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CIFS: Make accessing is_valid_oplock/dump_detail ops struct field safe

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Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Pavel Shilovsky
2012-05-28 15:50:10 +04:00
committed by Steve French
parent ea319d57d3
commit 7f0adb53bc
1 changed files with 4 additions and 2 deletions
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fs/cifs/connect.c
+4 -2
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@@ -1058,13 +1058,15 @@ cifs_demultiplex_thread(void *p)
if (mid_entry != NULL) { if (mid_entry != NULL) {
if (!mid_entry->multiRsp || mid_entry->multiEnd) if (!mid_entry->multiRsp || mid_entry->multiEnd)
mid_entry->callback(mid_entry); mid_entry->callback(mid_entry);
} else if (!server->ops->is_oplock_break(buf, server)) { } else if (!server->ops->is_oplock_break ||
!server->ops->is_oplock_break(buf, server)) {
cERROR(1, "No task to wake, unknown frame received! " cERROR(1, "No task to wake, unknown frame received! "
"NumMids %d", atomic_read(&midCount)); "NumMids %d", atomic_read(&midCount));
cifs_dump_mem("Received Data is: ", buf, cifs_dump_mem("Received Data is: ", buf,
HEADER_SIZE(server)); HEADER_SIZE(server));
#ifdef CONFIG_CIFS_DEBUG2 #ifdef CONFIG_CIFS_DEBUG2
server->ops->dump_detail(buf); if (server->ops->dump_detail)
server->ops->dump_detail(buf);
cifs_dump_mids(server); cifs_dump_mids(server);
#endif /* CIFS_DEBUG2 */ #endif /* CIFS_DEBUG2 */