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[openeuler:OLK-6.6 2381/2381] drivers/i2c/busses/i2c-zhaoxin-smbus.c:78:16: error: call to undeclared function 'inb'; ISO C99 and later do not support implicit function declarations
by kernel test robot 11 Jun '25

11 Jun '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: edaf3ccc9feb52d789c59499a6d681cdcd3fb9c5 commit: 08d91e70564c8af05a673fef3dbae0b2278529fd [2381/2381] i2c: smbus: Add support for Zhaoxin SMBUS controller config: x86_64-buildonly-randconfig-006-20250611 compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) rustc: rustc 1.73.0 (cc66ad468 2023-10-03) reproduce (this is a W=1 build): If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202506110323.W8vxCje1-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from drivers/i2c/busses/i2c-zhaoxin-smbus.c:12: In file included from include/linux/i2c.h:19: In file included from include/linux/regulator/consumer.h:35: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:20: In file included from include/linux/mm.h:2247: include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ >> drivers/i2c/busses/i2c-zhaoxin-smbus.c:78:16: error: call to undeclared function 'inb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 78 | smb->status = inb(smb->base + ZXSMB_STS); | ^ >> drivers/i2c/busses/i2c-zhaoxin-smbus.c:83:2: error: call to undeclared function 'outb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 83 | outb(smb->status, smb->base + ZXSMB_STS); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:96:3: error: call to undeclared function 'outb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 96 | outb(ZXSMB_KILL_PRG, smb->base + ZXSMB_CTL); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:111:15: error: call to undeclared function 'inb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 111 | u8 status = inb(smb->base + ZXSMB_STS); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:115:4: error: call to undeclared function 'outb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 115 | outb(status, smb->base + ZXSMB_STS); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:137:12: error: call to undeclared function 'inb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 137 | status = inb(smb->base + ZXSMB_STS); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:146:2: error: call to undeclared function 'outb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 146 | outb(status, smb->base + ZXSMB_STS); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:158:8: error: call to undeclared function 'inb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 158 | tmp = inb(base + ZXSMB_STS); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:160:3: error: call to undeclared function 'outb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 160 | outb(tmp, base + ZXSMB_STS); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:181:2: error: call to undeclared function 'outb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 181 | outb(tmp, base + ZXSMB_CTL); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:199:2: error: call to undeclared function 'outb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 199 | outb(0, smb->base + ZXSMB_CTL); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:220:4: error: call to undeclared function 'outb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 220 | outb(command, base + ZXSMB_CMD); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:246:3: error: call to undeclared function 'inb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 246 | inb(base + ZXSMB_CTL); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:259:2: error: call to undeclared function 'outb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 259 | outb(((addr & 0x7f) << 1) | read, base + ZXSMB_ADD); | ^ drivers/i2c/busses/i2c-zhaoxin-smbus.c:276:16: error: call to undeclared function 'inb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 276 | data->byte = inb(base + ZXSMB_DAT0); | ^ 1 warning and 15 errors generated. vim +/inb +78 drivers/i2c/busses/i2c-zhaoxin-smbus.c 73 74 static irqreturn_t zxsmb_irq_handle(int irq, void *dev_id) 75 { 76 struct zxsmb *smb = (struct zxsmb *)dev_id; 77 > 78 smb->status = inb(smb->base + ZXSMB_STS); 79 if ((smb->status & ZXSMB_STS_MASK) == 0) 80 return IRQ_NONE; 81 82 /* clear status */ > 83 outb(smb->status, smb->base + ZXSMB_STS); 84 complete(&smb->complete); 85 86 return IRQ_HANDLED; 87 } 88 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 2954/2954] drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:407:30: sparse: sparse: incorrect type in assignment (different base types)
by kernel test robot 11 Jun '25

11 Jun '25

Hi Zhongyuan, First bad commit (maybe != root cause): tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 90ff3e07cc268a8e40bd578dcc4907a3db419c52 commit: 695becd47b5fb077a9c94080f467eca7ee89ff8f [2954/2954] network_mgmt: Modified OLK5.10 ub compilation missing header files. config: arm64-randconfig-r133-20250610 compiler: aarch64-linux-gcc (GCC) 14.3.0 reproduce: If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202506110211.qecuZ8ix-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:311:5: sparse: sparse: symbol 'ip_notify_sysfs_create' was not declared. Should it be static? drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:340:6: sparse: sparse: symbol 'ip_notify_sysfs_destroy' was not declared. Should it be static? >> drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:407:30: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned char [usertype] mask @@ got restricted __be32 [usertype] netmask @@ drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:407:30: sparse: expected unsigned char [usertype] mask drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:407:30: sparse: got restricted __be32 [usertype] netmask drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:378:16: sparse: sparse: symbol 'ub_ipv4_create_ip_notify_pkt' was not declared. Should it be static? drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:444:30: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned char [usertype] mask @@ got restricted __be32 [usertype] netmask @@ drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:444:30: sparse: expected unsigned char [usertype] mask drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:444:30: sparse: got restricted __be32 [usertype] netmask drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:415:16: sparse: sparse: symbol 'ub_ipv6_create_ip_notify_pkt' was not declared. Should it be static? >> drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:498:29: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __be32 [usertype] netmask @@ got unsigned char ifa_prefixlen @@ drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:498:29: sparse: expected restricted __be32 [usertype] netmask drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:498:29: sparse: got unsigned char ifa_prefixlen >> drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:546:30: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __be32 [usertype] netmask @@ got unsigned int [usertype] prefix_len @@ drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:546:30: sparse: expected restricted __be32 [usertype] netmask drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c:546:30: sparse: got unsigned int [usertype] prefix_len vim +407 drivers/net/ub/dev/network_mgmt/./ip_notify/ip_notify.c 0f9f9f6603b274 Wenwu Yao 2023-07-20 377 0f9f9f6603b274 Wenwu Yao 2023-07-20 378 struct sk_buff *ub_ipv4_create_ip_notify_pkt(struct net_device *ndev, 0f9f9f6603b274 Wenwu Yao 2023-07-20 379 __be32 src_ip, const u8 *src_hw, 0f9f9f6603b274 Wenwu Yao 2023-07-20 380 __be32 netmask) 0f9f9f6603b274 Wenwu Yao 2023-07-20 381 { 0f9f9f6603b274 Wenwu Yao 2023-07-20 382 int hlen = LL_RESERVED_SPACE(ndev); 0f9f9f6603b274 Wenwu Yao 2023-07-20 383 int tlen = ndev->needed_tailroom; 0f9f9f6603b274 Wenwu Yao 2023-07-20 384 struct ip_notify_hdr *ipn_hdr_v4; 0f9f9f6603b274 Wenwu Yao 2023-07-20 385 struct sk_buff *skb; 0f9f9f6603b274 Wenwu Yao 2023-07-20 386 u8 dest_hw[UBL_ALEN]; 0f9f9f6603b274 Wenwu Yao 2023-07-20 387 0f9f9f6603b274 Wenwu Yao 2023-07-20 388 skb = alloc_skb(ip_notify_hdr_len() + hlen + tlen, GFP_ATOMIC); 0f9f9f6603b274 Wenwu Yao 2023-07-20 389 if (!skb) 0f9f9f6603b274 Wenwu Yao 2023-07-20 390 return NULL; 0f9f9f6603b274 Wenwu Yao 2023-07-20 391 0f9f9f6603b274 Wenwu Yao 2023-07-20 392 skb_reserve(skb, LL_RESERVED_SPACE(ndev)); 0f9f9f6603b274 Wenwu Yao 2023-07-20 393 skb_reset_network_header(skb); 0f9f9f6603b274 Wenwu Yao 2023-07-20 394 ipn_hdr_v4 = (struct ip_notify_hdr *)skb_put(skb, ip_notify_hdr_len()); 0f9f9f6603b274 Wenwu Yao 2023-07-20 395 memset(ipn_hdr_v4, 0, ip_notify_hdr_len()); 0f9f9f6603b274 Wenwu Yao 2023-07-20 396 skb->dev = ndev; 0f9f9f6603b274 Wenwu Yao 2023-07-20 397 skb->protocol = htons(ETH_P_UB); 0f9f9f6603b274 Wenwu Yao 2023-07-20 398 src_hw = ndev->dev_addr; 0f9f9f6603b274 Wenwu Yao 2023-07-20 399 memset(dest_hw, 0xff, UBL_ALEN); 0f9f9f6603b274 Wenwu Yao 2023-07-20 400 0f9f9f6603b274 Wenwu Yao 2023-07-20 401 /* fill the device header for the ipv4 notify frame */ 0f9f9f6603b274 Wenwu Yao 2023-07-20 402 ipn_hdr_v4->cfg = UB_NOIP_CFG_TYPE; 0f9f9f6603b274 Wenwu Yao 2023-07-20 403 ipn_hdr_v4->protocol = htons(SUB_PROTOCOL_IP_NOTIFY); 0f9f9f6603b274 Wenwu Yao 2023-07-20 404 memcpy(ipn_hdr_v4->dest_guid, dest_hw, UBL_ALEN); 0f9f9f6603b274 Wenwu Yao 2023-07-20 405 memcpy(ipn_hdr_v4->src_guid, ndev->dev_addr, UBL_ALEN); 0f9f9f6603b274 Wenwu Yao 2023-07-20 406 ipn_hdr_v4->pdu.ver = UB_PROTO_IPV4 << VER_SHIFT_4; /* IPv4 */ 0f9f9f6603b274 Wenwu Yao 2023-07-20 @407 ipn_hdr_v4->pdu.mask = netmask; 0f9f9f6603b274 Wenwu Yao 2023-07-20 408 ipn_hdr_v4->pdu.ipv4.ip = src_ip; 0f9f9f6603b274 Wenwu Yao 2023-07-20 409 0f9f9f6603b274 Wenwu Yao 2023-07-20 410 show_ip_notify_pkt_info(skb); 0f9f9f6603b274 Wenwu Yao 2023-07-20 411 0f9f9f6603b274 Wenwu Yao 2023-07-20 412 return skb; 0f9f9f6603b274 Wenwu Yao 2023-07-20 413 } 0f9f9f6603b274 Wenwu Yao 2023-07-20 414 0f9f9f6603b274 Wenwu Yao 2023-07-20 415 struct sk_buff *ub_ipv6_create_ip_notify_pkt(struct net_device *ndev, 0f9f9f6603b274 Wenwu Yao 2023-07-20 416 u8 *src_ip, const u8 *src_hw, 0f9f9f6603b274 Wenwu Yao 2023-07-20 417 __be32 netmask) 0f9f9f6603b274 Wenwu Yao 2023-07-20 418 { 0f9f9f6603b274 Wenwu Yao 2023-07-20 419 int hlen = LL_RESERVED_SPACE(ndev); 0f9f9f6603b274 Wenwu Yao 2023-07-20 420 int tlen = ndev->needed_tailroom; 0f9f9f6603b274 Wenwu Yao 2023-07-20 421 struct ip_notify_hdr *ipn_hdr_v6; 0f9f9f6603b274 Wenwu Yao 2023-07-20 422 struct sk_buff *skb; 0f9f9f6603b274 Wenwu Yao 2023-07-20 423 u8 dest_hw[UBL_ALEN]; 0f9f9f6603b274 Wenwu Yao 2023-07-20 424 0f9f9f6603b274 Wenwu Yao 2023-07-20 425 skb = alloc_skb(ip_notify_hdr_len() + hlen + tlen, GFP_ATOMIC); 0f9f9f6603b274 Wenwu Yao 2023-07-20 426 if (!skb) 0f9f9f6603b274 Wenwu Yao 2023-07-20 427 return NULL; 0f9f9f6603b274 Wenwu Yao 2023-07-20 428 0f9f9f6603b274 Wenwu Yao 2023-07-20 429 skb_reserve(skb, LL_RESERVED_SPACE(ndev)); 0f9f9f6603b274 Wenwu Yao 2023-07-20 430 skb_reset_network_header(skb); 0f9f9f6603b274 Wenwu Yao 2023-07-20 431 ipn_hdr_v6 = (struct ip_notify_hdr *)skb_put(skb, ip_notify_hdr_len()); 0f9f9f6603b274 Wenwu Yao 2023-07-20 432 memset(ipn_hdr_v6, 0, ip_notify_hdr_len()); 0f9f9f6603b274 Wenwu Yao 2023-07-20 433 skb->dev = ndev; 0f9f9f6603b274 Wenwu Yao 2023-07-20 434 skb->protocol = htons(ETH_P_UB); 0f9f9f6603b274 Wenwu Yao 2023-07-20 435 src_hw = ndev->dev_addr; 0f9f9f6603b274 Wenwu Yao 2023-07-20 436 memset(dest_hw, 0xff, UBL_ALEN); 0f9f9f6603b274 Wenwu Yao 2023-07-20 437 0f9f9f6603b274 Wenwu Yao 2023-07-20 438 /* fill the device header for the ip notify frame */ 0f9f9f6603b274 Wenwu Yao 2023-07-20 439 ipn_hdr_v6->cfg = UB_NOIP_CFG_TYPE; 0f9f9f6603b274 Wenwu Yao 2023-07-20 440 ipn_hdr_v6->protocol = htons(SUB_PROTOCOL_IP_NOTIFY); 0f9f9f6603b274 Wenwu Yao 2023-07-20 441 memcpy(ipn_hdr_v6->dest_guid, dest_hw, UBL_ALEN); 0f9f9f6603b274 Wenwu Yao 2023-07-20 442 memcpy(ipn_hdr_v6->src_guid, ndev->dev_addr, UBL_ALEN); 0f9f9f6603b274 Wenwu Yao 2023-07-20 443 ipn_hdr_v6->pdu.ver = UB_PROTO_IPV6 << VER_SHIFT_4; /* IPv6 */ 0f9f9f6603b274 Wenwu Yao 2023-07-20 444 ipn_hdr_v6->pdu.mask = netmask; 0f9f9f6603b274 Wenwu Yao 2023-07-20 445 memcpy(ipn_hdr_v6->pdu.ipv6.ip, src_ip, UBL_ALEN); 0f9f9f6603b274 Wenwu Yao 2023-07-20 446 0f9f9f6603b274 Wenwu Yao 2023-07-20 447 show_ip_notify_pkt_info(skb); 0f9f9f6603b274 Wenwu Yao 2023-07-20 448 0f9f9f6603b274 Wenwu Yao 2023-07-20 449 return skb; 0f9f9f6603b274 Wenwu Yao 2023-07-20 450 } 0f9f9f6603b274 Wenwu Yao 2023-07-20 451 0f9f9f6603b274 Wenwu Yao 2023-07-20 452 static void ub_update_tx_stats(int ptype, struct sk_buff *skb, int rc) 0f9f9f6603b274 Wenwu Yao 2023-07-20 453 { 0f9f9f6603b274 Wenwu Yao 2023-07-20 454 struct list_head *dev_list = ub_nm_get_dev_list(); 0f9f9f6603b274 Wenwu Yao 2023-07-20 455 struct net_device *ndev = skb->dev; 0f9f9f6603b274 Wenwu Yao 2023-07-20 456 struct ub_nm_device *nm_dev; 0f9f9f6603b274 Wenwu Yao 2023-07-20 457 0f9f9f6603b274 Wenwu Yao 2023-07-20 458 ub_nm_down_read(); 0f9f9f6603b274 Wenwu Yao 2023-07-20 459 list_for_each_entry(nm_dev, dev_list, nm_dev_list) 0f9f9f6603b274 Wenwu Yao 2023-07-20 460 if (nm_dev->ndev == ndev) 0f9f9f6603b274 Wenwu Yao 2023-07-20 461 goto out; 0f9f9f6603b274 Wenwu Yao 2023-07-20 462 ub_nm_up_read(); 0f9f9f6603b274 Wenwu Yao 2023-07-20 463 0f9f9f6603b274 Wenwu Yao 2023-07-20 464 return; 0f9f9f6603b274 Wenwu Yao 2023-07-20 465 0f9f9f6603b274 Wenwu Yao 2023-07-20 466 out: 0f9f9f6603b274 Wenwu Yao 2023-07-20 467 switch (rc) { 0f9f9f6603b274 Wenwu Yao 2023-07-20 468 case NETDEV_TX_OK: 0f9f9f6603b274 Wenwu Yao 2023-07-20 469 if (ptype == UB_PROTO_IPV4) 0f9f9f6603b274 Wenwu Yao 2023-07-20 470 atomic64_inc(&nm_dev->sys_ctx.ip_notify_ctx.stats.good_ipv4_notify_tx_cnt); 0f9f9f6603b274 Wenwu Yao 2023-07-20 471 else 0f9f9f6603b274 Wenwu Yao 2023-07-20 472 atomic64_inc(&nm_dev->sys_ctx.ip_notify_ctx.stats.good_ipv6_notify_tx_cnt); 0f9f9f6603b274 Wenwu Yao 2023-07-20 473 break; 0f9f9f6603b274 Wenwu Yao 2023-07-20 474 case NET_XMIT_DROP: 0f9f9f6603b274 Wenwu Yao 2023-07-20 475 case NETDEV_TX_BUSY: 0f9f9f6603b274 Wenwu Yao 2023-07-20 476 if (ptype == UB_PROTO_IPV4) 0f9f9f6603b274 Wenwu Yao 2023-07-20 477 atomic64_inc(&nm_dev->sys_ctx.ip_notify_ctx.stats.bad_ipv4_notify_tx_cnt); 0f9f9f6603b274 Wenwu Yao 2023-07-20 478 else 0f9f9f6603b274 Wenwu Yao 2023-07-20 479 atomic64_inc(&nm_dev->sys_ctx.ip_notify_ctx.stats.bad_ipv6_notify_tx_cnt); 0f9f9f6603b274 Wenwu Yao 2023-07-20 480 break; 0f9f9f6603b274 Wenwu Yao 2023-07-20 481 default: 0f9f9f6603b274 Wenwu Yao 2023-07-20 482 break; 0f9f9f6603b274 Wenwu Yao 2023-07-20 483 } 0f9f9f6603b274 Wenwu Yao 2023-07-20 484 ub_nm_up_read(); 0f9f9f6603b274 Wenwu Yao 2023-07-20 485 } 0f9f9f6603b274 Wenwu Yao 2023-07-20 486 0f9f9f6603b274 Wenwu Yao 2023-07-20 487 static void ub_xmit_ip_notify_pkt(int ptype, struct sk_buff *skb) 0f9f9f6603b274 Wenwu Yao 2023-07-20 488 { 0f9f9f6603b274 Wenwu Yao 2023-07-20 489 int rc; 0f9f9f6603b274 Wenwu Yao 2023-07-20 490 0f9f9f6603b274 Wenwu Yao 2023-07-20 491 rc = dev_queue_xmit(skb); 0f9f9f6603b274 Wenwu Yao 2023-07-20 492 ub_update_tx_stats(ptype, skb, rc); 0f9f9f6603b274 Wenwu Yao 2023-07-20 493 } 0f9f9f6603b274 Wenwu Yao 2023-07-20 494 0f9f9f6603b274 Wenwu Yao 2023-07-20 495 static void ub_ipv4_send_ip_notify(struct net_device *ndev, 0f9f9f6603b274 Wenwu Yao 2023-07-20 496 struct in_ifaddr *ifa) 0f9f9f6603b274 Wenwu Yao 2023-07-20 497 { 0f9f9f6603b274 Wenwu Yao 2023-07-20 @498 __be32 netmask = ifa->ifa_prefixlen; 0f9f9f6603b274 Wenwu Yao 2023-07-20 499 const u8 *src_hw = ndev->dev_addr; 0f9f9f6603b274 Wenwu Yao 2023-07-20 500 __be32 src_ip = ifa->ifa_address; 0f9f9f6603b274 Wenwu Yao 2023-07-20 501 struct sk_buff *skb; 0f9f9f6603b274 Wenwu Yao 2023-07-20 502 0f9f9f6603b274 Wenwu Yao 2023-07-20 503 skb = ub_ipv4_create_ip_notify_pkt(ndev, src_ip, src_hw, netmask); 0f9f9f6603b274 Wenwu Yao 2023-07-20 504 if (!skb) { 0f9f9f6603b274 Wenwu Yao 2023-07-20 505 netdev_err(ndev, "failed to create ip notify pkt.\n"); 0f9f9f6603b274 Wenwu Yao 2023-07-20 506 return; 0f9f9f6603b274 Wenwu Yao 2023-07-20 507 } 0f9f9f6603b274 Wenwu Yao 2023-07-20 508 0f9f9f6603b274 Wenwu Yao 2023-07-20 509 ub_xmit_ip_notify_pkt(UB_PROTO_IPV4, skb); 0f9f9f6603b274 Wenwu Yao 2023-07-20 510 } 0f9f9f6603b274 Wenwu Yao 2023-07-20 511 0f9f9f6603b274 Wenwu Yao 2023-07-20 512 int ub_ipv4_notify_event(struct notifier_block *nb, unsigned long event, 0f9f9f6603b274 Wenwu Yao 2023-07-20 513 void *ptr) 0f9f9f6603b274 Wenwu Yao 2023-07-20 514 { 0f9f9f6603b274 Wenwu Yao 2023-07-20 515 struct net_device *event_ndev; 0f9f9f6603b274 Wenwu Yao 2023-07-20 516 struct in_device *in_dev; 0f9f9f6603b274 Wenwu Yao 2023-07-20 517 struct in_ifaddr *ifa; 0f9f9f6603b274 Wenwu Yao 2023-07-20 518 0f9f9f6603b274 Wenwu Yao 2023-07-20 519 ifa = (struct in_ifaddr *)ptr; 0f9f9f6603b274 Wenwu Yao 2023-07-20 520 event_ndev = ifa->ifa_dev->dev; 0f9f9f6603b274 Wenwu Yao 2023-07-20 521 0f9f9f6603b274 Wenwu Yao 2023-07-20 522 if (event_ndev->type != ARPHRD_UB) 0f9f9f6603b274 Wenwu Yao 2023-07-20 523 return NOTIFY_DONE; 0f9f9f6603b274 Wenwu Yao 2023-07-20 524 0f9f9f6603b274 Wenwu Yao 2023-07-20 525 netdev_info(event_ndev, "ub_ipv4_event: 0x%lx\n", event); 0f9f9f6603b274 Wenwu Yao 2023-07-20 526 0f9f9f6603b274 Wenwu Yao 2023-07-20 527 if (event != NETDEV_UP) 0f9f9f6603b274 Wenwu Yao 2023-07-20 528 return NOTIFY_DONE; 0f9f9f6603b274 Wenwu Yao 2023-07-20 529 0f9f9f6603b274 Wenwu Yao 2023-07-20 530 in_dev = __in_dev_get_rtnl(event_ndev); 0f9f9f6603b274 Wenwu Yao 2023-07-20 531 if (!IN_DEV_ARP_NOTIFY(in_dev)) 0f9f9f6603b274 Wenwu Yao 2023-07-20 532 return NOTIFY_DONE; 0f9f9f6603b274 Wenwu Yao 2023-07-20 533 0f9f9f6603b274 Wenwu Yao 2023-07-20 534 if (event_ndev->flags & IFF_UP) { 0f9f9f6603b274 Wenwu Yao 2023-07-20 535 netdev_info(event_ndev, "ub_ipv4_send_ip_notify.\n"); 0f9f9f6603b274 Wenwu Yao 2023-07-20 536 ub_ipv4_send_ip_notify(event_ndev, ifa); 0f9f9f6603b274 Wenwu Yao 2023-07-20 537 } 0f9f9f6603b274 Wenwu Yao 2023-07-20 538 0f9f9f6603b274 Wenwu Yao 2023-07-20 539 return NOTIFY_DONE; 0f9f9f6603b274 Wenwu Yao 2023-07-20 540 } 0f9f9f6603b274 Wenwu Yao 2023-07-20 541 0f9f9f6603b274 Wenwu Yao 2023-07-20 542 static void ub_ipv6_send_ip_notify(struct net_device *ndev, 0f9f9f6603b274 Wenwu Yao 2023-07-20 543 struct inet6_ifaddr *ifa6) 0f9f9f6603b274 Wenwu Yao 2023-07-20 544 { 0f9f9f6603b274 Wenwu Yao 2023-07-20 545 const u8 *src_hw = ndev->dev_addr; 0f9f9f6603b274 Wenwu Yao 2023-07-20 @546 __be32 netmask = ifa6->prefix_len; 0f9f9f6603b274 Wenwu Yao 2023-07-20 547 struct sk_buff *skb; 0f9f9f6603b274 Wenwu Yao 2023-07-20 548 u8 src_ip[IPV6_ADDR_LEN]; 0f9f9f6603b274 Wenwu Yao 2023-07-20 549 0f9f9f6603b274 Wenwu Yao 2023-07-20 550 memcpy(src_ip, &ifa6->addr, IPV6_ADDR_LEN); 0f9f9f6603b274 Wenwu Yao 2023-07-20 551 skb = ub_ipv6_create_ip_notify_pkt(ndev, src_ip, src_hw, netmask); 0f9f9f6603b274 Wenwu Yao 2023-07-20 552 if (!skb) { 0f9f9f6603b274 Wenwu Yao 2023-07-20 553 netdev_err(ndev, "failed to create ipv6 notify pkt.\n"); 0f9f9f6603b274 Wenwu Yao 2023-07-20 554 return; 0f9f9f6603b274 Wenwu Yao 2023-07-20 555 } 0f9f9f6603b274 Wenwu Yao 2023-07-20 556 0f9f9f6603b274 Wenwu Yao 2023-07-20 557 ub_xmit_ip_notify_pkt(UB_PROTO_IPV6, skb); 0f9f9f6603b274 Wenwu Yao 2023-07-20 558 } 0f9f9f6603b274 Wenwu Yao 2023-07-20 559 :::::: The code at line 407 was first introduced by commit :::::: 0f9f9f6603b27412118019e51cf8e6d8e0422707 network_mgmt: Support IP notify Protocol. :::::: TO: Wenwu Yao <yaowenwu1(a)huawei.com> :::::: CC: Jeiwei Li <lijiewei5(a)huawei.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-5.10 2954/2954] kernel/sched/bpf_sched.c:158:5: warning: "CONFIG_FAIR_GROUP_SCHED" is not defined, evaluates to 0
by kernel test robot 10 Jun '25

10 Jun '25

Hi Chen, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 90ff3e07cc268a8e40bd578dcc4907a3db419c52 commit: 28b91df0178b108df4cc6ded1dfb68b8c39f5476 [2954/2954] sched: programmable: Add convenient helper functions to convert sched entity config: arm64-randconfig-r133-20250610 compiler: aarch64-linux-gcc (GCC) 14.3.0 reproduce: If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202506102302.7m25k19G-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/sched/bpf_sched.c: In function '____bpf_sched_entity_to_tg': >> kernel/sched/bpf_sched.c:158:5: warning: "CONFIG_FAIR_GROUP_SCHED" is not defined, evaluates to 0 [-Wundef] 158 | #if CONFIG_FAIR_GROUP_SCHED | ^~~~~~~~~~~~~~~~~~~~~~~ sparse warnings: (new ones prefixed by >>) >> kernel/sched/bpf_sched.c:158:5: sparse: sparse: undefined preprocessor identifier 'CONFIG_FAIR_GROUP_SCHED' vim +/CONFIG_FAIR_GROUP_SCHED +158 kernel/sched/bpf_sched.c 155 156 BPF_CALL_1(bpf_sched_entity_to_tg, struct sched_entity *, se) 157 { > 158 #if CONFIG_FAIR_GROUP_SCHED 159 if (!entity_is_task(se)) { 160 struct task_group *tg = group_cfs_rq(se)->tg; 161 162 return (unsigned long)tg; 163 } 164 #endif 165 166 return (unsigned long)NULL; 167 } 168 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-5.10 00/28] OLK-5.10 Bperf
by Xiaomeng Zhang 10 Jun '25

10 Jun '25

Ian Rogers (1): perf test bpf-counters: Add test for BPF event modifier Namhyung Kim (9): bpf: Allow bpf_get_current_ancestor_cgroup_id for tracing perf core: Factor out __perf_sw_event_sched perf core: Add PERF_COUNT_SW_CGROUP_SWITCHES event perf tools: Add 'cgroup-switches' software event perf tools: Add read_cgroup_id() function perf tools: Add cgroup_is_v2() helper perf bpf_counter: Move common functions to bpf_counter.h perf stat: Enable BPF counter with --for-each-cgroup perf stat: Fix BPF program section name Song Liu (13): bpftool: Add Makefile target bootstrap perf build: Support build BPF skeletons with perf perf stat: Enable counting events for BPF programs perf stat: Introduce 'bperf' to share hardware PMCs with BPF perf stat: Measure 't0' and 'ref_time' after enable_counters() perf util: Move bpf_perf definitions to a libperf header perf bpf: check perf_attr_map is compatible with the perf binary perf stat: Introduce config stat.bpf-counter-events perf stat: Introduce ':b' modifier perf stat: Introduce bpf_counter_ops->disable() perf bpf: Fix building perf with BUILD_BPF_SKEL=1 by default in more distros perf bpf_skel: Do not use typedef to avoid error on old clang perf test: Add a shell test for 'perf stat --bpf-counters' new option Tengda Wu (2): perf stat: Support inherit events during fork() for bperf perf test: Use sqrtloop workload to test bperf event Veronika Molnarova (1): perf test stat_bpf_counter.sh: Stabilize the test results Xiaomeng Zhang (2): perf stat: Increase perf_attr_map entries perf stat: Fix incorrect display of bperf when event count is 0 include/linux/perf_event.h | 40 +- include/uapi/linux/perf_event.h | 1 + kernel/trace/bpf_trace.c | 2 + tools/bpf/bpftool/Makefile | 2 + tools/build/Makefile.feature | 4 +- tools/include/uapi/linux/perf_event.h | 1 + tools/lib/perf/include/perf/bpf_perf.h | 32 + tools/perf/Documentation/perf-stat.txt | 31 + tools/perf/Makefile.config | 9 + tools/perf/Makefile.perf | 65 +- tools/perf/builtin-stat.c | 110 ++- tools/perf/tests/shell/stat_bpf_counters.sh | 74 ++ tools/perf/util/Build | 2 + tools/perf/util/bpf_counter.c | 832 ++++++++++++++++++ tools/perf/util/bpf_counter.h | 131 +++ tools/perf/util/bpf_counter_cgroup.c | 307 +++++++ tools/perf/util/bpf_skel/.gitignore | 3 + tools/perf/util/bpf_skel/bperf_cgroup.bpf.c | 191 ++++ tools/perf/util/bpf_skel/bperf_follower.bpf.c | 167 ++++ tools/perf/util/bpf_skel/bperf_leader.bpf.c | 55 ++ tools/perf/util/bpf_skel/bperf_u.h | 19 + .../util/bpf_skel/bpf_prog_profiler.bpf.c | 93 ++ tools/perf/util/cgroup.c | 47 + tools/perf/util/cgroup.h | 13 + tools/perf/util/config.c | 4 + tools/perf/util/evlist.c | 4 + tools/perf/util/evsel.c | 27 + tools/perf/util/evsel.h | 32 + tools/perf/util/parse-events.c | 12 +- tools/perf/util/parse-events.l | 3 +- tools/perf/util/python.c | 27 + tools/perf/util/stat-display.c | 4 +- tools/perf/util/stat.c | 2 +- tools/perf/util/target.c | 34 +- tools/perf/util/target.h | 8 + tools/scripts/Makefile.include | 1 + 36 files changed, 2344 insertions(+), 45 deletions(-) create mode 100644 tools/lib/perf/include/perf/bpf_perf.h create mode 100755 tools/perf/tests/shell/stat_bpf_counters.sh create mode 100644 tools/perf/util/bpf_counter.c create mode 100644 tools/perf/util/bpf_counter.h create mode 100644 tools/perf/util/bpf_counter_cgroup.c create mode 100644 tools/perf/util/bpf_skel/.gitignore create mode 100644 tools/perf/util/bpf_skel/bperf_cgroup.bpf.c create mode 100644 tools/perf/util/bpf_skel/bperf_follower.bpf.c create mode 100644 tools/perf/util/bpf_skel/bperf_leader.bpf.c create mode 100644 tools/perf/util/bpf_skel/bperf_u.h create mode 100644 tools/perf/util/bpf_skel/bpf_prog_profiler.bpf.c -- 2.34.1

2 29

[openeuler:OLK-5.10 2954/2954] arch/arm64/mm/pmem_reserve.c:11:17: sparse: sparse: symbol 'pmem_res' was not declared. Should it be static?
by kernel test robot 10 Jun '25

10 Jun '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 90ff3e07cc268a8e40bd578dcc4907a3db419c52 commit: db4cd75bc674e6f473c0a7303b1744155352882c [2954/2954] arm64: register persistent memory via protected memory config: arm64-randconfig-r133-20250610 (https://download.01.org/0day-ci/archive/20250610/202506101929.qhZqxH6c-lkp@…) compiler: aarch64-linux-gcc (GCC) 14.3.0 reproduce: (https://download.01.org/0day-ci/archive/20250610/202506101929.qhZqxH6c-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202506101929.qhZqxH6c-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) vim +/pmem_res +11 arch/arm64/mm/pmem_reserve.c 8 9 #define MAX_REGIONS 8 10 static int pmem_res_cnt; > 11 struct resource pmem_res[MAX_REGIONS]; 12 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH] arm64: Add feature detection for fine grained traps
by frenkjason 10 Jun '25

10 Jun '25

From: Mark Brown <broonie(a)kernel.org> In order to allow us to have shared code for managing fine grained traps for KVM guests add it as a detected feature rather than relying on it being a dependency of other features. Acked-by: Catalin Marinas <catalin.marinas(a)arm.com> Reviewed-by: Eric Auger <eric.auger(a)redhat.com> Signed-off-by: Mark Brown <broonie(a)kernel.org> [maz: converted to ARM64_CPUID_FIELDS()] Link: https://lore.kernel.org/r/20230301-kvm-arm64-fgt-v4-1-1bf8d235ac1f@kernel.o… Reviewed-by: Zenghui Yu <yuzenghui(a)huawei.com> Reviewed-by: Miguel Luis <miguel.luis(a)oracle.com> Reviewed-by: Jing Zhang <jingzhangos(a)google.com> Signed-off-by: Marc Zyngier <maz(a)kernel.org> Link: https://lore.kernel.org/r/20230815183903.2735724-10-maz@kernel.org Conflicts: arch/arm64/include/asm/cpucaps.h arch/arm64/kernel/cpufeature.c Signed-off-by: frankyj915 <yangjieyj.yang(a)huawei.com> --- arch/arm64/include/asm/cpucaps.h | 1 + arch/arm64/kernel/cpufeature.c | 10 ++++++++++ 2 files changed, 11 insertions(+) diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h index 3107f4a6942d..5999133d9a06 100644 --- a/arch/arm64/include/asm/cpucaps.h +++ b/arch/arm64/include/asm/cpucaps.h @@ -65,6 +65,7 @@ #define ARM64_WORKAROUND_HISILICON_ERRATUM_162100125 55 #define ARM64_WORKAROUND_HISILICON_ERRATUM_162100602 56 #define ARM64_HAS_TIDCP1 57 +#define ARM64_HAS_FGT 58 #define ARM64_NCAPS 80 diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index ccbce957101a..c82529dffcc7 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1645,6 +1645,16 @@ static const struct arm64_cpu_capabilities arm64_features[] = { .matches = has_cpuid_feature, .cpu_enable = cpu_trap_el0_impdef, }, + { + .desc = "Fine Grained Traps", + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .capability = ARM64_HAS_FGT, + .matches = has_cpuid_feature, + .sys_reg = SYS_ID_AA64MMFR0_EL1, + .field_pos = ID_AA64MMFR0_FGT_SHIFT, + .sign = FTR_UNSIGNED, + .min_field_value = 1, + }, {}, }; -- 2.25.1

1 0

[PATCH] arm64: add HWCAP for FEAT_HBC (hinted conditional branches)
by frenkjason 10 Jun '25

10 Jun '25

From: Joey Gouly <joey.gouly(a)arm.com> Add a HWCAP for FEAT_HBC, so that userspace can make a decision on using this feature. Signed-off-by: Joey Gouly <joey.gouly(a)arm.com> Cc: Catalin Marinas <catalin.marinas(a)arm.com> Cc: Will Deacon <will(a)kernel.org> Link: https://lore.kernel.org/r/20230804143746.3900803-2-joey.gouly@arm.com Signed-off-by: Will Deacon <will(a)kernel.org> Conflicts: arch/arm64/include/asm/hwcap.h arch/arm64/include/asm/sysreg.h arch/arm64/include/uapi/asm/hwcap.h arch/arm64/kernel/cpufeature.c arch/arm64/kernel/cpuinfo.c Signed-off-by: frankyj915 <yangjieyj.yang(a)huawei.com> --- arch/arm64/include/asm/hwcap.h | 1 + arch/arm64/include/asm/sysreg.h | 1 + arch/arm64/include/uapi/asm/hwcap.h | 1 + arch/arm64/kernel/cpufeature.c | 1 + arch/arm64/kernel/cpuinfo.c | 1 + 5 files changed, 5 insertions(+) diff --git a/arch/arm64/include/asm/hwcap.h b/arch/arm64/include/asm/hwcap.h index 98b9359ceff1..6a4446bcae8b 100644 --- a/arch/arm64/include/asm/hwcap.h +++ b/arch/arm64/include/asm/hwcap.h @@ -88,6 +88,7 @@ #define KERNEL_HWCAP_FRINT __khwcap2_feature(FRINT) #define KERNEL_HWCAP_ECV __khwcap2_feature(ECV) #define KERNEL_HWCAP_DGH __khwcap2_feature(DGH) +#define KERNEL_HWCAP_HBC __khwcap2_feature(HBC) /* * This yields a mask that user programs can use to figure out what diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index e579e49a304a..0f97d1c7fe8c 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -591,6 +591,7 @@ /* id_aa64isar2 */ #define ID_AA64ISAR2_CLEARBHB_SHIFT 28 +#define ID_AA64ISAR2_BC_SHIFT 20 #define ID_AA64ISAR2_RPRES_SHIFT 4 #define ID_AA64ISAR2_WFXT_SHIFT 0 diff --git a/arch/arm64/include/uapi/asm/hwcap.h b/arch/arm64/include/uapi/asm/hwcap.h index f36f9eb8dac2..894e5406d641 100644 --- a/arch/arm64/include/uapi/asm/hwcap.h +++ b/arch/arm64/include/uapi/asm/hwcap.h @@ -67,5 +67,6 @@ #define HWCAP2_FRINT (1 << 8) #define HWCAP2_ECV (1 << 9) #define HWCAP2_DGH (1 << 10) +#define HWCAP2_HBC (1UL << 44) #endif /* _UAPI__ASM_HWCAP_H */ diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index cc50fd0bac99..ccbce957101a 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1752,6 +1752,7 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = { HWCAP_MULTI_CAP(ptr_auth_hwcap_gen_matches, CAP_HWCAP, KERNEL_HWCAP_PACG), #endif HWCAP_CAP(SYS_ID_AA64MMFR0_EL1, ID_AA64MMFR0_ECV_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_ECV), + HWCAP_CAP(SYS_ID_AA64ISAR2_EL1, ID_AA64ISAR2_BC_SHIFT, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_HBC), {}, }; diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c index d4c1e6eff56f..d3b1c120e28f 100644 --- a/arch/arm64/kernel/cpuinfo.c +++ b/arch/arm64/kernel/cpuinfo.c @@ -88,6 +88,7 @@ static const char *const hwcap_str[] = { "frint", "ecv", "dgh", + "hbc", NULL }; -- 2.25.1

1 0

[PATCH] arm64: trap implementation defined functionality in userspace
by frenkjason 10 Jun '25

10 Jun '25

From: Kristina Martsenko <kristina.martsenko(a)arm.com> The Arm v8.8 extension adds a new control FEAT_TIDCP1 that allows the kernel to disable all implementation-defined system registers and instructions in userspace. This can improve robustness against covert channels between processes, for example in cases where the firmware or hardware didn't disable that functionality by default. The kernel does not currently support any implementation-defined features, as there are no hwcaps for any such features, so disable all imp-def features unconditionally. Any use of imp-def instructions will result in a SIGILL being delivered to the process (same as for undefined instructions). Signed-off-by: Kristina Martsenko <kristina.martsenko(a)arm.com> Link: https://lore.kernel.org/r/20220622115424.683520-1-kristina.martsenko@arm.com Signed-off-by: Will Deacon <will(a)kernel.org> Conflicts: arch/arm64/include/asm/sysreg.h arch/arm64/kernel/cpufeature.c arch/arm64/include/asm/cpucaps.h Signed-off-by: frankyj915 <yangjieyj.yang(a)huawei.com> --- arch/arm64/include/asm/cpucaps.h | 1 + arch/arm64/include/asm/sysreg.h | 5 +++++ arch/arm64/kernel/cpufeature.c | 17 +++++++++++++++++ 3 files changed, 23 insertions(+) diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h index 163a38107d3d..3107f4a6942d 100644 --- a/arch/arm64/include/asm/cpucaps.h +++ b/arch/arm64/include/asm/cpucaps.h @@ -64,6 +64,7 @@ #define ARM64_WORKAROUND_HISILICON_1980005 54 #define ARM64_WORKAROUND_HISILICON_ERRATUM_162100125 55 #define ARM64_WORKAROUND_HISILICON_ERRATUM_162100602 56 +#define ARM64_HAS_TIDCP1 57 #define ARM64_NCAPS 80 diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 60c6affb9135..e579e49a304a 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -520,6 +520,7 @@ #endif /* SCTLR_EL1 specific flags. */ +#define SCTLR_EL1_TIDCP (BIT(63)) #define SCTLR_EL1_UCI (BIT(26)) #define SCTLR_EL1_E0E (BIT(24)) #define SCTLR_EL1_SPAN (BIT(23)) @@ -678,6 +679,7 @@ /* id_aa64mmfr1 */ #define ID_AA64MMFR1_ECBHB_SHIFT 60 +#define ID_AA64MMFR1_TIDCP1_SHIFT 52 #define ID_AA64MMFR1_PAN_SHIFT 20 #define ID_AA64MMFR1_LOR_SHIFT 16 #define ID_AA64MMFR1_HPD_SHIFT 12 @@ -688,6 +690,9 @@ #define ID_AA64MMFR1_VMIDBITS_8 0 #define ID_AA64MMFR1_VMIDBITS_16 2 +#define ID_AA64MMFR1_TIDCP1_NI 0 +#define ID_AA64MMFR1_TIDCP1_IMP 1 + /* id_aa64mmfr2 */ #define ID_AA64MMFR2_TTL_SHIFT 48 #define ID_AA64MMFR2_FWB_SHIFT 40 diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 6c0cdac84fb6..cc50fd0bac99 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -228,6 +228,7 @@ static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = { }; static const struct arm64_ftr_bits ftr_id_aa64mmfr1[] = { + ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_TIDCP1_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_PAN_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_LOR_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_HPD_SHIFT, 4, 0), @@ -1298,6 +1299,11 @@ static void elf_hwcap_fixup(void) #endif /* ARM64_ERRATUM_1742098 */ } +static void cpu_trap_el0_impdef(const struct arm64_cpu_capabilities *__unused) +{ + sysreg_clear_set(sctlr_el1, 0, SCTLR_EL1_TIDCP); +} + static const struct arm64_cpu_capabilities arm64_features[] = { { .desc = "GIC system register CPU interface", @@ -1628,6 +1634,17 @@ static const struct arm64_cpu_capabilities arm64_features[] = { .min_field_value = 1, }, #endif + { + .desc = "Trap EL0 IMPLEMENTATION DEFINED functionality", + .capability = ARM64_HAS_TIDCP1, + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .sys_reg = SYS_ID_AA64MMFR1_EL1, + .sign = FTR_UNSIGNED, + .field_pos = ID_AA64MMFR1_TIDCP1_SHIFT, + .min_field_value = ID_AA64MMFR1_TIDCP1_IMP, + .matches = has_cpuid_feature, + .cpu_enable = cpu_trap_el0_impdef, + }, {}, }; -- 2.25.1

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[PATCH OLK-6.6 0/2] Fix watchdog false positive problem
by Luo Gengkun 10 Jun '25

10 Jun '25

Luo Gengkun (1): [Backport] watchdog: fix watchdog may detect false positive of softlockup Nysal Jan K.A (1): [Backport] watchdog: fix the SOFTLOCKUP_DETECTOR=n case kernel/watchdog.c | 41 +++++++++++++++++++++++++++-------------- 1 file changed, 27 insertions(+), 14 deletions(-) -- 2.34.1

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[PATCH 1/3] arm64: trap implementation defined functionality in userspace
by frenkjason 10 Jun '25

10 Jun '25

From: Kristina Martsenko <kristina.martsenko(a)arm.com> The Arm v8.8 extension adds a new control FEAT_TIDCP1 that allows the kernel to disable all implementation-defined system registers and instructions in userspace. This can improve robustness against covert channels between processes, for example in cases where the firmware or hardware didn't disable that functionality by default. The kernel does not currently support any implementation-defined features, as there are no hwcaps for any such features, so disable all imp-def features unconditionally. Any use of imp-def instructions will result in a SIGILL being delivered to the process (same as for undefined instructions). Signed-off-by: Kristina Martsenko <kristina.martsenko(a)arm.com> Link: https://lore.kernel.org/r/20220622115424.683520-1-kristina.martsenko@arm.com Signed-off-by: Will Deacon <will(a)kernel.org> Conflicts: arch/arm64/include/asm/sysreg.h arch/arm64/kernel/cpufeature.c arch/arm64/include/asm/cpucaps.h Signed-off-by: frankyj915 <yangjieyj.yang(a)huawei.com> --- arch/arm64/include/asm/cpucaps.h | 1 + arch/arm64/include/asm/sysreg.h | 5 +++++ arch/arm64/kernel/cpufeature.c | 17 +++++++++++++++++ 3 files changed, 23 insertions(+) diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h index 163a38107d3d..3107f4a6942d 100644 --- a/arch/arm64/include/asm/cpucaps.h +++ b/arch/arm64/include/asm/cpucaps.h @@ -64,6 +64,7 @@ #define ARM64_WORKAROUND_HISILICON_1980005 54 #define ARM64_WORKAROUND_HISILICON_ERRATUM_162100125 55 #define ARM64_WORKAROUND_HISILICON_ERRATUM_162100602 56 +#define ARM64_HAS_TIDCP1 57 #define ARM64_NCAPS 80 diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 60c6affb9135..e579e49a304a 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -520,6 +520,7 @@ #endif /* SCTLR_EL1 specific flags. */ +#define SCTLR_EL1_TIDCP (BIT(63)) #define SCTLR_EL1_UCI (BIT(26)) #define SCTLR_EL1_E0E (BIT(24)) #define SCTLR_EL1_SPAN (BIT(23)) @@ -678,6 +679,7 @@ /* id_aa64mmfr1 */ #define ID_AA64MMFR1_ECBHB_SHIFT 60 +#define ID_AA64MMFR1_TIDCP1_SHIFT 52 #define ID_AA64MMFR1_PAN_SHIFT 20 #define ID_AA64MMFR1_LOR_SHIFT 16 #define ID_AA64MMFR1_HPD_SHIFT 12 @@ -688,6 +690,9 @@ #define ID_AA64MMFR1_VMIDBITS_8 0 #define ID_AA64MMFR1_VMIDBITS_16 2 +#define ID_AA64MMFR1_TIDCP1_NI 0 +#define ID_AA64MMFR1_TIDCP1_IMP 1 + /* id_aa64mmfr2 */ #define ID_AA64MMFR2_TTL_SHIFT 48 #define ID_AA64MMFR2_FWB_SHIFT 40 diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 6c0cdac84fb6..cc50fd0bac99 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -228,6 +228,7 @@ static const struct arm64_ftr_bits ftr_id_aa64mmfr0[] = { }; static const struct arm64_ftr_bits ftr_id_aa64mmfr1[] = { + ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_TIDCP1_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_PAN_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_LOR_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR1_HPD_SHIFT, 4, 0), @@ -1298,6 +1299,11 @@ static void elf_hwcap_fixup(void) #endif /* ARM64_ERRATUM_1742098 */ } +static void cpu_trap_el0_impdef(const struct arm64_cpu_capabilities *__unused) +{ + sysreg_clear_set(sctlr_el1, 0, SCTLR_EL1_TIDCP); +} + static const struct arm64_cpu_capabilities arm64_features[] = { { .desc = "GIC system register CPU interface", @@ -1628,6 +1634,17 @@ static const struct arm64_cpu_capabilities arm64_features[] = { .min_field_value = 1, }, #endif + { + .desc = "Trap EL0 IMPLEMENTATION DEFINED functionality", + .capability = ARM64_HAS_TIDCP1, + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .sys_reg = SYS_ID_AA64MMFR1_EL1, + .sign = FTR_UNSIGNED, + .field_pos = ID_AA64MMFR1_TIDCP1_SHIFT, + .min_field_value = ID_AA64MMFR1_TIDCP1_IMP, + .matches = has_cpuid_feature, + .cpu_enable = cpu_trap_el0_impdef, + }, {}, }; -- 2.25.1

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