# git rev-parse -q --verify 3a83f677a6eeff65751b29e3648d7c69c3be83f3^{commit} 3a83f677a6eeff65751b29e3648d7c69c3be83f3 already have revision, skipping fetch # git checkout -q -f -B kisskb 3a83f677a6eeff65751b29e3648d7c69c3be83f3 # git clean -qxdf # < git log -1 # commit 3a83f677a6eeff65751b29e3648d7c69c3be83f3 # Author: Michael Roth # Date: Wed Sep 11 17:31:55 2019 -0500 # # KVM: PPC: Book3S HV: use smp_mb() when setting/clearing host_ipi flag # # On a 2-socket Power9 system with 32 cores/128 threads (SMT4) and 1TB # of memory running the following guest configs: # # guest A: # - 224GB of memory # - 56 VCPUs (sockets=1,cores=28,threads=2), where: # VCPUs 0-1 are pinned to CPUs 0-3, # VCPUs 2-3 are pinned to CPUs 4-7, # ... # VCPUs 54-55 are pinned to CPUs 108-111 # # guest B: # - 4GB of memory # - 4 VCPUs (sockets=1,cores=4,threads=1) # # with the following workloads (with KSM and THP enabled in all): # # guest A: # stress --cpu 40 --io 20 --vm 20 --vm-bytes 512M # # guest B: # stress --cpu 4 --io 4 --vm 4 --vm-bytes 512M # # host: # stress --cpu 4 --io 4 --vm 2 --vm-bytes 256M # # the below soft-lockup traces were observed after an hour or so and # persisted until the host was reset (this was found to be reliably # reproducible for this configuration, for kernels 4.15, 4.18, 5.0, # and 5.3-rc5): # # [ 1253.183290] rcu: INFO: rcu_sched self-detected stall on CPU # [ 1253.183319] rcu: 124-....: (5250 ticks this GP) idle=10a/1/0x4000000000000002 softirq=5408/5408 fqs=1941 # [ 1256.287426] watchdog: BUG: soft lockup - CPU#105 stuck for 23s! [CPU 52/KVM:19709] # [ 1264.075773] watchdog: BUG: soft lockup - CPU#24 stuck for 23s! [worker:19913] # [ 1264.079769] watchdog: BUG: soft lockup - CPU#31 stuck for 23s! [worker:20331] # [ 1264.095770] watchdog: BUG: soft lockup - CPU#45 stuck for 23s! [worker:20338] # [ 1264.131773] watchdog: BUG: soft lockup - CPU#64 stuck for 23s! [avocado:19525] # [ 1280.408480] watchdog: BUG: soft lockup - CPU#124 stuck for 22s! [ksmd:791] # [ 1316.198012] rcu: INFO: rcu_sched self-detected stall on CPU # [ 1316.198032] rcu: 124-....: (21003 ticks this GP) idle=10a/1/0x4000000000000002 softirq=5408/5408 fqs=8243 # [ 1340.411024] watchdog: BUG: soft lockup - CPU#124 stuck for 22s! [ksmd:791] # [ 1379.212609] rcu: INFO: rcu_sched self-detected stall on CPU # [ 1379.212629] rcu: 124-....: (36756 ticks this GP) idle=10a/1/0x4000000000000002 softirq=5408/5408 fqs=14714 # [ 1404.413615] watchdog: BUG: soft lockup - CPU#124 stuck for 22s! [ksmd:791] # [ 1442.227095] rcu: INFO: rcu_sched self-detected stall on CPU # [ 1442.227115] rcu: 124-....: (52509 ticks this GP) idle=10a/1/0x4000000000000002 softirq=5408/5408 fqs=21403 # [ 1455.111787] INFO: task worker:19907 blocked for more than 120 seconds. # [ 1455.111822] Tainted: G L 5.3.0-rc5-mdr-vanilla+ #1 # [ 1455.111833] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. # [ 1455.111884] INFO: task worker:19908 blocked for more than 120 seconds. # [ 1455.111905] Tainted: G L 5.3.0-rc5-mdr-vanilla+ #1 # [ 1455.111925] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. # [ 1455.111966] INFO: task worker:20328 blocked for more than 120 seconds. # [ 1455.111986] Tainted: G L 5.3.0-rc5-mdr-vanilla+ #1 # [ 1455.111998] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. # [ 1455.112048] INFO: task worker:20330 blocked for more than 120 seconds. # [ 1455.112068] Tainted: G L 5.3.0-rc5-mdr-vanilla+ #1 # [ 1455.112097] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. # [ 1455.112138] INFO: task worker:20332 blocked for more than 120 seconds. # [ 1455.112159] Tainted: G L 5.3.0-rc5-mdr-vanilla+ #1 # [ 1455.112179] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. # [ 1455.112210] INFO: task worker:20333 blocked for more than 120 seconds. # [ 1455.112231] Tainted: G L 5.3.0-rc5-mdr-vanilla+ #1 # [ 1455.112242] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. # [ 1455.112282] INFO: task worker:20335 blocked for more than 120 seconds. # [ 1455.112303] Tainted: G L 5.3.0-rc5-mdr-vanilla+ #1 # [ 1455.112332] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. # [ 1455.112372] INFO: task worker:20336 blocked for more than 120 seconds. # [ 1455.112392] Tainted: G L 5.3.0-rc5-mdr-vanilla+ #1 # # CPUs 45, 24, and 124 are stuck on spin locks, likely held by # CPUs 105 and 31. # # CPUs 105 and 31 are stuck in smp_call_function_many(), waiting on # target CPU 42. For instance: # # # CPU 105 registers (via xmon) # R00 = c00000000020b20c R16 = 00007d1bcd800000 # R01 = c00000363eaa7970 R17 = 0000000000000001 # R02 = c0000000019b3a00 R18 = 000000000000006b # R03 = 000000000000002a R19 = 00007d537d7aecf0 # R04 = 000000000000002a R20 = 60000000000000e0 # R05 = 000000000000002a R21 = 0801000000000080 # R06 = c0002073fb0caa08 R22 = 0000000000000d60 # R07 = c0000000019ddd78 R23 = 0000000000000001 # R08 = 000000000000002a R24 = c00000000147a700 # R09 = 0000000000000001 R25 = c0002073fb0ca908 # R10 = c000008ffeb4e660 R26 = 0000000000000000 # R11 = c0002073fb0ca900 R27 = c0000000019e2464 # R12 = c000000000050790 R28 = c0000000000812b0 # R13 = c000207fff623e00 R29 = c0002073fb0ca808 # R14 = 00007d1bbee00000 R30 = c0002073fb0ca800 # R15 = 00007d1bcd600000 R31 = 0000000000000800 # pc = c00000000020b260 smp_call_function_many+0x3d0/0x460 # cfar= c00000000020b270 smp_call_function_many+0x3e0/0x460 # lr = c00000000020b20c smp_call_function_many+0x37c/0x460 # msr = 900000010288b033 cr = 44024824 # ctr = c000000000050790 xer = 0000000000000000 trap = 100 # # CPU 42 is running normally, doing VCPU work: # # # CPU 42 stack trace (via xmon) # [link register ] c00800001be17188 kvmppc_book3s_radix_page_fault+0x90/0x2b0 [kvm_hv] # [c000008ed3343820] c000008ed3343850 (unreliable) # [c000008ed33438d0] c00800001be11b6c kvmppc_book3s_hv_page_fault+0x264/0xe30 [kvm_hv] # [c000008ed33439d0] c00800001be0d7b4 kvmppc_vcpu_run_hv+0x8dc/0xb50 [kvm_hv] # [c000008ed3343ae0] c00800001c10891c kvmppc_vcpu_run+0x34/0x48 [kvm] # [c000008ed3343b00] c00800001c10475c kvm_arch_vcpu_ioctl_run+0x244/0x420 [kvm] # [c000008ed3343b90] c00800001c0f5a78 kvm_vcpu_ioctl+0x470/0x7c8 [kvm] # [c000008ed3343d00] c000000000475450 do_vfs_ioctl+0xe0/0xc70 # [c000008ed3343db0] c0000000004760e4 ksys_ioctl+0x104/0x120 # [c000008ed3343e00] c000000000476128 sys_ioctl+0x28/0x80 # [c000008ed3343e20] c00000000000b388 system_call+0x5c/0x70 # --- Exception: c00 (System Call) at 00007d545cfd7694 # SP (7d53ff7edf50) is in userspace # # It was subsequently found that ipi_message[PPC_MSG_CALL_FUNCTION] # was set for CPU 42 by at least 1 of the CPUs waiting in # smp_call_function_many(), but somehow the corresponding # call_single_queue entries were never processed by CPU 42, causing the # callers to spin in csd_lock_wait() indefinitely. # # Nick Piggin suggested something similar to the following sequence as # a possible explanation (interleaving of CALL_FUNCTION/RESCHEDULE # IPI messages seems to be most common, but any mix of CALL_FUNCTION and # !CALL_FUNCTION messages could trigger it): # # CPU # X: smp_muxed_ipi_set_message(): # X: smp_mb() # X: message[RESCHEDULE] = 1 # X: doorbell_global_ipi(42): # X: kvmppc_set_host_ipi(42, 1) # X: ppc_msgsnd_sync()/smp_mb() # X: ppc_msgsnd() -> 42 # 42: doorbell_exception(): // from CPU X # 42: ppc_msgsync() # 105: smp_muxed_ipi_set_message(): # 105: smb_mb() # // STORE DEFERRED DUE TO RE-ORDERING # --105: message[CALL_FUNCTION] = 1 # | 105: doorbell_global_ipi(42): # | 105: kvmppc_set_host_ipi(42, 1) # | 42: kvmppc_set_host_ipi(42, 0) # | 42: smp_ipi_demux_relaxed() # | 42: // returns to executing guest # | // RE-ORDERED STORE COMPLETES # ->105: message[CALL_FUNCTION] = 1 # 105: ppc_msgsnd_sync()/smp_mb() # 105: ppc_msgsnd() -> 42 # 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored # 105: // hangs waiting on 42 to process messages/call_single_queue # # This can be prevented with an smp_mb() at the beginning of # kvmppc_set_host_ipi(), such that stores to message[] (or other # state indicated by the host_ipi flag) are ordered vs. the store to # to host_ipi. # # However, doing so might still allow for the following scenario (not # yet observed): # # CPU # X: smp_muxed_ipi_set_message(): # X: smp_mb() # X: message[RESCHEDULE] = 1 # X: doorbell_global_ipi(42): # X: kvmppc_set_host_ipi(42, 1) # X: ppc_msgsnd_sync()/smp_mb() # X: ppc_msgsnd() -> 42 # 42: doorbell_exception(): // from CPU X # 42: ppc_msgsync() # // STORE DEFERRED DUE TO RE-ORDERING # -- 42: kvmppc_set_host_ipi(42, 0) # | 42: smp_ipi_demux_relaxed() # | 105: smp_muxed_ipi_set_message(): # | 105: smb_mb() # | 105: message[CALL_FUNCTION] = 1 # | 105: doorbell_global_ipi(42): # | 105: kvmppc_set_host_ipi(42, 1) # | // RE-ORDERED STORE COMPLETES # -> 42: kvmppc_set_host_ipi(42, 0) # 42: // returns to executing guest # 105: ppc_msgsnd_sync()/smp_mb() # 105: ppc_msgsnd() -> 42 # 42: local_paca->kvm_hstate.host_ipi == 0 // IPI ignored # 105: // hangs waiting on 42 to process messages/call_single_queue # # Fixing this scenario would require an smp_mb() *after* clearing # host_ipi flag in kvmppc_set_host_ipi() to order the store vs. # subsequent processing of IPI messages. # # To handle both cases, this patch splits kvmppc_set_host_ipi() into # separate set/clear functions, where we execute smp_mb() prior to # setting host_ipi flag, and after clearing host_ipi flag. These # functions pair with each other to synchronize the sender and receiver # sides. # # With that change in place the above workload ran for 20 hours without # triggering any lock-ups. # # Fixes: 755563bc79c7 ("powerpc/powernv: Fixes for hypervisor doorbell handling") # v4.0 # Signed-off-by: Michael Roth # Acked-by: Paul Mackerras # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20190911223155.16045-1-mdroth@linux.vnet.ibm.com # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version # < git log --format=%s --max-count=1 3a83f677a6eeff65751b29e3648d7c69c3be83f3 # < make -s -j 8 ARCH=powerpc O=/kisskb/build/powerpc-fixes_powerpc-allmodconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- allmodconfig # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_SAMPLES=n # yes \n | make -s -j 8 ARCH=powerpc O=/kisskb/build/powerpc-fixes_powerpc-allmodconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- oldconfig yes: standard output: Broken pipe # make -s -j 8 ARCH=powerpc O=/kisskb/build/powerpc-fixes_powerpc-allmodconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/arch/powerpc/boot/dts/fsl/p2020rdb.dts:251.22-254.4: Warning (pci_bridge): /pcie@ffe08000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/p2020si-post.dtsi:43.7-68.3 /kisskb/src/arch/powerpc/boot/dts/fsl/p2020si-post.dtsi:52.9-67.4: Warning (pci_bridge): /pcie@ffe08000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/p2020rdb.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/virtex440-ml510.dts:335.37-439.6: Warning (pci_bridge): /plb@0/plbv46-pci@85e00000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/virtex440-ml510.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/fsl/mvme7100.dts:135.22-137.4: Warning (pci_bridge): /pcie@f1008000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:92.7-117.3 /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:102.9-116.4: Warning (pci_bridge): /pcie@f1008000/pcie@0: missing ranges for PCI bridge (or not a bridge) /kisskb/src/arch/powerpc/boot/dts/fsl/mvme7100.dts:139.22-141.4: Warning (pci_bridge): /pcie@f1009000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:119.7-144.3 /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:129.9-143.4: Warning (pci_bridge): /pcie@f1009000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/mvme7100.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/fsl/mvme7100.dts:30.11-32.6: Warning (i2c_bus_reg): /soc@f1000000/i2c@3000/rtc@68: missing or empty reg property /kisskb/src/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi:38.2-25: Warning (interrupts_property): /soc@fffe00000/mdio@24000/ethernet-phy@0:#interrupt-cells: size is (8), expected multiple of 16 /kisskb/src/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi:38.2-25: Warning (interrupts_property): /soc@fffe00000/mdio@24000/ethernet-phy@1:#interrupt-cells: size is (8), expected multiple of 16 /kisskb/src/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi:38.2-25: Warning (interrupts_property): /soc@ffe00000/mdio@24000/ethernet-phy@0:#interrupt-cells: size is (8), expected multiple of 16 /kisskb/src/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi:38.2-25: Warning (interrupts_property): /soc@ffe00000/mdio@24000/ethernet-phy@1:#interrupt-cells: size is (8), expected multiple of 16 /kisskb/src/arch/powerpc/boot/dts/icon.dts:318.26-357.5: Warning (pci_bridge): /plb/pciex@d00000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/icon.dts:359.26-398.5: Warning (pci_bridge): /plb/pciex@d20000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/icon.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/fsl/p1020rdb-pd.dts:189.11-193.6: Warning (spi_bus_reg): /soc@ffe00000/spi@7000/slic@0: SPI bus unit address format error, expected "1" /kisskb/src/arch/powerpc/boot/dts/fsl/p1020rdb-pd.dts:195.11-199.6: Warning (spi_bus_reg): /soc@ffe00000/spi@7000/slic@1: SPI bus unit address format error, expected "2" /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8555cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi:38.2-25: Warning (interrupts_property): /soc@fffe00000/mdio@24000/ethernet-phy@0:#interrupt-cells: size is (8), expected multiple of 16 /kisskb/src/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi:38.2-25: Warning (interrupts_property): /soc@fffe00000/mdio@24000/ethernet-phy@1:#interrupt-cells: size is (8), expected multiple of 16 /kisskb/src/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi:38.2-25: Warning (interrupts_property): /soc@ffe00000/mdio@24000/ethernet-phy@0:#interrupt-cells: size is (8), expected multiple of 16 /kisskb/src/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi:38.2-25: Warning (interrupts_property): /soc@ffe00000/mdio@24000/ethernet-phy@1:#interrupt-cells: size is (8), expected multiple of 16 /kisskb/src/arch/powerpc/boot/dts/fsl/gef_sbc610.dts:209.22-211.4: Warning (pci_bridge): /pcie@fef09000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:119.7-144.3 /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:129.9-143.4: Warning (pci_bridge): /pcie@fef09000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/gef_sbc610.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/fsl/kmcoge4.dts:196.23-198.4: Warning (pci_bridge): /pcie@ffe201000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi:87.7-113.3 /kisskb/src/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi:97.9-112.4: Warning (pci_bridge): /pcie@ffe201000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/kmcoge4.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/bluestone.dts:328.26-368.5: Warning (pci_bridge): /plb/pciex@d00000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/bluestone.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/bluestone.dts:272.13-277.7: Warning (i2c_bus_reg): /plb/opb/i2c@ef600700/sttm@4C: I2C bus unit address format error, expected "4c" /kisskb/src/arch/powerpc/boot/dts/fsl/gef_ppc9a.dts:211.22-213.4: Warning (pci_bridge): /pcie@fef09000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:119.7-144.3 /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:129.9-143.4: Warning (pci_bridge): /pcie@fef09000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/gef_ppc9a.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/makalu.dts:271.25-310.5: Warning (pci_bridge): /plb/pciex@a0000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/makalu.dts:312.25-351.5: Warning (pci_bridge): /plb/pciex@c0000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/makalu.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/fsl/oca4080.dts:132.23-134.4: Warning (pci_bridge): /pcie@ffe200000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/p4080si-post.dtsi:58.7-84.3 /kisskb/src/arch/powerpc/boot/dts/fsl/p4080si-post.dtsi:68.9-83.4: Warning (pci_bridge): /pcie@ffe200000/pcie@0: missing ranges for PCI bridge (or not a bridge) /kisskb/src/arch/powerpc/boot/dts/fsl/oca4080.dts:136.23-138.4: Warning (pci_bridge): /pcie@ffe201000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/p4080si-post.dtsi:87.7-113.3 /kisskb/src/arch/powerpc/boot/dts/fsl/p4080si-post.dtsi:97.9-112.4: Warning (pci_bridge): /pcie@ffe201000/pcie@0: missing ranges for PCI bridge (or not a bridge) /kisskb/src/arch/powerpc/boot/dts/fsl/oca4080.dts:140.23-142.4: Warning (pci_bridge): /pcie@ffe202000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/p4080si-post.dtsi:116.7-142.3 /kisskb/src/arch/powerpc/boot/dts/fsl/p4080si-post.dtsi:126.9-141.4: Warning (pci_bridge): /pcie@ffe202000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/oca4080.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/fsl/ppa8548.dts:34.22-37.4: Warning (pci_bridge): /pci@fe0008000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8548si-post.dtsi:43.7-51.3 /kisskb/src/arch/powerpc/boot/dts/fsl/ppa8548.dts:39.22-42.4: Warning (pci_bridge): /pci@fe0009000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8548si-post.dtsi:54.7-62.3 /kisskb/src/arch/powerpc/boot/dts/fsl/ppa8548.dts:44.23-47.4: Warning (pci_bridge): /pcie@fe000a000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8548si-post.dtsi:65.7-90.3 /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8548si-post.dtsi:74.9-89.4: Warning (pci_bridge): /pcie@fe000a000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/ppa8548.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/fsl/p2020rdb-pc_36b.dts:59.23-62.4: Warning (pci_bridge): /pcie@fffe08000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/p2020si-post.dtsi:100.7-126.3 /kisskb/src/arch/powerpc/boot/dts/fsl/p2020si-post.dtsi:109.9-125.4: Warning (pci_bridge): /pcie@fffe08000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/p2020rdb-pc_36b.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/fsl/p2020rdb-pc_32b.dts:59.22-62.4: Warning (pci_bridge): /pcie@ffe08000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/p2020si-post.dtsi:100.7-126.3 /kisskb/src/arch/powerpc/boot/dts/fsl/p2020si-post.dtsi:109.9-125.4: Warning (pci_bridge): /pcie@ffe08000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/p2020rdb-pc_32b.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8541cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/fsl/kmcent2.dts:259.23-261.4: Warning (pci_bridge): /pcie@ffe250000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi:85.7-109.3 /kisskb/src/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi:93.9-108.4: Warning (pci_bridge): /pcie@ffe250000/pcie@0: missing ranges for PCI bridge (or not a bridge) /kisskb/src/arch/powerpc/boot/dts/fsl/kmcent2.dts:263.23-265.4: Warning (pci_bridge): /pcie@ffe260000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi:111.7-135.3 /kisskb/src/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi:119.9-134.4: Warning (pci_bridge): /pcie@ffe260000/pcie@0: missing ranges for PCI bridge (or not a bridge) /kisskb/src/arch/powerpc/boot/dts/fsl/kmcent2.dts:267.23-269.4: Warning (pci_bridge): /pcie@ffe270000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi:137.7-161.3 /kisskb/src/arch/powerpc/boot/dts/fsl/t1040si-post.dtsi:145.9-160.4: Warning (pci_bridge): /pcie@ffe270000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/kmcent2.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mgcoge.dts:230.14-234.7: Warning (spi_bus_reg): /soc@f0000000/cpm@119c0/spi@11aa0/ds3106@1: SPI bus unit address format error, expected "0" /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:267.20-280.4: Warning (pci_bridge): /pci@f0000d00: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/motionpro.dts:84.15-86.4 arch/powerpc/boot/dts/motionpro.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:267.20-280.4: Warning (pci_bridge): /pci@f0000d00: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/uc101.dts:100.15-102.4 arch/powerpc/boot/dts/uc101.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:267.20-280.4: Warning (pci_bridge): /pci@f0000d00: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/a3m071.dts:135.15-137.4 arch/powerpc/boot/dts/a3m071.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5121.dtsi:397.13-406.5: Warning (spi_bus_bridge): /soc@80000000/psc@11400: node name for SPI buses should be 'spi' also defined at /kisskb/src/arch/powerpc/boot/dts/ac14xx.dts:305.19-326.5 /kisskb/src/arch/powerpc/boot/dts/mpc5121.dtsi:409.13-418.5: Warning (spi_bus_bridge): /soc@80000000/psc@11500: node name for SPI buses should be 'spi' also defined at /kisskb/src/arch/powerpc/boot/dts/ac14xx.dts:329.19-344.5 arch/powerpc/boot/dts/ac14xx.dtb: Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:267.20-280.4: Warning (pci_bridge): /pci@f0000d00: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/o2d.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:182.18-186.5: Warning (spi_bus_bridge): /soc5200@f0000000/psc@2000: node name for SPI buses should be 'spi' also defined at /kisskb/src/arch/powerpc/boot/dts/o2d.dtsi:32.12-43.5 arch/powerpc/boot/dts/o2d.dtb: Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:267.20-280.4: Warning (pci_bridge): /pci@f0000d00: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/cm5200.dts:70.15-72.4 arch/powerpc/boot/dts/cm5200.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/haleakala.dts:240.25-279.5: Warning (pci_bridge): /plb/pciex@a0000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/haleakala.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/katmai.dts:322.26-361.5: Warning (pci_bridge): /plb/pciex@d00000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/katmai.dts:363.26-402.5: Warning (pci_bridge): /plb/pciex@d20000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/katmai.dts:404.26-443.5: Warning (pci_bridge): /plb/pciex@d40000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/katmai.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:267.20-280.4: Warning (pci_bridge): /pci@f0000d00: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/o2i.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:182.18-186.5: Warning (spi_bus_bridge): /soc5200@f0000000/psc@2000: node name for SPI buses should be 'spi' also defined at /kisskb/src/arch/powerpc/boot/dts/o2d.dtsi:32.12-43.5 arch/powerpc/boot/dts/o2i.dtb: Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge' /kisskb/src/arch/powerpc/boot/dts/currituck.dts:125.28-161.5: Warning (pci_bridge): /plb/pciex@10100000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/currituck.dts:163.28-198.5: Warning (pci_bridge): /plb/pciex@30100000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/currituck.dts:200.28-235.5: Warning (pci_bridge): /plb/pciex@38100000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/currituck.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/stxssa8555.dts:329.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/akebono.dts:251.28-289.5: Warning (pci_bridge): /plb/pciex@10100000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/akebono.dts:291.28-329.5: Warning (pci_bridge): /plb/pciex@20100000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/akebono.dts:331.28-369.5: Warning (pci_bridge): /plb/pciex@18100000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/akebono.dts:371.28-409.5: Warning (pci_bridge): /plb/pciex@28100000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/akebono.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc8610_hpcd.dts:420.3-21: Warning (pci_device_bus_num): /pcie@e000a000/pcie@0:bus-range: PCI bus number 0 out of range, expected (1 - 1) /kisskb/src/arch/powerpc/boot/dts/canyonlands.dts:464.26-504.5: Warning (pci_bridge): /plb/pciex@d00000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/canyonlands.dts:506.26-546.5: Warning (pci_bridge): /plb/pciex@d20000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/canyonlands.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:267.20-280.4: Warning (pci_bridge): /pci@f0000d00: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/o2mnt.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:182.18-186.5: Warning (spi_bus_bridge): /soc5200@f0000000/psc@2000: node name for SPI buses should be 'spi' also defined at /kisskb/src/arch/powerpc/boot/dts/o2d.dtsi:32.12-43.5 arch/powerpc/boot/dts/o2mnt.dtb: Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge' /kisskb/src/arch/powerpc/boot/dts/glacier.dts:492.26-532.5: Warning (pci_bridge): /plb/pciex@d00000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/glacier.dts:534.26-574.5: Warning (pci_bridge): /plb/pciex@d20000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/glacier.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:267.20-280.4: Warning (pci_bridge): /pci@f0000d00: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/o2dnt2.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:182.18-186.5: Warning (spi_bus_bridge): /soc5200@f0000000/psc@2000: node name for SPI buses should be 'spi' also defined at /kisskb/src/arch/powerpc/boot/dts/o2d.dtsi:32.12-43.5 arch/powerpc/boot/dts/o2dnt2.dtb: Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:267.20-280.4: Warning (pci_bridge): /pci@f0000d00: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/o3dnt.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:182.18-186.5: Warning (spi_bus_bridge): /soc5200@f0000000/psc@2000: node name for SPI buses should be 'spi' also defined at /kisskb/src/arch/powerpc/boot/dts/o2d.dtsi:32.12-43.5 arch/powerpc/boot/dts/o3dnt.dtb: Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge' /kisskb/src/arch/powerpc/boot/dts/redwood.dts:238.26-277.5: Warning (pci_bridge): /plb/pciex@d00000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/redwood.dts:279.26-318.5: Warning (pci_bridge): /plb/pciex@d20000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/redwood.dts:320.26-359.5: Warning (pci_bridge): /plb/pciex@d40000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/redwood.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/xpedite5200_xmon.dts:139.11-142.6: Warning (i2c_bus_reg): /soc@ef000000/i2c@3000/dtt@48: I2C bus unit address format error, expected "34" /kisskb/src/arch/powerpc/boot/dts/kilauea.dts:325.25-364.5: Warning (pci_bridge): /plb/pciex@a0000000: node name is not "pci" or "pcie" /kisskb/src/arch/powerpc/boot/dts/kilauea.dts:366.25-405.5: Warning (pci_bridge): /plb/pciex@c0000000: node name is not "pci" or "pcie" arch/powerpc/boot/dts/kilauea.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:267.20-280.4: Warning (pci_bridge): /pci@f0000d00: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/o2d300.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5200b.dtsi:182.18-186.5: Warning (spi_bus_bridge): /soc5200@f0000000/psc@2000: node name for SPI buses should be 'spi' also defined at /kisskb/src/arch/powerpc/boot/dts/o2d.dtsi:32.12-43.5 arch/powerpc/boot/dts/o2d300.dtb: Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge' /kisskb/src/arch/powerpc/boot/dts/mpc5121.dtsi:457.13-466.5: Warning (spi_bus_bridge): /soc@80000000/psc@11900: node name for SPI buses should be 'spi' also defined at /kisskb/src/arch/powerpc/boot/dts/pdm360ng.dts:172.13-185.5 arch/powerpc/boot/dts/pdm360ng.dtb: Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge' /kisskb/src/arch/powerpc/boot/dts/xpedite5200.dts:135.11-138.6: Warning (i2c_bus_reg): /soc@ef000000/i2c@3000/dtt@48: I2C bus unit address format error, expected "34" /kisskb/src/fs/afs/dynroot.c: In function 'afs_lookup_atcell': /kisskb/src/fs/afs/dynroot.c:124:6: warning: 'len' 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:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/sched/core.c: In function 'try_to_wake_up': /kisskb/src/kernel/sched/core.c:2648:12: warning: 'cpu' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1465:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/android/binderfs.c: In function 'binderfs_fill_super': /kisskb/src/drivers/android/binderfs.c:657:9: warning: missing braces around initializer [-Wmissing-braces] /kisskb/src/drivers/android/binderfs.c:657:9: warning: (near initialization for 'device_info.name') [-Wmissing-braces] /kisskb/src/drivers/ata/ahci_qoriq.c: In function 'ahci_qoriq_hardreset': /kisskb/src/arch/powerpc/include/asm/io-defs.h:12:1: warning: 'px_is' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/ata/ahci_qoriq.c:88:14: note: 'px_is' was declared here /kisskb/src/arch/powerpc/include/asm/io-defs.h:12:1: warning: 'px_cmd' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/ata/ahci_qoriq.c:88:6: note: 'px_cmd' was declared here /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2591:6: 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:1852:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/btrfs/ref-verify.c: In function 'process_extent_item.isra.0': /kisskb/src/fs/btrfs/ref-verify.c:492:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/btrfs/ref-verify.c: In function 'process_leaf': /kisskb/src/fs/btrfs/ref-verify.c:545:2: warning: 'ret' 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:3067:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/hda/hdac_regmap.c: In function 'hda_reg_write': /kisskb/src/sound/hda/hdac_regmap.c:284:16: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/f2fs/node.c: In function '__set_nat_cache_dirty': /kisskb/src/include/linux/list.h:93:12: warning: 'head' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/f2fs/node.c:236:24: note: 'head' was declared here /kisskb/src/net/bridge/br_netlink.c: In function 'br_process_vlan_info': /kisskb/src/net/bridge/br_netlink.c:587:10: warning: 'err' 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:1890:3: warning: 'aif_rx_state' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/arizona.c:1887:3: warning: 'aif_tx_state' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/core/devlink.c: In function 'devlink_fmsg_prepare_skb': /kisskb/src/net/core/devlink.c:4484:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc': /kisskb/src/fs/nfsd/nfs4xdr.c:2065:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/da7219-aad.c: In function 'da7219_aad_hptest_work': /kisskb/src/sound/soc/codecs/da7219-aad.c:317:17: warning: 'pll_ctrl' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/ocfs2/alloc.c: In function 'ocfs2_trim_mainbm': /kisskb/src/fs/ocfs2/alloc.c:7590:17: warning: 'first_bit' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/fsl/imx-audmix.c: In function 'imx_audmix_probe': /kisskb/src/sound/soc/fsl/imx-audmix.c:302:45: warning: 'capture_dai_name' 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:2663:33: warning: 'val2' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/rt5665.c:2660:33: warning: 'val1' may be used uninitialized in this function [-Wuninitialized] /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:338:21: note: 'pdeo' was declared here /kisskb/src/sound/soc/soc-pcm.c: In function 'soc_pcm_trigger': /kisskb/src/sound/soc/soc-pcm.c:1074:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/soc-pcm.c: In function 'soc_pcm_bespoke_trigger': /kisskb/src/sound/soc/soc-pcm.c:1092:9: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_handle_pwr_constr.isra.18': /kisskb/src/net/mac80211/mlme.c:1576:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/ncsi/ncsi-manage.c: In function 'set_one_vid': /kisskb/src/net/ncsi/ncsi-manage.c:672:19: warning: 'vid' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c: In function 'sh_mobile_i2c_isr_rx': /kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:399:26: warning: 'data' may be used uninitialized in this function [-Wuninitialized] /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:104:1: warning: 'inst' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:104:1: warning: 'type' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/iio/imu/bmi160/bmi160_core.c: In function 'bmi160_config_pin.constprop.7': /kisskb/src/drivers/iio/imu/bmi160/bmi160_core.c:618:3: warning: 'pin_name' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/iio/imu/bmi160/bmi160_core.c:606:29: warning: 'int_map_mask' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/iio/imu/bmi160/bmi160_core.c:599:29: warning: 'int_latch_mask' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/iio/imu/bmi160/bmi160_core.c:577:47: warning: 'int_out_ctrl_shift' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/infiniband/sw/siw/siw_qp_rx.c: In function 'siw_rqe_get': /kisskb/src/include/linux/spinlock.h:393:2: warning: 'flags' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/infiniband/sw/siw/siw_qp_rx.c:335:16: note: 'flags' was declared here /kisskb/src/drivers/iommu/io-pgtable-arm-v7s.c: In function '__arm_v7s_map.constprop.8': /kisskb/src/drivers/iommu/io-pgtable-arm-v7s.c:482:7: warning: 'cptep' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/soundwire/slave.c:16:12: warning: 'sdw_slave_add' defined but not used [-Wunused-function] /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/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/tty/serial/8250/8250_core.c: In function 'serial_unlink_irq_chain': /kisskb/src/drivers/tty/serial/8250/8250_core.c:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c: In function 'ibmvscsis_rdma': /kisskb/src/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:3312:18: warning: 'server_ioba' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:3306:18: warning: 'client_ioba' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/usb/usbip/stub_rx.c: In function 'stub_recv_cmd_submit': /kisskb/src/drivers/usb/usbip/stub_rx.c:573:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/wireless/broadcom/b43/phy_n.c: In function 'b43_nphy_rf_ctl_override_rev7': /kisskb/src/drivers/net/wireless/broadcom/b43/phy_n.c:190:21: warning: 'val_addr' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1836:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1749:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c: In function 'rtl8723a_phy_lc_calibrate': /kisskb/src/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c:3477:23: warning: 'rf_amode' may be used uninitialized in this function [-Wuninitialized] WARNING: vmlinux.o(.text.unlikely+0x114): Section mismatch in reference from the function .setup_secure_guest() to the function .init.text:.prom_printf() The function .setup_secure_guest() references the function __init .prom_printf(). This is often because .setup_secure_guest lacks a __init annotation or the annotation of .prom_printf is wrong. WARNING: vmlinux.o(.text.unlikely+0x13c): Section mismatch in reference from the function .setup_secure_guest() to the function .init.text:.prom_printf() The function .setup_secure_guest() references the function __init .prom_printf(). This is often because .setup_secure_guest lacks a __init annotation or the annotation of .prom_printf is wrong. WARNING: vmlinux.o(.text.unlikely+0x15c): Section mismatch in reference from the function .setup_secure_guest() to the function .init.text:.call_prom() The function .setup_secure_guest() references the function __init .call_prom(). This is often because .setup_secure_guest lacks a __init annotation or the annotation of .call_prom is wrong. WARNING: vmlinux.o(.text.unlikely+0x18c): Section mismatch in reference from the function .setup_secure_guest() to the function .init.text:.prom_getprop() The function .setup_secure_guest() references the function __init .prom_getprop(). This is often because .setup_secure_guest lacks a __init annotation or the annotation of .prom_getprop is wrong. WARNING: vmlinux.o(.text.unlikely+0x1a4): Section mismatch in reference from the function .setup_secure_guest() to the function .init.text:.prom_panic() The function .setup_secure_guest() references the function __init .prom_panic(). This is often because .setup_secure_guest lacks a __init annotation or the annotation of .prom_panic is wrong. WARNING: vmlinux.o(.text.unlikely+0x758): Section mismatch in reference from the function .smp_setup_pacas() to the function .init.text:.allocate_paca() The function .smp_setup_pacas() references the function __init .allocate_paca(). This is often because .smp_setup_pacas lacks a __init annotation or the annotation of .allocate_paca is wrong. WARNING: vmlinux.o(.text.unlikely+0x2ac8): Section mismatch in reference from the function .remove_pmd_table() to the function .meminit.text:.split_kernel_mapping() The function .remove_pmd_table() references the function __meminit .split_kernel_mapping(). This is often because .remove_pmd_table lacks a __meminit annotation or the annotation of .split_kernel_mapping is wrong. WARNING: vmlinux.o(.text.unlikely+0x2cd0): Section mismatch in reference from the function .remove_pud_table() to the function .meminit.text:.split_kernel_mapping() The function .remove_pud_table() references the function __meminit .split_kernel_mapping(). This is often because .remove_pud_table lacks a __meminit annotation or the annotation of .split_kernel_mapping is wrong. WARNING: vmlinux.o(.text.unlikely+0x3ccc): Section mismatch in reference from the function .xive_spapr_disabled() to the function .init.text:.of_get_flat_dt_root() The function .xive_spapr_disabled() references the function __init .of_get_flat_dt_root(). This is often because .xive_spapr_disabled lacks a __init annotation or the annotation of .of_get_flat_dt_root is wrong. WARNING: vmlinux.o(.text.unlikely+0x3cdc): Section mismatch in reference from the function .xive_spapr_disabled() to the function .init.text:.of_get_flat_dt_subnode_by_name() The function .xive_spapr_disabled() references the function __init .of_get_flat_dt_subnode_by_name(). This is often because .xive_spapr_disabled lacks a __init annotation or the annotation of .of_get_flat_dt_subnode_by_name is wrong. WARNING: vmlinux.o(.text.unlikely+0x3cf8): Section mismatch in reference from the function .xive_spapr_disabled() to the function .init.text:.of_get_flat_dt_prop() The function .xive_spapr_disabled() references the function __init .of_get_flat_dt_prop(). This is often because .xive_spapr_disabled lacks a __init annotation or the annotation of .of_get_flat_dt_prop is wrong. /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld: drivers/misc/lkdtm/lkdtm.o: .opd is not a regular array of opd entries Completed OK # rm -rf /kisskb/build/powerpc-fixes_powerpc-allmodconfig_powerpc-gcc4.6 # Build took: 0:22:38.639402