx));
(i + 1) * sizeof (blkptr_t), DMU_OBJECT_END, tx));
}
if (err || !bpo->bpo_havesubobj || bpo->bpo_phys->bpo_subobjs == 0)
goto out;
@@ -339,7 +339,7 @@ bpobj_iterate_impl(bpobj_t *bpo, bpobj_itor_t func, void *arg, dmu_tx_t *tx,
if (free) {
VERIFY3U(0, ==, dmu_free_range(bpo->bpo_os,
bpo->bpo_phys->bpo_subobjs,
(i + 1) * sizeof (uint64_t), -1ULL, tx));
(i + 1) * sizeof (uint64_t), DMU_OBJECT_END, tx));
}
out: