tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: d37e1e4c52bc60578969f391fb81f947c3e83118 commit: d888f6b0a7666bcbcf3ba7e0b4e9c695a07e9209 [6950/7658] dm: treat alloc_dax() -EOPNOTSUPP failure as non-fatal config: powerpc-randconfig-r012-20220101 (https://download.01.org/0day-ci/archive/20240218/202402181312.qjWYpOJA-lkp@xxxxxxxxx/config) compiler: powerpc-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240218/202402181312.qjWYpOJA-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202402181312.qjWYpOJA-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): powerpc-linux-ld: drivers/md/dm.o: in function `alloc_dev': >> drivers/md/dm.c:2131:(.text.alloc_dev+0x6e4): undefined reference to `set_dax_nocache' >> powerpc-linux-ld: drivers/md/dm.c:2132:(.text.alloc_dev+0x6ec): undefined reference to `set_dax_nomc' pahole: .tmp_vmlinux.btf: Invalid argument .btf.vmlinux.bin.o: file not recognized: file format not recognized vim +2131 drivers/md/dm.c 2050 2051 /* 2052 * Allocate and initialise a blank device with a given minor. 2053 */ 2054 static struct mapped_device *alloc_dev(int minor) 2055 { 2056 int r, numa_node_id = dm_get_numa_node(); 2057 struct dax_device *dax_dev; 2058 struct mapped_device *md; 2059 void *old_md; 2060 2061 md = kvzalloc_node(sizeof(*md), GFP_KERNEL, numa_node_id); 2062 if (!md) { 2063 DMERR("unable to allocate device, out of memory."); 2064 return NULL; 2065 } 2066 2067 if (!try_module_get(THIS_MODULE)) 2068 goto bad_module_get; 2069 2070 /* get a minor number for the dev */ 2071 if (minor == DM_ANY_MINOR) 2072 r = next_free_minor(&minor); 2073 else 2074 r = specific_minor(minor); 2075 if (r < 0) 2076 goto bad_minor; 2077 2078 r = init_srcu_struct(&md->io_barrier); 2079 if (r < 0) 2080 goto bad_io_barrier; 2081 2082 md->numa_node_id = numa_node_id; 2083 md->init_tio_pdu = false; 2084 md->type = DM_TYPE_NONE; 2085 mutex_init(&md->suspend_lock); 2086 mutex_init(&md->type_lock); 2087 mutex_init(&md->table_devices_lock); 2088 spin_lock_init(&md->deferred_lock); 2089 atomic_set(&md->holders, 1); 2090 atomic_set(&md->open_count, 0); 2091 atomic_set(&md->event_nr, 0); 2092 atomic_set(&md->uevent_seq, 0); 2093 INIT_LIST_HEAD(&md->uevent_list); 2094 INIT_LIST_HEAD(&md->table_devices); 2095 spin_lock_init(&md->uevent_lock); 2096 2097 /* 2098 * default to bio-based until DM table is loaded and md->type 2099 * established. If request-based table is loaded: blk-mq will 2100 * override accordingly. 2101 */ 2102 md->disk = blk_alloc_disk(md->numa_node_id); 2103 if (!md->disk) 2104 goto bad; 2105 md->queue = md->disk->queue; 2106 2107 init_waitqueue_head(&md->wait); 2108 INIT_WORK(&md->work, dm_wq_work); 2109 INIT_WORK(&md->requeue_work, dm_wq_requeue_work); 2110 init_waitqueue_head(&md->eventq); 2111 init_completion(&md->kobj_holder.completion); 2112 2113 md->requeue_list = NULL; 2114 md->swap_bios = get_swap_bios(); 2115 sema_init(&md->swap_bios_semaphore, md->swap_bios); 2116 mutex_init(&md->swap_bios_lock); 2117 2118 md->disk->major = _major; 2119 md->disk->first_minor = minor; 2120 md->disk->minors = 1; 2121 md->disk->flags |= GENHD_FL_NO_PART; 2122 md->disk->fops = &dm_blk_dops; 2123 md->disk->private_data = md; 2124 sprintf(md->disk->disk_name, "dm-%d", minor); 2125 2126 dax_dev = alloc_dax(md, &dm_dax_ops); 2127 if (IS_ERR(dax_dev)) { 2128 if (PTR_ERR(dax_dev) != -EOPNOTSUPP) 2129 goto bad; 2130 } else { > 2131 set_dax_nocache(dax_dev); > 2132 set_dax_nomc(dax_dev); 2133 md->dax_dev = dax_dev; 2134 if (dax_add_host(dax_dev, md->disk)) 2135 goto bad; 2136 } 2137 2138 format_dev_t(md->name, MKDEV(_major, minor)); 2139 2140 md->wq = alloc_workqueue("kdmflush/%s", WQ_MEM_RECLAIM, 0, md->name); 2141 if (!md->wq) 2142 goto bad; 2143 2144 md->pending_io = alloc_percpu(unsigned long); 2145 if (!md->pending_io) 2146 goto bad; 2147 2148 r = dm_stats_init(&md->stats); 2149 if (r < 0) 2150 goto bad; 2151 2152 /* Populate the mapping, nobody knows we exist yet */ 2153 spin_lock(&_minor_lock); 2154 old_md = idr_replace(&_minor_idr, md, minor); 2155 spin_unlock(&_minor_lock); 2156 2157 BUG_ON(old_md != MINOR_ALLOCED); 2158 2159 return md; 2160 2161 bad: 2162 cleanup_mapped_device(md); 2163 bad_io_barrier: 2164 free_minor(minor); 2165 bad_minor: 2166 module_put(THIS_MODULE); 2167 bad_module_get: 2168 kvfree(md); 2169 return NULL; 2170 } 2171 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
