tree: git://git.infradead.org/users/hch/misc.git sockptr head: 6e97573fbdf946abb3ec30cabcc9aba14284aa3e commit: 6e97573fbdf946abb3ec30cabcc9aba14284aa3e [46/46] net: pass a sockptr_t into ->setsockopt config: m68k-allmodconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 6e97573fbdf946abb3ec30cabcc9aba14284aa3e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): In file included from arch/m68k/include/asm/io_mm.h:25, from arch/m68k/include/asm/io.h:8, from include/linux/io.h:13, from include/linux/irq.h:20, from include/asm-generic/hardirq.h:13, from ./arch/m68k/include/generated/asm/hardirq.h:1, from include/linux/hardirq.h:10, from include/net/sock.h:38, from net/phonet/pep.c:16: arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsb': arch/m68k/include/asm/raw_io.h:83:7: warning: variable '__w' set but not used [-Wunused-but-set-variable] 83 | ({u8 __w, __v = (b); u32 _addr = ((u32) (addr)); \ | ^~~ arch/m68k/include/asm/raw_io.h:430:3: note: in expansion of macro 'rom_out_8' 430 | rom_out_8(port, *buf++); | ^~~~~~~~~ arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsw': arch/m68k/include/asm/raw_io.h:86:8: warning: variable '__w' set but not used [-Wunused-but-set-variable] 86 | ({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \ | ^~~ arch/m68k/include/asm/raw_io.h:448:3: note: in expansion of macro 'rom_out_be16' 448 | rom_out_be16(port, *buf++); | ^~~~~~~~~~~~ arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsw_swapw': arch/m68k/include/asm/raw_io.h:90:8: warning: variable '__w' set but not used [-Wunused-but-set-variable] 90 | ({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \ | ^~~ arch/m68k/include/asm/raw_io.h:466:3: note: in expansion of macro 'rom_out_le16' 466 | rom_out_le16(port, *buf++); | ^~~~~~~~~~~~ In file included from include/linux/kernel.h:11, from net/phonet/pep.c:12: include/linux/scatterlist.h: In function 'sg_set_buf': arch/m68k/include/asm/page_mm.h:169:49: warning: ordered comparison of pointer with null pointer [-Wextra] 169 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ In file included from arch/m68k/include/asm/bug.h:32, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/preempt.h:5, from ./arch/m68k/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from arch/m68k/include/asm/irqflags.h:6, from include/linux/irqflags.h:16, from arch/m68k/include/asm/atomic.h:6, from include/linux/atomic.h:7, from include/linux/rcupdate.h:25, from include/linux/rculist.h:11, from include/linux/sched/signal.h:5, from net/phonet/pep.c:13: include/linux/dma-mapping.h: In function 'dma_map_resource': arch/m68k/include/asm/page_mm.h:169:49: warning: ordered comparison of pointer with null pointer [-Wextra] 169 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) | ^~ include/asm-generic/bug.h:144:27: note: in definition of macro 'WARN_ON_ONCE' 144 | int __ret_warn_once = !!(condition); \ | ^~~~~~~~~ arch/m68k/include/asm/page_mm.h:170:25: note: in expansion of macro 'virt_addr_valid' 170 | #define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn)) | ^~~~~~~~~~~~~~~ include/linux/dma-mapping.h:352:19: note: in expansion of macro 'pfn_valid' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~ net/phonet/pep.c: In function 'pep_setsockopt': 1039 | static int pep_getsockopt(struct sock *sk, int level, int optname, | ^~~~~~~~~~~~~~ 1039 | static int pep_getsockopt(struct sock *sk, int level, int optname, | ^~~~~~ 1081 | static int pipe_skb_send(struct sock *sk, struct sk_buff *skb) | ^~~~~~~~~~~~~ 1111 | static int pep_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) | ^~~~~~~~~~~ 1237 | static int pep_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, | ^~~~~~~~~~~ 1294 | static void pep_sock_unhash(struct sock *sk) | ^~~~~~~~~~~~~~~ 1329 | .getsockopt = pep_getsockopt, | ^~~~~~~~~~~~~~ net/phonet/pep.c:1329:16: note: (near initialization for 'pep_proto.getsockopt') net/phonet/pep.c:1330:13: error: initializer element is not constant 1330 | .sendmsg = pep_sendmsg, | ^~~~~~~~~~~ net/phonet/pep.c:1330:13: note: (near initialization for 'pep_proto.sendmsg') net/phonet/pep.c:1331:13: error: initializer element is not constant 1331 | .recvmsg = pep_recvmsg, | ^~~~~~~~~~~ net/phonet/pep.c:1331:13: note: (near initialization for 'pep_proto.recvmsg') net/phonet/pep.c:1334:13: error: initializer element is not constant 1334 | .unhash = pep_sock_unhash, | ^~~~~~~~~~~~~~~ net/phonet/pep.c:1334:13: note: (near initialization for 'pep_proto.unhash') 1347 | static int __init pep_register(void) | ^~~~~~~~~~~~ 1352 | static void __exit pep_unregister(void) | ^~~~~~~~~~~~~~ In file included from include/linux/bpf.h:20, from include/linux/bpf-cgroup.h:5, from include/linux/cgroup-defs.h:22, from include/linux/cgroup.h:28, from include/net/netprio_cgroup.h:11, from include/linux/netdevice.h:42, from include/net/sock.h:46, from net/phonet/pep.c:16: 131 | static inline initcall_t __maybe_unused __inittest(void) \ | ^~~~~~~~~~ net/phonet/pep.c:1357:1: note: in expansion of macro 'module_init' 1357 | module_init(pep_register); | ^~~~~~~~~~~ In file included from include/linux/bpf.h:20, from include/linux/bpf-cgroup.h:5, from include/linux/cgroup-defs.h:22, from include/linux/cgroup.h:28, from include/net/netprio_cgroup.h:11, from include/linux/netdevice.h:42, from include/net/sock.h:46, from net/phonet/pep.c:16: 137 | static inline exitcall_t __maybe_unused __exittest(void) \ | ^~~~~~~~~~ net/phonet/pep.c:1358:1: note: in expansion of macro 'module_exit' 1358 | module_exit(pep_unregister); | ^~~~~~~~~~~ 137 | static inline exitcall_t __maybe_unused __exittest(void) \ | ^~~~~~ net/phonet/pep.c:1358:1: note: in expansion of macro 'module_exit' 1358 | module_exit(pep_unregister); | ^~~~~~~~~~~ net/phonet/pep.c:1358:1: warning: 'alias' attribute ignored [-Wattributes] In file included from include/linux/module.h:21, from include/linux/bpf.h:20, from include/linux/bpf-cgroup.h:5, from include/linux/cgroup-defs.h:22, from include/linux/cgroup.h:28, from include/net/netprio_cgroup.h:11, from include/linux/netdevice.h:42, from include/net/sock.h:46, from net/phonet/pep.c:16: 24 | static const char __UNIQUE_ID(name)[] \ | ^~~~~~ include/linux/module.h:162:32: note: in expansion of macro '__MODULE_INFO' 162 | #define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info) | ^~~~~~~~~~~~~ include/linux/module.h:232:32: note: in expansion of macro 'MODULE_INFO' 232 | #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author) | ^~~~~~~~~~~ net/phonet/pep.c:1359:1: note: in expansion of macro 'MODULE_AUTHOR' 1359 | MODULE_AUTHOR("Remi Denis-Courmont, Nokia"); | ^~~~~~~~~~~~~ 1362 | MODULE_ALIAS_NET_PF_PROTO(PF_PHONET, PN_PROTO_PIPE); | ^~~~~~~~~~~~~~~~~~~~~~~~~ At top level: net/phonet/pep.c:1228:17: warning: 'pep_read' defined but not used [-Wunused-function] 1228 | struct sk_buff *pep_read(struct sock *sk) | ^~~~~~~~ net/phonet/pep.c:1197:5: warning: 'pep_write' defined but not used [-Wunused-function] 1197 | int pep_write(struct sock *sk, struct sk_buff *skb) | ^~~~~~~~~ net/phonet/pep.c:1190:5: warning: 'pep_writeable' defined but not used [-Wunused-function] 1190 | int pep_writeable(struct sock *sk) | ^~~~~~~~~~~~~ net/phonet/pep.c:977:12: warning: 'pep_setsockopt' defined but not used [-Wunused-function] 977 | static int pep_setsockopt(struct sock *sk, int level, int optname, | ^~~~~~~~~~~~~~ -- In file included from arch/m68k/include/asm/io_mm.h:25, from arch/m68k/include/asm/io.h:8, from include/linux/scatterlist.h:9, from include/linux/dma-mapping.h:11, from include/linux/skbuff.h:31, from include/linux/mISDNif.h:413, from drivers/isdn/mISDN/socket.c:9: arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsb': arch/m68k/include/asm/raw_io.h:83:7: warning: variable '__w' set but not used [-Wunused-but-set-variable] 83 | ({u8 __w, __v = (b); u32 _addr = ((u32) (addr)); \ | ^~~ arch/m68k/include/asm/raw_io.h:430:3: note: in expansion of macro 'rom_out_8' 430 | rom_out_8(port, *buf++); | ^~~~~~~~~ arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsw': arch/m68k/include/asm/raw_io.h:86:8: warning: variable '__w' set but not used [-Wunused-but-set-variable] 86 | ({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \ | ^~~ arch/m68k/include/asm/raw_io.h:448:3: note: in expansion of macro 'rom_out_be16' 448 | rom_out_be16(port, *buf++); | ^~~~~~~~~~~~ arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsw_swapw': arch/m68k/include/asm/raw_io.h:90:8: warning: variable '__w' set but not used [-Wunused-but-set-variable] 90 | ({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \ | ^~~ arch/m68k/include/asm/raw_io.h:466:3: note: in expansion of macro 'rom_out_le16' 466 | rom_out_le16(port, *buf++); | ^~~~~~~~~~~~ In file included from include/linux/kernel.h:11, from include/linux/uio.h:8, from include/linux/socket.h:8, from include/linux/mISDNif.h:24, from drivers/isdn/mISDN/socket.c:9: include/linux/scatterlist.h: In function 'sg_set_buf': arch/m68k/include/asm/page_mm.h:169:49: warning: ordered comparison of pointer with null pointer [-Wextra] 169 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ In file included from arch/m68k/include/asm/bug.h:32, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/linux/uio.h:9, from include/linux/socket.h:8, from include/linux/mISDNif.h:24, from drivers/isdn/mISDN/socket.c:9: include/linux/dma-mapping.h: In function 'dma_map_resource': arch/m68k/include/asm/page_mm.h:169:49: warning: ordered comparison of pointer with null pointer [-Wextra] 169 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) | ^~ include/asm-generic/bug.h:144:27: note: in definition of macro 'WARN_ON_ONCE' 144 | int __ret_warn_once = !!(condition); \ | ^~~~~~~~~ arch/m68k/include/asm/page_mm.h:170:25: note: in expansion of macro 'virt_addr_valid' 170 | #define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn)) | ^~~~~~~~~~~~~~~ include/linux/dma-mapping.h:352:19: note: in expansion of macro 'pfn_valid' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~ In file included from include/linux/printk.h:7, from include/linux/kernel.h:15, from include/linux/uio.h:8, from include/linux/socket.h:8, from include/linux/mISDNif.h:24, from drivers/isdn/mISDN/socket.c:9: drivers/isdn/mISDN/socket.c: In function 'data_sock_setsockopt': 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ | ^~~~~~ include/linux/kern_levels.h:15:20: note: in expansion of macro 'KERN_SOH' 15 | #define KERN_DEBUG KERN_SOH "7" /* debug-level messages */ | ^~~~~~~~ drivers/isdn/mISDN/socket.c:410:10: note: in expansion of macro 'KERN_DEBUG' 410 | printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock, | ^~~~~~~~~~ drivers/isdn/mISDN/socket.c:410:38: note: format string is defined here 410 | printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock, | ~^ | | | void * -- In file included from arch/m68k/include/asm/io_mm.h:25, from arch/m68k/include/asm/io.h:8, from include/linux/scatterlist.h:9, from include/linux/dma-mapping.h:11, from include/linux/skbuff.h:31, from include/linux/if_ether.h:19, from include/uapi/linux/ethtool.h:19, from include/linux/ethtool.h:18, from include/linux/netdevice.h:37, from net/mptcp/protocol.c:11: arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsb': arch/m68k/include/asm/raw_io.h:83:7: warning: variable '__w' set but not used [-Wunused-but-set-variable] 83 | ({u8 __w, __v = (b); u32 _addr = ((u32) (addr)); \ | ^~~ arch/m68k/include/asm/raw_io.h:430:3: note: in expansion of macro 'rom_out_8' 430 | rom_out_8(port, *buf++); | ^~~~~~~~~ arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsw': arch/m68k/include/asm/raw_io.h:86:8: warning: variable '__w' set but not used [-Wunused-but-set-variable] 86 | ({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \ | ^~~ arch/m68k/include/asm/raw_io.h:448:3: note: in expansion of macro 'rom_out_be16' 448 | rom_out_be16(port, *buf++); | ^~~~~~~~~~~~ arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsw_swapw': arch/m68k/include/asm/raw_io.h:90:8: warning: variable '__w' set but not used [-Wunused-but-set-variable] 90 | ({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \ | ^~~ arch/m68k/include/asm/raw_io.h:466:3: note: in expansion of macro 'rom_out_le16' 466 | rom_out_le16(port, *buf++); | ^~~~~~~~~~~~ In file included from include/linux/kernel.h:11, from net/mptcp/protocol.c:9: include/linux/scatterlist.h: In function 'sg_set_buf': arch/m68k/include/asm/page_mm.h:169:49: warning: ordered comparison of pointer with null pointer [-Wextra] 169 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ In file included from arch/m68k/include/asm/bug.h:32, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/preempt.h:5, from ./arch/m68k/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/spinlock.h:51, from include/linux/seqlock.h:36, from include/linux/time.h:6, from include/linux/stat.h:19, from include/linux/module.h:13, from net/mptcp/protocol.c:10: include/linux/dma-mapping.h: In function 'dma_map_resource': arch/m68k/include/asm/page_mm.h:169:49: warning: ordered comparison of pointer with null pointer [-Wextra] 169 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) | ^~ include/asm-generic/bug.h:144:27: note: in definition of macro 'WARN_ON_ONCE' 144 | int __ret_warn_once = !!(condition); \ | ^~~~~~~~~ arch/m68k/include/asm/page_mm.h:170:25: note: in expansion of macro 'virt_addr_valid' 170 | #define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn)) | ^~~~~~~~~~~~~~~ include/linux/dma-mapping.h:352:19: note: in expansion of macro 'pfn_valid' 352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~ net/mptcp/protocol.c: In function 'mptcp_setsockopt_sol_socket': 1659 | USER_SOCKPTR(optval), optlen); | ^~~~~~ | | | sockptr_t {aka struct <anonymous>} In file included from include/linux/net.h:24, from include/linux/skbuff.h:26, from include/linux/if_ether.h:19, from include/uapi/linux/ethtool.h:19, from include/linux/ethtool.h:18, from include/linux/netdevice.h:37, from net/mptcp/protocol.c:11: include/linux/sockptr.h:43:51: note: expected 'void *' but argument is of type 'sockptr_t' {aka 'struct <anonymous>'} 43 | static inline sockptr_t USER_SOCKPTR(void __user *p) | ~~~~~~~~~~~~~^ 1660 | } | ^ .. vim +/pep_getsockopt +1039 net/phonet/pep.c 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1038 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 @1039 static int pep_getsockopt(struct sock *sk, int level, int optname, 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1040 char __user *optval, int __user *optlen) 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1041 { 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1042 struct pep_sock *pn = pep_sk(sk); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1043 int len, val; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1044 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1045 if (level != SOL_PNPIPE) 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1046 return -ENOPROTOOPT; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1047 if (get_user(len, optlen)) 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1048 return -EFAULT; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1049 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1050 switch (optname) { 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1051 case PNPIPE_ENCAP: 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1052 val = pn->ifindex ? PNPIPE_ENCAP_IP : PNPIPE_ENCAP_NONE; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1053 break; 8d98efa84b790b Kumar Sanghvi 2010-09-26 1054 03789f26722a15 Rémi Denis-Courmont 2010-10-08 1055 case PNPIPE_IFINDEX: 03789f26722a15 Rémi Denis-Courmont 2010-10-08 1056 val = pn->ifindex; 03789f26722a15 Rémi Denis-Courmont 2010-10-08 1057 break; 03789f26722a15 Rémi Denis-Courmont 2010-10-08 1058 acaf7df610ff3f Rémi Denis-Courmont 2011-03-08 1059 case PNPIPE_HANDLE: acaf7df610ff3f Rémi Denis-Courmont 2011-03-08 1060 val = pn->pipe_handle; acaf7df610ff3f Rémi Denis-Courmont 2011-03-08 1061 if (val == PN_PIPE_INVALID_HANDLE) acaf7df610ff3f Rémi Denis-Courmont 2011-03-08 1062 return -EINVAL; acaf7df610ff3f Rémi Denis-Courmont 2011-03-08 1063 break; acaf7df610ff3f Rémi Denis-Courmont 2011-03-08 1064 bdb6e697b2a76c Dinesh Kumar Sharma 2011-11-18 1065 case PNPIPE_INITSTATE: bdb6e697b2a76c Dinesh Kumar Sharma 2011-11-18 1066 val = pn->init_enable; bdb6e697b2a76c Dinesh Kumar Sharma 2011-11-18 1067 break; bdb6e697b2a76c Dinesh Kumar Sharma 2011-11-18 1068 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1069 default: 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1070 return -ENOPROTOOPT; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1071 } 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1072 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1073 len = min_t(unsigned int, sizeof(int), len); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1074 if (put_user(len, optlen)) 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1075 return -EFAULT; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1076 if (put_user(val, (int __user *) optval)) 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1077 return -EFAULT; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1078 return 0; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1079 } 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1080 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 @1081 static int pipe_skb_send(struct sock *sk, struct sk_buff *skb) 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1082 { 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1083 struct pep_sock *pn = pep_sk(sk); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1084 struct pnpipehdr *ph; e1a5964f0c32a7 Rémi Denis-Courmont 2010-09-29 1085 int err; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1086 be677730a0ccb6 Rémi Denis-Courmont 2008-12-17 1087 if (pn_flow_safe(pn->tx_fc) && be677730a0ccb6 Rémi Denis-Courmont 2008-12-17 1088 !atomic_add_unless(&pn->tx_credits, -1, 0)) { be677730a0ccb6 Rémi Denis-Courmont 2008-12-17 1089 kfree_skb(skb); be677730a0ccb6 Rémi Denis-Courmont 2008-12-17 1090 return -ENOBUFS; be677730a0ccb6 Rémi Denis-Courmont 2008-12-17 1091 } be677730a0ccb6 Rémi Denis-Courmont 2008-12-17 1092 fea93ecef619b5 Rémi Denis-Courmont 2010-01-04 1093 skb_push(skb, 3 + pn->aligned); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1094 skb_reset_transport_header(skb); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1095 ph = pnp_hdr(skb); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1096 ph->utid = 0; fea93ecef619b5 Rémi Denis-Courmont 2010-01-04 1097 if (pn->aligned) { fea93ecef619b5 Rémi Denis-Courmont 2010-01-04 1098 ph->message_id = PNS_PIPE_ALIGNED_DATA; 6321aa197547da Arnd Bergmann 2019-02-19 1099 ph->data0 = 0; /* padding */ fea93ecef619b5 Rémi Denis-Courmont 2010-01-04 1100 } else 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1101 ph->message_id = PNS_PIPE_DATA; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1102 ph->pipe_handle = pn->pipe_handle; 14ba8faebcc241 Rémi Denis-Courmont 2011-02-24 1103 err = pn_skb_send(sk, skb, NULL); e1a5964f0c32a7 Rémi Denis-Courmont 2010-09-29 1104 e1a5964f0c32a7 Rémi Denis-Courmont 2010-09-29 1105 if (err && pn_flow_safe(pn->tx_fc)) e1a5964f0c32a7 Rémi Denis-Courmont 2010-09-29 1106 atomic_inc(&pn->tx_credits); e1a5964f0c32a7 Rémi Denis-Courmont 2010-09-29 1107 return err; e1a5964f0c32a7 Rémi Denis-Courmont 2010-09-29 1108 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1109 } 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1110 1b784140474e4f Ying Xue 2015-03-02 @1111 static int pep_sendmsg(struct sock *sk, struct msghdr *msg, size_t len) 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1112 { 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1113 struct pep_sock *pn = pep_sk(sk); b1704374fd525e Rémi Denis-Courmont 2009-11-09 1114 struct sk_buff *skb; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1115 long timeo; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1116 int flags = msg->msg_flags; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1117 int err, done; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1118 bcf1b70ac6eb0e Sasha Levin 2012-04-05 1119 if (len > USHRT_MAX) bcf1b70ac6eb0e Sasha Levin 2012-04-05 1120 return -EMSGSIZE; bcf1b70ac6eb0e Sasha Levin 2012-04-05 1121 82ecbcb9c6b525 Rémi Denis-Courmont 2010-01-04 1122 if ((msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_NOSIGNAL| 82ecbcb9c6b525 Rémi Denis-Courmont 2010-01-04 1123 MSG_CMSG_COMPAT)) || 82ecbcb9c6b525 Rémi Denis-Courmont 2010-01-04 1124 !(msg->msg_flags & MSG_EOR)) 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1125 return -EOPNOTSUPP; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1126 b1704374fd525e Rémi Denis-Courmont 2009-11-09 1127 skb = sock_alloc_send_skb(sk, MAX_PNPIPE_HEADER + len, b1704374fd525e Rémi Denis-Courmont 2009-11-09 1128 flags & MSG_DONTWAIT, &err); b1704374fd525e Rémi Denis-Courmont 2009-11-09 1129 if (!skb) 02ac3268a58163 Rémi Denis-Courmont 2010-08-30 1130 return err; b1704374fd525e Rémi Denis-Courmont 2009-11-09 1131 638be344593b66 Rémi Denis-Courmont 2011-03-15 1132 skb_reserve(skb, MAX_PHONET_HEADER + 3 + pn->aligned); 6ce8e9ce5989ae Al Viro 2014-04-06 1133 err = memcpy_from_msg(skb_put(skb, len), msg, len); b1704374fd525e Rémi Denis-Courmont 2009-11-09 1134 if (err < 0) b1704374fd525e Rémi Denis-Courmont 2009-11-09 1135 goto outfree; b1704374fd525e Rémi Denis-Courmont 2009-11-09 1136 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1137 lock_sock(sk); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1138 timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1139 if ((1 << sk->sk_state) & (TCPF_LISTEN|TCPF_CLOSE)) { 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1140 err = -ENOTCONN; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1141 goto out; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1142 } 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1143 if (sk->sk_state != TCP_ESTABLISHED) { 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1144 /* Wait until the pipe gets to enabled state */ 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1145 disabled: 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1146 err = sk_stream_wait_connect(sk, &timeo); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1147 if (err) 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1148 goto out; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1149 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1150 if (sk->sk_state == TCP_CLOSE_WAIT) { 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1151 err = -ECONNRESET; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1152 goto out; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1153 } 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1154 } 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1155 BUG_ON(sk->sk_state != TCP_ESTABLISHED); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1156 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1157 /* Wait until flow control allows TX */ be677730a0ccb6 Rémi Denis-Courmont 2008-12-17 1158 done = atomic_read(&pn->tx_credits); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1159 while (!done) { d9dc8b0f8b4ec8 WANG Cong 2016-11-11 1160 DEFINE_WAIT_FUNC(wait, woken_wake_function); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1161 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1162 if (!timeo) { 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1163 err = -EAGAIN; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1164 goto out; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1165 } 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1166 if (signal_pending(current)) { 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1167 err = sock_intr_errno(timeo); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1168 goto out; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1169 } 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1170 d9dc8b0f8b4ec8 WANG Cong 2016-11-11 1171 add_wait_queue(sk_sleep(sk), &wait); d9dc8b0f8b4ec8 WANG Cong 2016-11-11 1172 done = sk_wait_event(sk, &timeo, atomic_read(&pn->tx_credits), &wait); d9dc8b0f8b4ec8 WANG Cong 2016-11-11 1173 remove_wait_queue(sk_sleep(sk), &wait); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1174 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1175 if (sk->sk_state != TCP_ESTABLISHED) 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1176 goto disabled; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1177 } 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1178 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1179 err = pipe_skb_send(sk, skb); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1180 if (err >= 0) 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1181 err = len; /* success! */ 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1182 skb = NULL; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1183 out: 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1184 release_sock(sk); b1704374fd525e Rémi Denis-Courmont 2009-11-09 1185 outfree: 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1186 kfree_skb(skb); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1187 return err; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1188 } 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1189 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1190 int pep_writeable(struct sock *sk) 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1191 { 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1192 struct pep_sock *pn = pep_sk(sk); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1193 be677730a0ccb6 Rémi Denis-Courmont 2008-12-17 1194 return atomic_read(&pn->tx_credits); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1195 } 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1196 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1197 int pep_write(struct sock *sk, struct sk_buff *skb) 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1198 { 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1199 struct sk_buff *rskb, *fs; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1200 int flen = 0; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1201 fea93ecef619b5 Rémi Denis-Courmont 2010-01-04 1202 if (pep_sk(sk)->aligned) fea93ecef619b5 Rémi Denis-Courmont 2010-01-04 1203 return pipe_skb_send(sk, skb); fea93ecef619b5 Rémi Denis-Courmont 2010-01-04 1204 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1205 rskb = alloc_skb(MAX_PNPIPE_HEADER, GFP_ATOMIC); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1206 if (!rskb) { 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1207 kfree_skb(skb); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1208 return -ENOMEM; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1209 } 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1210 skb_shinfo(rskb)->frag_list = skb; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1211 rskb->len += skb->len; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1212 rskb->data_len += rskb->len; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1213 rskb->truesize += rskb->len; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1214 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1215 /* Avoid nested fragments */ 5c313e9a7773ec David S. Miller 2009-06-09 1216 skb_walk_frags(skb, fs) 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1217 flen += fs->len; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1218 skb->next = skb_shinfo(skb)->frag_list; 5c313e9a7773ec David S. Miller 2009-06-09 1219 skb_frag_list_init(skb); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1220 skb->len -= flen; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1221 skb->data_len -= flen; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1222 skb->truesize -= flen; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1223 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1224 skb_reserve(rskb, MAX_PHONET_HEADER + 3); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1225 return pipe_skb_send(sk, rskb); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1226 } 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1227 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1228 struct sk_buff *pep_read(struct sock *sk) 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1229 { 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1230 struct sk_buff *skb = skb_dequeue(&sk->sk_receive_queue); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1231 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1232 if (sk->sk_state == TCP_ESTABLISHED) 44c9ab16d29a50 Rémi Denis-Courmont 2011-03-08 1233 pipe_grant_credits(sk, GFP_ATOMIC); 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1234 return skb; 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1235 } 02a47617cdce44 Rémi Denis-Courmont 2008-10-05 1236 1b784140474e4f Ying Xue 2015-03-02 @1237 static int pep_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, 1b784140474e4f Ying Xue 2015-03-02 1238 int noblock, int flags, int *addr_len) 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1239 { 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1240 struct sk_buff *skb; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1241 int err; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1242 82ecbcb9c6b525 Rémi Denis-Courmont 2010-01-04 1243 if (flags & ~(MSG_OOB|MSG_PEEK|MSG_TRUNC|MSG_DONTWAIT|MSG_WAITALL| 82ecbcb9c6b525 Rémi Denis-Courmont 2010-01-04 1244 MSG_NOSIGNAL|MSG_CMSG_COMPAT)) 82ecbcb9c6b525 Rémi Denis-Courmont 2010-01-04 1245 return -EOPNOTSUPP; 82ecbcb9c6b525 Rémi Denis-Courmont 2010-01-04 1246 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1247 if (unlikely(1 << sk->sk_state & (TCPF_LISTEN | TCPF_CLOSE))) 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1248 return -ENOTCONN; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1249 c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1250 if ((flags & MSG_OOB) || sock_flag(sk, SOCK_URGINLINE)) { c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1251 /* Dequeue and acknowledge control request */ c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1252 struct pep_sock *pn = pep_sk(sk); c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1253 82ecbcb9c6b525 Rémi Denis-Courmont 2010-01-04 1254 if (flags & MSG_PEEK) 82ecbcb9c6b525 Rémi Denis-Courmont 2010-01-04 1255 return -EOPNOTSUPP; c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1256 skb = skb_dequeue(&pn->ctrlreq_queue); c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1257 if (skb) { c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1258 pep_ctrlreq_error(sk, skb, PN_PIPE_NO_ERROR, c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1259 GFP_KERNEL); c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1260 msg->msg_flags |= MSG_OOB; c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1261 goto copy; c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1262 } c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1263 if (flags & MSG_OOB) c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1264 return -EINVAL; c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1265 } c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1266 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1267 skb = skb_recv_datagram(sk, flags, noblock, &err); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1268 lock_sock(sk); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1269 if (skb == NULL) { 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1270 if (err == -ENOTCONN && sk->sk_state == TCP_CLOSE_WAIT) 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1271 err = -ECONNRESET; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1272 release_sock(sk); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1273 return err; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1274 } 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1275 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1276 if (sk->sk_state == TCP_ESTABLISHED) 44c9ab16d29a50 Rémi Denis-Courmont 2011-03-08 1277 pipe_grant_credits(sk, GFP_KERNEL); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1278 release_sock(sk); c41bd97f815720 Rémi Denis-Courmont 2008-10-05 1279 copy: 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1280 msg->msg_flags |= MSG_EOR; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1281 if (skb->len > len) 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1282 msg->msg_flags |= MSG_TRUNC; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1283 else 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1284 len = skb->len; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1285 51f3d02b980a33 David S. Miller 2014-11-05 1286 err = skb_copy_datagram_msg(skb, 0, msg, len); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1287 if (!err) 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1288 err = (flags & MSG_TRUNC) ? skb->len : len; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1289 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1290 skb_free_datagram(sk, skb); 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1291 return err; 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1292 } 9641458d3ec42d Rémi Denis-Courmont 2008-10-05 1293 :::::: The code at line 1039 was first introduced by commit :::::: 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a Phonet: implement GPRS virtual interface over PEP socket :::::: TO: Rémi Denis-Courmont <remi.denis-courmont(a)nokia.com&gt; :::::: CC: David S. Miller <davem(a)davemloft.net&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org