Buildresult: powerpc-next/ppc64_defconfig+NO_ALTIVEC/powerpc-gcc4.6 built on Aug 25 2019, 22:29

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Status:	OK
Date/Time:	Aug 25 2019, 22:29
Duration:	0:03:12.501707
Builder:	blade46
Revision:	powerpc/spinlocks: Fix oops in shared-processor spinlocks (`5faa15883ebc90132b58c685316de2cd24735e90)`
Target:	powerpc-next/ppc64_defconfig+NO_ALTIVEC/powerpc-gcc4.6
Branch:	powerpc-next
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	ppc64_defconfig+NO_ALTIVEC (download)
Log:	Download original Possible warnings (13) drivers/base/regmap/regmap.c:2591:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:1852:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] net/bridge/br_netlink.c:648:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized] mm/hugetlb.c:1465:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] net/core/devlink.c:4443:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized] fs/nfsd/nfs4xdr.c:2065:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1831:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1744:46: warning: 'linear' 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/tty/serial/8250/8250_core.c:248:18: warning: 'i' 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 5faa15883ebc90132b58c685316de2cd24735e90^{commit} 5faa15883ebc90132b58c685316de2cd24735e90 already have revision, skipping fetch # git checkout -q -f -B kisskb 5faa15883ebc90132b58c685316de2cd24735e90 # git clean -qxdf # < git log -1 # commit 5faa15883ebc90132b58c685316de2cd24735e90 # Author: Christopher M. Riedl <cmr@informatik.wtf> # Date: Mon Aug 12 22:13:14 2019 -0500 # # powerpc/spinlocks: Fix oops in shared-processor spinlocks # # Booting w/ ppc64le_defconfig + CONFIG_PREEMPT results in the attached # kernel trace due to calling shared-processor spinlocks while not # running in an SPLPAR. Previously, the out-of-line spinlocks # implementations were selected based on CONFIG_PPC_SPLPAR at compile # time without a runtime shared-processor LPAR check. # # To fix, call the actual spinlock implementations from a set of common # functions, spin_yield() and rw_yield(), which check for # shared-processor LPAR during runtime and select the appropriate lock # implementation. # # BUG: Kernel NULL pointer dereference at 0x00000100 # Faulting instruction address: 0xc000000000097f88 # Oops: Kernel access of bad area, sig: 7 [#1] # LE PAGE_SIZE=64K MMU=Radix MMU=Hash PREEMPT SMP NR_CPUS=2048 NUMA PowerNV # Modules linked in: # CPU: 0 PID: 2 Comm: kthreadd Not tainted 5.2.0-rc6-00491-g249155c20f9b #28 # NIP: c000000000097f88 LR: c000000000c07a88 CTR: c00000000015ca10 # REGS: c0000000727079f0 TRAP: 0300 Not tainted (5.2.0-rc6-00491-g249155c20f9b) # MSR: 9000000002009033 <SF,HV,VEC,EE,ME,IR,DR,RI,LE> CR: 84000424 XER: 20040000 # CFAR: c000000000c07a84 DAR: 0000000000000100 DSISR: 00080000 IRQMASK: 1 # GPR00: c000000000c07a88 c000000072707c80 c000000001546300 c00000007be38a80 # GPR04: c0000000726f0c00 0000000000000002 c00000007279c980 0000000000000100 # GPR08: c000000001581b78 0000000080000001 0000000000000008 c00000007279c9b0 # GPR12: 0000000000000000 c000000001730000 c000000000142558 0000000000000000 # GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 # GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 # GPR24: c00000007be38a80 c000000000c002f4 0000000000000000 0000000000000000 # GPR28: c000000072221a00 c0000000726c2600 c00000007be38a80 c00000007be38a80 # NIP [c000000000097f88] __spin_yield+0x48/0xa0 # LR [c000000000c07a88] __raw_spin_lock+0xb8/0xc0 # Call Trace: # [c000000072707c80] [c000000072221a00] 0xc000000072221a00 (unreliable) # [c000000072707cb0] [c000000000bffb0c] __schedule+0xbc/0x850 # [c000000072707d70] [c000000000c002f4] schedule+0x54/0x130 # [c000000072707da0] [c0000000001427dc] kthreadd+0x28c/0x2b0 # [c000000072707e20] [c00000000000c1cc] ret_from_kernel_thread+0x5c/0x70 # Instruction dump: # 4d9e0020 552a043e 210a07ff 79080fe0 0b080000 3d020004 3908b878 794a1f24 # e8e80000 7ce7502a e8e70000 38e70100 <7ca03c2c> 70a70001 78a50020 4d820020 # ---[ end trace 474d6b2b8fc5cb7e ]--- # # Fixes: 499dcd41378e ("powerpc/64s: Allocate LPPACAs individually") # Signed-off-by: Christopher M. Riedl <cmr@informatik.wtf> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20190813031314.1828-4-cmr@informatik.wtf # < /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 5faa15883ebc90132b58c685316de2cd24735e90 # < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc64_defconfig+NO_ALTIVEC_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- ppc64_defconfig # Added to kconfig CONFIG_ALTIVEC=n # Added to kconfig CONFIG_PPC_TRANSACTIONAL_MEM=n # yes \n \| make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc64_defconfig+NO_ALTIVEC_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 32 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc64_defconfig+NO_ALTIVEC_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /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/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/net/bridge/br_netlink.c: In function 'br_afspec.isra.28': /kisskb/src/net/bridge/br_netlink.c:648:7: warning: 'err' 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/net/core/devlink.c: In function 'devlink_fmsg_prepare_skb': /kisskb/src/net/core/devlink.c:4443:6: 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/drivers/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1831:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1744:46: warning: 'linear' 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/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:228:19: note: 'i' was declared here /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] Completed OK # rm -rf /kisskb/build/powerpc-next_ppc64_defconfig+NO_ALTIVEC_powerpc-gcc4.6 # Build took: 0:03:12.501707

© Michael Ellerman 2006-2018.