Issue #4116. Make zvol update volsize operation synchronous. #4371
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Make zvol update volsize operation synchronous. There is a race condition when new transaction group is added to dp->dp_dirty_datasets list by the zap_update in the zvol_update_volsize. Meanwhile, before these dirty data are synchronized, the receive process can cause that dmu_recv_end_sync is executed. Then finally dirty data are going to be synchronized but the synchronization ends with the NULL pointer dereference error.
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Thank you @behlendorf , fixed in ea7aa5b. |
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Issue #4116. Make zvol update volsize operation synchronous.
There is a race condition when new transaction group is added
to dp->dp_dirty_datasets list by the zap_update in the zvol_update_volsize.
Meanwhile, before these dirty data are synchronized, the receive process
can cause that dmu_recv_end_sync is executed. Then finally dirty data
are going to be synchronized but the synchronization ends with the NULL
pointer dereference error.