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charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/kuba/linux.git tls-wip head: 38f7b843197f36fd1147d14d8dac84f0d480946d commit: 03804ec62cc6126f981623a3d4afb3fa4eba64c7 [25/27] rxm - move updates into ctx config: arm64-buildonly-randconfig-r002-20220531 (https://download.01.org/0day-ci/archive/20220604/202206041430.w06wF78n-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project b364c76683f8ef241025a9556300778c07b590c2) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/kuba/linux.git/commit/?id=03804ec62cc6126f981623a3d4afb3fa4eba64c7 git remote add kuba https://git.kernel.org/pub/scm/linux/kernel/git/kuba/linux.git git fetch --no-tags kuba tls-wip git checkout 03804ec62cc6126f981623a3d4afb3fa4eba64c7 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash net/tls/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> net/tls/tls_sw.c:1952:6: warning: variable 'rxm' is uninitialized when used here [-Wuninitialized] rxm->offset = rxm->offset + rxm->full_len; ^~~ net/tls/tls_sw.c:1944:24: note: initialize the variable 'rxm' to silence this warning struct strp_msg *rxm; ^ = NULL 1 warning generated. vim +/rxm +1952 net/tls/tls_sw.c 9655bea3d64350 Jakub Kicinski 2022-04-01 1815 c46234ebb4d1ee Dave Watson 2018-03-22 1816 int tls_sw_recvmsg(struct sock *sk, c46234ebb4d1ee Dave Watson 2018-03-22 1817 struct msghdr *msg, c46234ebb4d1ee Dave Watson 2018-03-22 1818 size_t len, c46234ebb4d1ee Dave Watson 2018-03-22 1819 int flags, c46234ebb4d1ee Dave Watson 2018-03-22 1820 int *addr_len) c46234ebb4d1ee Dave Watson 2018-03-22 1821 { c46234ebb4d1ee Dave Watson 2018-03-22 1822 struct tls_context *tls_ctx = tls_get_ctx(sk); f66de3ee2c161f Boris Pismenny 2018-04-30 1823 struct tls_sw_context_rx *ctx = tls_sw_ctx_rx(tls_ctx); 4509de14680084 Vakul Garg 2019-02-14 1824 struct tls_prot_info *prot = &tls_ctx->prot_info; d3b18ad31f93d0 John Fastabend 2018-10-13 1825 struct sk_psock *psock; 692d7b5d1f9125 Vakul Garg 2019-01-16 1826 unsigned char control = 0; 692d7b5d1f9125 Vakul Garg 2019-01-16 1827 ssize_t decrypted = 0; 9655bea3d64350 Jakub Kicinski 2022-04-01 1828 size_t flushed_at = 0; c46234ebb4d1ee Dave Watson 2018-03-22 1829 struct sk_buff *skb; c46234ebb4d1ee Dave Watson 2018-03-22 1830 ssize_t copied = 0; 7da18bcc5e4cfd Jakub Kicinski 2022-04-08 1831 bool async = false; 06030dbaf3b6c5 Daniel Borkmann 2018-06-15 1832 int target, err = 0; c46234ebb4d1ee Dave Watson 2018-03-22 1833 long timeo; 00e23707442a75 David Howells 2018-10-22 1834 bool is_kvec = iov_iter_is_kvec(&msg->msg_iter); 692d7b5d1f9125 Vakul Garg 2019-01-16 1835 bool is_peek = flags & MSG_PEEK; e91de6afa81c10 John Fastabend 2020-05-29 1836 bool bpf_strp_enabled; ba13609df18dab Jakub Kicinski 2022-04-08 1837 bool zc_capable; c46234ebb4d1ee Dave Watson 2018-03-22 1838 c46234ebb4d1ee Dave Watson 2018-03-22 1839 if (unlikely(flags & MSG_ERRQUEUE)) c46234ebb4d1ee Dave Watson 2018-03-22 1840 return sock_recv_errqueue(sk, msg, len, SOL_IP, IP_RECVERR); c46234ebb4d1ee Dave Watson 2018-03-22 1841 d3b18ad31f93d0 John Fastabend 2018-10-13 1842 psock = sk_psock_get(sk); c46234ebb4d1ee Dave Watson 2018-03-22 1843 lock_sock(sk); e91de6afa81c10 John Fastabend 2020-05-29 1844 bpf_strp_enabled = sk_psock_strp_enabled(psock); c46234ebb4d1ee Dave Watson 2018-03-22 1845 f314bfee81b1bf Jakub Kicinski 2022-04-11 1846 /* If crypto failed the connection is broken */ f314bfee81b1bf Jakub Kicinski 2022-04-11 1847 err = ctx->async_wait.err; f314bfee81b1bf Jakub Kicinski 2022-04-11 1848 if (err) f314bfee81b1bf Jakub Kicinski 2022-04-11 1849 goto end; f314bfee81b1bf Jakub Kicinski 2022-04-11 1850 692d7b5d1f9125 Vakul Garg 2019-01-16 1851 /* Process pending decrypted records. It must be non-zero-copy */ 06554f4ffc2595 Jakub Kicinski 2022-04-08 1852 err = process_rx_list(ctx, msg, &control, 0, len, false, is_peek); 4dcdd971b9c7a5 Jakub Kicinski 2022-04-11 1853 if (err < 0) 692d7b5d1f9125 Vakul Garg 2019-01-16 1854 goto end; 692d7b5d1f9125 Vakul Garg 2019-01-16 1855 d5123edd10cf9d Jakub Kicinski 2022-04-07 1856 copied = err; 46a1695960d060 Jakub Kicinski 2019-05-24 1857 if (len <= copied) bfc06e1aaa130b Jakub Kicinski 2022-04-07 1858 goto end; 46a1695960d060 Jakub Kicinski 2019-05-24 1859 06030dbaf3b6c5 Daniel Borkmann 2018-06-15 1860 target = sock_rcvlowat(sk, flags & MSG_WAITALL, len); 46a1695960d060 Jakub Kicinski 2019-05-24 1861 len = len - copied; c46234ebb4d1ee Dave Watson 2018-03-22 1862 timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); 692d7b5d1f9125 Vakul Garg 2019-01-16 1863 ba13609df18dab Jakub Kicinski 2022-04-08 1864 zc_capable = !bpf_strp_enabled && !is_kvec && !is_peek && b814ee782eef62 Jakub Kicinski 2021-12-15 1865 ctx->zc_capable; bfc06e1aaa130b Jakub Kicinski 2022-04-07 1866 decrypted = 0; 04b25a5411f966 Jakub Kicinski 2019-05-24 1867 while (len && (decrypted + copied < target || ctx->recv_pkt)) { a7026cf1297903 Jakub Kicinski 2022-05-26 1868 struct tls_decrypt_arg darg; 9bdf75ccffa690 Jakub Kicinski 2022-04-08 1869 int to_decrypt, chunk; c46234ebb4d1ee Dave Watson 2018-03-22 1870 a7026cf1297903 Jakub Kicinski 2022-05-26 1871 memset(&darg.inargs, 0, sizeof(darg.inargs)); e3508236c701de Jakub Kicinski 2022-05-26 1872 err = tls_wait_data(sk, psock, flags & MSG_DONTWAIT, timeo); e3508236c701de Jakub Kicinski 2022-05-26 1873 if (err <= 0) { d3b18ad31f93d0 John Fastabend 2018-10-13 1874 if (psock) { 0775639ce1ca95 Jakub Kicinski 2022-04-11 1875 chunk = sk_msg_recvmsg(sk, psock, msg, len, 2bc793e3272a13 Cong Wang 2021-03-30 1876 flags); 257fd01208cd4c Jakub Kicinski 2022-05-25 1877 if (chunk > 0) { 257fd01208cd4c Jakub Kicinski 2022-05-25 1878 decrypted += chunk; 257fd01208cd4c Jakub Kicinski 2022-05-25 1879 len -= chunk; 257fd01208cd4c Jakub Kicinski 2022-05-25 1880 continue; 257fd01208cd4c Jakub Kicinski 2022-05-25 1881 } d3b18ad31f93d0 John Fastabend 2018-10-13 1882 } c46234ebb4d1ee Dave Watson 2018-03-22 1883 goto recv_end; d3b18ad31f93d0 John Fastabend 2018-10-13 1884 } c46234ebb4d1ee Dave Watson 2018-03-22 1885 03804ec62cc612 Jakub Kicinski 2022-06-02 1886 to_decrypt = ctx->full_len - prot->overhead_size; fedf201e12960b Dave Watson 2019-01-30 1887 06fa4c1bf464a9 Jakub Kicinski 2022-05-26 1888 /* periodically flush backlog, and feed strparser */ 06fa4c1bf464a9 Jakub Kicinski 2022-05-26 1889 tls_read_flush_backlog(sk, prot, len, to_decrypt, 06fa4c1bf464a9 Jakub Kicinski 2022-05-26 1890 decrypted + copied, &flushed_at); 06fa4c1bf464a9 Jakub Kicinski 2022-05-26 1891 ba13609df18dab Jakub Kicinski 2022-04-08 1892 if (zc_capable && to_decrypt <= len && efb7d5ac289e35 Jakub Kicinski 2022-06-01 1893 ctx->control == TLS_RECORD_TYPE_DATA) 4175eac37123a6 Jakub Kicinski 2022-04-08 1894 darg.zc = true; fedf201e12960b Dave Watson 2019-01-30 1895 c0ab4732d4c658 Vakul Garg 2019-02-11 1896 /* Do not use async mode if record is non-data */ efb7d5ac289e35 Jakub Kicinski 2022-06-01 1897 if (ctx->control == TLS_RECORD_TYPE_DATA && !bpf_strp_enabled) 4175eac37123a6 Jakub Kicinski 2022-04-08 1898 darg.async = ctx->async_capable; c0ab4732d4c658 Vakul Garg 2019-02-11 1899 else 4175eac37123a6 Jakub Kicinski 2022-04-08 1900 darg.async = false; c0ab4732d4c658 Vakul Garg 2019-02-11 1901 6e7221f5f493c2 Jakub Kicinski 2022-05-26 1902 err = tls_decrypt_skb_update(sk, &msg->msg_iter, &darg); 3547a1f9d988d8 Jakub Kicinski 2022-04-11 1903 if (err < 0) { f34f8f7258594f Jakub Kicinski 2022-03-12 1904 /* try to dodge memory failures */ f34f8f7258594f Jakub Kicinski 2022-03-12 1905 if (err != -ENOMEM || !(decrypted + copied)) da353fac65fede Daniel Jordan 2021-10-27 1906 tls_err_abort(sk, -EBADMSG); fedf201e12960b Dave Watson 2019-01-30 1907 goto recv_end; fedf201e12960b Dave Watson 2019-01-30 1908 } fedf201e12960b Dave Watson 2019-01-30 1909 a7026cf1297903 Jakub Kicinski 2022-05-26 1910 skb = darg.skb; 6e7221f5f493c2 Jakub Kicinski 2022-05-26 1911 3547a1f9d988d8 Jakub Kicinski 2022-04-11 1912 async |= darg.async; 2b794c4098b525 Vakul Garg 2019-02-23 1913 2b794c4098b525 Vakul Garg 2019-02-23 1914 /* If the type of records being processed is not known yet, 2b794c4098b525 Vakul Garg 2019-02-23 1915 * set it to record type just dequeued. If it is already known, 2b794c4098b525 Vakul Garg 2019-02-23 1916 * but does not match the record type just dequeued, go to end. 2b794c4098b525 Vakul Garg 2019-02-23 1917 * We always get record type here since for tls1.2, record type 2b794c4098b525 Vakul Garg 2019-02-23 1918 * is known just after record is dequeued from stream parser. 2b794c4098b525 Vakul Garg 2019-02-23 1919 * For tls1.3, we disable async. 2b794c4098b525 Vakul Garg 2019-02-23 1920 */ efb7d5ac289e35 Jakub Kicinski 2022-06-01 1921 err = tls_record_content_type(msg, ctx->control, &control); 06fa4c1bf464a9 Jakub Kicinski 2022-05-26 1922 if (err <= 0) { ee95a0f7b981ce Jakub Kicinski 2022-06-01 1923 tls_rx_rec_stow_prepare(ctx, skb); 06fa4c1bf464a9 Jakub Kicinski 2022-05-26 1924 put_on_rx_list_err: 06fa4c1bf464a9 Jakub Kicinski 2022-05-26 1925 __skb_queue_tail(&ctx->rx_list, skb); c46234ebb4d1ee Dave Watson 2018-03-22 1926 goto recv_end; 06fa4c1bf464a9 Jakub Kicinski 2022-05-26 1927 } b1a2c178633028 Jakub Kicinski 2022-04-08 1928 9bdf75ccffa690 Jakub Kicinski 2022-04-08 1929 if (async) { 9bdf75ccffa690 Jakub Kicinski 2022-04-08 1930 /* TLS 1.2-only, to_decrypt must be text length */ 9bdf75ccffa690 Jakub Kicinski 2022-04-08 1931 chunk = min_t(int, to_decrypt, len); ee95a0f7b981ce Jakub Kicinski 2022-06-01 1932 tls_rx_rec_stow_prepare(ctx, skb); 257fd01208cd4c Jakub Kicinski 2022-05-25 1933 put_on_rx_list: f940b6efb17257 Jakub Kicinski 2022-04-08 1934 decrypted += chunk; f940b6efb17257 Jakub Kicinski 2022-04-08 1935 len -= chunk; 257fd01208cd4c Jakub Kicinski 2022-05-25 1936 __skb_queue_tail(&ctx->rx_list, skb); f940b6efb17257 Jakub Kicinski 2022-04-08 1937 continue; 9bdf75ccffa690 Jakub Kicinski 2022-04-08 1938 } 9bdf75ccffa690 Jakub Kicinski 2022-04-08 1939 /* TLS 1.3 may have updated the length by more than overhead */ 03804ec62cc612 Jakub Kicinski 2022-06-02 1940 chunk = ctx->full_len; c0ab4732d4c658 Vakul Garg 2019-02-11 1941 4175eac37123a6 Jakub Kicinski 2022-04-08 1942 if (!darg.zc) { f940b6efb17257 Jakub Kicinski 2022-04-08 1943 bool partially_consumed = chunk > len; 03804ec62cc612 Jakub Kicinski 2022-06-02 1944 struct strp_msg *rxm; f940b6efb17257 Jakub Kicinski 2022-04-08 1945 ee95a0f7b981ce Jakub Kicinski 2022-06-01 1946 tls_rx_rec_stow_prepare(ctx, skb); ee95a0f7b981ce Jakub Kicinski 2022-06-01 1947 e91de6afa81c10 John Fastabend 2020-05-29 1948 if (bpf_strp_enabled) { 1c2133114d2d11 Jakub Kicinski 2022-05-18 1949 /* BPF may try to queue the skb */ e91de6afa81c10 John Fastabend 2020-05-29 1950 err = sk_psock_tls_strp_read(psock, skb); e91de6afa81c10 John Fastabend 2020-05-29 1951 if (err != __SK_PASS) { e91de6afa81c10 John Fastabend 2020-05-29 @1952 rxm->offset = rxm->offset + rxm->full_len; e91de6afa81c10 John Fastabend 2020-05-29 1953 rxm->full_len = 0; e91de6afa81c10 John Fastabend 2020-05-29 1954 if (err == __SK_DROP) e91de6afa81c10 John Fastabend 2020-05-29 1955 consume_skb(skb); e91de6afa81c10 John Fastabend 2020-05-29 1956 continue; e91de6afa81c10 John Fastabend 2020-05-29 1957 } e91de6afa81c10 John Fastabend 2020-05-29 1958 } e91de6afa81c10 John Fastabend 2020-05-29 1959 f940b6efb17257 Jakub Kicinski 2022-04-08 1960 if (partially_consumed) 692d7b5d1f9125 Vakul Garg 2019-01-16 1961 chunk = len; 94524d8fc965a7 Vakul Garg 2018-08-29 1962 692d7b5d1f9125 Vakul Garg 2019-01-16 1963 err = skb_copy_datagram_msg(skb, rxm->offset, 692d7b5d1f9125 Vakul Garg 2019-01-16 1964 msg, chunk); 06fa4c1bf464a9 Jakub Kicinski 2022-05-26 1965 if (err < 0) 06fa4c1bf464a9 Jakub Kicinski 2022-05-26 1966 goto put_on_rx_list_err; 692d7b5d1f9125 Vakul Garg 2019-01-16 1967 f940b6efb17257 Jakub Kicinski 2022-04-08 1968 if (is_peek) 257fd01208cd4c Jakub Kicinski 2022-05-25 1969 goto put_on_rx_list; f940b6efb17257 Jakub Kicinski 2022-04-08 1970 f940b6efb17257 Jakub Kicinski 2022-04-08 1971 if (partially_consumed) { f940b6efb17257 Jakub Kicinski 2022-04-08 1972 rxm->offset += chunk; f940b6efb17257 Jakub Kicinski 2022-04-08 1973 rxm->full_len -= chunk; 257fd01208cd4c Jakub Kicinski 2022-05-25 1974 goto put_on_rx_list; 692d7b5d1f9125 Vakul Garg 2019-01-16 1975 } 692d7b5d1f9125 Vakul Garg 2019-01-16 1976 } c46234ebb4d1ee Dave Watson 2018-03-22 1977 692d7b5d1f9125 Vakul Garg 2019-01-16 1978 decrypted += chunk; c46234ebb4d1ee Dave Watson 2018-03-22 1979 len -= chunk; c46234ebb4d1ee Dave Watson 2018-03-22 1980 465ea73535675e Jakub Kicinski 2022-04-08 1981 consume_skb(skb); 465ea73535675e Jakub Kicinski 2022-04-08 1982 f940b6efb17257 Jakub Kicinski 2022-04-08 1983 /* Return full control message to userspace before trying f940b6efb17257 Jakub Kicinski 2022-04-08 1984 * to parse another message type c46234ebb4d1ee Dave Watson 2018-03-22 1985 */ c46234ebb4d1ee Dave Watson 2018-03-22 1986 msg->msg_flags |= MSG_EOR; 3fe16edf6767de Vadim Fedorenko 2020-11-15 1987 if (control != TLS_RECORD_TYPE_DATA) f940b6efb17257 Jakub Kicinski 2022-04-08 1988 break; 04b25a5411f966 Jakub Kicinski 2019-05-24 1989 } c46234ebb4d1ee Dave Watson 2018-03-22 1990 c46234ebb4d1ee Dave Watson 2018-03-22 1991 recv_end: 7da18bcc5e4cfd Jakub Kicinski 2022-04-08 1992 if (async) { f314bfee81b1bf Jakub Kicinski 2022-04-11 1993 int ret, pending; 7da18bcc5e4cfd Jakub Kicinski 2022-04-08 1994 94524d8fc965a7 Vakul Garg 2018-08-29 1995 /* Wait for all previously submitted records to be decrypted */ 0cada33241d9de Vinay Kumar Yadav 2020-05-23 1996 spin_lock_bh(&ctx->decrypt_compl_lock); 37943f047bfb88 Jakub Kicinski 2022-04-08 1997 reinit_completion(&ctx->async_wait.completion); 0cada33241d9de Vinay Kumar Yadav 2020-05-23 1998 pending = atomic_read(&ctx->decrypt_pending); 0cada33241d9de Vinay Kumar Yadav 2020-05-23 1999 spin_unlock_bh(&ctx->decrypt_compl_lock); 0cada33241d9de Vinay Kumar Yadav 2020-05-23 2000 if (pending) { f314bfee81b1bf Jakub Kicinski 2022-04-11 2001 ret = crypto_wait_req(-EINPROGRESS, &ctx->async_wait); f314bfee81b1bf Jakub Kicinski 2022-04-11 2002 if (ret) { f314bfee81b1bf Jakub Kicinski 2022-04-11 2003 if (err >= 0 || err == -EINPROGRESS) f314bfee81b1bf Jakub Kicinski 2022-04-11 2004 err = ret; 692d7b5d1f9125 Vakul Garg 2019-01-16 2005 decrypted = 0; 692d7b5d1f9125 Vakul Garg 2019-01-16 2006 goto end; 94524d8fc965a7 Vakul Garg 2018-08-29 2007 } 94524d8fc965a7 Vakul Garg 2018-08-29 2008 } 0cada33241d9de Vinay Kumar Yadav 2020-05-23 2009 692d7b5d1f9125 Vakul Garg 2019-01-16 2010 /* Drain records from the rx_list & copy if required */ 692d7b5d1f9125 Vakul Garg 2019-01-16 2011 if (is_peek || is_kvec) 06554f4ffc2595 Jakub Kicinski 2022-04-08 2012 err = process_rx_list(ctx, msg, &control, copied, 692d7b5d1f9125 Vakul Garg 2019-01-16 2013 decrypted, false, is_peek); 692d7b5d1f9125 Vakul Garg 2019-01-16 2014 else 06554f4ffc2595 Jakub Kicinski 2022-04-08 2015 err = process_rx_list(ctx, msg, &control, 0, 692d7b5d1f9125 Vakul Garg 2019-01-16 2016 decrypted, true, is_peek); 4dcdd971b9c7a5 Jakub Kicinski 2022-04-11 2017 decrypted = max(err, 0); 94524d8fc965a7 Vakul Garg 2018-08-29 2018 } 94524d8fc965a7 Vakul Garg 2018-08-29 2019 692d7b5d1f9125 Vakul Garg 2019-01-16 2020 copied += decrypted; 692d7b5d1f9125 Vakul Garg 2019-01-16 2021 692d7b5d1f9125 Vakul Garg 2019-01-16 2022 end: c46234ebb4d1ee Dave Watson 2018-03-22 2023 release_sock(sk); d3b18ad31f93d0 John Fastabend 2018-10-13 2024 if (psock) d3b18ad31f93d0 John Fastabend 2018-10-13 2025 sk_psock_put(sk, psock); c46234ebb4d1ee Dave Watson 2018-03-22 2026 return copied ? : err; c46234ebb4d1ee Dave Watson 2018-03-22 2027 } c46234ebb4d1ee Dave Watson 2018-03-22 2028 :::::: The code at line 1952 was first introduced by commit :::::: e91de6afa81c10e9f855c5695eb9a53168d96b73 bpf: Fix running sk_skb program types with ktls :::::: TO: John Fastabend :::::: CC: Alexei Starovoitov -- 0-DAY CI Kernel Test Service https://01.org/lkp