Buildresult: linus/s390-allyesconfig/s390x-gcc4.6 built on Jan 24 2019, 08:05

kisskb

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Status:	OK
Date/Time:	Jan 24 2019, 08:05
Duration:	0:09:23.023543
Builder:	ka2
Revision:	Revert "Change mincore() to count "mapped" pages rather than "cached" pages" (`30bac164aca750892b93eef350439a0562a68647)`
Target:	linus/s390-allyesconfig/s390x-gcc4.6
Branch:	linus
Compiler:	s390x-gcc4.6 (s390x-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	allyesconfig (download)
Log:	Download original Possible warnings (100) kernel/cgroup/cgroup-v1.c:1263:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] kernel/events/core.c:7651:1: warning: 'perf_log_throttle' uses dynamic stack allocation [enabled by default] kernel/events/core.c:9163:1: warning: 'perf_swevent_hrtimer' uses dynamic stack allocation [enabled by default] kernel/events/core.c:7692:1: warning: 'perf_log_itrace_start' uses dynamic stack allocation [enabled by default] kernel/events/core.c:6581:1: warning: 'perf_event_read_event' uses dynamic stack allocation [enabled by default] kernel/events/core.c:6860:1: warning: 'perf_event_task_output' uses dynamic stack allocation [enabled by default] kernel/events/core.c:7216:1: warning: 'perf_event_mmap_output' uses dynamic stack allocation [enabled by default] kernel/events/core.c:7053:1: warning: 'perf_event_namespaces_output' uses dynamic stack allocation [enabled by default] kernel/events/core.c:6954:1: warning: 'perf_event_comm_output' uses dynamic stack allocation [enabled by default] kernel/events/core.c:7580:1: warning: 'perf_event_switch_output' uses dynamic stack allocation [enabled by default] kernel/events/core.c:7488:1: warning: 'perf_event_aux_event' uses dynamic stack allocation [enabled by default] kernel/events/core.c:7521:1: warning: 'perf_log_lost_samples' uses dynamic stack allocation [enabled by default] kernel/events/core.c:8331:1: warning: 'perf_tp_event' uses dynamic stack allocation [enabled by default] kernel/events/core.c:8017:1: warning: '___perf_sw_event' uses dynamic stack allocation [enabled by default] kernel/events/ring_buffer.c:238:1: warning: 'perf_output_begin_forward' uses dynamic stack allocation [enabled by default] kernel/events/ring_buffer.c:244:1: warning: 'perf_output_begin_backward' uses dynamic stack allocation [enabled by default] kernel/events/ring_buffer.c:252:1: warning: 'perf_output_begin' uses dynamic stack allocation [enabled by default] fs/afs/dynroot.c:126:6: warning: 'len' may be used uninitialized in this function [-Wuninitialized] drivers/atm/ambassador.c:1762:3: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] kernel/smp.c:307:1: warning: 'smp_call_function_single' uses dynamic stack allocation [enabled by default] arch/s390/kernel/perf_cpum_sf.c:1075:1: warning: 'perf_push_sample' uses dynamic stack allocation [enabled by default] mm/hugetlb.c:1434:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] include/asm-generic/io.h:232:15: warning: 'px_is' may be used uninitialized in this function [-Wuninitialized] include/asm-generic/io.h:232:15: warning: 'px_cmd' may be used uninitialized in this function [-Wuninitialized] mm/slub.c:2167:1: warning: 'deactivate_slab.isra.50' uses dynamic stack allocation [enabled by default] mm/slub.c:2235:1: warning: 'unfreeze_partials.isra.51' uses dynamic stack allocation [enabled by default] mm/slub.c:1874:1: warning: 'get_partial_node.isra.52' uses dynamic stack allocation [enabled by default] mm/slub.c:2620:1: warning: '___slab_alloc' uses dynamic stack allocation [enabled by default] mm/slub.c:2921:1: warning: '__slab_free' uses dynamic stack allocation [enabled by default] sound/hda/hdac_regmap.c:282:16: warning: 'err' may be used uninitialized in this function [-Wuninitialized] kernel/rseq.c:249:1: warning: 'rseq_ip_fixup' uses dynamic stack allocation [enabled by default] kernel/rseq.c:301:1: warning: 'rseq_syscall' uses dynamic stack allocation [enabled by default] drivers/base/regmap/regmap.c:2594:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] kernel/trace/trace_dynevent.c:89:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:1855:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] net/bridge/netfilter/ebtables.c:1908:1: warning: 'compat_copy_everything_to_user' uses dynamic stack allocation [enabled by default] net/bridge/br_device.c:232:1: warning: 'br_get_stats64' uses dynamic stack allocation [enabled by default] net/bridge/br_netlink.c:591:10: warning: 'err' may be used uninitialized in this function [-Wuninitialized] drivers/s390/scsi/zfcp_erp.c:262:2: warning: 'erp_action' may be used uninitialized in this function [-Wuninitialized] fs/btrfs/ref-verify.c:503:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] fs/btrfs/ref-verify.c:555:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/s390/net/ism_drv.c:84:1: warning: 'query_info' uses dynamic stack allocation [enabled by default] drivers/s390/net/ism_drv.c:111:1: warning: 'register_sba' uses dynamic stack allocation [enabled by default] drivers/s390/net/ism_drv.c:140:1: warning: 'register_ieq' uses dynamic stack allocation [enabled by default] drivers/s390/net/ism_drv.c:209:1: warning: 'ism_query_rgid' uses dynamic stack allocation [enabled by default] drivers/s390/net/ism_drv.c:296:1: warning: 'ism_unregister_dmb' uses dynamic stack allocation [enabled by default] drivers/s390/net/ism_drv.c:310:1: warning: 'ism_add_vlan_id' uses dynamic stack allocation [enabled by default] drivers/s390/net/ism_drv.c:324:1: warning: 'ism_del_vlan_id' uses dynamic stack allocation [enabled by default] drivers/s390/net/ism_drv.c:352:1: warning: 'ism_signal_ieq' uses dynamic stack allocation [enabled by default] drivers/s390/net/ism_drv.c:486:1: warning: 'ism_dev_init' uses dynamic stack allocation [enabled by default] drivers/s390/net/ism_drv.c:275:1: warning: 'ism_register_dmb' uses dynamic stack allocation [enabled by default] net/ncsi/ncsi-manage.c:676:19: warning: 'vid' may be used uninitialized in this function [-Wuninitialized] sound/soc/codecs/arizona.c:1893:3: warning: 'aif_rx_state' may be used uninitialized in this function [-Wuninitialized] sound/soc/codecs/arizona.c:1890:3: warning: 'aif_tx_state' may be used uninitialized in this function [-Wuninitialized] drivers/crypto/chelsio/chtls/chtls_cm.c:405:1: warning: 'wait_for_states.constprop.23' uses dynamic stack allocation [enabled by default] sound/soc/codecs/da7219-aad.c:321:17: warning: 'pll_ctrl' may be used uninitialized in this function [-Wuninitialized] fs/f2fs/file.c:2937:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized] drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c:593:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] lib/test_ubsan.c:67:1: warning: 'test_ubsan_out_of_bounds' uses dynamic stack allocation [enabled by default] lib/test_ubsan.c:51:1: warning: 'test_ubsan_vla_bound_not_positive' uses dynamic stack allocation [enabled by default] cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default] net/sunrpc/stats.c:268:1: warning: 'rpc_clnt_show_stats' uses dynamic stack allocation [enabled by default] drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] sound/soc/codecs/rt5665.c:2666:33: warning: 'val2' may be used uninitialized in this function [-Wuninitialized] sound/soc/codecs/rt5665.c:2663:33: warning: 'val1' may be used uninitialized in this function [-Wuninitialized] drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c:1474:10: warning: missing braces around initializer [-Wmissing-braces] drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c:1474:10: warning: (near initialization for 'task_info.process_name') [-Wmissing-braces] drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c:323:10: warning: missing braces around initializer [-Wmissing-braces] drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c:323:10: warning: (near initialization for 'task_info.process_name') [-Wmissing-braces] drivers/input/joystick/analog.c:172:2: warning: #warning Precise timer not defined for this architecture. [-Wcpp] drivers/iommu/io-pgtable-arm-v7s.c:438:7: warning: 'cptep' may be used uninitialized in this function [-Wuninitialized] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:4589:9: warning: missing braces around initializer [-Wmissing-braces] drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:4589:9: warning: (near initialization for 'stream_update.src') [-Wmissing-braces] fs/nfsd/nfs4xdr.c:2076:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] fs/nfsd/nfs4xdr.c:2081:42: warning: 'end' may be used uninitialized in this function [-Wuninitialized] fs/nfs/super.c:890:1: warning: 'nfs_show_stats' uses dynamic stack allocation [enabled by default] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] drivers/net/wan/lmc/lmc_main.c:1852:9: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] drivers/net/wan/lmc/lmc_main.c:1861:9: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] drivers/net/wan/lmc/lmc_main.c:1863:5: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] drivers/net/wan/lmc/lmc_main.c:1874:9: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] drivers/net/wan/lmc/lmc_main.c:1876:5: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] drivers/net/wan/lmc/lmc_main.c:1877:5: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] drivers/net/tun.c:1846:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1756:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] drivers/net/veth.c:364:1: warning: 'veth_get_stats64' uses dynamic stack allocation [enabled by default] drivers/target/iscsi/cxgbit/cxgbit_target.c:501:1: warning: 'cxgbit_tx_datain_iso.isra.32' uses dynamic stack allocation [enabled by default] drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:102:1: warning: 'inst' may be used uninitialized in this function [-Wuninitialized] drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:102:1: warning: 'type' may be used uninitialized in this function [-Wuninitialized] drivers/soc/qcom/rpmh.c:355:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/target/iscsi/iscsi_target.c:2846:1: warning: 'iscsit_send_datain' uses dynamic stack allocation [enabled by default] drivers/media/usb/dvb-usb/pctv452e.c:922:2: warning: value computed is not used [-Wunused-value] drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c:551:41: warning: overflow in implicit constant conversion [-Woverflow] drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c:896:16: warning: 'type' may be used uninitialized in this function [-Wuninitialized] drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c:1815:15: warning: 'rc' may be used uninitialized in this function [-Wuninitialized] drivers/net/ethernet/mellanox/mlx5/core/fs_core.c:835:5: warning: 'err' may be used uninitialized in this function [-Wuninitialized] drivers/net/ethernet/mellanox/mlx5/core/events.c:238:3: warning: 'error_str' may be used uninitialized in this function [-Wuninitialized] drivers/net/ethernet/neterion/vxge/vxge-config.c:1089:1: warning: 'vxge_hw_device_hw_info_get' uses dynamic stack allocation [enabled by default] arch/s390/boot/mem_detect.c:182:1: warning: 'detect_memory' uses dynamic stack allocation [enabled by default] Full Log # git rev-parse -q --verify 30bac164aca750892b93eef350439a0562a68647^{commit} 30bac164aca750892b93eef350439a0562a68647 already have revision, skipping fetch # git checkout -q -f -B kisskb 30bac164aca750892b93eef350439a0562a68647 # git clean -qxdf # < git log -1 # commit 30bac164aca750892b93eef350439a0562a68647 # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Thu Jan 24 09:04:37 2019 +1300 # # Revert "Change mincore() to count "mapped" pages rather than "cached" pages" # # This reverts commit 574823bfab82d9d8fa47f422778043fbb4b4f50e. # # It turns out that my hope that we could just remove the code that # exposes the cache residency status from mincore() was too optimistic. # # There are various random users that want it, and one example would be # the Netflix database cluster maintenance. To quote Josh Snyder: # # "For Netflix, losing accurate information from the mincore syscall # would lengthen database cluster maintenance operations from days to # months. We rely on cross-process mincore to migrate the contents of a # page cache from machine to machine, and across reboots. # # To do this, I wrote and maintain happycache [1], a page cache # dumper/loader tool. It is quite similar in architecture to pgfincore, # except that it is agnostic to workload. The gist of happycache's # operation is "produce a dump of residence status for each page, do # some operation, then reload exactly the same pages which were present # before." happycache is entirely dependent on accurate reporting of the # in-core status of file-backed pages, as accessed by another process. # # We primarily use happycache with Cassandra, which (like Postgres + # pgfincore) relies heavily on OS page cache to reduce disk accesses. # Because our workloads never experience a cold page cache, we are able # to provision hardware for a peak utilization level that is far lower # than the hypothetical "every query is a cache miss" peak. # # A database warmed by happycache can be ready for service in seconds # (bounded only by the performance of the drives and the I/O subsystem), # with no period of in-service degradation. By contrast, putting a # database in service without a page cache entails a potentially # unbounded period of degradation (at Netflix, the time to populate a # single node's cache via natural cache misses varies by workload from # hours to weeks). If a single node upgrade were to take weeks, then # upgrading an entire cluster would take months. Since we want to apply # security upgrades (and other things) on a somewhat tighter schedule, # we would have to develop more complex solutions to provide the same # functionality already provided by mincore. # # At the bottom line, happycache is designed to benignly exploit the # same information leak documented in the paper [2]. I think it makes # perfect sense to remove cross-process mincore functionality from # unprivileged users, but not to remove it entirely" # # We do have an alternate approach that limits the cache residency # reporting only to processes that have write permissions to the file, so # we can fix the original information leak issue that way. It involves # _adding_ code rather than removing it, which is sad, but hey, at least # we haven't found any users that would find the restrictions # unacceptable. # # So revert the optimistic first approach to make room for that alternate # fix instead. # # Reported-by: Josh Snyder <joshs@netflix.com> # Cc: Jiri Kosina <jikos@kernel.org> # Cc: Dominique Martinet <asmadeus@codewreck.org> # Cc: Andy Lutomirski <luto@amacapital.net> # Cc: Dave Chinner <david@fromorbit.com> # Cc: Kevin Easton <kevin@guarana.org> # Cc: Matthew Wilcox <willy@infradead.org> # Cc: Cyril Hrubis <chrubis@suse.cz> # Cc: Vlastimil Babka <vbabka@suse.cz> # Cc: Tejun Heo <tj@kernel.org> # Cc: Kirill A. Shutemov <kirill@shutemov.name> # Cc: Daniel Gruss <daniel@gruss.cc> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-ld --version # < git log --format=%s --max-count=1 30bac164aca750892b93eef350439a0562a68647 # < make -s -j 48 ARCH=s390 O=/kisskb/build/linus_s390-allyesconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux- allyesconfig # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # yes \n \| make -s -j 48 ARCH=s390 O=/kisskb/build/linus_s390-allyesconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux- oldconfig yes: standard output: Broken pipe # make -s -j 48 ARCH=s390 O=/kisskb/build/linus_s390-allyesconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux- /kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount': /kisskb/src/kernel/cgroup/cgroup-v1.c:1263:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/events/core.c: In function 'perf_log_throttle': /kisskb/src/kernel/events/core.c:7651:1: warning: 'perf_log_throttle' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function 'perf_swevent_hrtimer': /kisskb/src/kernel/events/core.c:9163:1: warning: 'perf_swevent_hrtimer' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function 'perf_log_itrace_start': /kisskb/src/kernel/events/core.c:7692:1: warning: 'perf_log_itrace_start' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function 'perf_event_read_event': /kisskb/src/kernel/events/core.c:6581:1: warning: 'perf_event_read_event' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function 'perf_event_task_output': /kisskb/src/kernel/events/core.c:6860:1: warning: 'perf_event_task_output' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function 'perf_event_mmap_output': /kisskb/src/kernel/events/core.c:7216:1: warning: 'perf_event_mmap_output' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function 'perf_event_namespaces_output': /kisskb/src/kernel/events/core.c:7053:1: warning: 'perf_event_namespaces_output' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function 'perf_event_comm_output': /kisskb/src/kernel/events/core.c:6954:1: warning: 'perf_event_comm_output' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function 'perf_event_switch_output': /kisskb/src/kernel/events/core.c:7580:1: warning: 'perf_event_switch_output' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function 'perf_event_aux_event': /kisskb/src/kernel/events/core.c:7488:1: warning: 'perf_event_aux_event' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function 'perf_log_lost_samples': /kisskb/src/kernel/events/core.c:7521:1: warning: 'perf_log_lost_samples' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function 'perf_tp_event': /kisskb/src/kernel/events/core.c:8331:1: warning: 'perf_tp_event' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/core.c: In function '___perf_sw_event': /kisskb/src/kernel/events/core.c:8017:1: warning: '___perf_sw_event' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/ring_buffer.c: In function 'perf_output_begin_forward': /kisskb/src/kernel/events/ring_buffer.c:238:1: warning: 'perf_output_begin_forward' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/ring_buffer.c: In function 'perf_output_begin_backward': /kisskb/src/kernel/events/ring_buffer.c:244:1: warning: 'perf_output_begin_backward' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/events/ring_buffer.c: In function 'perf_output_begin': /kisskb/src/kernel/events/ring_buffer.c:252:1: warning: 'perf_output_begin' uses dynamic stack allocation [enabled by default] /kisskb/src/fs/afs/dynroot.c: In function 'afs_lookup_atcell': /kisskb/src/fs/afs/dynroot.c:126:6: warning: 'len' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/atm/ambassador.c: In function 'do_loader_command': /kisskb/src/drivers/atm/ambassador.c:1762:3: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] /kisskb/src/include/asm-generic/io.h:1074:29: note: expected 'void ' but argument is of type 'volatile struct loader_block ' /kisskb/src/kernel/smp.c: In function 'smp_call_function_single': /kisskb/src/kernel/smp.c:307:1: warning: 'smp_call_function_single' uses dynamic stack allocation [enabled by default] /kisskb/src/arch/s390/kernel/perf_cpum_sf.c: In function 'perf_push_sample': /kisskb/src/arch/s390/kernel/perf_cpum_sf.c:1075:1: warning: 'perf_push_sample' uses dynamic stack allocation [enabled by default] /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1434:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/ata/ahci_qoriq.c: In function 'ahci_qoriq_hardreset': /kisskb/src/include/asm-generic/io.h:232:15: warning: 'px_is' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/ata/ahci_qoriq.c:86:14: note: 'px_is' was declared here /kisskb/src/include/asm-generic/io.h:232:15: warning: 'px_cmd' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/ata/ahci_qoriq.c:86:6: note: 'px_cmd' was declared here /kisskb/src/mm/slub.c: In function 'deactivate_slab.isra.50': /kisskb/src/mm/slub.c:2167:1: warning: 'deactivate_slab.isra.50' uses dynamic stack allocation [enabled by default] /kisskb/src/mm/slub.c: In function 'unfreeze_partials.isra.51': /kisskb/src/mm/slub.c:2235:1: warning: 'unfreeze_partials.isra.51' uses dynamic stack allocation [enabled by default] /kisskb/src/mm/slub.c: In function 'get_partial_node.isra.52': /kisskb/src/mm/slub.c:1874:1: warning: 'get_partial_node.isra.52' uses dynamic stack allocation [enabled by default] /kisskb/src/mm/slub.c: In function '___slab_alloc': /kisskb/src/mm/slub.c:2620:1: warning: '___slab_alloc' uses dynamic stack allocation [enabled by default] /kisskb/src/mm/slub.c: In function '__slab_free': /kisskb/src/mm/slub.c:2921:1: warning: '__slab_free' uses dynamic stack allocation [enabled by default] /kisskb/src/sound/hda/hdac_regmap.c: In function 'hda_reg_write': /kisskb/src/sound/hda/hdac_regmap.c:282:16: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/rseq.c: In function 'rseq_ip_fixup': /kisskb/src/kernel/rseq.c:249:1: warning: 'rseq_ip_fixup' uses dynamic stack allocation [enabled by default] /kisskb/src/kernel/rseq.c: In function 'rseq_syscall': /kisskb/src/kernel/rseq.c:301:1: warning: 'rseq_syscall' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2594:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/trace/trace_dynevent.c: In function 'create_dyn_event': /kisskb/src/kernel/trace/trace_dynevent.c:89:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write': /kisskb/src/drivers/base/regmap/regmap.c:1855:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/bridge/netfilter/ebtables.c: In function 'compat_copy_everything_to_user': /kisskb/src/net/bridge/netfilter/ebtables.c:1908:1: warning: 'compat_copy_everything_to_user' uses dynamic stack allocation [enabled by default] /kisskb/src/net/bridge/br_device.c: In function 'br_get_stats64': /kisskb/src/net/bridge/br_device.c:232:1: warning: 'br_get_stats64' uses dynamic stack allocation [enabled by default] /kisskb/src/net/bridge/br_netlink.c: In function 'br_process_vlan_info': /kisskb/src/net/bridge/br_netlink.c:591:10: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/s390/scsi/zfcp_erp.c: In function 'zfcp_erp_setup_act': /kisskb/src/drivers/s390/scsi/zfcp_erp.c:262:2: warning: 'erp_action' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/btrfs/ref-verify.c: In function 'process_extent_item.isra.2': /kisskb/src/fs/btrfs/ref-verify.c:503:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/btrfs/ref-verify.c: In function 'process_leaf.isra.3': /kisskb/src/fs/btrfs/ref-verify.c:555:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/s390/net/ism_drv.c: In function 'query_info': /kisskb/src/drivers/s390/net/ism_drv.c:84:1: warning: 'query_info' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/s390/net/ism_drv.c: In function 'register_sba': /kisskb/src/drivers/s390/net/ism_drv.c:111:1: warning: 'register_sba' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/s390/net/ism_drv.c: In function 'register_ieq': /kisskb/src/drivers/s390/net/ism_drv.c:140:1: warning: 'register_ieq' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/s390/net/ism_drv.c: In function 'ism_query_rgid': /kisskb/src/drivers/s390/net/ism_drv.c:209:1: warning: 'ism_query_rgid' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/s390/net/ism_drv.c: In function 'ism_unregister_dmb': /kisskb/src/drivers/s390/net/ism_drv.c:296:1: warning: 'ism_unregister_dmb' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/s390/net/ism_drv.c: In function 'ism_add_vlan_id': /kisskb/src/drivers/s390/net/ism_drv.c:310:1: warning: 'ism_add_vlan_id' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/s390/net/ism_drv.c: In function 'ism_del_vlan_id': /kisskb/src/drivers/s390/net/ism_drv.c:324:1: warning: 'ism_del_vlan_id' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/s390/net/ism_drv.c: In function 'ism_signal_ieq': /kisskb/src/drivers/s390/net/ism_drv.c:352:1: warning: 'ism_signal_ieq' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/s390/net/ism_drv.c: In function 'ism_dev_init': /kisskb/src/drivers/s390/net/ism_drv.c:486:1: warning: 'ism_dev_init' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/s390/net/ism_drv.c: In function 'ism_register_dmb': /kisskb/src/drivers/s390/net/ism_drv.c:275:1: warning: 'ism_register_dmb' uses dynamic stack allocation [enabled by default] /kisskb/src/net/ncsi/ncsi-manage.c: In function 'set_one_vid': /kisskb/src/net/ncsi/ncsi-manage.c:676:19: warning: 'vid' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/arizona.c: In function 'arizona_hw_params': /kisskb/src/sound/soc/codecs/arizona.c:1893:3: warning: 'aif_rx_state' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/arizona.c:1890:3: warning: 'aif_tx_state' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/crypto/chelsio/chtls/chtls_cm.c: In function 'wait_for_states.constprop.23': /kisskb/src/drivers/crypto/chelsio/chtls/chtls_cm.c:405:1: warning: 'wait_for_states.constprop.23' uses dynamic stack allocation [enabled by default] /kisskb/src/sound/soc/codecs/da7219-aad.c: In function 'da7219_aad_hptest_work': /kisskb/src/sound/soc/codecs/da7219-aad.c:321:17: warning: 'pll_ctrl' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/f2fs/file.c: In function 'f2fs_precache_extents': /kisskb/src/fs/f2fs/file.c:2937:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c: In function 'amdgpu_set_pp_od_clk_voltage': /kisskb/src/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c:593:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/lib/test_ubsan.c: In function 'test_ubsan_out_of_bounds': /kisskb/src/lib/test_ubsan.c:67:1: warning: 'test_ubsan_out_of_bounds' uses dynamic stack allocation [enabled by default] /kisskb/src/lib/test_ubsan.c: In function 'test_ubsan_vla_bound_not_positive': /kisskb/src/lib/test_ubsan.c:51:1: warning: 'test_ubsan_vla_bound_not_positive' uses dynamic stack allocation [enabled by default] /kisskb/src/lib/test_ubsan.c: At top level: cc1: warning: unrecognized command line option "-Wno-maybe-uninitialized" [enabled by default] /kisskb/src/net/sunrpc/stats.c: In function 'rpc_clnt_show_stats': /kisskb/src/net/sunrpc/stats.c:268:1: warning: 'rpc_clnt_show_stats' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/i2c/i2c-core-base.c: In function 'i2c_generic_scl_recovery': /kisskb/src/drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/rt5665.c: In function 'rt5665_i2s_pin_event': /kisskb/src/sound/soc/codecs/rt5665.c:2666:33: warning: 'val2' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/rt5665.c:2663:33: warning: 'val1' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c: In function 'gmc_v8_0_process_interrupt': /kisskb/src/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c:1474:10: warning: missing braces around initializer [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c:1474:10: warning: (near initialization for 'task_info.process_name') [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c: In function 'gmc_v9_0_process_interrupt': /kisskb/src/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c:323:10: warning: missing braces around initializer [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c:323:10: warning: (near initialization for 'task_info.process_name') [-Wmissing-braces] /kisskb/src/drivers/input/joystick/analog.c:172:2: warning: #warning Precise timer not defined for this architecture. [-Wcpp] /kisskb/src/drivers/iommu/io-pgtable-arm-v7s.c: In function '__arm_v7s_map.constprop.7': /kisskb/src/drivers/iommu/io-pgtable-arm-v7s.c:438:7: warning: 'cptep' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c: In function 'amdgpu_dm_do_flip': /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:4589:9: warning: missing braces around initializer [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:4589:9: warning: (near initialization for 'stream_update.src') [-Wmissing-braces] /kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc': /kisskb/src/fs/nfsd/nfs4xdr.c:2076:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/nfsd/nfs4xdr.c:2081:42: warning: 'end' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/nfs/super.c: In function 'nfs_show_stats': /kisskb/src/fs/nfs/super.c:890:1: warning: 'nfs_show_stats' uses dynamic stack allocation [enabled by default] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:339:21: note: 'pdeo' was declared here /kisskb/src/drivers/net/wan/lmc/lmc_main.c: In function 'lmc_softreset': /kisskb/src/drivers/net/wan/lmc/lmc_main.c:1852:9: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] /kisskb/src/include/asm-generic/io.h:1074:29: note: expected 'void ' but argument is of type 'volatile struct tulip_desc_t ' /kisskb/src/drivers/net/wan/lmc/lmc_main.c:1861:9: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] /kisskb/src/include/asm-generic/io.h:1074:29: note: expected 'void ' but argument is of type 'volatile struct tulip_desc_t ' /kisskb/src/drivers/net/wan/lmc/lmc_main.c:1863:5: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] /kisskb/src/include/asm-generic/io.h:1074:29: note: expected 'void ' but argument is of type 'volatile struct tulip_desc_t ' /kisskb/src/drivers/net/wan/lmc/lmc_main.c:1874:9: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] /kisskb/src/include/asm-generic/io.h:1074:29: note: expected 'void ' but argument is of type 'volatile struct tulip_desc_t ' /kisskb/src/drivers/net/wan/lmc/lmc_main.c:1876:5: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] /kisskb/src/include/asm-generic/io.h:1074:29: note: expected 'void ' but argument is of type 'volatile struct tulip_desc_t ' /kisskb/src/drivers/net/wan/lmc/lmc_main.c:1877:5: warning: passing argument 1 of 'virt_to_bus' discards 'volatile' qualifier from pointer target type [enabled by default] /kisskb/src/include/asm-generic/io.h:1074:29: note: expected 'void ' but argument is of type 'volatile struct tulip_desc_t ' /kisskb/src/drivers/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1846:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1756:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/veth.c: In function 'veth_get_stats64': /kisskb/src/drivers/net/veth.c:364:1: warning: 'veth_get_stats64' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/target/iscsi/cxgbit/cxgbit_target.c: In function 'cxgbit_tx_datain_iso.isra.32': /kisskb/src/drivers/target/iscsi/cxgbit/cxgbit_target.c:501:1: warning: 'cxgbit_tx_datain_iso.isra.32' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c: In function 'gk104_top_oneinit': /kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:102:1: warning: 'inst' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:102:1: warning: 'type' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/soc/qcom/rpmh.c: In function 'rpmh_write_batch': /kisskb/src/drivers/soc/qcom/rpmh.c:355:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/target/iscsi/iscsi_target.c: In function 'iscsit_send_datain': /kisskb/src/drivers/target/iscsi/iscsi_target.c:2846:1: warning: 'iscsit_send_datain' uses dynamic stack allocation [enabled by default] /kisskb/src/drivers/media/usb/dvb-usb/pctv452e.c: In function 'pctv452e_frontend_attach': /kisskb/src/drivers/media/usb/dvb-usb/pctv452e.c:922:2: warning: value computed is not used [-Wunused-value] /kisskb/src/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c: In function 'mvpp2_setup_bm_pool': /kisskb/src/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c:551:41: warning: overflow in implicit constant conversion [-Woverflow] /kisskb/src/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c: In function 'hclgevf_bind_ring_to_vector': /kisskb/src/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c:896:16: warning: 'type' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c: In function 'rvu_mbox_handler_npc_mcam_shift_entry': /kisskb/src/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c:1815:15: warning: 'rc' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c: In function 'update_root_ft_create': /kisskb/src/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c:835:5: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/ethernet/mellanox/mlx5/core/events.c: In function 'port_module': /kisskb/src/drivers/net/ethernet/mellanox/mlx5/core/events.c:238:3: warning: 'error_str' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/ethernet/neterion/vxge/vxge-config.c: In function 'vxge_hw_device_hw_info_get': /kisskb/src/drivers/net/ethernet/neterion/vxge/vxge-config.c:1089:1: warning: 'vxge_hw_device_hw_info_get' uses dynamic stack allocation [enabled by default] /kisskb/src/arch/s390/boot/mem_detect.c: In function 'detect_memory': /kisskb/src/arch/s390/boot/mem_detect.c:182:1: warning: 'detect_memory' uses dynamic stack allocation [enabled by default] Completed OK # rm -rf /kisskb/build/linus_s390-allyesconfig_s390x # Build took: 0:09:23.023543

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