c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2024-12-25 02:49:32 +03:00
Code Issues Packages Projects Releases Wiki Activity

Fix memory leaks in dmu_send()/dmu_send_obj()

Browse Source 
If we encounter an EXDEV error when using the redacted snapshots
feature, the memory used by dspp.fromredactsnaps is leaked.

Clang's static analyzer caught this during an experiment in which I had
annotated various headers in an attempt to improve the results of static
analysis.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #13973
This commit is contained in:
Richard Yao 2022-10-18 19:03:33 -04:00 committed by GitHub
parent 84243acb91
commit eaaed26ffb
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
module/zfs/dmu_send.c
View File

@ -2714,6 +2714,10 @@ dmu_send_obj(const char *pool, uint64_t tosnap, uint64_t fromsnap,
dspp.numfromredactsnaps = NUM_SNAPS_NOT_REDACTED; dspp.numfromredactsnaps = NUM_SNAPS_NOT_REDACTED;
err = dmu_send_impl(&dspp); err = dmu_send_impl(&dspp);
} }
if (dspp.fromredactsnaps)
kmem_free(dspp.fromredactsnaps,
dspp.numfromredactsnaps * sizeof (uint64_t));
dsl_dataset_rele(dspp.to_ds, FTAG); dsl_dataset_rele(dspp.to_ds, FTAG);
return (err); return (err);
} }
@ -2922,6 +2926,10 @@ dmu_send(const char *tosnap, const char *fromsnap, boolean_t embedok,
/* dmu_send_impl will call dsl_pool_rele for us. */ /* dmu_send_impl will call dsl_pool_rele for us. */
err = dmu_send_impl(&dspp); err = dmu_send_impl(&dspp);
} else { } else {
if (dspp.fromredactsnaps)
kmem_free(dspp.fromredactsnaps,
dspp.numfromredactsnaps *
sizeof (uint64_t));
dsl_pool_rele(dspp.dp, FTAG); dsl_pool_rele(dspp.dp, FTAG);
} }
} else { } else {