Buildresult: powerpc-next-rand/powerpc-randconfig/powerpc-gcc4.6 built on Jul 3 2018, 02:38

kisskb

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Status:	OK
Date/Time:	Jul 3 2018, 02:38
Duration:	0:01:36.034269
Builder:	ka3
Revision:	ocxl: Fix page fault handler in case of fault on dying process (`d497ebf5fb3a026c0817f8c96cde578787f24093)`
Target:	powerpc-next-rand/powerpc-randconfig/powerpc-gcc4.6
Branch:	powerpc-next-rand
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3)
Config:	randconfig (download)
Log:	Download original Possible warnings (19) WARNING: unmet direct dependencies detected for FSL_EMB_PERFMON kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] lib/mpi/mpicoder.c:352:8: warning: 'buff' may be used uninitialized in this function [-Wuninitialized] lib/rhashtable.c:269:2: warning: 'next' may be used uninitialized in this function [-Wuninitialized] mm/ksm.c:1395:15: warning: 'found_rmap_hlist_len' may be used uninitialized in this function [-Wuninitialized] drivers/char/tpm/tpm-sysfs.c:37:16: warning: 'tpm_buf.data' 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/dma-buf/reservation.c:210:7: warning: 'i' may be used uninitialized in this function [-Wuninitialized] drivers/dma/sh/rcar-dmac.c:939:23: warning: 'high_mem_addr' may be used uninitialized in this function [-Wuninitialized] drivers/dma/sh/rcar-dmac.c:938:23: warning: 'high_dev_addr' may be used uninitialized in this function [-Wuninitialized] drivers/hwspinlock/hwspinlock_core.c:328:6: warning: 'id' may be used uninitialized in this function [-Wuninitialized] drivers/misc/cxl/native.c:1248:10: warning: 'ph' may be used uninitialized in this function [-Wuninitialized] drivers/misc/cxl/native.c:1248:10: warning: 'dsisr' may be used uninitialized in this function [-Wuninitialized] drivers/slimbus/messaging.c:126:14: warning: 'tid' may be used uninitialized in this function [-Wuninitialized] drivers/scsi/am53c974.c:199:6: warning: 'resid' may be used uninitialized in this function [-Wuninitialized] drivers/scsi/hpsa.c:2660:12: warning: 'ascq' may be used uninitialized in this function [-Wuninitialized] drivers/scsi/hpsa.c:2660:12: warning: 'asc' may be used uninitialized in this function [-Wuninitialized] drivers/scsi/hpsa.c:2660:12: warning: 'sense_key' may be used uninitialized in this function [-Wuninitialized] WARNING: vmlinux.o(.text+0x67d06c): Section mismatch in reference from the function .create_device_attrs() to the function .init.text:.make_sensor_label() Full Log # git rev-parse -q --verify d497ebf5fb3a026c0817f8c96cde578787f24093^{commit} d497ebf5fb3a026c0817f8c96cde578787f24093 already have revision, skipping fetch # git checkout -q -f -B kisskb d497ebf5fb3a026c0817f8c96cde578787f24093 # git clean -qxdf # < git log -1 # commit d497ebf5fb3a026c0817f8c96cde578787f24093 # Author: Frederic Barrat <fbarrat@linux.ibm.com> # Date: Mon Jun 18 14:14:36 2018 +0200 # # ocxl: Fix page fault handler in case of fault on dying process # # If a process exits without doing proper cleanup, there's a window # where an opencapi device can try to access the memory of the dying # process and may trigger a page fault. That's an expected scenario and # the ocxl driver holds a reference on the mm_struct of the process # until the opencapi device is notified of the process exiting. # However, if mm_users is already at 0, i.e. the address space of the # process has already been destroyed, the driver shouldn't try resolving # the page fault, as it will fail, but it can also try accessing already # freed data. # # It is fixed by only calling the bottom half of the page fault handler # if mm_users is greater than 0 and get a reference on mm_users instead # of mm_count. Otherwise, we can safely return a translation fault to # the device, as its associated memory context is being removed. The # opencapi device will be properly cleaned up shortly after when closing # the file descriptors. # # Fixes: 5ef3166e8a32 ("ocxl: Driver code for 'generic' opencapi devices") # Cc: stable@vger.kernel.org # v4.16+ # Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com> # Reviewed-By: Alastair D'Silva <alastair@d-silva.org> # Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < git log --format=%s --max-count=1 d497ebf5fb3a026c0817f8c96cde578787f24093 # < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- randconfig KCONFIG_SEED=0x970E06C9 WARNING: unmet direct dependencies detected for FSL_EMB_PERFMON Depends on [n]: E500 [=n] \|\| PPC_83xx [=n] Selected by [y]: - PPC_FSL_BOOK3E [=y] # Added to kconfig CONFIG_STANDALONE=y # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_CPU_BIG_ENDIAN=y # Added to kconfig CONFIG_PPC64=y # Added to kconfig CONFIG_PPC_DISABLE_WERROR=y # Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=y # Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y # Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n # Added to kconfig CONFIG_GCC_PLUGINS=n # Added to kconfig CONFIG_LD_HEAD_STUB_CATCH=y # Added to kconfig # yes \n \| make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- oldconfig yes: standard output: Broken pipe yes: write error # make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter. /kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter. /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/lib/mpi/mpicoder.c: In function 'mpi_read_raw_from_sgl': /kisskb/src/lib/mpi/mpicoder.c:352:8: warning: 'buff' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/lib/rhashtable.c: In function 'rhashtable_rehash_one': /kisskb/src/lib/rhashtable.c:269:2: warning: 'next' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/mm/ksm.c: In function 'stable_node_dup': /kisskb/src/mm/ksm.c:1395:15: warning: 'found_rmap_hlist_len' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/char/tpm/tpm-sysfs.c: In function 'pubek_show': /kisskb/src/drivers/char/tpm/tpm-sysfs.c:37:16: warning: 'tpm_buf.data' 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/dma-buf/reservation.c: In function 'reservation_object_add_shared_replace': /kisskb/src/drivers/dma-buf/reservation.c:210:7: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/dma/sh/rcar-dmac.c: In function 'rcar_dmac_chan_prep_sg': /kisskb/src/drivers/dma/sh/rcar-dmac.c:939:23: warning: 'high_mem_addr' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/dma/sh/rcar-dmac.c:938:23: warning: 'high_dev_addr' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/hwspinlock/hwspinlock_core.c: In function 'of_hwspin_lock_get_id': /kisskb/src/drivers/hwspinlock/hwspinlock_core.c:328:6: warning: 'id' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/misc/cxl/native.c: In function 'native_irq_wait': /kisskb/src/drivers/misc/cxl/native.c:1248:10: warning: 'ph' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/misc/cxl/native.c:1248:10: warning: 'dsisr' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/slimbus/messaging.c: In function 'slim_do_transfer': /kisskb/src/drivers/slimbus/messaging.c:126:14: warning: 'tid' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/scsi/am53c974.c: In function 'pci_esp_dma_drain': /kisskb/src/drivers/scsi/am53c974.c:199:6: warning: 'resid' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/scsi/hpsa.c: In function 'complete_scsi_command': /kisskb/src/drivers/scsi/hpsa.c:2660:12: warning: 'ascq' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/scsi/hpsa.c:2660:12: warning: 'asc' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/scsi/hpsa.c:2660:12: warning: 'sense_key' may be used uninitialized in this function [-Wuninitialized] WARNING: vmlinux.o(.text+0x67d06c): Section mismatch in reference from the function .create_device_attrs() to the function .init.text:.make_sensor_label() The function .create_device_attrs() references the function __init .make_sensor_label(). This is often because .create_device_attrs lacks a __init annotation or the annotation of .make_sensor_label is wrong. Completed OK # rm -rf /kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc # Build took: 0:01:36.034269

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