Andriy Gapon 04b7c6b337 MFV r316928: 7256 low probability race in zfs_get_data ... illumos/illumos-gate@0c94e1af67 0c94e1af67 https://www.illumos.org/issues/7256 error = dmu_sync(zio, lr->lr_common.lrc_txg, zfs_get_done, zgd); ASSERT(error || lr->lr_length <= zp->z_blksz); It's possible, although extremely rare, that the zfs_get_done() callback is executed before dmu_sync() returns. In that case the znode's range lock is dropped and the znode is unreferenced. Thus, the assertion can access some invalid or wrong data via the zp pointer. size variable caches the correct value of z_blksz and can be safely used here. Reviewed by: Matt Ahrens <mahrens@delphix.com> Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com> Approved by: Dan McDonald <danmcd@omniti.com> Author: Andriy Gapon <andriy.gapon@clusterhq.com> MFC after: 1 week		2017-05-26 10:31:05 +00:00
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common	MFV 316891	2017-04-21 19:53:52 +00:00
uts	MFV r316928: 7256 low probability race in zfs_get_data	2017-05-26 10:31:05 +00:00
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