liyinshu has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/542082 ) Change subject: Fix crash bcz slot->cached_result is null for replay request ...................................................................... Fix crash bcz slot->cached_result is null for replay request Reproduce crash as follows: thread1: receive a replay request, and found slot->cached_result not null, assign slot to data->slot at nfs4_op_sequence.c:131, and unlock the slot->lock. thread2: receive a normal request, got slot->lock and release_slot(slot), so slot->cached_result was set null. thread1: in complete_op, assign *status with data->slot->cached_result->status, but data->slot->cached_result is null, so crash happens. To fix crash, add pointer cached_result in compound_data, and save slot->cached_result when found request replayed, in complete_op, get cached_result from compound_data. Even though, other thread release slot and set slot->cached_result with null, we can still get cacehd_result from compound_data. Change-Id: I92f472edc773bf357b35da1a1805e2d59c95a286 Signed-off-by: liyinshu <liyinshu(a)bytedance.com&gt; --- M src/Protocols/NFS/nfs4_Compound.c M src/Protocols/NFS/nfs4_op_sequence.c M src/include/nfs_proto_data.h 3 files changed, 41 insertions(+), 2 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/82/542082/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/542082 To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: I92f472edc773bf357b35da1a1805e2d59c95a286 Gerrit-Change-Number: 542082 Gerrit-PatchSet: 1 Gerrit-Owner: liyinshu <liyinshu(a)bytedance.com&gt; Gerrit-MessageType: newchange