Buildresult: powerpc-next/ia64-defconfig/ia64-gcc4.6 built on Sep 4 2019, 19:37
kisskb
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Status:
OK
Date/Time:
Sep 4 2019, 19:37
Duration:
0:02:23.447477
Builder:
blade46
Revision:
powerpc/imc: Dont create debugfs files for cpu-less nodes (
8a96efd384e6d0797a06a34503ebf21f133c74cb)
Target:
powerpc-next/ia64-defconfig/ia64-gcc4.6
Branch:
powerpc-next
Compiler:
ia64-gcc4.6
(ia64-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:
defconfig
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Log:
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Possible warnings (11)
warning: The last gc run reported the following. Please correct the root cause warning: There are too many unreachable loose objects; run 'git prune' to remove them. <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] mm/vmstat.c:90:5: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] kernel/fork.c:771:13: warning: 'task_struct_whitelist' defined but not used [-Wunused-function] mm/hugetlb.c:1465:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] fs/nfsd/nfs4xdr.c:2065:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] drivers/usb/core/devio.c:613:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized]
Full Log
# git rev-parse -q --verify 8a96efd384e6d0797a06a34503ebf21f133c74cb^{commit} # git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git next-test warning: The last gc run reported the following. Please correct the root cause and remove .git/gc.log. Automatic cleanup will not be performed until the file is removed. warning: There are too many unreachable loose objects; run 'git prune' to remove them. # git rev-parse -q --verify 8a96efd384e6d0797a06a34503ebf21f133c74cb^{commit} 8a96efd384e6d0797a06a34503ebf21f133c74cb # git checkout -q -f -B kisskb 8a96efd384e6d0797a06a34503ebf21f133c74cb # git clean -qxdf # < git log -1 # commit 8a96efd384e6d0797a06a34503ebf21f133c74cb # Author: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> # Date: Tue Aug 27 15:46:35 2019 +0530 # # powerpc/imc: Dont create debugfs files for cpu-less nodes # # Commit <684d984038aa> ('powerpc/powernv: Add debugfs interface for # imc-mode and imc') added debugfs interface for the nest imc pmu # devices to support changing of different ucode modes. Primarily adding # this capability for debug. But when doing so, the code did not # consider the case of cpu-less nodes. So when reading the _cmd_ or # _mode_ file of a cpu-less node will create this crash. # # Faulting instruction address: 0xc0000000000d0d58 # Oops: Kernel access of bad area, sig: 11 [#1] # ... # CPU: 67 PID: 5301 Comm: cat Not tainted 5.2.0-rc6-next-20190627+ #19 # NIP: c0000000000d0d58 LR: c00000000049aa18 CTR:c0000000000d0d50 # REGS: c00020194548f9e0 TRAP: 0300 Not tainted (5.2.0-rc6-next-20190627+) # MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR:28022822 XER: 00000000 # CFAR: c00000000049aa14 DAR: 000000000003fc08 DSISR:40000000 IRQMASK: 0 # ... # NIP imc_mem_get+0x8/0x20 # LR simple_attr_read+0x118/0x170 # Call Trace: # simple_attr_read+0x70/0x170 (unreliable) # debugfs_attr_read+0x6c/0xb0 # __vfs_read+0x3c/0x70 # vfs_read+0xbc/0x1a0 # ksys_read+0x7c/0x140 # system_call+0x5c/0x70 # # Patch fixes the issue with a more robust check for vbase to NULL. # # Before patch, ls output for the debugfs imc directory # # # ls /sys/kernel/debug/powerpc/imc/ # imc_cmd_0 imc_cmd_251 imc_cmd_253 imc_cmd_255 imc_mode_0 imc_mode_251 imc_mode_253 imc_mode_255 # imc_cmd_250 imc_cmd_252 imc_cmd_254 imc_cmd_8 imc_mode_250 imc_mode_252 imc_mode_254 imc_mode_8 # # After patch, ls output for the debugfs imc directory # # # ls /sys/kernel/debug/powerpc/imc/ # imc_cmd_0 imc_cmd_8 imc_mode_0 imc_mode_8 # # Actual bug here is that, we have two loops with potentially different # loop counts. That is, in imc_get_mem_addr_nest(), loop count is # obtained from the dt entries. But in case of export_imc_mode_and_cmd(), # loop was based on for_each_nid() count. Patch fixes the loop count in # latter based on the struct mem_info. Ideally it would be better to # have array size in struct imc_pmu. # # Fixes: 684d984038aa ('powerpc/powernv: Add debugfs interface for imc-mode and imc') # Reported-by: Qian Cai <cai@lca.pw> # Suggested-by: Michael Ellerman <mpe@ellerman.id.au> # Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20190827101635.6942-1-maddy@linux.vnet.ibm.com # < /opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux-ld --version # < git log --format=%s --max-count=1 8a96efd384e6d0797a06a34503ebf21f133c74cb # < make -s -j 32 ARCH=ia64 O=/kisskb/build/powerpc-next_ia64-defconfig_ia64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux- defconfig # make -s -j 32 ARCH=ia64 O=/kisskb/build/powerpc-next_ia64-defconfig_ia64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux- <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] /kisskb/src/mm/vmstat.c: In function 'sysctl_vm_numa_stat_handler': /kisskb/src/mm/vmstat.c:90:5: warning: 'oldval' 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/fork.c:771:13: warning: 'task_struct_whitelist' defined but not used [-Wunused-function] /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/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/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/fs/udf/unicode.c: In function 'udf_name_conv_char': /kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/usb/core/devio.c: In function 'async_completed': /kisskb/src/drivers/usb/core/devio.c:613:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized] No errors detected in 21596 functions. Kernel: vmlinux.gz is ready Completed OK # rm -rf /kisskb/build/powerpc-next_ia64-defconfig_ia64 # Build took: 0:02:23.447477
© Michael Ellerman 2006-2018.