CC: [email protected] CC: [email protected] CC: [email protected] TO: Yuri Nudelman <[email protected]> CC: Oded Gabbay <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git habanalabs-next head: ed1ec0f6c655003eb3f092f47e98181646e88173 commit: 2b6cdda5981340a654d48826992fbb07c59f6c68 [11/40] habanalabs: expose state dump :::::: branch date: 15 hours ago :::::: commit date: 15 hours ago config: x86_64-randconfig-c001-20210727 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c658b472f3e61e1818e1909bf02f3d65470018a5) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git/commit/?id=2b6cdda5981340a654d48826992fbb07c59f6c68 git remote add ogabbay https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git git fetch --no-tags ogabbay habanalabs-next git checkout 2b6cdda5981340a654d48826992fbb07c59f6c68 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> clang-analyzer warnings: (new ones prefixed by >>) include/linux/rcupdate.h:390:2: note: expanded from macro '__rcu_dereference_check' RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \ ^ include/linux/rcupdate.h:318:11: note: expanded from macro 'RCU_LOCKDEP_WARN' if ((c) && debug_lockdep_rcu_enabled() && !__warned) { \ ^ fs/ext4/resize.c:1232:13: note: Loop condition is false. Exiting loop gdb_bh = sbi_array_rcu_deref(sbi, s_group_desc, ^ fs/ext4/ext4.h:1729:21: note: expanded from macro 'sbi_array_rcu_deref' _v = ((typeof(_v)*)rcu_dereference((sbi)->field))[index]; \ ^ include/linux/rcupdate.h:596:28: note: expanded from macro 'rcu_dereference' #define rcu_dereference(p) rcu_dereference_check(p, 0) ^ include/linux/rcupdate.h:528:2: note: expanded from macro 'rcu_dereference_check' __rcu_dereference_check((p), (c) || rcu_read_lock_held(), __rcu) ^ include/linux/rcupdate.h:390:2: note: expanded from macro '__rcu_dereference_check' RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \ ^ include/linux/rcupdate.h:316:2: note: expanded from macro 'RCU_LOCKDEP_WARN' do { \ ^ fs/ext4/resize.c:1234:4: note: Loop condition is false. Exiting loop BUFFER_TRACE(gdb_bh, "get_write_access"); ^ include/linux/jbd2.h:1835:32: note: expanded from macro 'BUFFER_TRACE' #define BUFFER_TRACE(bh, info) do {} while (0) ^ fs/ext4/resize.c:1237:8: note: Assuming 'err' is 0 if (!err && reserved_gdb && ext4_bg_num_gdb(sb, group)) ^~~~ fs/ext4/resize.c:1237:8: note: Left side of '&&' is true fs/ext4/resize.c:1237:16: note: Assuming 'reserved_gdb' is not equal to 0 if (!err && reserved_gdb && ext4_bg_num_gdb(sb, group)) ^~~~~~~~~~~~ fs/ext4/resize.c:1237:8: note: Left side of '&&' is true if (!err && reserved_gdb && ext4_bg_num_gdb(sb, group)) ^ fs/ext4/resize.c:1237:32: note: Assuming the condition is true if (!err && reserved_gdb && ext4_bg_num_gdb(sb, group)) ^~~~~~~~~~~~~~~~~~~~~~~~~~ fs/ext4/resize.c:1237:4: note: Taking true branch if (!err && reserved_gdb && ext4_bg_num_gdb(sb, group)) ^ fs/ext4/resize.c:1238:38: note: Passing null pointer value via 2nd parameter 'inode' err = reserve_backup_gdb(handle, resize_inode, group); ^~~~~~~~~~~~ fs/ext4/resize.c:1238:11: note: Calling 'reserve_backup_gdb' err = reserve_backup_gdb(handle, resize_inode, group); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/ext4/resize.c:988:27: note: Access to field 'i_sb' results in a dereference of a null pointer (loaded from variable 'inode') struct super_block *sb = inode->i_sb; ^~~~~ fs/ext4/resize.c:1921:3: warning: Value stored to 'err' is never read [clang-analyzer-deadcode.DeadStores] err = ret; ^ ~~~ fs/ext4/resize.c:1921:3: note: Value stored to 'err' is never read err = ret; ^ ~~~ Suppressed 6 warnings (6 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. drivers/misc/habanalabs/common/firmware_if.c:1231:2: warning: Value stored to 'cpu_boot_dev_sts1' is never read [clang-analyzer-deadcode.DeadStores] cpu_boot_dev_sts1 = prop->fw_preboot_cpu_boot_dev_sts1; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/habanalabs/common/firmware_if.c:1231:2: note: Value stored to 'cpu_boot_dev_sts1' is never read cpu_boot_dev_sts1 = prop->fw_preboot_cpu_boot_dev_sts1; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/habanalabs/common/firmware_if.c:1516:2: warning: Value stored to 'rc' is never read [clang-analyzer-deadcode.DeadStores] rc = hl_fw_dynamic_send_clear_cmd(hdev, fw_loader); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/habanalabs/common/firmware_if.c:1516:2: note: Value stored to 'rc' is never read rc = hl_fw_dynamic_send_clear_cmd(hdev, fw_loader); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 8 warnings generated. >> drivers/misc/habanalabs/common/state_dump.c:434:2: warning: Value stored to >> 'rc' is never read [clang-analyzer-deadcode.DeadStores] rc = hl_snprintf_resize(&buf, &size, &offset, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/misc/habanalabs/common/state_dump.c:434:2: note: Value stored to 'rc' is never read rc = hl_snprintf_resize(&buf, &size, &offset, ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. drivers/hid/hid-kye.c:684:6: warning: Access to field 'maxfield' results in a dereference of an undefined pointer value (loaded from variable 'report') [clang-analyzer-core.NullDereference] if (report->maxfield < 1 || report->field[0]->report_count < 7) { ^ drivers/hid/hid-kye.c:708:6: note: Assuming 'ret' is 0 if (ret) { ^~~ drivers/hid/hid-kye.c:708:2: note: Taking false branch if (ret) { ^ drivers/hid/hid-kye.c:714:6: note: Assuming 'ret' is 0 if (ret) { ^~~ drivers/hid/hid-kye.c:714:2: note: Taking false branch if (ret) { ^ drivers/hid/hid-kye.c:719:2: note: Control jumps to 'case 20501:' at line 725 switch (id->product) { ^ drivers/hid/hid-kye.c:726:9: note: Calling 'kye_tablet_enable' ret = kye_tablet_enable(hdev); ^~~~~~~~~~~~~~~~~~~~~~~ drivers/hid/hid-kye.c:669:2: note: 'report' declared without an initial value struct hid_report *report; ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/hid/hid-kye.c:673:2: note: Loop condition is false. Execution continues on line 679 list_for_each(head, list) { ^ include/linux/list.h:571:2: note: expanded from macro 'list_for_each' for (pos = (head)->next; pos != (head); pos = pos->next) ^ drivers/hid/hid-kye.c:679:6: note: Assuming 'head' is not equal to 'list' if (head == list) { ^~~~~~~~~~~~ drivers/hid/hid-kye.c:679:2: note: Taking false branch if (head == list) { ^ drivers/hid/hid-kye.c:684:6: note: Access to field 'maxfield' results in a dereference of an undefined pointer value (loaded from variable 'report') if (report->maxfield < 1 || report->field[0]->report_count < 7) { ^~~~~~ Suppressed 5 warnings (5 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 6 warnings generated. include/linux/hid.h:1007:9: warning: Access to field 'name' results in a dereference of a null pointer (loaded from variable 'input') [clang-analyzer-core.NullDereference] input->name, c, type); ^ drivers/hid/hid-lcpower.c:24:6: note: Assuming the condition is false if ((usage->hid & HID_USAGE_PAGE) != HID_UP_LOGIVENDOR) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/hid/hid-lcpower.c:24:2: note: Taking false branch if ((usage->hid & HID_USAGE_PAGE) != HID_UP_LOGIVENDOR) ^ drivers/hid/hid-lcpower.c:27:2: note: Control jumps to 'case 73:' at line 30 switch (usage->hid & HID_USAGE) { ^ drivers/hid/hid-lcpower.c:30:21: note: Calling 'hid_map_usage_clear' case 0x049: ts_map_key_clear(KEY_BLUE); break; ^ drivers/hid/hid-lcpower.c:18:29: note: expanded from macro 'ts_map_key_clear' #define ts_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/hid.h:1035:2: note: Calling 'hid_map_usage' hid_map_usage(hidinput, usage, bit, max, type, c); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/hid.h:982:2: note: 'input' initialized here struct input_dev *input = hidinput->input; ^~~~~~~~~~~~~~~~~~~~~~~ include/linux/hid.h:986:2: note: Control jumps to 'case 1:' at line 995 switch (type) { ^ include/linux/hid.h:998:3: note: Execution continues on line 1005 break; ^ include/linux/hid.h:1005:15: note: 'c' is <= 'limit' if (unlikely(c > limit || !bmap)) { ^ include/linux/compiler.h:48:41: note: expanded from macro 'unlikely' # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) ^ include/linux/compiler.h:33:34: note: expanded from macro '__branch_check__' ______r = __builtin_expect(!!(x), expect); \ ^ include/linux/hid.h:1005:15: note: Left side of '||' is false if (unlikely(c > limit || !bmap)) { ^ include/linux/hid.h:1005:28: note: Assuming 'bmap' is null if (unlikely(c > limit || !bmap)) { ^ include/linux/compiler.h:48:41: note: expanded from macro 'unlikely' # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) ^ include/linux/compiler.h:33:34: note: expanded from macro '__branch_check__' ______r = __builtin_expect(!!(x), expect); \ vim +/rc +434 drivers/misc/habanalabs/common/state_dump.c 2b6cdda5981340 Yuri Nudelman 2021-06-06 423 2b6cdda5981340 Yuri Nudelman 2021-06-06 424 /** 2b6cdda5981340 Yuri Nudelman 2021-06-06 425 * hl_state_dump() - dump system state 2b6cdda5981340 Yuri Nudelman 2021-06-06 426 * @hdev: pointer to device structure 2b6cdda5981340 Yuri Nudelman 2021-06-06 427 */ 2b6cdda5981340 Yuri Nudelman 2021-06-06 428 int hl_state_dump(struct hl_device *hdev) 2b6cdda5981340 Yuri Nudelman 2021-06-06 429 { 2b6cdda5981340 Yuri Nudelman 2021-06-06 430 char *buf = NULL; 2b6cdda5981340 Yuri Nudelman 2021-06-06 431 size_t offset = 0, size = 0; 2b6cdda5981340 Yuri Nudelman 2021-06-06 432 int rc; 2b6cdda5981340 Yuri Nudelman 2021-06-06 433 2b6cdda5981340 Yuri Nudelman 2021-06-06 @434 rc = hl_snprintf_resize(&buf, &size, &offset, --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
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