Buildresult: powerpc-fixes/s390-defconfig/s390x-gcc4.6 built on Feb 19 2019, 11:53

kisskb

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Status:	OK
Date/Time:	Feb 19 2019, 11:53
Duration:	0:02:46.228599
Builder:	ka1
Revision:	powerpc/powernv/sriov: Register IOMMU groups for VFs (`8f5b27347e88b171c755562f0090ce40e514fc00)`
Target:	powerpc-fixes/s390-defconfig/s390x-gcc4.6
Branch:	powerpc-fixes
Compiler:	s390x-gcc4.6 (s390x-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	defconfig (download)
Log:	Download original Possible warnings (8) 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] mm/hugetlb.c:1434:5: warning: 'page' 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] include/linux/list.h:65:12: warning: 'pdeo' 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] drivers/net/tun.c:1843:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1753:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 8f5b27347e88b171c755562f0090ce40e514fc00^{commit} 8f5b27347e88b171c755562f0090ce40e514fc00 already have revision, skipping fetch # git checkout -q -f -B kisskb 8f5b27347e88b171c755562f0090ce40e514fc00 # git clean -qxdf # < git log -1 # commit 8f5b27347e88b171c755562f0090ce40e514fc00 # Author: Alexey Kardashevskiy <aik@ozlabs.ru> # Date: Mon Feb 18 16:58:01 2019 +1100 # # powerpc/powernv/sriov: Register IOMMU groups for VFs # # The compound IOMMU group rework moved iommu_register_group() together # in pnv_pci_ioda_setup_iommu_api() (which is a part of # ppc_md.pcibios_fixup). As the result, pnv_ioda_setup_bus_iommu_group() # does not create groups any more, it only adds devices to groups. # # This works fine for boot time devices. However IOMMU groups for # SRIOV's VFs were added by pnv_ioda_setup_bus_iommu_group() so this got # broken: pnv_tce_iommu_bus_notifier() expects a group to be registered # for VF and it is not. # # This adds missing group registration and adds a NULL pointer check # into the bus notifier so we won't crash if there is no group, although # it is not expected to happen now because of the change above. # # Example oops seen prior to this patch: # # $ echo 1 > /sys/bus/pci/devices/0000\:01\:00.0/sriov_numvfs # Unable to handle kernel paging request for data at address 0x00000030 # Faulting instruction address: 0xc0000000004a6018 # Oops: Kernel access of bad area, sig: 11 [#1] # LE SMP NR_CPUS=2048 NUMA PowerNV # CPU: 46 PID: 7006 Comm: bash Not tainted 4.15-ish # NIP: c0000000004a6018 LR: c0000000004a6014 CTR: 0000000000000000 # REGS: c000008fc876b400 TRAP: 0300 Not tainted (4.15-ish) # MSR: 900000000280b033 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> # CFAR: c000000000d0be20 DAR: 0000000000000030 DSISR: 40000000 SOFTE: 1 # ... # NIP sysfs_do_create_link_sd.isra.0+0x68/0x150 # LR sysfs_do_create_link_sd.isra.0+0x64/0x150 # Call Trace: # pci_dev_type+0x0/0x30 (unreliable) # iommu_group_add_device+0x8c/0x600 # iommu_add_device+0xe8/0x180 # pnv_tce_iommu_bus_notifier+0xb0/0xf0 # notifier_call_chain+0x9c/0x110 # blocking_notifier_call_chain+0x64/0xa0 # device_add+0x524/0x7d0 # pci_device_add+0x248/0x450 # pci_iov_add_virtfn+0x294/0x3e0 # pci_enable_sriov+0x43c/0x580 # mlx5_core_sriov_configure+0x15c/0x2f0 [mlx5_core] # sriov_numvfs_store+0x180/0x240 # dev_attr_store+0x3c/0x60 # sysfs_kf_write+0x64/0x90 # kernfs_fop_write+0x1ac/0x240 # __vfs_write+0x3c/0x70 # vfs_write+0xd8/0x220 # SyS_write+0x6c/0x110 # system_call+0x58/0x6c # # Fixes: 0bd971676e68 ("powerpc/powernv/npu: Add compound IOMMU groups") # Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> # Reported-by: Santwana Samantray <santwana.samantray@in.ibm.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /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 8f5b27347e88b171c755562f0090ce40e514fc00 # < make -s -j 8 ARCH=s390 O=/kisskb/build/powerpc-fixes_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux- defconfig # make -s -j 8 ARCH=s390 O=/kisskb/build/powerpc-fixes_s390-defconfig_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/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/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/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/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/drivers/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1843:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1753:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] Completed OK # rm -rf /kisskb/build/powerpc-fixes_s390-defconfig_s390x # Build took: 0:02:46.228599

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