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nfsd4: check for uninitialized slot

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This fixes an oops when a buggy client tries to use an initial seqid of
0 on a new slot, which we may misinterpret as a replay.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2012-02-13 16:56:19 -05:00
parent 73e79482b4
commit bf5c43c8f1
2 changed files with 8 additions and 1 deletions
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fs/nfsd/state.h
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@ -134,6 +134,7 @@ struct nfsd4_slot {
u16 sl_opcnt;
#define NFSD4_SLOT_INUSE (1 << 0)
#define NFSD4_SLOT_CACHETHIS (1 << 1)
#define NFSD4_SLOT_INITIALIZED (1 << 2)
u8 sl_flags;
char sl_data[];
};