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[openeuler:OLK-5.10 3386/3386] arch/x86/mm/kasan_init_64.c:128:15: warning: variable 'p' set but not used
by kernel test robot 09 Dec '25

09 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 69d9543977fd7abe8b555406c7a3e5d64d8292f8 commit: 68ee705da160d123656dcbf9ebd449fb77b54bc0 [3386/3386] scripts: kernel-doc: Fix syntax error due to undeclared args variable config: x86_64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20251208/202512082005.aJ6IUacC-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251208/202512082005.aJ6IUacC-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/202512082005.aJ6IUacC-lkp@intel.com/ All warnings (new ones prefixed by >>): arch/x86/mm/kasan_init_64.c: In function 'kasan_populate_pgd': >> arch/x86/mm/kasan_init_64.c:128:15: warning: variable 'p' set but not used [-Wunused-but-set-variable] 128 | void *p; | ^ arch/x86/mm/kasan_init_64.c: In function 'kasan_shallow_populate_pgds': arch/x86/mm/kasan_init_64.c:270:15: warning: variable 'p' set but not used [-Wunused-but-set-variable] 270 | void *p; | ^ -- lib/test_blackhole_dev.c: In function 'test_blackholedev_init': >> lib/test_blackhole_dev.c:32:24: warning: variable 'ethh' set but not used [-Wunused-but-set-variable] 32 | struct ethhdr *ethh; | ^~~~ -- >> drivers/acpi/cppc_acpi.c:450: warning: Function parameter or member 'cpc_pptr' not described in '__acpi_get_psd_map' drivers/acpi/cppc_acpi.c:700: warning: Function parameter or member 'pcc_ss_id' not described in 'pcc_data_alloc' drivers/acpi/cppc_acpi.c:1566: warning: Function parameter or member 'cpu_num' not described in 'cppc_get_transition_latency' -- >> net/netfilter/nf_tables_api.c:9162: warning: Function parameter or member 'preg' not described in 'nft_parse_register' vim +/p +128 arch/x86/mm/kasan_init_64.c 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 124 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 125 static void __init kasan_populate_pgd(pgd_t *pgd, unsigned long addr, 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 126 unsigned long end, int nid) 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 127 { 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 @128 void *p; 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 129 p4d_t *p4d; 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 130 unsigned long next; 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 131 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 132 if (pgd_none(*pgd)) { 0d39e2669d7b0f Andrey Ryabinin 2018-01-10 133 p = early_alloc(PAGE_SIZE, nid, true); 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 134 pgd_populate(&init_mm, pgd, p); 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 135 } 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 136 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 137 p4d = p4d_offset(pgd, addr); 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 138 do { 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 139 next = p4d_addr_end(addr, end); 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 140 kasan_populate_p4d(p4d, addr, next, nid); 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 141 } while (p4d++, addr = next, addr != end); 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 142 } 2aeb07365bcd48 Andrey Ryabinin 2017-11-15 143 :::::: The code at line 128 was first introduced by commit :::::: 2aeb07365bcd489620f71390a7d2031cd4dfb83e x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow :::::: TO: Andrey Ryabinin <aryabinin(a)virtuozzo.com> :::::: CC: Ingo Molnar <mingo(a)kernel.org> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3493/3493] drivers/ata/ahci_zhaoxin_sgpio.c:31:5: warning: no previous prototype for 'ahci_wait_em_reset'
by kernel test robot 09 Dec '25

09 Dec '25

Hi leoliu-oc, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 36141432a37f7dedddde8825e724b07ce3a440fb commit: fb43492008c11fe89e510dd63383a2d37ea3cf8e [3493/3493] ata: ahci: Add support for AHCI SGPIO Enclosure Management config: x86_64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20251208/202512081930.DAECHxia-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251208/202512081930.DAECHxia-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/202512081930.DAECHxia-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/ata/ahci_zhaoxin_sgpio.c:31:5: warning: no previous prototype for 'ahci_wait_em_reset' [-Wmissing-prototypes] 31 | int ahci_wait_em_reset(struct sgpio_zhaoxin *sgpio_zhaoxin, u32 retry) | ^~~~~~~~~~~~~~~~~~ >> drivers/ata/ahci_zhaoxin_sgpio.c:55:6: warning: no previous prototype for 'ahci_zhaoxin_set_em_sgpio' [-Wmissing-prototypes] 55 | void ahci_zhaoxin_set_em_sgpio(struct sgpio_zhaoxin *sgpio_zhaoxin) | ^~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/ata/ahci_zhaoxin_sgpio.c:99:6: warning: no previous prototype for 'ahci_zhaoxin_set_em_sgpio_gpmode' [-Wmissing-prototypes] 99 | void ahci_zhaoxin_set_em_sgpio_gpmode(struct sgpio_zhaoxin *sgpio_zhaoxin) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/ata/ahci_zhaoxin_sgpio.c:601:6: warning: no previous prototype for 'set_em_messages' [-Wmissing-prototypes] 601 | void set_em_messages(struct sgpio_zhaoxin *sgpio_zhaoxin) | ^~~~~~~~~~~~~~~ >> drivers/ata/ahci_zhaoxin_sgpio.c:621:5: warning: no previous prototype for 'add_sgpio_zhaoxin' [-Wmissing-prototypes] 621 | int add_sgpio_zhaoxin(void) | ^~~~~~~~~~~~~~~~~ >> drivers/ata/ahci_zhaoxin_sgpio.c:673:6: warning: no previous prototype for 'remove_sgpio_zhaoxin' [-Wmissing-prototypes] 673 | void remove_sgpio_zhaoxin(void) | ^~~~~~~~~~~~~~~~~~~~ vim +/ahci_wait_em_reset +31 drivers/ata/ahci_zhaoxin_sgpio.c 25 26 static unsigned int zhaoxin_em_type __read_mostly = AHCI_EM_MSG_LED_MODE; /*LED protocol*/ 27 module_param(zhaoxin_em_type, int, 0644); 28 MODULE_PARM_DESC(zhaoxin_em_type, 29 "AHCI Enclosure Management Message type control (1 = led on, 2 = sgpio on,3 = sgpio gp on)"); 30 > 31 int ahci_wait_em_reset(struct sgpio_zhaoxin *sgpio_zhaoxin, u32 retry) 32 { 33 void __iomem *mmio = sgpio_zhaoxin->mmio; 34 u32 em_ctl; 35 36 if (!sgpio_zhaoxin || retry == 0) { 37 pr_err("In ahci wait em reset, invalid param\n"); 38 return -EINVAL; 39 } 40 41 while (retry--) { /*EM_CTL needs reset at least 64ms*/ 42 em_ctl = readl(mmio + HOST_EM_CTL); 43 if (em_ctl & EM_CTL_RST) 44 usleep_range(10000, 20000); /*EM_CTL still in reset, usleep 10ms*/ 45 else 46 break; 47 48 if (!retry) 49 pr_err("Wait for EM_CTL reset, time out\n"); 50 } 51 52 return 0; 53 } 54 > 55 void ahci_zhaoxin_set_em_sgpio(struct sgpio_zhaoxin *sgpio_zhaoxin) 56 { 57 void __iomem *mmio = sgpio_zhaoxin->mmio; 58 void __iomem *em_mmio = mmio + SGPIO_OFFSET; 59 60 u32 read; 61 62 sgpio_zhaoxin->sgpio_reg.cfg_0.enable = 1; 63 64 sgpio_zhaoxin->sgpio_reg.cfg_1.blink_gen_a = 0x7; 65 sgpio_zhaoxin->sgpio_reg.cfg_1.blink_gen_b = 0x3; 66 sgpio_zhaoxin->sgpio_reg.cfg_1.blink_gen_c = 0x0; 67 sgpio_zhaoxin->sgpio_reg.cfg_1.stretch_act_on = 0; 68 sgpio_zhaoxin->sgpio_reg.cfg_1.stretch_act_off = 0; 69 sgpio_zhaoxin->sgpio_reg.cfg_1.max_act_on = 2; 70 sgpio_zhaoxin->sgpio_reg.cfg_1.force_act_off = 1; 71 72 sgpio_zhaoxin->sgpio_reg.gp_transmit_cfg.sload = 0xf; 73 sgpio_zhaoxin->sgpio_reg.gp_transmit_cfg.count = 0x0; 74 75 sgpio_zhaoxin->sgpio_reg.transmit_0.sgpio_tx_0 = 0; 76 sgpio_zhaoxin->sgpio_reg.transmit_1.sgpio_tx_1 = 0; 77 sgpio_zhaoxin->sgpio_reg.gp_transmit_reg.sgpio_tx_gp = 0; 78 79 sgpio_zhaoxin->sgpio_reg.receive_reg.sgpio_rx = 0x07070707; 80 sgpio_zhaoxin->sgpio_reg.gp_receive_reg.sgpio_rx_gp = 0; 81 82 /*Setup SGPIO type*/ 83 read = readl(mmio + sgpio_zhaoxin->em_loc); 84 read = read | SGPIO_MESSAGE_HEAD; /*LED register MSG_HEAD, select SGPIO*/ 85 writel(read, mmio + sgpio_zhaoxin->em_loc); 86 87 /*Setup gp mode*/ 88 writel(sgpio_zhaoxin->sgpio_reg.gp_transmit_cfg.sgpio_tx_gp_cfg, em_mmio + 0x38); 89 90 /*Initial SGPIO CFG1*/ 91 writel(sgpio_zhaoxin->sgpio_reg.cfg_1.sgpio_cfg_1, em_mmio + 0x4); 92 93 /*Initial SGPIO CFG0*/ 94 read = readl(em_mmio); 95 read |= sgpio_zhaoxin->sgpio_reg.cfg_0.sgpio_cfg_0; 96 writel(read, em_mmio); 97 } 98 > 99 void ahci_zhaoxin_set_em_sgpio_gpmode(struct sgpio_zhaoxin *sgpio_zhaoxin) 100 { 101 void __iomem *mmio = sgpio_zhaoxin->mmio; 102 void __iomem *em_mmio = mmio + SGPIO_OFFSET; 103 u32 read; 104 105 sgpio_zhaoxin->sgpio_reg.cfg_0.enable = 1; 106 107 sgpio_zhaoxin->sgpio_reg.gp_transmit_cfg.sload = 0xf; 108 sgpio_zhaoxin->sgpio_reg.gp_transmit_cfg.count = 0xff; 109 110 sgpio_zhaoxin->sgpio_reg.transmit_0.sgpio_tx_0 = 0; 111 sgpio_zhaoxin->sgpio_reg.transmit_1.sgpio_tx_1 = 0; 112 sgpio_zhaoxin->sgpio_reg.gp_transmit_reg.sgpio_tx_gp = 0; 113 114 sgpio_zhaoxin->sgpio_reg.receive_reg.sgpio_rx = 0; 115 sgpio_zhaoxin->sgpio_reg.gp_receive_reg.sgpio_rx_gp = 0xff0f0000; 116 117 /*Setup SGPIO type*/ 118 read = readl(mmio + sgpio_zhaoxin->em_loc); 119 read |= SGPIO_MESSAGE_HEAD; 120 writel(read, mmio + sgpio_zhaoxin->em_loc); 121 122 /*Setup gp mode*/ 123 writel(sgpio_zhaoxin->sgpio_reg.gp_transmit_cfg.sgpio_tx_gp_cfg, em_mmio + 0x38); 124 125 /*Enable SGPIO*/ 126 writel(sgpio_zhaoxin->sgpio_reg.cfg_0.sgpio_cfg_0, em_mmio); 127 } 128 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3485/3485] drivers/net/ethernet/huawei/bma/kbox_drv/kbox_printk.c:281:57: warning: diagnostic behavior may be improved by adding the 'format(printf, 1, 2)' attribute to the declaration of 'kbox_dump_printk_info'
by kernel test robot 09 Dec '25

09 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 36141432a37f7dedddde8825e724b07ce3a440fb commit: cd2978286f40089fcd83f74ffdff733bfbe1e52a [3485/3485] Huawei BMA: Adding Huawei BMA driver: host_kbox_drv config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20251209/202512090240.NdebMvOZ-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 000e46219ba1ee53fc42d35e00c314c2807e8b14) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251209/202512090240.NdebMvOZ-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/202512090240.NdebMvOZ-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/net/ethernet/huawei/bma/kbox_drv/kbox_printk.c:20: In file included from drivers/net/ethernet/huawei/bma/kbox_drv/kbox_include.h:21: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:43: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:8: In file included from include/linux/cacheflush.h:5: In file included from arch/loongarch/include/asm/cacheflush.h:8: In file included from include/linux/mm.h:2204: include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 509 | item]; | ~~~~ include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 516 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ 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_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 528 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 537 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/huawei/bma/kbox_drv/kbox_printk.c:281:57: warning: diagnostic behavior may be improved by adding the 'format(printf, 1, 2)' attribute to the declaration of 'kbox_dump_printk_info' [-Wmissing-format-attribute] 281 | num = vsnprintf(tmp_buf, sizeof(tmp_buf) - 1, fmt, args); | ^ drivers/net/ethernet/huawei/bma/kbox_drv/kbox_printk.h:30:6: note: 'kbox_dump_printk_info' declared here 30 | int kbox_dump_printk_info(const char *fmt, ...); | ^ 6 warnings generated. -- In file included from drivers/net/ethernet/huawei/bma/kbox_drv/kbox_panic.c:20: In file included from drivers/net/ethernet/huawei/bma/kbox_drv/kbox_include.h:21: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:43: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:8: In file included from include/linux/cacheflush.h:5: In file included from arch/loongarch/include/asm/cacheflush.h:8: In file included from include/linux/mm.h:2204: include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 509 | item]; | ~~~~ include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 516 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ 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_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 528 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 537 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ >> drivers/net/ethernet/huawei/bma/kbox_drv/kbox_panic.c:85:57: warning: diagnostic behavior may be improved by adding the 'format(printf, 1, 2)' attribute to the declaration of 'kbox_dump_painc_info' [-Wmissing-format-attribute] 85 | num = vsnprintf(tmp_buf, sizeof(tmp_buf) - 1, fmt, args); | ^ drivers/net/ethernet/huawei/bma/kbox_drv/kbox_panic.h:21:5: note: 'kbox_dump_painc_info' declared here 21 | int kbox_dump_painc_info(const char *fmt, ...); | ^ 6 warnings generated. vim +281 drivers/net/ethernet/huawei/bma/kbox_drv/kbox_printk.c 270 271 int kbox_dump_printk_info(const char *fmt, ...) 272 { 273 va_list args; 274 int num = 0; 275 char tmp_buf[TMP_BUF_SIZE] = { }; 276 277 if (g_printk_init_ok != KBOX_TRUE) 278 return 0; 279 280 va_start(args, fmt); > 281 num = vsnprintf(tmp_buf, sizeof(tmp_buf) - 1, fmt, args); 282 if (num >= 0) 283 (void)kbox_duplicate_printk_info(tmp_buf, num); 284 285 va_end(args); 286 287 return num; 288 } 289 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3485/3485] lib/../mm/internal.h:1522:55: warning: diagnostic behavior may be improved by adding the 'format(printf, 2, 0)' attribute to the declaration of 'shrinker_debugfs_name_alloc'
by kernel test robot 09 Dec '25

09 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 36141432a37f7dedddde8825e724b07ce3a440fb commit: 5d638f251ef64f68766caaeaf41fbe159807b392 [3485/3485] mm: shrinker: add infrastructure for dynamically allocating shrinker config: arm64-randconfig-004-20251208 (https://download.01.org/0day-ci/archive/20251209/202512090019.r12ZqVrM-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 000e46219ba1ee53fc42d35e00c314c2807e8b14) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251209/202512090019.r12ZqVrM-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/202512090019.r12ZqVrM-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from lib/vsprintf.c:50: >> lib/../mm/internal.h:1522:55: warning: diagnostic behavior may be improved by adding the 'format(printf, 2, 0)' attribute to the declaration of 'shrinker_debugfs_name_alloc' [-Wmissing-format-attribute] 1519 | static inline int shrinker_debugfs_name_alloc(struct shrinker *shrinker, | __attribute__((format(printf, 2, 0))) 1520 | const char *fmt, va_list ap) 1521 | { 1522 | shrinker->name = kvasprintf_const(GFP_KERNEL, fmt, ap); | ^ lib/../mm/internal.h:1519:19: note: 'shrinker_debugfs_name_alloc' declared here 1519 | static inline int shrinker_debugfs_name_alloc(struct shrinker *shrinker, | ^ 1 warning generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for ARCH_SUPPORTS_SCHED_SOFT_QUOTA Depends on [n]: CGROUPS [=n] Selected by [y]: - ARM64 [=y] vim +1522 lib/../mm/internal.h 1513 1514 /* shrinker related functions */ 1515 unsigned long shrink_slab(gfp_t gfp_mask, int nid, struct mem_cgroup *memcg, 1516 int priority); 1517 1518 #ifdef CONFIG_SHRINKER_DEBUG 1519 static inline int shrinker_debugfs_name_alloc(struct shrinker *shrinker, 1520 const char *fmt, va_list ap) 1521 { > 1522 shrinker->name = kvasprintf_const(GFP_KERNEL, fmt, ap); 1523 1524 return shrinker->name ? 0 : -ENOMEM; 1525 } 1526 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3493/3493] mm/gmem.c:383:13: warning: unused variable 'nid'
by kernel test robot 09 Dec '25

09 Dec '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 36141432a37f7dedddde8825e724b07ce3a440fb commit: 18b5064b5892580f89d7eca015f884ce10190bac [3493/3493] gmem: hmemcpy should use dma for phy addr config: x86_64-randconfig-161-20251208 (https://download.01.org/0day-ci/archive/20251209/202512090002.kbElJ2I7-lkp@…) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251209/202512090002.kbElJ2I7-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/202512090002.kbElJ2I7-lkp@intel.com/ All warnings (new ones prefixed by >>): mm/gmem.c: In function 'gm_as_attach': >> mm/gmem.c:383:13: warning: unused variable 'nid' [-Wunused-variable] 383 | int nid; | ^~~ vim +/nid +383 mm/gmem.c 380709c322aaa3 Cunshu Ni 2025-11-01 378 380709c322aaa3 Cunshu Ni 2025-11-01 379 int gm_as_attach(struct gm_as *as, struct gm_dev *dev, 380709c322aaa3 Cunshu Ni 2025-11-01 380 bool activate, struct gm_context **out_ctx) 380709c322aaa3 Cunshu Ni 2025-11-01 381 { 380709c322aaa3 Cunshu Ni 2025-11-01 382 struct gm_context *ctx; 380709c322aaa3 Cunshu Ni 2025-11-01 @383 int nid; 380709c322aaa3 Cunshu Ni 2025-11-01 384 380709c322aaa3 Cunshu Ni 2025-11-01 385 ctx = kmem_cache_alloc(gm_ctx_cache, GFP_KERNEL); 380709c322aaa3 Cunshu Ni 2025-11-01 386 if (!ctx) 380709c322aaa3 Cunshu Ni 2025-11-01 387 return -ENOMEM; 380709c322aaa3 Cunshu Ni 2025-11-01 388 380709c322aaa3 Cunshu Ni 2025-11-01 389 ctx->as = as; 380709c322aaa3 Cunshu Ni 2025-11-01 390 ctx->dev = dev; 380709c322aaa3 Cunshu Ni 2025-11-01 391 380709c322aaa3 Cunshu Ni 2025-11-01 392 INIT_LIST_HEAD(&ctx->gm_dev_link); 380709c322aaa3 Cunshu Ni 2025-11-01 393 INIT_LIST_HEAD(&ctx->gm_as_link); 380709c322aaa3 Cunshu Ni 2025-11-01 394 380709c322aaa3 Cunshu Ni 2025-11-01 395 if (!list_empty(&as->gm_ctx_list)) { 380709c322aaa3 Cunshu Ni 2025-11-01 396 struct list_head *old_node; 380709c322aaa3 Cunshu Ni 2025-11-01 397 struct gm_context *old_ctx; 380709c322aaa3 Cunshu Ni 2025-11-01 398 380709c322aaa3 Cunshu Ni 2025-11-01 399 old_node = as->gm_ctx_list.prev; 380709c322aaa3 Cunshu Ni 2025-11-01 400 list_del_init(old_node); 380709c322aaa3 Cunshu Ni 2025-11-01 401 old_ctx = list_entry(old_node, struct gm_context, gm_as_link); 380709c322aaa3 Cunshu Ni 2025-11-01 402 kfree(old_ctx); 380709c322aaa3 Cunshu Ni 2025-11-01 403 } 380709c322aaa3 Cunshu Ni 2025-11-01 404 380709c322aaa3 Cunshu Ni 2025-11-01 405 list_add_tail(&dev->gm_ctx_list, &ctx->gm_dev_link); 380709c322aaa3 Cunshu Ni 2025-11-01 406 list_add_tail(&ctx->gm_as_link, &as->gm_ctx_list); 380709c322aaa3 Cunshu Ni 2025-11-01 407 380709c322aaa3 Cunshu Ni 2025-11-01 408 if (activate) { 380709c322aaa3 Cunshu Ni 2025-11-01 409 /* 380709c322aaa3 Cunshu Ni 2025-11-01 410 * Here we should really have a callback function to perform the context switch 380709c322aaa3 Cunshu Ni 2025-11-01 411 * for the hardware. E.g. in x86 this function is effectively 380709c322aaa3 Cunshu Ni 2025-11-01 412 * flushing the CR3 value. Currently we do not care time-sliced context switch, 380709c322aaa3 Cunshu Ni 2025-11-01 413 * unless someone wants to support it. 380709c322aaa3 Cunshu Ni 2025-11-01 414 */ 380709c322aaa3 Cunshu Ni 2025-11-01 415 dev->current_ctx = ctx; 380709c322aaa3 Cunshu Ni 2025-11-01 416 } 380709c322aaa3 Cunshu Ni 2025-11-01 417 *out_ctx = ctx; 380709c322aaa3 Cunshu Ni 2025-11-01 418 380709c322aaa3 Cunshu Ni 2025-11-01 419 /* 380709c322aaa3 Cunshu Ni 2025-11-01 420 * gm_as_attach will be used to attach device to process address space. 380709c322aaa3 Cunshu Ni 2025-11-01 421 * Handle this case and add hnodes registered by device to process mems_allowed. 380709c322aaa3 Cunshu Ni 2025-11-01 422 */ 18b5064b589258 Ni Cunshu 2025-12-08 423 #ifdef CONFIG_CPUSETS 380709c322aaa3 Cunshu Ni 2025-11-01 424 for_each_node_mask(nid, dev->registered_hnodes) 380709c322aaa3 Cunshu Ni 2025-11-01 425 node_set(nid, current->mems_allowed); 18b5064b589258 Ni Cunshu 2025-12-08 426 #endif 380709c322aaa3 Cunshu Ni 2025-11-01 427 return 0; 380709c322aaa3 Cunshu Ni 2025-11-01 428 } 380709c322aaa3 Cunshu Ni 2025-11-01 429 EXPORT_SYMBOL_GPL(gm_as_attach); 2ce9e864fa288b Cunshu Ni 2025-11-02 430 :::::: The code at line 383 was first introduced by commit :::::: 380709c322aaa306b5ac3c278a0700043f7d33e2 gmem: prepare config, boot parameter, vma flag and basic GMEM related structs :::::: TO: Cunshu Ni <nicunshu(a)huawei.com> :::::: CC: zhangjian <zhangjian496(a)huawei.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 3386/3386] include/linux/string.h:290:33: warning: '__builtin_strncpy' specified bound depends on the length of the source argument
by kernel test robot 08 Dec '25

08 Dec '25

Hi Weili, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 69d9543977fd7abe8b555406c7a3e5d64d8292f8 commit: a1666f44c2250f7413e73e2f4c02cb2c01f9e3b0 [3386/3386] crypto: hisilicon/qm - support no-sva feature config: arm64-randconfig-r054-20251208 (https://download.01.org/0day-ci/archive/20251208/202512082302.Kf4xjvAw-lkp@…) compiler: aarch64-linux-gcc (GCC) 13.4.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251208/202512082302.Kf4xjvAw-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/202512082302.Kf4xjvAw-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from include/linux/bitmap.h:9, from include/linux/cpumask.h:12, from include/linux/smp.h:13, from include/linux/lockdep.h:14, from include/linux/mutex.h:17, from include/linux/kernfs.h:13, from include/linux/sysfs.h:17, from include/linux/kobject.h:21, from include/linux/of.h:17, from include/linux/irqdomain.h:35, from include/linux/acpi.h:13, from drivers/crypto/hisilicon/qm.c:4: In function 'strncpy', inlined from 'qm_alloc_uacce' at drivers/crypto/hisilicon/qm.c:2755:2: >> include/linux/string.h:290:33: warning: '__builtin_strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation] 290 | #define __underlying_strncpy __builtin_strncpy | ^ include/linux/string.h:300:16: note: in expansion of macro '__underlying_strncpy' 300 | return __underlying_strncpy(p, q, size); | ^~~~~~~~~~~~~~~~~~~~ In function 'strlen', inlined from 'qm_alloc_uacce' at drivers/crypto/hisilicon/qm.c:2748:13: include/linux/string.h:288:33: note: length computed here 288 | #define __underlying_strlen __builtin_strlen | ^ include/linux/string.h:321:24: note: in expansion of macro '__underlying_strlen' 321 | return __underlying_strlen(p); | ^~~~~~~~~~~~~~~~~~~ vim +/__builtin_strncpy +290 include/linux/string.h 47227d27e2fcb0 Daniel Axtens 2020-06-03 268 47227d27e2fcb0 Daniel Axtens 2020-06-03 269 #ifdef CONFIG_KASAN 47227d27e2fcb0 Daniel Axtens 2020-06-03 270 extern void *__underlying_memchr(const void *p, int c, __kernel_size_t size) __RENAME(memchr); 47227d27e2fcb0 Daniel Axtens 2020-06-03 271 extern int __underlying_memcmp(const void *p, const void *q, __kernel_size_t size) __RENAME(memcmp); 47227d27e2fcb0 Daniel Axtens 2020-06-03 272 extern void *__underlying_memcpy(void *p, const void *q, __kernel_size_t size) __RENAME(memcpy); 47227d27e2fcb0 Daniel Axtens 2020-06-03 273 extern void *__underlying_memmove(void *p, const void *q, __kernel_size_t size) __RENAME(memmove); 47227d27e2fcb0 Daniel Axtens 2020-06-03 274 extern void *__underlying_memset(void *p, int c, __kernel_size_t size) __RENAME(memset); 47227d27e2fcb0 Daniel Axtens 2020-06-03 275 extern char *__underlying_strcat(char *p, const char *q) __RENAME(strcat); 47227d27e2fcb0 Daniel Axtens 2020-06-03 276 extern char *__underlying_strcpy(char *p, const char *q) __RENAME(strcpy); 47227d27e2fcb0 Daniel Axtens 2020-06-03 277 extern __kernel_size_t __underlying_strlen(const char *p) __RENAME(strlen); 47227d27e2fcb0 Daniel Axtens 2020-06-03 278 extern char *__underlying_strncat(char *p, const char *q, __kernel_size_t count) __RENAME(strncat); 47227d27e2fcb0 Daniel Axtens 2020-06-03 279 extern char *__underlying_strncpy(char *p, const char *q, __kernel_size_t size) __RENAME(strncpy); 47227d27e2fcb0 Daniel Axtens 2020-06-03 280 #else 47227d27e2fcb0 Daniel Axtens 2020-06-03 281 #define __underlying_memchr __builtin_memchr 47227d27e2fcb0 Daniel Axtens 2020-06-03 282 #define __underlying_memcmp __builtin_memcmp 47227d27e2fcb0 Daniel Axtens 2020-06-03 283 #define __underlying_memcpy __builtin_memcpy 47227d27e2fcb0 Daniel Axtens 2020-06-03 284 #define __underlying_memmove __builtin_memmove 47227d27e2fcb0 Daniel Axtens 2020-06-03 285 #define __underlying_memset __builtin_memset 47227d27e2fcb0 Daniel Axtens 2020-06-03 286 #define __underlying_strcat __builtin_strcat 47227d27e2fcb0 Daniel Axtens 2020-06-03 287 #define __underlying_strcpy __builtin_strcpy 47227d27e2fcb0 Daniel Axtens 2020-06-03 288 #define __underlying_strlen __builtin_strlen 47227d27e2fcb0 Daniel Axtens 2020-06-03 289 #define __underlying_strncat __builtin_strncat 47227d27e2fcb0 Daniel Axtens 2020-06-03 @290 #define __underlying_strncpy __builtin_strncpy 47227d27e2fcb0 Daniel Axtens 2020-06-03 291 #endif 47227d27e2fcb0 Daniel Axtens 2020-06-03 292 :::::: The code at line 290 was first introduced by commit :::::: 47227d27e2fcb01a9e8f5958d8997cf47a820afc string.h: fix incompatibility between FORTIFY_SOURCE and KASAN :::::: TO: Daniel Axtens <dja(a)axtens.net> :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6 0/8] xsched: XCU Partition
by Zicheng Qu 08 Dec '25

08 Dec '25

Zicheng Qu (8): xsched: refactor CFS per-XCU rq init/deinit paths xsched: fix NULL pointer risk on attach entry allocation xsched: fix concurrent modification NULL pointer dereference in xcu.sched_class xsched: fix hung_task caused by cgroup_file_show and xcg_mutex deadlock xsched: prevent NULL deref by refcounting css and tracking offline state xsched: fix divide-by-zero caused by u64 overflow in CFS shares weight calculation xsched: DEBUG log cleanup xsched: prevent race between enqueue_ctx and xsched_task_free include/linux/xsched.h | 27 ++++- kernel/xsched/cfs.c | 31 +++++- kernel/xsched/cfs_quota.c | 7 ++ kernel/xsched/cgroup.c | 219 +++++++++++++++++++++----------------- kernel/xsched/core.c | 9 +- kernel/xsched/rt.c | 18 +--- kernel/xsched/vstream.c | 3 + 7 files changed, 185 insertions(+), 129 deletions(-) -- 2.34.1

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[PATCH OLK-6.6 0/1] Fix UAF issue for mfs
by Hongbo Li 08 Dec '25

08 Dec '25

Fix one UAF issue for mfs. Hongbo Li (1): mfs: Fix UAF problem on event object when enable tracepoint fs/mfs/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.34.1

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[PATCH OLK-6.6] zcopy: Fix NULL pointer dereference while attach conflict with free
by Liu Mingrui 08 Dec '25

08 Dec '25

hulk inclusion category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IDBKGM -------------------------------- Add mm_read_lock to avoid conflict between attach and free. Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=000020300acd7000 [0000000000000000] pgd=0800203008421403, p4d=0800203008421403, pud=0800203008422403, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] SMP CPU: 107 PID: 151805 Comm: ioctl_zcopy_too Kdump: loaded Not tainted 6.6.0-f3180605d2a8 #1 Hardware name: Huawei Taishan 2280 V2/BC82AMDD, BIOS 6.57 05/17/2023 pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : attach_pte_range+0x190/0x9a0 [zcopy] lr : attach_pte_range+0xd4/0x9a0 [zcopy] sp : ffff8000be8abb20 x29: ffff8000be8abb80 x28: 0000ffff90e00000 x27: ffffa651cb444d08 x26: 0400000000000001 x25: 0000000000000000 x24: ffff203017961000 x23: 0000ffff87400000 x22: 0010000000000001 x21: fffffc80c05e5840 x20: ffff2020259111d0 x19: ffffa651cb443c40 x18: ffff8000be8ab9b0 x17: 0000000000000000 x16: ffffa651e40182b0 x15: ffffffffffffffbc x14: ffffa651e8b17c58 x13: ffff20301695a000 x12: ffffa651cb444a58 x11: 0000000000000154 x10: 0000ffff91000000 x9 : ffffa651cb43e574 x8 : 0000000000000000 x7 : ffff20300758a880 x6 : 0000000000200000 x5 : ffff203008b1b438 x4 : 0000000000000001 x3 : 00000000000001da x2 : fffffc0000000000 x1 : 0000000000000000 x0 : 00000000000001da Call trace: attach_pte_range+0x190/0x9a0 [zcopy] attach_page_range+0x22c/0x618 [zcopy] attach_pages+0x2b8/0x8b8 [zcopy] zcopy_ioctl+0xe8/0x168 [zcopy] vfs_ioctl+0x3c/0xa8 __se_sys_ioctl+0x12c/0x160 __arm64_sys_ioctl+0x40/0x68 invoke_syscall+0x8c/0x1d0 el0_svc_common.constprop.0+0x64/0x1d0 do_el0_svc+0x54/0xe0 el0_slow_syscall+0x44/0x1e8 el0t_64_sync_handler+0xc0/0xc8 el0t_64_sync+0x188/0x190 Fixes: 8d543a8e74d5 ("zcopy: Introduce the pageattach interface") Signed-off-by: Liu Mingrui <liumingrui(a)huawei.com> --- drivers/misc/zcopy/zcopy.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/misc/zcopy/zcopy.c b/drivers/misc/zcopy/zcopy.c index f4c56ce07e66..48c0702b96e5 100644 --- a/drivers/misc/zcopy/zcopy.c +++ b/drivers/misc/zcopy/zcopy.c @@ -709,7 +709,9 @@ static int attach_pages(unsigned long dst_addr, unsigned long src_addr, } trace_attach_page_range_start(dst_mm, src_mm, dst_addr, src_addr, size); + mmap_read_lock(src_mm); ret = attach_page_range(dst_mm, src_mm, dst_addr, src_addr, size); + mmap_read_unlock(src_mm); trace_attach_page_range_end(dst_mm, src_mm, dst_addr, src_addr, ret); unpin_user_pages_dirty_lock(process_pages, pinned_pages, 0); -- 2.25.1

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[PATCH OLK-5.10 0/1] Fix invalid paging request while attach transhugepage to same addr
by Liu Mingrui 08 Dec '25

08 Dec '25

zcopy: Fix invalid paging request while attach transhugepage to same addr Liu Mingrui (1): zcopy: Fix invalid paging request while attach transhugepage to same addr drivers/misc/zcopy/zcopy.c | 96 ++++++++++++++------------------------ 1 file changed, 34 insertions(+), 62 deletions(-) -- 2.25.1

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