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MFS: Race when reading node and taking read/write lock #4514

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Stebalien opened this issue Dec 21, 2017 · 0 comments
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MFS: Race when reading node and taking read/write lock #4514

Stebalien opened this issue Dec 21, 2017 · 0 comments

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@Stebalien
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We currently read the node (under the node lock), then take the read/write lock. However, a racing thread could also read the node, then take the write lock before us, update the node, and write it back. We'll then take the read (or write) lock and see the old node, not the new one.
Stebalien added a commit that referenced this issue Dec 21, 2017
@Stebalien
mfs: take the read/write lock *before* extracting the node.
b051842 
Otherwise, it could be exchanged out from under us!

fixes #4514

License: MIT
Signed-off-by: Steven Allen <[email protected]>
@Stebalien Stebalien mentioned this issue Dec 21, 2017
Closed
Stebalien added a commit that referenced this issue Dec 21, 2017
@Stebalien
mfs: take the read/write lock *before* extracting the node.
e68ef05 
Otherwise, it could be exchanged out from under us!

fixes #4514

License: MIT
Signed-off-by: Steven Allen <[email protected]>
@Stebalien Stebalien mentioned this issue Dec 21, 2017
Closed
Stebalien added a commit that referenced this issue Dec 21, 2017
@Stebalien
mfs: take the read/write lock *before* extracting the node.
a5ed5f3 
Otherwise, it could be exchanged out from under us!

fixes #4514

License: MIT
Signed-off-by: Steven Allen <[email protected]>
@schomatis schomatis mentioned this issue Mar 2, 2018
Closed
@schomatis schomatis mentioned this issue Dec 19, 2018
Closed
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@nitishm nitishm mentioned this issue Dec 31, 2018
Merged
@Stebalien Stebalien mentioned this issue Jan 8, 2019
Closed
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[WIP] MFS improvements ipfs/kubo
[WIP] MFS improvements
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@Stebalien