Messages in this thread | | | Date | Sat, 29 Jul 2023 02:07:05 +0800 | From | kernel test robot <> | Subject | drivers/bus/fsl-mc/dprc.c:494:9: warning: 'strncpy' specified bound 16 equals destination size |
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Hi Rohan,
FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 57012c57536f8814dec92e74197ee96c3498d24e commit: 95567f46b4d20c047750a5e3029461afcdc67697 powerpc/{32,book3e}: kcsan: Extend KCSAN Support date: 7 weeks ago config: powerpc-randconfig-r032-20230728 (https://download.01.org/0day-ci/archive/20230729/202307290251.hKiztLyo-lkp@intel.com/config) compiler: powerpc-linux-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230729/202307290251.hKiztLyo-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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202307290251.hKiztLyo-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/bus/fsl-mc/dprc.c: In function 'dprc_get_obj': drivers/bus/fsl-mc/dprc.c:453:9: warning: 'strncpy' output may be truncated copying 15 bytes from a string of length 15 [-Wstringop-truncation] 453 | strncpy(obj_desc->type, rsp_params->type, 16); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/fsl-mc/dprc.c:455:9: warning: 'strncpy' output may be truncated copying 15 bytes from a string of length 15 [-Wstringop-truncation] 455 | strncpy(obj_desc->label, rsp_params->label, 16); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/fsl-mc/dprc.c: In function 'dprc_set_obj_irq': >> drivers/bus/fsl-mc/dprc.c:494:9: warning: 'strncpy' specified bound 16 equals destination size [-Wstringop-truncation] 494 | strncpy(cmd_params->obj_type, obj_type, 16); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bus/fsl-mc/dprc.c: In function 'dprc_get_obj_region': drivers/bus/fsl-mc/dprc.c:567:9: warning: 'strncpy' specified bound 16 equals destination size [-Wstringop-truncation] 567 | strncpy(cmd_params->obj_type, obj_type, 16); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/strncpy +494 drivers/bus/fsl-mc/dprc.c
31c889653c10dd drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-03-05 460 e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 461 /** e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 462 * dprc_set_obj_irq() - Set IRQ information for object to trigger an interrupt. e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 463 * @mc_io: Pointer to MC portal's I/O object e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 464 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 465 * @token: Token of DPRC object e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 466 * @obj_type: Type of the object to set its IRQ e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 467 * @obj_id: ID of the object to set its IRQ e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 468 * @irq_index: The interrupt index to configure e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 469 * @irq_cfg: IRQ configuration e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 470 * e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 471 * Return: '0' on Success; Error code otherwise. e9bf3f206bd5e6 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-24 472 */ 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 473 int dprc_set_obj_irq(struct fsl_mc_io *mc_io, ba72f25b2588e1 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-25 474 u32 cmd_flags, ba72f25b2588e1 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-25 475 u16 token, 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 476 char *obj_type, 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 477 int obj_id, ba72f25b2588e1 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-25 478 u8 irq_index, 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 479 struct dprc_irq_cfg *irq_cfg) 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 480 { 5b04cedeca1888 drivers/bus/fsl-mc/dprc.c Ioana Ciornei 2018-03-15 481 struct fsl_mc_command cmd = { 0 }; 9989b59961a8ad drivers/staging/fsl-mc/bus/dprc.c Ioana Radulescu 2016-06-22 482 struct dprc_cmd_set_obj_irq *cmd_params; 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 483 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 484 /* prepare command */ 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 485 cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_OBJ_IRQ, 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 486 cmd_flags, 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 487 token); 9989b59961a8ad drivers/staging/fsl-mc/bus/dprc.c Ioana Radulescu 2016-06-22 488 cmd_params = (struct dprc_cmd_set_obj_irq *)cmd.params; 9989b59961a8ad drivers/staging/fsl-mc/bus/dprc.c Ioana Radulescu 2016-06-22 489 cmd_params->irq_val = cpu_to_le32(irq_cfg->val); 9989b59961a8ad drivers/staging/fsl-mc/bus/dprc.c Ioana Radulescu 2016-06-22 490 cmd_params->irq_index = irq_index; 9989b59961a8ad drivers/staging/fsl-mc/bus/dprc.c Ioana Radulescu 2016-06-22 491 cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr); 9989b59961a8ad drivers/staging/fsl-mc/bus/dprc.c Ioana Radulescu 2016-06-22 492 cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num); 9989b59961a8ad drivers/staging/fsl-mc/bus/dprc.c Ioana Radulescu 2016-06-22 493 cmd_params->obj_id = cpu_to_le32(obj_id); 9989b59961a8ad drivers/staging/fsl-mc/bus/dprc.c Ioana Radulescu 2016-06-22 @494 strncpy(cmd_params->obj_type, obj_type, 16); 9989b59961a8ad drivers/staging/fsl-mc/bus/dprc.c Ioana Radulescu 2016-06-22 495 cmd_params->obj_type[15] = '\0'; 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 496 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 497 /* send command to mc*/ 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 498 return mc_send_command(mc_io, &cmd); 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 499 } c9d57ea0b6fb0b drivers/staging/fsl-mc/bus/dprc.c Laurentiu Tudor 2017-11-17 500 EXPORT_SYMBOL_GPL(dprc_set_obj_irq); 1ee695fab32e25 drivers/staging/fsl-mc/bus/dprc.c J. German Rivera 2015-09-23 501
:::::: The code at line 494 was first introduced by commit :::::: 9989b59961a8ad55d92df4588b556f0c6c838ec7 staging: fsl-mc: convert mc command build/parse to use C structs
:::::: TO: Ioana Radulescu <ruxandra.radulescu@nxp.com> :::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
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