Hi Linus, Today's linux-next build (powerpc ppc64_defconfig) produced these warnings: fs/cifs/cifssmb.c: In function 'CIFSSMBNegotiate': fs/cifs/cifssmb.c:605:3: warning: 'strncpy' writing 16 bytes into a region of size 1 overflows the destination [-Wstringop-overflow=] strncpy(pSMB->DialectsArray+count, protocols[i].name, 16); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'get_sensor_index_attr', inlined from 'create_device_attrs' at drivers/hwmon/ibmpowernv.c:293:8, inlined from 'ibmpowernv_probe' at drivers/hwmon/ibmpowernv.c:699:8: drivers/hwmon/ibmpowernv.c:256:2: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(attr, dash_pos + 1, MAX_ATTR_LEN); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/hfsplus/xattr.c: In function 'copy_name': fs/hfsplus/xattr.c:416:3: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] strncpy(buffer, XATTR_MAC_OSX_PREFIX, XATTR_MAC_OSX_PREFIX_LEN); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/ext4/super.c: In function '__save_error_info': fs/ext4/super.c:344:2: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(es->s_last_error_func, func, sizeof(es->s_last_error_func)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/ext4/super.c:349:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(es->s_first_error_func, func, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sizeof(es->s_first_error_func)); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from include/trace/define_trace.h:97, from include/trace/events/writeback.h:762, from fs/fs-writeback.c:98: include/trace/events/writeback.h: In function 'perf_trace_writeback_work_class': include/trace/events/writeback.h:223:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ wb->bdi->dev ? dev_name(wb->bdi->dev) : "(unknown)", 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:222:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'perf_trace_writeback_class': include/trace/events/writeback.h:277:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, dev_name(wb->bdi->dev), 32); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:276:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'perf_trace_writeback_bdi_register': include/trace/events/writeback.h:299:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, dev_name(bdi->dev), 32); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:292:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_bdi_register, ^~~~~~~~~~~ include/trace/events/writeback.h:298:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'perf_trace_wbc_class': include/trace/events/writeback.h:324:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, dev_name(bdi->dev), 32); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:323:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'perf_trace_writeback_queue_io': include/trace/events/writeback.h:375:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, dev_name(wb->bdi->dev), 32); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:360:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_queue_io, ^~~~~~~~~~~ include/trace/events/writeback.h:373:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'perf_trace_writeback_dirty_page': include/trace/events/writeback.h:69:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ mapping ? dev_name(inode_to_bdi(mapping->host)->dev) : "(unknown)", 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:56:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_dirty_page, ^~~~~~~~~~~ include/trace/events/writeback.h:68:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'perf_trace_writeback_dirty_inode_template': include/trace/events/writeback.h:99:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:95:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'perf_trace_writeback_write_inode_template': include/trace/events/writeback.h:179:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:178:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'perf_trace_writeback_sb_inodes_requeue': include/trace/events/writeback.h:586:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:572:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_sb_inodes_requeue, ^~~~~~~~~~~ include/trace/events/writeback.h:585:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h:586:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:572:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_sb_inodes_requeue, ^~~~~~~~~~~ include/trace/events/writeback.h:585:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h:586:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:572:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_sb_inodes_requeue, ^~~~~~~~~~~ include/trace/events/writeback.h:585:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h:586:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:572:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_sb_inodes_requeue, ^~~~~~~~~~~ include/trace/events/writeback.h:585:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'perf_trace_writeback_single_inode_template': include/trace/events/writeback.h:660:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/perf.h:66:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:659:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ In file included from include/trace/define_trace.h:96, from include/trace/events/writeback.h:762, from fs/fs-writeback.c:98: include/trace/events/writeback.h: In function 'trace_event_raw_event_writeback_dirty_page': include/trace/events/writeback.h:69:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ mapping ? dev_name(inode_to_bdi(mapping->host)->dev) : "(unknown)", 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:56:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_dirty_page, ^~~~~~~~~~~ include/trace/events/writeback.h:68:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'trace_event_raw_event_writeback_dirty_inode_template': include/trace/events/writeback.h:99:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:95:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'trace_event_raw_event_writeback_write_inode_template': include/trace/events/writeback.h:179:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:178:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'trace_event_raw_event_writeback_work_class': include/trace/events/writeback.h:223:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ wb->bdi->dev ? dev_name(wb->bdi->dev) : "(unknown)", 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:222:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'trace_event_raw_event_writeback_class': include/trace/events/writeback.h:277:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, dev_name(wb->bdi->dev), 32); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:276:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'trace_event_raw_event_writeback_bdi_register': include/trace/events/writeback.h:299:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, dev_name(bdi->dev), 32); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:292:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_bdi_register, ^~~~~~~~~~~ include/trace/events/writeback.h:298:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'trace_event_raw_event_wbc_class': include/trace/events/writeback.h:324:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, dev_name(bdi->dev), 32); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:323:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'trace_event_raw_event_writeback_queue_io': include/trace/events/writeback.h:375:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, dev_name(wb->bdi->dev), 32); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:360:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_queue_io, ^~~~~~~~~~~ include/trace/events/writeback.h:373:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'trace_event_raw_event_writeback_sb_inodes_requeue': include/trace/events/writeback.h:586:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:572:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_sb_inodes_requeue, ^~~~~~~~~~~ include/trace/events/writeback.h:585:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h:586:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:572:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_sb_inodes_requeue, ^~~~~~~~~~~ include/trace/events/writeback.h:585:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h:586:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:572:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_sb_inodes_requeue, ^~~~~~~~~~~ include/trace/events/writeback.h:585:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h:586:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/trace_events.h:78:9: note: in expansion of macro 'PARAMS' PARAMS(assign), \ ^~~~~~ include/trace/events/writeback.h:572:1: note: in expansion of macro 'TRACE_EVENT' TRACE_EVENT(writeback_sb_inodes_requeue, ^~~~~~~~~~~ include/trace/events/writeback.h:585:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ include/trace/events/writeback.h: In function 'trace_event_raw_event_writeback_single_inode_template': include/trace/events/writeback.h:660:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation] strncpy(__entry->name, ^~~~~~~~~~~~~~~~~~~~~~ dev_name(inode_to_bdi(inode)->dev), 32); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:720:4: note: in definition of macro 'DECLARE_EVENT_CLASS' { assign; } \ ^~~~~~ include/trace/events/writeback.h:659:2: note: in expansion of macro 'TP_fast_assign' TP_fast_assign( ^~~~~~~~~~~~~~ In function 'i40e_ptp_create_clock', inlined from 'i40e_ptp_init' at drivers/net/ethernet/intel/i40e/i40e_ptp.c:755:8: drivers/net/ethernet/intel/i40e/i40e_ptp.c:697:2: warning: 'strncpy' specified bound 16 equals destination size [-Wstringop-truncation] strncpy(pf->ptp_caps.name, i40e_driver_name, sizeof(pf->ptp_caps.name)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/qla2xxx/qla_mr.c: In function 'qlafx00_fx_disc': drivers/scsi/qla2xxx/qla_mr.c:1882:4: warning: 'strncpy' output may be truncated copying 64 bytes from a string of length 64 [-Wstringop-truncation] strncpy(phost_info->nodename, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ p_sysid->nodename, NODENAME_LENGTH); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/qla2xxx/qla_mr.c:1886:4: warning: 'strncpy' output may be truncated copying 64 bytes from a string of length 64 [-Wstringop-truncation] strncpy(phost_info->release, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ p_sysid->release, RELEASE_LENGTH); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/qla2xxx/qla_mr.c:1888:4: warning: 'strncpy' output may be truncated copying 64 bytes from a string of length 64 [-Wstringop-truncation] strncpy(phost_info->version, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ p_sysid->version, VERSION_LENGTH); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/qla2xxx/qla_mr.c:1890:4: warning: 'strncpy' output may be truncated copying 64 bytes from a string of length 64 [-Wstringop-truncation] strncpy(phost_info->machine, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ p_sysid->machine, MACHINE_LENGTH); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/qla2xxx/qla_mr.c:1892:4: warning: 'strncpy' output may be truncated copying 64 bytes from a string of length 64 [-Wstringop-truncation] strncpy(phost_info->domainname, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ p_sysid->domainname, DOMNAME_LENGTH); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'ibmvfc_gather_partition_info', inlined from 'ibmvfc_npiv_login' at drivers/scsi/ibmvscsi/ibmvfc.c:4098:2: drivers/scsi/ibmvscsi/ibmvfc.c:1156:3: warning: 'strncpy' specified bound 97 equals destination size [-Wstringop-truncation] strncpy(vhost->partition_name, name, sizeof(vhost->partition_name)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'ibmvfc_set_login_info', inlined from 'ibmvfc_npiv_login' at drivers/scsi/ibmvscsi/ibmvfc.c:4099:2: drivers/scsi/ibmvscsi/ibmvfc.c:1194:2: warning: 'strncpy' specified bound 256 equals destination size [-Wstringop-truncation] strncpy(login_info->device_name, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ dev_name(&vhost->host->shost_gendev), IBMVFC_MAX_NAME); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/ibmvscsi/ibmvfc.c:1199:2: warning: 'strncpy' specified bound 256 equals destination size [-Wstringop-truncation] strncpy(login_info->drc_name, location, IBMVFC_MAX_NAME); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Presumably caused by my update to gcc 8.2.0. -- Cheers, Stephen Rothwell
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