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Date: Wed, 20 Dec 2023 01:26:53 +0800
From: kernel test robot <lkp@...el.com>
To: Hari Bathini <hbathini@...ux.vnet.ibm.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Michael Ellerman <mpe@...erman.id.au>
Subject: arch/powerpc/platforms/powernv/opal-core.c:96:24: sparse: sparse:
incorrect type in assignment (different base types)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 2cf4f94d8e8646803f8fb0facf134b0cd7fb691a
commit: 6f713d18144ce86c9f01cdf64222d6339e26129e powerpc/opalcore: export /sys/firmware/opal/core for analysing opal crashes
date: 4 years, 3 months ago
config: powerpc64-randconfig-r113-20231118 (https://download.01.org/0day-ci/archive/20231220/202312200144.z1CH6ZPc-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231220/202312200144.z1CH6ZPc-lkp@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312200144.z1CH6ZPc-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> arch/powerpc/platforms/powernv/opal-core.c:96:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] n_namesz @@ got restricted __be32 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:96:24: sparse: expected unsigned int [usertype] n_namesz
arch/powerpc/platforms/powernv/opal-core.c:96:24: sparse: got restricted __be32 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:97:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] n_descsz @@ got restricted __be32 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:97:24: sparse: expected unsigned int [usertype] n_descsz
arch/powerpc/platforms/powernv/opal-core.c:97:24: sparse: got restricted __be32 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:98:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] n_type @@ got restricted __be32 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:98:24: sparse: expected unsigned int [usertype] n_type
arch/powerpc/platforms/powernv/opal-core.c:98:24: sparse: got restricted __be32 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:119:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected int [usertype] pr_pid @@ got restricted __be32 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:119:27: sparse: expected int [usertype] pr_pid
arch/powerpc/platforms/powernv/opal-core.c:119:27: sparse: got restricted __be32 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:120:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected int [usertype] pr_ppid @@ got restricted __be32 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:120:27: sparse: expected int [usertype] pr_ppid
arch/powerpc/platforms/powernv/opal-core.c:120:27: sparse: got restricted __be32 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:130:37: sparse: sparse: incorrect type in assignment (different base types) @@ expected short pr_cursig @@ got restricted __be16 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:130:37: sparse: expected short pr_cursig
arch/powerpc/platforms/powernv/opal-core.c:130:37: sparse: got restricted __be16 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:143:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] @@ got restricted __be64 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:143:21: sparse: expected unsigned long long [usertype]
arch/powerpc/platforms/powernv/opal-core.c:143:21: sparse: got restricted __be64 [usertype]
arch/powerpc/platforms/powernv/opal-core.c:144:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] @@ got restricted __be64 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:144:21: sparse: expected unsigned long long [usertype]
arch/powerpc/platforms/powernv/opal-core.c:144:21: sparse: got restricted __be64 [usertype]
arch/powerpc/platforms/powernv/opal-core.c:147:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] @@ got restricted __be64 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:147:21: sparse: expected unsigned long long [usertype]
arch/powerpc/platforms/powernv/opal-core.c:147:21: sparse: got restricted __be64 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:274:17: sparse: sparse: cast to restricted __be64
>> arch/powerpc/platforms/powernv/opal-core.c:274:17: sparse: sparse: cast to restricted __be64
>> arch/powerpc/platforms/powernv/opal-core.c:360:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] e_type @@ got restricted __be16 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:360:21: sparse: expected unsigned short [usertype] e_type
arch/powerpc/platforms/powernv/opal-core.c:360:21: sparse: got restricted __be16 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:361:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] e_machine @@ got restricted __be16 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:361:24: sparse: expected unsigned short [usertype] e_machine
arch/powerpc/platforms/powernv/opal-core.c:361:24: sparse: got restricted __be16 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:362:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] e_version @@ got restricted __be32 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:362:24: sparse: expected unsigned int [usertype] e_version
arch/powerpc/platforms/powernv/opal-core.c:362:24: sparse: got restricted __be32 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:364:22: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] e_phoff @@ got restricted __be64 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:364:22: sparse: expected unsigned long long [usertype] e_phoff
arch/powerpc/platforms/powernv/opal-core.c:364:22: sparse: got restricted __be64 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:368:23: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] e_ehsize @@ got restricted __be16 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:368:23: sparse: expected unsigned short [usertype] e_ehsize
arch/powerpc/platforms/powernv/opal-core.c:368:23: sparse: got restricted __be16 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:369:26: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] e_phentsize @@ got restricted __be16 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:369:26: sparse: expected unsigned short [usertype] e_phentsize
arch/powerpc/platforms/powernv/opal-core.c:369:26: sparse: got restricted __be16 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:377:25: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] p_type @@ got restricted __be32 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:377:25: sparse: expected unsigned int [usertype] p_type
arch/powerpc/platforms/powernv/opal-core.c:377:25: sparse: got restricted __be32 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:381:25: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] p_offset @@ got restricted __be64 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:381:25: sparse: expected unsigned long long [usertype] p_offset
arch/powerpc/platforms/powernv/opal-core.c:381:25: sparse: got restricted __be64 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:382:41: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] p_memsz @@ got restricted __be64 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:382:41: sparse: expected unsigned long long [usertype] p_memsz
arch/powerpc/platforms/powernv/opal-core.c:382:41: sparse: got restricted __be64 [usertype]
arch/powerpc/platforms/powernv/opal-core.c:391:33: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] p_type @@ got restricted __be32 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:391:33: sparse: expected unsigned int [usertype] p_type
arch/powerpc/platforms/powernv/opal-core.c:391:33: sparse: got restricted __be32 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:392:33: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] p_flags @@ got restricted __be32 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:392:33: sparse: expected unsigned int [usertype] p_flags
arch/powerpc/platforms/powernv/opal-core.c:392:33: sparse: got restricted __be32 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:403:33: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] p_paddr @@ got restricted __be64 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:403:33: sparse: expected unsigned long long [usertype] p_paddr
arch/powerpc/platforms/powernv/opal-core.c:403:33: sparse: got restricted __be64 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:404:33: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] p_vaddr @@ got restricted __be64 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:404:33: sparse: expected unsigned long long [usertype] p_vaddr
arch/powerpc/platforms/powernv/opal-core.c:404:33: sparse: got restricted __be64 [usertype]
arch/powerpc/platforms/powernv/opal-core.c:405:50: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] p_memsz @@ got restricted __be64 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:405:50: sparse: expected unsigned long long [usertype] p_memsz
arch/powerpc/platforms/powernv/opal-core.c:405:50: sparse: got restricted __be64 [usertype]
arch/powerpc/platforms/powernv/opal-core.c:407:33: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] p_offset @@ got restricted __be64 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:407:33: sparse: expected unsigned long long [usertype] p_offset
arch/powerpc/platforms/powernv/opal-core.c:407:33: sparse: got restricted __be64 [usertype]
>> arch/powerpc/platforms/powernv/opal-core.c:414:22: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] e_phnum @@ got restricted __be16 [usertype] @@
arch/powerpc/platforms/powernv/opal-core.c:414:22: sparse: expected unsigned short [usertype] e_phnum
arch/powerpc/platforms/powernv/opal-core.c:414:22: sparse: got restricted __be16 [usertype]
arch/powerpc/platforms/powernv/opal-core.c:479:16: sparse: sparse: cast to restricted __be64
arch/powerpc/platforms/powernv/opal-core.c:490:16: sparse: sparse: cast to restricted __be64
arch/powerpc/platforms/powernv/opal-core.c: note: in included file:
arch/powerpc/platforms/powernv/opal-fadump.h:134:33: sparse: sparse: restricted __be64 degrades to integer
vim +96 arch/powerpc/platforms/powernv/opal-core.c
88
89 static Elf64_Word *append_elf64_note(Elf64_Word *buf, char *name,
90 u32 type, void *data,
91 size_t data_len)
92 {
93 Elf64_Nhdr *note = (Elf64_Nhdr *)buf;
94 Elf64_Word namesz = strlen(name) + 1;
95
> 96 note->n_namesz = cpu_to_be32(namesz);
> 97 note->n_descsz = cpu_to_be32(data_len);
> 98 note->n_type = cpu_to_be32(type);
99 buf += DIV_ROUND_UP(sizeof(*note), sizeof(Elf64_Word));
100 memcpy(buf, name, namesz);
101 buf += DIV_ROUND_UP(namesz, sizeof(Elf64_Word));
102 memcpy(buf, data, data_len);
103 buf += DIV_ROUND_UP(data_len, sizeof(Elf64_Word));
104
105 return buf;
106 }
107
108 static void fill_prstatus(struct elf_prstatus *prstatus, int pir,
109 struct pt_regs *regs)
110 {
111 memset(prstatus, 0, sizeof(struct elf_prstatus));
112 elf_core_copy_kernel_regs(&(prstatus->pr_reg), regs);
113
114 /*
115 * Overload PID with PIR value.
116 * As a PIR value could also be '0', add an offset of '100'
117 * to every PIR to avoid misinterpretations in GDB.
118 */
> 119 prstatus->pr_pid = cpu_to_be32(100 + pir);
> 120 prstatus->pr_ppid = cpu_to_be32(1);
121
122 /*
123 * Indicate SIGUSR1 for crash initiated from kernel.
124 * SIGTERM otherwise.
125 */
126 if (pir == oc_conf->crashing_cpu) {
127 short sig;
128
129 sig = kernel_initiated ? SIGUSR1 : SIGTERM;
> 130 prstatus->pr_cursig = cpu_to_be16(sig);
131 }
132 }
133
134 static Elf64_Word *auxv_to_elf64_notes(Elf64_Word *buf,
135 u64 opal_boot_entry)
136 {
137 Elf64_Off *bufp = (Elf64_Off *)oc_conf->auxv_buf;
138 int idx = 0;
139
140 memset(bufp, 0, AUXV_DESC_SZ);
141
142 /* Entry point of OPAL */
> 143 bufp[idx++] = cpu_to_be64(AT_ENTRY);
144 bufp[idx++] = cpu_to_be64(opal_boot_entry);
145
146 /* end of vector */
147 bufp[idx++] = cpu_to_be64(AT_NULL);
148
149 buf = append_elf64_note(buf, CRASH_CORE_NOTE_NAME, NT_AUXV,
150 oc_conf->auxv_buf, AUXV_DESC_SZ);
151 return buf;
152 }
153
154 /*
155 * Read from the ELF header and then the crash dump.
156 * Returns number of bytes read on success, -errno on failure.
157 */
158 static ssize_t read_opalcore(struct file *file, struct kobject *kobj,
159 struct bin_attribute *bin_attr, char *to,
160 loff_t pos, size_t count)
161 {
162 struct opalcore *m;
163 ssize_t tsz, avail;
164 loff_t tpos = pos;
165
166 if (pos >= oc_conf->opalcore_size)
167 return 0;
168
169 /* Adjust count if it goes beyond opalcore size */
170 avail = oc_conf->opalcore_size - pos;
171 if (count > avail)
172 count = avail;
173
174 if (count == 0)
175 return 0;
176
177 /* Read ELF core header and/or PT_NOTE segment */
178 if (tpos < oc_conf->opalcorebuf_sz) {
179 tsz = min_t(size_t, oc_conf->opalcorebuf_sz - tpos, count);
180 memcpy(to, oc_conf->opalcorebuf + tpos, tsz);
181 to += tsz;
182 tpos += tsz;
183 count -= tsz;
184 }
185
186 list_for_each_entry(m, &opalcore_list, list) {
187 /* nothing more to read here */
188 if (count == 0)
189 break;
190
191 if (tpos < m->offset + m->size) {
192 void *addr;
193
194 tsz = min_t(size_t, m->offset + m->size - tpos, count);
195 addr = (void *)(m->paddr + tpos - m->offset);
196 memcpy(to, __va(addr), tsz);
197 to += tsz;
198 tpos += tsz;
199 count -= tsz;
200 }
201 }
202
203 return (tpos - pos);
204 }
205
206 static struct bin_attribute opal_core_attr = {
207 .attr = {.name = "core", .mode = 0400},
208 .read = read_opalcore
209 };
210
211 /*
212 * Read CPU state dump data and convert it into ELF notes.
213 *
214 * Each register entry is of 16 bytes, A numerical identifier along with
215 * a GPR/SPR flag in the first 8 bytes and the register value in the next
216 * 8 bytes. For more details refer to F/W documentation.
217 */
218 static Elf64_Word * __init opalcore_append_cpu_notes(Elf64_Word *buf)
219 {
220 u32 thread_pir, size_per_thread, regs_offset, regs_cnt, reg_esize;
221 struct hdat_fadump_thread_hdr *thdr;
222 struct elf_prstatus prstatus;
223 Elf64_Word *first_cpu_note;
224 struct pt_regs regs;
225 char *bufp;
226 int i;
227
228 size_per_thread = oc_conf->cpu_state_entry_size;
229 bufp = __va(oc_conf->cpu_state_destination_vaddr);
230
231 /*
232 * Offset for register entries, entry size and registers count is
233 * duplicated in every thread header in keeping with HDAT format.
234 * Use these values from the first thread header.
235 */
236 thdr = (struct hdat_fadump_thread_hdr *)bufp;
237 regs_offset = (offsetof(struct hdat_fadump_thread_hdr, offset) +
238 be32_to_cpu(thdr->offset));
239 reg_esize = be32_to_cpu(thdr->esize);
240 regs_cnt = be32_to_cpu(thdr->ecnt);
241
242 pr_debug("--------CPU State Data------------\n");
243 pr_debug("NumCpus : %u\n", oc_conf->num_cpus);
244 pr_debug("\tOffset: %u, Entry size: %u, Cnt: %u\n",
245 regs_offset, reg_esize, regs_cnt);
246
247 /*
248 * Skip past the first CPU note. Fill this note with the
249 * crashing CPU's prstatus.
250 */
251 first_cpu_note = buf;
252 buf = append_elf64_note(buf, CRASH_CORE_NOTE_NAME, NT_PRSTATUS,
253 &prstatus, sizeof(prstatus));
254
255 for (i = 0; i < oc_conf->num_cpus; i++, bufp += size_per_thread) {
256 thdr = (struct hdat_fadump_thread_hdr *)bufp;
257 thread_pir = be32_to_cpu(thdr->pir);
258
259 pr_debug("[%04d] PIR: 0x%x, core state: 0x%02x\n",
260 i, thread_pir, thdr->core_state);
261
262 /*
263 * Register state data of MAX cores is provided by firmware,
264 * but some of this cores may not be active. So, while
265 * processing register state data, check core state and
266 * skip threads that belong to inactive cores.
267 */
268 if (thdr->core_state == HDAT_FADUMP_CORE_INACTIVE)
269 continue;
270
271 opal_fadump_read_regs((bufp + regs_offset), regs_cnt,
272 reg_esize, false, ®s);
273
> 274 pr_debug("PIR 0x%x - R1 : 0x%llx, NIP : 0x%llx\n", thread_pir,
275 be64_to_cpu(regs.gpr[1]), be64_to_cpu(regs.nip));
276 fill_prstatus(&prstatus, thread_pir, ®s);
277
278 if (thread_pir != oc_conf->crashing_cpu) {
279 buf = append_elf64_note(buf, CRASH_CORE_NOTE_NAME,
280 NT_PRSTATUS, &prstatus,
281 sizeof(prstatus));
282 } else {
283 /*
284 * Add crashing CPU as the first NT_PRSTATUS note for
285 * GDB to process the core file appropriately.
286 */
287 append_elf64_note(first_cpu_note, CRASH_CORE_NOTE_NAME,
288 NT_PRSTATUS, &prstatus,
289 sizeof(prstatus));
290 }
291 }
292
293 return buf;
294 }
295
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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