diff options
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/blocklayout.c | 18 | ||||
| -rw-r--r-- | fs/nfsd/cache.h | 5 | ||||
| -rw-r--r-- | fs/nfsd/nfs4state.c | 5 | ||||
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 7 | ||||
| -rw-r--r-- | fs/nfsd/nfscache.c | 6 |
5 files changed, 27 insertions, 14 deletions
diff --git a/fs/nfsd/blocklayout.c b/fs/nfsd/blocklayout.c index a43dfedd69ec..77ccaad1399b 100644 --- a/fs/nfsd/blocklayout.c +++ b/fs/nfsd/blocklayout.c @@ -216,13 +216,21 @@ static int nfsd4_scsi_identify_device(struct block_device *bdev, struct request_queue *q = bdev->bd_disk->queue; struct request *rq; struct scsi_request *req; - size_t bufflen = 252, len, id_len; + /* + * The allocation length (passed in bytes 3 and 4 of the INQUIRY + * command descriptor block) specifies the number of bytes that have + * been allocated for the data-in buffer. + * 252 is the highest one-byte value that is a multiple of 4. + * 65532 is the highest two-byte value that is a multiple of 4. + */ + size_t bufflen = 252, maxlen = 65532, len, id_len; u8 *buf, *d, type, assoc; - int error; + int retries = 1, error; if (WARN_ON_ONCE(!blk_queue_scsi_passthrough(q))) return -EINVAL; +again: buf = kzalloc(bufflen, GFP_KERNEL); if (!buf) return -ENOMEM; @@ -255,6 +263,12 @@ static int nfsd4_scsi_identify_device(struct block_device *bdev, len = (buf[2] << 8) + buf[3] + 4; if (len > bufflen) { + if (len <= maxlen && retries--) { + blk_put_request(rq); + kfree(buf); + bufflen = len; + goto again; + } pr_err("pNFS: INQUIRY 0x83 response invalid (len = %zd)\n", len); goto out_put_request; diff --git a/fs/nfsd/cache.h b/fs/nfsd/cache.h index 046b3f048757..b7559c6f2b97 100644 --- a/fs/nfsd/cache.h +++ b/fs/nfsd/cache.h @@ -67,11 +67,6 @@ enum { RC_REPLBUFF, }; -/* - * If requests are retransmitted within this interval, they're dropped. - */ -#define RC_DELAY (HZ/5) - /* Cache entries expire after this time period */ #define RC_EXPIRE (120 * HZ) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index fc74d6f46bd5..3b40d1b57613 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -4378,8 +4378,11 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh, spin_unlock(&state_lock); if (status) - destroy_unhashed_deleg(dp); + goto out_unlock; + return dp; +out_unlock: + vfs_setlease(fp->fi_deleg_file, F_UNLCK, NULL, (void **)&dp); out_clnt_odstate: put_clnt_odstate(dp->dl_clnt_odstate); out_stid: diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 1d048dd95464..59d471025949 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1585,6 +1585,8 @@ nfsd4_decode_getdeviceinfo(struct nfsd4_compoundargs *argp, gdev->gd_maxcount = be32_to_cpup(p++); num = be32_to_cpup(p++); if (num) { + if (num > 1000) + goto xdr_error; READ_BUF(4 * num); gdev->gd_notify_types = be32_to_cpup(p++); for (i = 1; i < num; i++) { @@ -3651,7 +3653,8 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 nfserr = nfserr_resource; goto err_no_verf; } - maxcount = min_t(u32, readdir->rd_maxcount, INT_MAX); + maxcount = svc_max_payload(resp->rqstp); + maxcount = min_t(u32, readdir->rd_maxcount, maxcount); /* * Note the rfc defines rd_maxcount as the size of the * READDIR4resok structure, which includes the verifier above @@ -3665,7 +3668,7 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 /* RFC 3530 14.2.24 allows us to ignore dircount when it's 0: */ if (!readdir->rd_dircount) - readdir->rd_dircount = INT_MAX; + readdir->rd_dircount = svc_max_payload(resp->rqstp); readdir->xdr = xdr; readdir->rd_maxcount = maxcount; diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index 334f2ad60704..637f87c39183 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -394,7 +394,6 @@ nfsd_cache_lookup(struct svc_rqst *rqstp) __wsum csum; u32 hash = nfsd_cache_hash(xid); struct nfsd_drc_bucket *b = &drc_hashtbl[hash]; - unsigned long age; int type = rqstp->rq_cachetype; int rtn = RC_DOIT; @@ -461,12 +460,11 @@ nfsd_cache_lookup(struct svc_rqst *rqstp) found_entry: nfsdstats.rchits++; /* We found a matching entry which is either in progress or done. */ - age = jiffies - rp->c_timestamp; lru_put_end(b, rp); rtn = RC_DROPIT; - /* Request being processed or excessive rexmits */ - if (rp->c_state == RC_INPROG || age < RC_DELAY) + /* Request being processed */ + if (rp->c_state == RC_INPROG) goto out; /* From the hall of fame of impractical attacks: |