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9523 Large alloc in zdb can cause trouble
16MB alloc in zdb_embedded_block() can cause cores in certain situations
(clang, gcc55).
OsX commit: ced236a5da
FreeBSD commit: https://svnweb.freebsd.org/base?view=revision&revision=326150
illumos/illumos-gate@03a4c2f4bf
Reviewed by: Igor Kozhukhov <igor@dilos.org>
Reviewed by: Andriy Gapon <avg@FreeBSD.org>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Dan McDonald <danmcd@joyent.com>
Author: Jorgen Lundman <lundman@lundman.net>
This is an update for r326150 (by avg), where this change comes from.
This commit is contained in:
commit
ac879e61ad
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=337179
@ -4950,19 +4950,18 @@ zdb_embedded_block(char *thing)
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words + 8, words + 9, words + 10, words + 11,
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words + 12, words + 13, words + 14, words + 15);
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if (err != 16) {
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(void) printf("invalid input format\n");
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(void) fprintf(stderr, "invalid input format\n");
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exit(1);
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}
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ASSERT3U(BPE_GET_LSIZE(&bp), <=, SPA_MAXBLOCKSIZE);
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buf = malloc(SPA_MAXBLOCKSIZE);
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if (buf == NULL) {
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(void) fprintf(stderr, "%s: failed to allocate %llu bytes\n",
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__func__, SPA_MAXBLOCKSIZE);
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(void) fprintf(stderr, "out of memory\n");
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exit(1);
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}
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err = decode_embedded_bp(&bp, buf, BPE_GET_LSIZE(&bp));
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if (err != 0) {
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(void) printf("decode failed: %u\n", err);
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(void) fprintf(stderr, "decode failed: %u\n", err);
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free(buf);
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exit(1);
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}
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