From cede185b1ba3118e1912385db4812a37d9e9b205 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 6 May 2019 09:38:46 -0400 Subject: libceph: fix unaligned accesses in ceph_entity_addr handling GCC9 is throwing a lot of warnings about unaligned access. This patch fixes some of them by changing most of the sockaddr handling functions to take a pointer to struct ceph_entity_addr instead of struct sockaddr_storage. The lower functions can then make copies or do unaligned accesses as needed. Signed-off-by: Jeff Layton Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov --- net/ceph/messenger.c | 77 +++++++++++++++++++++++++--------------------------- 1 file changed, 37 insertions(+), 40 deletions(-) (limited to 'net') diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index 3083988ce729..3e0cc9808ae4 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -449,7 +449,7 @@ static void set_sock_callbacks(struct socket *sock, */ static int ceph_tcp_connect(struct ceph_connection *con) { - struct sockaddr_storage *paddr = &con->peer_addr.in_addr; + struct sockaddr_storage ss = con->peer_addr.in_addr; /* align */ struct socket *sock; unsigned int noio_flag; int ret; @@ -458,7 +458,7 @@ static int ceph_tcp_connect(struct ceph_connection *con) /* sock_create_kern() allocates with GFP_KERNEL */ noio_flag = memalloc_noio_save(); - ret = sock_create_kern(read_pnet(&con->msgr->net), paddr->ss_family, + ret = sock_create_kern(read_pnet(&con->msgr->net), ss.ss_family, SOCK_STREAM, IPPROTO_TCP, &sock); memalloc_noio_restore(noio_flag); if (ret) @@ -474,7 +474,7 @@ static int ceph_tcp_connect(struct ceph_connection *con) dout("connect %s\n", ceph_pr_addr(&con->peer_addr.in_addr)); con_sock_state_connecting(con); - ret = sock->ops->connect(sock, (struct sockaddr *)paddr, sizeof(*paddr), + ret = sock->ops->connect(sock, (struct sockaddr *)&ss, sizeof(ss), O_NONBLOCK); if (ret == -EINPROGRESS) { dout("connect %s EINPROGRESS sk_state = %u\n", @@ -1795,14 +1795,15 @@ static int verify_hello(struct ceph_connection *con) return 0; } -static bool addr_is_blank(struct sockaddr_storage *ss) +static bool addr_is_blank(struct ceph_entity_addr *addr) { - struct in_addr *addr = &((struct sockaddr_in *)ss)->sin_addr; - struct in6_addr *addr6 = &((struct sockaddr_in6 *)ss)->sin6_addr; + struct sockaddr_storage ss = addr->in_addr; /* align */ + struct in_addr *addr4 = &((struct sockaddr_in *)&ss)->sin_addr; + struct in6_addr *addr6 = &((struct sockaddr_in6 *)&ss)->sin6_addr; - switch (ss->ss_family) { + switch (ss.ss_family) { case AF_INET: - return addr->s_addr == htonl(INADDR_ANY); + return addr4->s_addr == htonl(INADDR_ANY); case AF_INET6: return ipv6_addr_any(addr6); default: @@ -1810,25 +1811,25 @@ static bool addr_is_blank(struct sockaddr_storage *ss) } } -static int addr_port(struct sockaddr_storage *ss) +static int addr_port(struct ceph_entity_addr *addr) { - switch (ss->ss_family) { + switch (get_unaligned(&addr->in_addr.ss_family)) { case AF_INET: - return ntohs(((struct sockaddr_in *)ss)->sin_port); + return ntohs(get_unaligned(&((struct sockaddr_in *)&addr->in_addr)->sin_port)); case AF_INET6: - return ntohs(((struct sockaddr_in6 *)ss)->sin6_port); + return ntohs(get_unaligned(&((struct sockaddr_in6 *)&addr->in_addr)->sin6_port)); } return 0; } -static void addr_set_port(struct sockaddr_storage *ss, int p) +static void addr_set_port(struct ceph_entity_addr *addr, int p) { - switch (ss->ss_family) { + switch (get_unaligned(&addr->in_addr.ss_family)) { case AF_INET: - ((struct sockaddr_in *)ss)->sin_port = htons(p); + put_unaligned(htons(p), &((struct sockaddr_in *)&addr->in_addr)->sin_port); break; case AF_INET6: - ((struct sockaddr_in6 *)ss)->sin6_port = htons(p); + put_unaligned(htons(p), &((struct sockaddr_in6 *)&addr->in_addr)->sin6_port); break; } } @@ -1836,21 +1837,18 @@ static void addr_set_port(struct sockaddr_storage *ss, int p) /* * Unlike other *_pton function semantics, zero indicates success. */ -static int ceph_pton(const char *str, size_t len, struct sockaddr_storage *ss, +static int ceph_pton(const char *str, size_t len, struct ceph_entity_addr *addr, char delim, const char **ipend) { - struct sockaddr_in *in4 = (struct sockaddr_in *) ss; - struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) ss; - - memset(ss, 0, sizeof(*ss)); + memset(&addr->in_addr, 0, sizeof(addr->in_addr)); - if (in4_pton(str, len, (u8 *)&in4->sin_addr.s_addr, delim, ipend)) { - ss->ss_family = AF_INET; + if (in4_pton(str, len, (u8 *)&((struct sockaddr_in *)&addr->in_addr)->sin_addr.s_addr, delim, ipend)) { + put_unaligned(AF_INET, &addr->in_addr.ss_family); return 0; } - if (in6_pton(str, len, (u8 *)&in6->sin6_addr.s6_addr, delim, ipend)) { - ss->ss_family = AF_INET6; + if (in6_pton(str, len, (u8 *)&((struct sockaddr_in6 *)&addr->in_addr)->sin6_addr.s6_addr, delim, ipend)) { + put_unaligned(AF_INET6, &addr->in_addr.ss_family); return 0; } @@ -1862,7 +1860,7 @@ static int ceph_pton(const char *str, size_t len, struct sockaddr_storage *ss, */ #ifdef CONFIG_CEPH_LIB_USE_DNS_RESOLVER static int ceph_dns_resolve_name(const char *name, size_t namelen, - struct sockaddr_storage *ss, char delim, const char **ipend) + struct ceph_entity_addr *addr, char delim, const char **ipend) { const char *end, *delim_p; char *colon_p, *ip_addr = NULL; @@ -1891,7 +1889,7 @@ static int ceph_dns_resolve_name(const char *name, size_t namelen, /* do dns_resolve upcall */ ip_len = dns_query(NULL, name, end - name, NULL, &ip_addr, NULL); if (ip_len > 0) - ret = ceph_pton(ip_addr, ip_len, ss, -1, NULL); + ret = ceph_pton(ip_addr, ip_len, addr, -1, NULL); else ret = -ESRCH; @@ -1900,13 +1898,13 @@ static int ceph_dns_resolve_name(const char *name, size_t namelen, *ipend = end; pr_info("resolve '%.*s' (ret=%d): %s\n", (int)(end - name), name, - ret, ret ? "failed" : ceph_pr_addr(ss)); + ret, ret ? "failed" : ceph_pr_addr(&addr->in_addr)); return ret; } #else static inline int ceph_dns_resolve_name(const char *name, size_t namelen, - struct sockaddr_storage *ss, char delim, const char **ipend) + struct ceph_entity_addr *addr, char delim, const char **ipend) { return -EINVAL; } @@ -1917,13 +1915,13 @@ static inline int ceph_dns_resolve_name(const char *name, size_t namelen, * then try to extract a hostname to resolve using userspace DNS upcall. */ static int ceph_parse_server_name(const char *name, size_t namelen, - struct sockaddr_storage *ss, char delim, const char **ipend) + struct ceph_entity_addr *addr, char delim, const char **ipend) { int ret; - ret = ceph_pton(name, namelen, ss, delim, ipend); + ret = ceph_pton(name, namelen, addr, delim, ipend); if (ret) - ret = ceph_dns_resolve_name(name, namelen, ss, delim, ipend); + ret = ceph_dns_resolve_name(name, namelen, addr, delim, ipend); return ret; } @@ -1942,7 +1940,6 @@ int ceph_parse_ips(const char *c, const char *end, dout("parse_ips on '%.*s'\n", (int)(end-c), c); for (i = 0; i < max_count; i++) { const char *ipend; - struct sockaddr_storage *ss = &addr[i].in_addr; int port; char delim = ','; @@ -1951,7 +1948,7 @@ int ceph_parse_ips(const char *c, const char *end, p++; } - ret = ceph_parse_server_name(p, end - p, ss, delim, &ipend); + ret = ceph_parse_server_name(p, end - p, &addr[i], delim, &ipend); if (ret) goto bad; ret = -EINVAL; @@ -1982,9 +1979,9 @@ int ceph_parse_ips(const char *c, const char *end, port = CEPH_MON_PORT; } - addr_set_port(ss, port); + addr_set_port(&addr[i], port); - dout("parse_ips got %s\n", ceph_pr_addr(ss)); + dout("parse_ips got %s\n", ceph_pr_addr(&addr[i].in_addr)); if (p == end) break; @@ -2023,7 +2020,7 @@ static int process_banner(struct ceph_connection *con) */ if (memcmp(&con->peer_addr, &con->actual_peer_addr, sizeof(con->peer_addr)) != 0 && - !(addr_is_blank(&con->actual_peer_addr.in_addr) && + !(addr_is_blank(&con->actual_peer_addr) && con->actual_peer_addr.nonce == con->peer_addr.nonce)) { pr_warn("wrong peer, want %s/%d, got %s/%d\n", ceph_pr_addr(&con->peer_addr.in_addr), @@ -2037,13 +2034,13 @@ static int process_banner(struct ceph_connection *con) /* * did we learn our address? */ - if (addr_is_blank(&con->msgr->inst.addr.in_addr)) { - int port = addr_port(&con->msgr->inst.addr.in_addr); + if (addr_is_blank(&con->msgr->inst.addr)) { + int port = addr_port(&con->msgr->inst.addr); memcpy(&con->msgr->inst.addr.in_addr, &con->peer_addr_for_me.in_addr, sizeof(con->peer_addr_for_me.in_addr)); - addr_set_port(&con->msgr->inst.addr.in_addr, port); + addr_set_port(&con->msgr->inst.addr, port); encode_my_addr(con->msgr); dout("process_banner learned my addr is %s\n", ceph_pr_addr(&con->msgr->inst.addr.in_addr)); -- cgit From b726ec972cf2122137fbc47847b4fcc7b3bc2801 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 6 May 2019 09:38:47 -0400 Subject: libceph: make ceph_pr_addr take an struct ceph_entity_addr pointer GCC9 is throwing a lot of warnings about unaligned accesses by callers of ceph_pr_addr. All of the current callers are passing a pointer to the sockaddr inside struct ceph_entity_addr. Fix it to take a pointer to a struct ceph_entity_addr instead, and then have the function make a copy of the sockaddr before printing it. Signed-off-by: Jeff Layton Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov --- net/ceph/cls_lock_client.c | 2 +- net/ceph/debugfs.c | 4 ++-- net/ceph/messenger.c | 48 +++++++++++++++++++++++----------------------- net/ceph/mon_client.c | 6 +++--- net/ceph/osd_client.c | 2 +- 5 files changed, 31 insertions(+), 31 deletions(-) (limited to 'net') diff --git a/net/ceph/cls_lock_client.c b/net/ceph/cls_lock_client.c index 2105a6eaa66c..4cc28541281b 100644 --- a/net/ceph/cls_lock_client.c +++ b/net/ceph/cls_lock_client.c @@ -271,7 +271,7 @@ static int decode_locker(void **p, void *end, struct ceph_locker *locker) dout("%s %s%llu cookie %s addr %s\n", __func__, ENTITY_NAME(locker->id.name), locker->id.cookie, - ceph_pr_addr(&locker->info.addr.in_addr)); + ceph_pr_addr(&locker->info.addr)); return 0; } diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c index 46f65709a6ff..63aef9915f75 100644 --- a/net/ceph/debugfs.c +++ b/net/ceph/debugfs.c @@ -46,7 +46,7 @@ static int monmap_show(struct seq_file *s, void *p) seq_printf(s, "\t%s%lld\t%s\n", ENTITY_NAME(inst->name), - ceph_pr_addr(&inst->addr.in_addr)); + ceph_pr_addr(&inst->addr)); } return 0; } @@ -82,7 +82,7 @@ static int osdmap_show(struct seq_file *s, void *p) char sb[64]; seq_printf(s, "osd%d\t%s\t%3d%%\t(%s)\t%3d%%\n", - i, ceph_pr_addr(&addr->in_addr), + i, ceph_pr_addr(addr), ((map->osd_weight[i]*100) >> 16), ceph_osdmap_state_str(sb, sizeof(sb), state), ((ceph_get_primary_affinity(map, i)*100) >> 16)); diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index 3e0cc9808ae4..3ee380758ddd 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -186,17 +186,18 @@ static atomic_t addr_str_seq = ATOMIC_INIT(0); static struct page *zero_page; /* used in certain error cases */ -const char *ceph_pr_addr(const struct sockaddr_storage *ss) +const char *ceph_pr_addr(const struct ceph_entity_addr *addr) { int i; char *s; - struct sockaddr_in *in4 = (struct sockaddr_in *) ss; - struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) ss; + struct sockaddr_storage ss = addr->in_addr; /* align */ + struct sockaddr_in *in4 = (struct sockaddr_in *)&ss; + struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)&ss; i = atomic_inc_return(&addr_str_seq) & ADDR_STR_COUNT_MASK; s = addr_str[i]; - switch (ss->ss_family) { + switch (ss.ss_family) { case AF_INET: snprintf(s, MAX_ADDR_STR_LEN, "%pI4:%hu", &in4->sin_addr, ntohs(in4->sin_port)); @@ -209,7 +210,7 @@ const char *ceph_pr_addr(const struct sockaddr_storage *ss) default: snprintf(s, MAX_ADDR_STR_LEN, "(unknown sockaddr family %hu)", - ss->ss_family); + ss.ss_family); } return s; @@ -471,18 +472,18 @@ static int ceph_tcp_connect(struct ceph_connection *con) set_sock_callbacks(sock, con); - dout("connect %s\n", ceph_pr_addr(&con->peer_addr.in_addr)); + dout("connect %s\n", ceph_pr_addr(&con->peer_addr)); con_sock_state_connecting(con); ret = sock->ops->connect(sock, (struct sockaddr *)&ss, sizeof(ss), O_NONBLOCK); if (ret == -EINPROGRESS) { dout("connect %s EINPROGRESS sk_state = %u\n", - ceph_pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr), sock->sk->sk_state); } else if (ret < 0) { pr_err("connect %s error %d\n", - ceph_pr_addr(&con->peer_addr.in_addr), ret); + ceph_pr_addr(&con->peer_addr), ret); sock_release(sock); return ret; } @@ -669,8 +670,7 @@ static void reset_connection(struct ceph_connection *con) void ceph_con_close(struct ceph_connection *con) { mutex_lock(&con->mutex); - dout("con_close %p peer %s\n", con, - ceph_pr_addr(&con->peer_addr.in_addr)); + dout("con_close %p peer %s\n", con, ceph_pr_addr(&con->peer_addr)); con->state = CON_STATE_CLOSED; con_flag_clear(con, CON_FLAG_LOSSYTX); /* so we retry next connect */ @@ -694,7 +694,7 @@ void ceph_con_open(struct ceph_connection *con, struct ceph_entity_addr *addr) { mutex_lock(&con->mutex); - dout("con_open %p %s\n", con, ceph_pr_addr(&addr->in_addr)); + dout("con_open %p %s\n", con, ceph_pr_addr(addr)); WARN_ON(con->state != CON_STATE_CLOSED); con->state = CON_STATE_PREOPEN; @@ -1788,7 +1788,7 @@ static int verify_hello(struct ceph_connection *con) { if (memcmp(con->in_banner, CEPH_BANNER, strlen(CEPH_BANNER))) { pr_err("connect to %s got bad banner\n", - ceph_pr_addr(&con->peer_addr.in_addr)); + ceph_pr_addr(&con->peer_addr)); con->error_msg = "protocol error, bad banner"; return -1; } @@ -1898,7 +1898,7 @@ static int ceph_dns_resolve_name(const char *name, size_t namelen, *ipend = end; pr_info("resolve '%.*s' (ret=%d): %s\n", (int)(end - name), name, - ret, ret ? "failed" : ceph_pr_addr(&addr->in_addr)); + ret, ret ? "failed" : ceph_pr_addr(addr)); return ret; } @@ -1981,7 +1981,7 @@ int ceph_parse_ips(const char *c, const char *end, addr_set_port(&addr[i], port); - dout("parse_ips got %s\n", ceph_pr_addr(&addr[i].in_addr)); + dout("parse_ips got %s\n", ceph_pr_addr(&addr[i])); if (p == end) break; @@ -2023,9 +2023,9 @@ static int process_banner(struct ceph_connection *con) !(addr_is_blank(&con->actual_peer_addr) && con->actual_peer_addr.nonce == con->peer_addr.nonce)) { pr_warn("wrong peer, want %s/%d, got %s/%d\n", - ceph_pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr), (int)le32_to_cpu(con->peer_addr.nonce), - ceph_pr_addr(&con->actual_peer_addr.in_addr), + ceph_pr_addr(&con->actual_peer_addr), (int)le32_to_cpu(con->actual_peer_addr.nonce)); con->error_msg = "wrong peer at address"; return -1; @@ -2043,7 +2043,7 @@ static int process_banner(struct ceph_connection *con) addr_set_port(&con->msgr->inst.addr, port); encode_my_addr(con->msgr); dout("process_banner learned my addr is %s\n", - ceph_pr_addr(&con->msgr->inst.addr.in_addr)); + ceph_pr_addr(&con->msgr->inst.addr)); } return 0; @@ -2094,7 +2094,7 @@ static int process_connect(struct ceph_connection *con) pr_err("%s%lld %s feature set mismatch," " my %llx < server's %llx, missing %llx\n", ENTITY_NAME(con->peer_name), - ceph_pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr), sup_feat, server_feat, server_feat & ~sup_feat); con->error_msg = "missing required protocol features"; reset_connection(con); @@ -2104,7 +2104,7 @@ static int process_connect(struct ceph_connection *con) pr_err("%s%lld %s protocol version mismatch," " my %d != server's %d\n", ENTITY_NAME(con->peer_name), - ceph_pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr), le32_to_cpu(con->out_connect.protocol_version), le32_to_cpu(con->in_reply.protocol_version)); con->error_msg = "protocol version mismatch"; @@ -2138,7 +2138,7 @@ static int process_connect(struct ceph_connection *con) le32_to_cpu(con->in_reply.connect_seq)); pr_err("%s%lld %s connection reset\n", ENTITY_NAME(con->peer_name), - ceph_pr_addr(&con->peer_addr.in_addr)); + ceph_pr_addr(&con->peer_addr)); reset_connection(con); con_out_kvec_reset(con); ret = prepare_write_connect(con); @@ -2195,7 +2195,7 @@ static int process_connect(struct ceph_connection *con) pr_err("%s%lld %s protocol feature mismatch," " my required %llx > server's %llx, need %llx\n", ENTITY_NAME(con->peer_name), - ceph_pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr), req_feat, server_feat, req_feat & ~server_feat); con->error_msg = "missing required protocol features"; reset_connection(con); @@ -2402,7 +2402,7 @@ static int read_partial_message(struct ceph_connection *con) if ((s64)seq - (s64)con->in_seq < 1) { pr_info("skipping %s%lld %s seq %lld expected %lld\n", ENTITY_NAME(con->peer_name), - ceph_pr_addr(&con->peer_addr.in_addr), + ceph_pr_addr(&con->peer_addr), seq, con->in_seq + 1); con->in_base_pos = -front_len - middle_len - data_len - sizeof_footer(con); @@ -2981,10 +2981,10 @@ static void ceph_con_workfn(struct work_struct *work) static void con_fault(struct ceph_connection *con) { dout("fault %p state %lu to peer %s\n", - con, con->state, ceph_pr_addr(&con->peer_addr.in_addr)); + con, con->state, ceph_pr_addr(&con->peer_addr)); pr_warn("%s%lld %s %s\n", ENTITY_NAME(con->peer_name), - ceph_pr_addr(&con->peer_addr.in_addr), con->error_msg); + ceph_pr_addr(&con->peer_addr), con->error_msg); con->error_msg = NULL; WARN_ON(con->state != CON_STATE_CONNECTING && diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c index a53e4fbb6319..895679d3529b 100644 --- a/net/ceph/mon_client.c +++ b/net/ceph/mon_client.c @@ -76,7 +76,7 @@ struct ceph_monmap *ceph_monmap_decode(void *p, void *end) m->num_mon); for (i = 0; i < m->num_mon; i++) dout("monmap_decode mon%d is %s\n", i, - ceph_pr_addr(&m->mon_inst[i].addr.in_addr)); + ceph_pr_addr(&m->mon_inst[i].addr)); return m; bad: @@ -203,7 +203,7 @@ static void reopen_session(struct ceph_mon_client *monc) { if (!monc->hunting) pr_info("mon%d %s session lost, hunting for new mon\n", - monc->cur_mon, ceph_pr_addr(&monc->con.peer_addr.in_addr)); + monc->cur_mon, ceph_pr_addr(&monc->con.peer_addr)); __close_session(monc); __open_session(monc); @@ -1178,7 +1178,7 @@ static void handle_auth_reply(struct ceph_mon_client *monc, __resend_generic_request(monc); pr_info("mon%d %s session established\n", monc->cur_mon, - ceph_pr_addr(&monc->con.peer_addr.in_addr)); + ceph_pr_addr(&monc->con.peer_addr)); } out: diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index fa9530dd876e..e6d31e0f0289 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -4926,7 +4926,7 @@ static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) dout("%s %s%llu cookie %llu addr %s\n", __func__, ENTITY_NAME(item->name), item->cookie, - ceph_pr_addr(&item->addr.in_addr)); + ceph_pr_addr(&item->addr)); return 0; } -- cgit