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| author | Ilya Dryomov <idryomov@gmail.com> | 2015-09-14 15:01:05 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2015-09-17 19:14:15 +0200 |
| commit | 7f61f545657281a3a1b0faf68993165ebdecc51b (patch) | |
| tree | d405e22c3eaeb3cb6071ca0fa46b4e8c7c909350 /include | |
| parent | Linux 4.3-rc1 (diff) | |
| download | linux-7f61f545657281a3a1b0faf68993165ebdecc51b.tar.xz linux-7f61f545657281a3a1b0faf68993165ebdecc51b.zip | |
libceph: don't access invalid memory in keepalive2 path
This
struct ceph_timespec ceph_ts;
...
con_out_kvec_add(con, sizeof(ceph_ts), &ceph_ts);
wraps ceph_ts into a kvec and adds it to con->out_kvec array, yet
ceph_ts becomes invalid on return from prepare_write_keepalive(). As
a result, we send out bogus keepalive2 stamps. Fix this by encoding
into a ceph_timespec member, similar to how acks are read and written.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ceph/messenger.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h index 7e1252e97a30..b2371d9b51fa 100644 --- a/include/linux/ceph/messenger.h +++ b/include/linux/ceph/messenger.h @@ -238,6 +238,8 @@ struct ceph_connection { bool out_kvec_is_msg; /* kvec refers to out_msg */ int out_more; /* there is more data after the kvecs */ __le64 out_temp_ack; /* for writing an ack */ + struct ceph_timespec out_temp_keepalive2; /* for writing keepalive2 + stamp */ /* message in temps */ struct ceph_msg_header in_hdr; @@ -248,7 +250,7 @@ struct ceph_connection { int in_base_pos; /* bytes read */ __le64 in_temp_ack; /* for reading an ack */ - struct timespec last_keepalive_ack; + struct timespec last_keepalive_ack; /* keepalive2 ack stamp */ struct delayed_work work; /* send|recv work */ unsigned long delay; /* current delay interval */ |