July 2025 - Kernel - mailweb.openeuler.org

[openeuler:OLK-5.10 2882/2882] kernel/cgroup/cgroup.c:6734: warning: Function parameter or member 'fd' not described in 'cgroup_get_from_fd_v2'
by kernel test robot 02 Jul '25

02 Jul '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: e4755f6a2b98f251edcf63f98f416b5d76425f8c commit: 56fee14453059f894b018d08071826d47e634800 [2882/2882] cgroup: make cgroup_bpf_prog_attach work when cgroup2 is not mounted config: x86_64-randconfig-2002-20250501 (https://download.01.org/0day-ci/archive/20250702/202507021750.a3TifDd5-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021750.a3TifDd5-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/202507021750.a3TifDd5-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/cgroup/cgroup.c:6217: warning: Function parameter or member 'f' not described in 'cgroup_get_from_file' kernel/cgroup/cgroup.c:6369: warning: Function parameter or member 'kargs' not described in 'cgroup_can_fork' kernel/cgroup/cgroup.c:6430: warning: Function parameter or member 'kargs' not described in 'cgroup_post_fork' kernel/cgroup/cgroup.c:6716: warning: Function parameter or member 'fd' not described in 'cgroup_get_from_fd' >> kernel/cgroup/cgroup.c:6734: warning: Function parameter or member 'fd' not described in 'cgroup_get_from_fd_v2' vim +6734 kernel/cgroup/cgroup.c 6729 6730 /** 6731 * same with cgroup_get_from_fd, only add cgrp_dfl_visible check 6732 */ 6733 struct cgroup *cgroup_get_from_fd_v2(int fd) > 6734 { 6735 struct cgroup *cgrp = cgroup_v1v2_get_from_fd(fd); 6736 6737 if (IS_ERR(cgrp)) 6738 return ERR_CAST(cgrp); 6739 6740 if (!cgroup_on_dfl(cgrp)) { 6741 cgroup_put(cgrp); 6742 if (cgrp_dfl_visible) 6743 return ERR_PTR(-EBADF); 6744 6745 cgrp = &cgrp_dfl_root.cgrp; 6746 cgroup_get(cgrp); 6747 } 6748 return cgrp; 6749 } 6750 EXPORT_SYMBOL_GPL(cgroup_get_from_fd_v2); 6751 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1605/1605] kernel/hung_task.c:148:7: error: use of undeclared identifier 'sysctl_hung_task_all_cpu_backtrace'
by kernel test robot 02 Jul '25

02 Jul '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: d96cd567c8d8d584405abe92c2576bf58202fa6e commit: 190aae97bcddbed131a203f829257b168f5058ce [1605/1605] kernel/hung_task.c: introduce sysctl to print all traces when a hung task is detected config: x86_64-buildonly-randconfig-2002-20250501 (https://download.01.org/0day-ci/archive/20250702/202507021631.OYJPyxwP-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021631.OYJPyxwP-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/202507021631.OYJPyxwP-lkp@intel.com/ All errors (new ones prefixed by >>): >> kernel/hung_task.c:148:7: error: use of undeclared identifier 'sysctl_hung_task_all_cpu_backtrace' 148 | if (sysctl_hung_task_all_cpu_backtrace) | ^ kernel/hung_task.c:235:5: warning: no previous prototype for function 'proc_dohung_task_timeout_secs' [-Wmissing-prototypes] 235 | int proc_dohung_task_timeout_secs(struct ctl_table *table, int write, | ^ kernel/hung_task.c:235:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 235 | int proc_dohung_task_timeout_secs(struct ctl_table *table, int write, | ^ | static 1 warning and 1 error generated. vim +/sysctl_hung_task_all_cpu_backtrace +148 kernel/hung_task.c 94 95 static void check_hung_task(struct task_struct *t, unsigned long timeout) 96 { 97 unsigned long switch_count = t->nvcsw + t->nivcsw; 98 99 /* 100 * Ensure the task is not frozen. 101 * Also, skip vfork and any other user process that freezer should skip. 102 */ 103 if (unlikely(t->flags & (PF_FROZEN | PF_FREEZER_SKIP))) 104 return; 105 106 /* 107 * When a freshly created task is scheduled once, changes its state to 108 * TASK_UNINTERRUPTIBLE without having ever been switched out once, it 109 * musn't be checked. 110 */ 111 if (unlikely(!switch_count)) 112 return; 113 114 if (switch_count != t->last_switch_count) { 115 t->last_switch_count = switch_count; 116 t->last_switch_time = jiffies; 117 return; 118 } 119 if (time_is_after_jiffies(t->last_switch_time + timeout * HZ)) 120 return; 121 122 trace_sched_process_hang(t); 123 124 if (sysctl_hung_task_panic) { 125 console_verbose(); 126 hung_task_show_lock = true; 127 hung_task_call_panic = true; 128 } 129 130 /* 131 * Ok, the task did not get scheduled for more than 2 minutes, 132 * complain: 133 */ 134 if (sysctl_hung_task_warnings) { 135 if (sysctl_hung_task_warnings > 0) 136 sysctl_hung_task_warnings--; 137 pr_err("INFO: task %s:%d blocked for more than %ld seconds.\n", 138 t->comm, t->pid, timeout); 139 pr_err(" %s %s %.*s\n", 140 print_tainted(), init_utsname()->release, 141 (int)strcspn(init_utsname()->version, " "), 142 init_utsname()->version); 143 pr_err("\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\"" 144 " disables this message.\n"); 145 sched_show_task(t); 146 hung_task_show_lock = true; 147 > 148 if (sysctl_hung_task_all_cpu_backtrace) 149 hung_task_show_all_bt = true; 150 } 151 152 touch_nmi_watchdog(); 153 } 154 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 2999/2999] drivers/cpufreq/intel_pstate.c:1473:6: warning: no previous prototype for 'notify_hwp_interrupt'
by kernel test robot 02 Jul '25

02 Jul '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: e4755f6a2b98f251edcf63f98f416b5d76425f8c commit: e217d5958ee378eb304fb0b4eb6fcb551e555842 [2999/2999] cpufreq: intel_pstate: Process HWP Guaranteed change notification config: x86_64-buildonly-randconfig-2002-20250702 (https://download.01.org/0day-ci/archive/20250702/202507021524.3Cm8FJyF-lkp@…) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021524.3Cm8FJyF-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/202507021524.3Cm8FJyF-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/cpufreq/intel_pstate.c:1473:6: warning: no previous prototype for 'notify_hwp_interrupt' [-Wmissing-prototypes] 1473 | void notify_hwp_interrupt(void) | ^~~~~~~~~~~~~~~~~~~~ drivers/cpufreq/intel_pstate.c:2195:32: warning: 'intel_pstate_cpu_oob_ids' defined but not used [-Wunused-const-variable=] 2195 | static const struct x86_cpu_id intel_pstate_cpu_oob_ids[] __initconst = { | ^~~~~~~~~~~~~~~~~~~~~~~~ vim +/notify_hwp_interrupt +1473 drivers/cpufreq/intel_pstate.c 1472 > 1473 void notify_hwp_interrupt(void) 1474 { 1475 unsigned int this_cpu = smp_processor_id(); 1476 struct cpudata *cpudata; 1477 unsigned long flags; 1478 u64 value; 1479 1480 if (!READ_ONCE(hwp_active) || !boot_cpu_has(X86_FEATURE_HWP_NOTIFY)) 1481 return; 1482 1483 rdmsrl_safe(MSR_HWP_STATUS, &value); 1484 if (!(value & 0x01)) 1485 return; 1486 1487 spin_lock_irqsave(&hwp_notify_lock, flags); 1488 1489 if (!cpumask_test_cpu(this_cpu, &hwp_intr_enable_mask)) 1490 goto ack_intr; 1491 1492 /* 1493 * Currently we never free all_cpu_data. And we can't reach here 1494 * without this allocated. But for safety for future changes, added 1495 * check. 1496 */ 1497 if (unlikely(!READ_ONCE(all_cpu_data))) 1498 goto ack_intr; 1499 1500 /* 1501 * The free is done during cleanup, when cpufreq registry is failed. 1502 * We wouldn't be here if it fails on init or switch status. But for 1503 * future changes, added check. 1504 */ 1505 cpudata = READ_ONCE(all_cpu_data[this_cpu]); 1506 if (unlikely(!cpudata)) 1507 goto ack_intr; 1508 1509 schedule_delayed_work(&cpudata->hwp_notify_work, msecs_to_jiffies(10)); 1510 1511 spin_unlock_irqrestore(&hwp_notify_lock, flags); 1512 1513 return; 1514 1515 ack_intr: 1516 wrmsrl_safe(MSR_HWP_STATUS, 0); 1517 spin_unlock_irqrestore(&hwp_notify_lock, flags); 1518 } 1519 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 2882/2882] kernel/cgroup/cgroup.c:6217: warning: Function parameter or member 'f' not described in 'cgroup_get_from_file'
by kernel test robot 02 Jul '25

02 Jul '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: e4755f6a2b98f251edcf63f98f416b5d76425f8c commit: 590ef7039097222551e104343ae4ba74e4ed2f87 [2882/2882] cgroup: add cgroup_v1v2_get_from_[fd/file]() config: x86_64-randconfig-2002-20250501 (https://download.01.org/0day-ci/archive/20250702/202507021519.N5QrYRTq-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021519.N5QrYRTq-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/202507021519.N5QrYRTq-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/cgroup/cgroup.c:6217: warning: Function parameter or member 'f' not described in 'cgroup_get_from_file' kernel/cgroup/cgroup.c:6369: warning: Function parameter or member 'kargs' not described in 'cgroup_can_fork' kernel/cgroup/cgroup.c:6430: warning: Function parameter or member 'kargs' not described in 'cgroup_post_fork' >> kernel/cgroup/cgroup.c:6716: warning: Function parameter or member 'fd' not described in 'cgroup_get_from_fd' vim +6217 kernel/cgroup/cgroup.c 6211 6212 /** 6213 * cgroup_get_from_file - same as cgroup_v1v2_get_from_file, but only supports 6214 * cgroup2. 6215 */ 6216 static struct cgroup *cgroup_get_from_file(struct file *f) > 6217 { 6218 struct cgroup *cgrp = cgroup_v1v2_get_from_file(f); 6219 6220 if (IS_ERR(cgrp)) 6221 return ERR_CAST(cgrp); 6222 6223 if (!cgroup_on_dfl(cgrp)) { 6224 cgroup_put(cgrp); 6225 return ERR_PTR(-EBADF); 6226 } 6227 6228 return cgrp; 6229 } 6230 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1605/1605] block/bio-integrity.c:41:6: warning: no previous prototype for function '__bio_integrity_free'
by kernel test robot 02 Jul '25

02 Jul '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: d96cd567c8d8d584405abe92c2576bf58202fa6e commit: f9c4e7b09f7d51f9256fe51b9c40657cd7302530 [1605/1605] block: release bip in a right way in error path config: x86_64-buildonly-randconfig-2002-20250501 (https://download.01.org/0day-ci/archive/20250702/202507021458.HwvZj3Sk-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021458.HwvZj3Sk-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/202507021458.HwvZj3Sk-lkp@intel.com/ All warnings (new ones prefixed by >>): >> block/bio-integrity.c:41:6: warning: no previous prototype for function '__bio_integrity_free' [-Wmissing-prototypes] 41 | void __bio_integrity_free(struct bio_set *bs, struct bio_integrity_payload *bip) | ^ block/bio-integrity.c:41:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 41 | void __bio_integrity_free(struct bio_set *bs, struct bio_integrity_payload *bip) | ^ | static 1 warning generated. block/bio-integrity.o: warning: objtool: missing symbol for section .init.text vim +/__bio_integrity_free +41 block/bio-integrity.c 40 > 41 void __bio_integrity_free(struct bio_set *bs, struct bio_integrity_payload *bip) 42 { 43 if (bs && mempool_initialized(&bs->bio_integrity_pool)) { 44 if (bip->bip_vec) 45 bvec_free(&bs->bvec_integrity_pool, bip->bip_vec, 46 bip->bip_slab); 47 mempool_free(bip, &bs->bio_integrity_pool); 48 } else { 49 kfree(bip); 50 } 51 } 52 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1684/1684] drivers/acpi/acpi_adxl.o: warning: objtool: missing symbol for section .text
by kernel test robot 02 Jul '25

02 Jul '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: d96cd567c8d8d584405abe92c2576bf58202fa6e commit: a275b25c978318513b28931cec91c4a10120748b [1684/1684] EDAC, skx_edac: Add address translation for non-volatile DIMMs config: x86_64-buildonly-randconfig-003-20250702 (https://download.01.org/0day-ci/archive/20250702/202507022042.Q1D7bRjT-lkp@…) compiler: clang version 20.1.7 (https://github.com/llvm/llvm-project 6146a88f60492b520a36f8f8f3231e15f3cc6082) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507022042.Q1D7bRjT-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/202507022042.Q1D7bRjT-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/acpi/acpi_adxl.o: warning: objtool: missing symbol for section .text -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 2445/2445] drivers/gpu/drm/display/drm_display_helper.o: warning: objtool: drm_dp_set_subconnector_property+0xed: unreachable instruction
by kernel test robot 02 Jul '25

02 Jul '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: bf2df406d75690971b837e37418494e09d8eec02 commit: 107e8e2d48f2014216a818314d4e1af591b39aed [2445/2445] cpu: Re-enable CPU mitigations by default for !X86 architectures config: x86_64-buildonly-randconfig-2001-20250702 (https://download.01.org/0day-ci/archive/20250702/202507021408.Op6CzldG-lkp@…) compiler: clang version 20.1.7 (https://github.com/llvm/llvm-project 6146a88f60492b520a36f8f8f3231e15f3cc6082) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021408.Op6CzldG-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/202507021408.Op6CzldG-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/gpu/drm/display/drm_display_helper.o: warning: objtool: drm_dp_subconnector_type+0xa5: unreachable instruction >> drivers/gpu/drm/display/drm_display_helper.o: warning: objtool: drm_dp_set_subconnector_property+0xed: unreachable instruction -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 2445/2445] include/linux/psp-hygon.h:219:5: warning: no previous prototype for 'psp_register_cmd_notifier'
by kernel test robot 02 Jul '25

02 Jul '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: bf2df406d75690971b837e37418494e09d8eec02 commit: 518c81d56c055affc71650b1ad1ba7f86e5ee867 [2445/2445] arch/x86/kvm: Support tkm virtualization config: x86_64-buildonly-randconfig-2002-20250702 (https://download.01.org/0day-ci/archive/20250702/202507021332.zHwpOcwr-lkp@…) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021332.zHwpOcwr-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/202507021332.zHwpOcwr-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from arch/x86/kvm/psp.c:15: >> include/linux/psp-hygon.h:219:5: warning: no previous prototype for 'psp_register_cmd_notifier' [-Wmissing-prototypes] 219 | int psp_register_cmd_notifier(uint32_t cmd_id, p2c_notifier_t notifier) { return -ENODEV; } | ^~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/psp-hygon.h:220:5: warning: no previous prototype for 'psp_unregister_cmd_notifier' [-Wmissing-prototypes] 220 | int psp_unregister_cmd_notifier(uint32_t cmd_id, p2c_notifier_t notifier) { return -ENODEV; } | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/kvm/psp.c:105:21: warning: no previous prototype for 'map_tbl_dump' [-Wmissing-prototypes] 105 | void __maybe_unused map_tbl_dump(const char *title, struct addr_map_tbls *tbls) | ^~~~~~~~~~~~ arch/x86/kvm/psp.c:118:21: warning: no previous prototype for 'g2h_tbl_dump' [-Wmissing-prototypes] 118 | void __maybe_unused g2h_tbl_dump(const char *title, struct gpa2hva_tbls *tbls) | ^~~~~~~~~~~~ vim +/psp_register_cmd_notifier +219 include/linux/psp-hygon.h d0b3a770d8e20d chench00 2024-08-01 218 d0b3a770d8e20d chench00 2024-08-01 @219 int psp_register_cmd_notifier(uint32_t cmd_id, p2c_notifier_t notifier) { return -ENODEV; } d0b3a770d8e20d chench00 2024-08-01 @220 int psp_unregister_cmd_notifier(uint32_t cmd_id, p2c_notifier_t notifier) { return -ENODEV; } d0b3a770d8e20d chench00 2024-08-01 221 :::::: The code at line 219 was first introduced by commit :::::: d0b3a770d8e20d953fe2a74ea8c4b5f4767c4add crypto: command co-processor: Add another mailbox interrupt support for PSP sending command to X86 :::::: TO: chench00 <chench(a)hygon.cn> :::::: CC: chench00 <chench(a)hygon.cn> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:openEuler-1.0-LTS 1605/1605] net/sctp/chunk.c:198:25: warning: data argument not used by format string
by kernel test robot 02 Jul '25

02 Jul '25

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: d96cd567c8d8d584405abe92c2576bf58202fa6e commit: 05834253a093f4e6d9cc31f380de304b540a548e [1605/1605] sctp: frag_point sanity check config: x86_64-buildonly-randconfig-2002-20250501 (https://download.01.org/0day-ci/archive/20250702/202507021205.lTZLbTRm-lkp@…) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021205.lTZLbTRm-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/202507021205.lTZLbTRm-lkp@intel.com/ All warnings (new ones prefixed by >>): >> net/sctp/chunk.c:198:25: warning: data argument not used by format string [-Wformat-extra-args] 197 | pr_warn_ratelimited("%s: asoc:%p frag_point is zero, forcing max_data to default minimum (%Zu)", | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 198 | __func__, asoc, max_data); | ~~~~~~~~~~~~~~~~^~~~~~~~~ include/linux/printk.h:485:49: note: expanded from macro 'pr_warn_ratelimited' 485 | printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~ include/linux/printk.h:469:17: note: expanded from macro 'printk_ratelimited' 469 | printk(fmt, ##__VA_ARGS__); \ | ~~~ ^ 1 warning generated. vim +198 net/sctp/chunk.c 156 157 158 /* A data chunk can have a maximum payload of (2^16 - 20). Break 159 * down any such message into smaller chunks. Opportunistically, fragment 160 * the chunks down to the current MTU constraints. We may get refragmented 161 * later if the PMTU changes, but it is _much better_ to fragment immediately 162 * with a reasonable guess than always doing our fragmentation on the 163 * soft-interrupt. 164 */ 165 struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc, 166 struct sctp_sndrcvinfo *sinfo, 167 struct iov_iter *from) 168 { 169 size_t len, first_len, max_data, remaining; 170 size_t msg_len = iov_iter_count(from); 171 struct sctp_shared_key *shkey = NULL; 172 struct list_head *pos, *temp; 173 struct sctp_chunk *chunk; 174 struct sctp_datamsg *msg; 175 int err; 176 177 msg = sctp_datamsg_new(GFP_KERNEL); 178 if (!msg) 179 return ERR_PTR(-ENOMEM); 180 181 /* Note: Calculate this outside of the loop, so that all fragments 182 * have the same expiration. 183 */ 184 if (asoc->peer.prsctp_capable && sinfo->sinfo_timetolive && 185 (SCTP_PR_TTL_ENABLED(sinfo->sinfo_flags) || 186 !SCTP_PR_POLICY(sinfo->sinfo_flags))) 187 msg->expires_at = jiffies + 188 msecs_to_jiffies(sinfo->sinfo_timetolive); 189 190 /* This is the biggest possible DATA chunk that can fit into 191 * the packet 192 */ 193 max_data = asoc->frag_point; 194 if (unlikely(!max_data)) { 195 max_data = sctp_min_frag_point(sctp_sk(asoc->base.sk), 196 sctp_datachk_len(&asoc->stream)); 197 pr_warn_ratelimited("%s: asoc:%p frag_point is zero, forcing max_data to default minimum (%Zu)", > 198 __func__, asoc, max_data); 199 } 200 201 /* If the the peer requested that we authenticate DATA chunks 202 * we need to account for bundling of the AUTH chunks along with 203 * DATA. 204 */ 205 if (sctp_auth_send_cid(SCTP_CID_DATA, asoc)) { 206 struct sctp_hmac *hmac_desc = sctp_auth_asoc_get_hmac(asoc); 207 208 if (hmac_desc) 209 max_data -= SCTP_PAD4(sizeof(struct sctp_auth_chunk) + 210 hmac_desc->hmac_len); 211 212 if (sinfo->sinfo_tsn && 213 sinfo->sinfo_ssn != asoc->active_key_id) { 214 shkey = sctp_auth_get_shkey(asoc, sinfo->sinfo_ssn); 215 if (!shkey) { 216 err = -EINVAL; 217 goto errout; 218 } 219 } else { 220 shkey = asoc->shkey; 221 } 222 } 223 224 /* Set first_len and then account for possible bundles on first frag */ 225 first_len = max_data; 226 227 /* Check to see if we have a pending SACK and try to let it be bundled 228 * with this message. Do this if we don't have any data queued already. 229 * To check that, look at out_qlen and retransmit list. 230 * NOTE: we will not reduce to account for SACK, if the message would 231 * not have been fragmented. 232 */ 233 if (timer_pending(&asoc->timers[SCTP_EVENT_TIMEOUT_SACK]) && 234 asoc->outqueue.out_qlen == 0 && 235 list_empty(&asoc->outqueue.retransmit) && 236 msg_len > max_data) 237 first_len -= SCTP_PAD4(sizeof(struct sctp_sack_chunk)); 238 239 /* Encourage Cookie-ECHO bundling. */ 240 if (asoc->state < SCTP_STATE_COOKIE_ECHOED) 241 first_len -= SCTP_ARBITRARY_COOKIE_ECHO_LEN; 242 243 /* Account for a different sized first fragment */ 244 if (msg_len >= first_len) { 245 msg->can_delay = 0; 246 if (msg_len > first_len) 247 SCTP_INC_STATS(sock_net(asoc->base.sk), 248 SCTP_MIB_FRAGUSRMSGS); 249 } else { 250 /* Which may be the only one... */ 251 first_len = msg_len; 252 } 253 254 /* Create chunks for all DATA chunks. */ 255 for (remaining = msg_len; remaining; remaining -= len) { 256 u8 frag = SCTP_DATA_MIDDLE_FRAG; 257 258 if (remaining == msg_len) { 259 /* First frag, which may also be the last */ 260 frag |= SCTP_DATA_FIRST_FRAG; 261 len = first_len; 262 } else { 263 /* Middle frags */ 264 len = max_data; 265 } 266 267 if (len >= remaining) { 268 /* Last frag, which may also be the first */ 269 len = remaining; 270 frag |= SCTP_DATA_LAST_FRAG; 271 272 /* The application requests to set the I-bit of the 273 * last DATA chunk of a user message when providing 274 * the user message to the SCTP implementation. 275 */ 276 if ((sinfo->sinfo_flags & SCTP_EOF) || 277 (sinfo->sinfo_flags & SCTP_SACK_IMMEDIATELY)) 278 frag |= SCTP_DATA_SACK_IMM; 279 } 280 281 chunk = asoc->stream.si->make_datafrag(asoc, sinfo, len, frag, 282 GFP_KERNEL); 283 if (!chunk) { 284 err = -ENOMEM; 285 goto errout; 286 } 287 288 err = sctp_user_addto_chunk(chunk, len, from); 289 if (err < 0) 290 goto errout_chunk_free; 291 292 chunk->shkey = shkey; 293 294 /* Put the chunk->skb back into the form expected by send. */ 295 __skb_pull(chunk->skb, (__u8 *)chunk->chunk_hdr - 296 chunk->skb->data); 297 298 sctp_datamsg_assign(msg, chunk); 299 list_add_tail(&chunk->frag_list, &msg->chunks); 300 } 301 302 return msg; 303 304 errout_chunk_free: 305 sctp_chunk_free(chunk); 306 307 errout: 308 list_for_each_safe(pos, temp, &msg->chunks) { 309 list_del_init(pos); 310 chunk = list_entry(pos, struct sctp_chunk, frag_list); 311 sctp_chunk_free(chunk); 312 } 313 sctp_datamsg_put(msg); 314 315 return ERR_PTR(err); 316 } 317 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-5.10 2999/2999] drivers/crypto/ccp/hygon/hct.c:1343:15: warning: no previous prototype for 'hct_pin_memory'
by kernel test robot 02 Jul '25

02 Jul '25

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: e4755f6a2b98f251edcf63f98f416b5d76425f8c commit: b7a218b5c46200f323ac0fe07589e0bf0d648069 [2999/2999] crypto: hct: provides hygon crypto technology ccp device driver. config: x86_64-buildonly-randconfig-2004-20250702 (https://download.01.org/0day-ci/archive/20250702/202507021158.W1ajhxKz-lkp@…) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021158.W1ajhxKz-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/202507021158.W1ajhxKz-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/crypto/ccp/hygon/hct.c:1343:15: warning: no previous prototype for 'hct_pin_memory' [-Wmissing-prototypes] 1343 | struct page **hct_pin_memory(struct hct_private *private, unsigned long uaddr, | ^~~~~~~~~~~~~~ vim +/hct_pin_memory +1343 drivers/crypto/ccp/hygon/hct.c 1342 > 1343 struct page **hct_pin_memory(struct hct_private *private, unsigned long uaddr, 1344 unsigned long ulen, unsigned long *n) 1345 { 1346 unsigned long npages, size; 1347 int npinned; 1348 struct page **pages; 1349 unsigned long first, last; 1350 1351 if (ulen == 0 || uaddr + ulen < uaddr) 1352 return NULL; 1353 1354 first = (uaddr & PAGE_MASK) >> PAGE_SHIFT; 1355 last = ((uaddr + ulen - 1) & PAGE_MASK) >> PAGE_SHIFT; 1356 npages = (last - first + 1); 1357 1358 if (WARN_ON_ONCE(npages > INT_MAX)) 1359 return NULL; 1360 1361 size = npages * sizeof(struct page *); 1362 if (size > PAGE_SIZE) 1363 pages = vmalloc(size); 1364 else 1365 pages = kmalloc(size, GFP_KERNEL); 1366 1367 if (!pages) 1368 return NULL; 1369 1370 /* Pin the user virtual address. */ 1371 npinned = pin_user_pages_fast(uaddr, npages, FOLL_WRITE, pages); 1372 if (npinned != npages) 1373 goto err; 1374 1375 *n = npages; 1376 return pages; 1377 1378 err: 1379 if (npinned > 0) 1380 unpin_user_pages(pages, npinned); 1381 kvfree(pages); 1382 return NULL; 1383 } 1384 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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