Buildresult: powerpc-next/52xx/pcm030_defconfig/powerpc-gcc4.6 built on Jun 15 2019, 17:09

kisskb

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Status:	OK
Date/Time:	Jun 15 2019, 17:09
Duration:	0:00:21.502056
Builder:	ka4
Revision:	powerpc/pseries/mobility: rebuild cacheinfo hierarchy post-migration (`e610a466d16a086e321f0bd421e2fc75cff28605)`
Target:	powerpc-next/52xx/pcm030_defconfig/powerpc-gcc4.6
Branch:	powerpc-next
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	52xx/pcm030_defconfig (download)
Log:	Download original Possible warnings (6) kernel/rcu/srcutree.c:121:34: warning: 'levelspread[<U1640>]' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:2589:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:1850:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] kernel/futex.c:1658:3: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify e610a466d16a086e321f0bd421e2fc75cff28605^{commit} e610a466d16a086e321f0bd421e2fc75cff28605 already have revision, skipping fetch # git checkout -q -f -B kisskb e610a466d16a086e321f0bd421e2fc75cff28605 # git clean -qxdf # < git log -1 # commit e610a466d16a086e321f0bd421e2fc75cff28605 # Author: Nathan Lynch <nathanl@linux.ibm.com> # Date: Tue Jun 11 23:45:06 2019 -0500 # # powerpc/pseries/mobility: rebuild cacheinfo hierarchy post-migration # # It's common for the platform to replace the cache device nodes after a # migration. Since the cacheinfo code is never informed about this, it # never drops its references to the source system's cache nodes, causing # it to wind up in an inconsistent state resulting in warnings and oopses # as soon as CPU online/offline occurs after the migration, e.g. # # cache for /cpus/l3-cache@3113(Unified) refers to cache for /cpus/l2-cache@200d(Unified) # WARNING: CPU: 15 PID: 86 at arch/powerpc/kernel/cacheinfo.c:176 release_cache+0x1bc/0x1d0 # [...] # NIP release_cache+0x1bc/0x1d0 # LR release_cache+0x1b8/0x1d0 # Call Trace: # release_cache+0x1b8/0x1d0 (unreliable) # cacheinfo_cpu_offline+0x1c4/0x2c0 # unregister_cpu_online+0x1b8/0x260 # cpuhp_invoke_callback+0x114/0xf40 # cpuhp_thread_fun+0x270/0x310 # smpboot_thread_fn+0x2c8/0x390 # kthread+0x1b8/0x1c0 # ret_from_kernel_thread+0x5c/0x68 # # Using device tree notifiers won't work since we want to rebuild the # hierarchy only after all the removals and additions have occurred and # the device tree is in a consistent state. Call cacheinfo_teardown() # before processing device tree updates, and rebuild the hierarchy # afterward. # # Fixes: 410bccf97881 ("powerpc/pseries: Partition migration in the kernel") # Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> # Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.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 # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version # < git log --format=%s --max-count=1 e610a466d16a086e321f0bd421e2fc75cff28605 # < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_52xx_pcm030_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- 52xx/pcm030_defconfig # make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_52xx_pcm030_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields': /kisskb/src/kernel/rcu/srcutree.c:121:34: warning: 'levelspread[<U1640>]' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/rcu/srcutree.c:88:6: note: 'levelspread[<U1640>]' was declared here /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:331:21: note: 'pdeo' was declared here /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/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2589:6: 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:1850:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/futex.c: In function 'do_futex': /kisskb/src/kernel/futex.c:1658:3: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/futex.c:1633:6: note: 'oldval' was declared here INFO: Uncompressed kernel (size 0x489c8c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x500000) Image Name: Linux-5.2.0-rc2trunk+ Created: Sat Jun 15 17:10:21 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2305203 Bytes = 2251.17 KiB = 2.20 MiB Load Address: 00000000 Entry Point: 00000000 Completed OK # rm -rf /kisskb/build/powerpc-next_52xx_pcm030_defconfig_powerpc-gcc4.6 # Build took: 0:00:21.502056

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