Buildresult: powerpc-fixes/mpc86xx_defconfig/powerpc-gcc5 built on May 15 2019, 06:27

kisskb

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Status:	OK
Date/Time:	May 15 2019, 06:27
Duration:	0:01:33.969428
Builder:	ka1
Revision:	powerpc/mm: Fix crashes with hugepages & 4K pages (`2d4f9bdc22740d10984b850bdd74a86ad8ed3d23)`
Target:	powerpc-fixes/mpc86xx_defconfig/powerpc-gcc5
Branch:	powerpc-fixes
Compiler:	powerpc-gcc5 (powerpc64-linux-gcc (GCC) 5.5.0 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:	mpc86xx_defconfig (download)
Log:	Download original Possible warnings (13) <stdin>:1388:2: warning: #warning syscall open_tree not implemented [-Wcpp] <stdin>:1391:2: warning: #warning syscall move_mount not implemented [-Wcpp] <stdin>:1394:2: warning: #warning syscall fsopen not implemented [-Wcpp] <stdin>:1397:2: warning: #warning syscall fsconfig not implemented [-Wcpp] <stdin>:1400:2: warning: #warning syscall fsmount not implemented [-Wcpp] <stdin>:1403:2: warning: #warning syscall fspick not implemented [-Wcpp] kernel/futex.c:1658:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized] arch/powerpc/boot/dts/fsl/mvme7100.dts:140.22-142.4: Warning (pci_bridge): /pcie@f1008000: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:107.9-121.4: Warning (pci_bridge): /pcie@f1008000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/mvme7100.dts:144.22-146.4: Warning (pci_bridge): /pcie@f1009000: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:134.9-148.4: Warning (pci_bridge): /pcie@f1009000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/mvme7100.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' arch/powerpc/boot/dts/fsl/mvme7100.dts:35.11-37.6: Warning (i2c_bus_reg): /soc@f1000000/i2c@3000/rtc@68: missing or empty reg property Full Log # git rev-parse -q --verify 2d4f9bdc22740d10984b850bdd74a86ad8ed3d23^{commit} 2d4f9bdc22740d10984b850bdd74a86ad8ed3d23 already have revision, skipping fetch # git checkout -q -f -B kisskb 2d4f9bdc22740d10984b850bdd74a86ad8ed3d23 # git clean -qxdf # < git log -1 # commit 2d4f9bdc22740d10984b850bdd74a86ad8ed3d23 # Author: Michael Ellerman <mpe@ellerman.id.au> # Date: Tue May 14 23:00:58 2019 +1000 # # powerpc/mm: Fix crashes with hugepages & 4K pages # # The recent commit to cleanup ifdefs in the hugepage initialisation led # to crashes when using 4K pages as reported by Sachin: # # BUG: Kernel NULL pointer dereference at 0x0000001c # Faulting instruction address: 0xc000000001d1e58c # Oops: Kernel access of bad area, sig: 11 [#1] # LE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries # ... # CPU: 3 PID: 4635 Comm: futex_wake04 Tainted: G W O 5.1.0-next-20190507-autotest #1 # NIP: c000000001d1e58c LR: c000000001d1e54c CTR: 0000000000000000 # REGS: c000000004937890 TRAP: 0300 # MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 22424822 XER: 00000000 # CFAR: c00000000183e9e0 DAR: 000000000000001c DSISR: 40000000 IRQMASK: 0 # ... # NIP kmem_cache_alloc+0xbc/0x5a0 # LR kmem_cache_alloc+0x7c/0x5a0 # Call Trace: # huge_pte_alloc+0x580/0x950 # hugetlb_fault+0x9a0/0x1250 # handle_mm_fault+0x490/0x4a0 # __do_page_fault+0x77c/0x1f00 # do_page_fault+0x28/0x50 # handle_page_fault+0x18/0x38 # # This is caused by us trying to allocate from a NULL kmem cache in # __hugepte_alloc(). The kmem cache is NULL because it was never # allocated in hugetlbpage_init(), because add_huge_page_size() returned # an error. # # The reason add_huge_page_size() returned an error is a simple typo, we # are calling check_and_get_huge_psize(size) when we should be passing # shift instead. # # The fact that we're able to trigger this path when the kmem caches are # NULL is a separate bug, ie. we should not advertise any hugepage sizes # if we haven't setup the required caches for them. # # This was only seen with 4K pages, with 64K pages we don't need to # allocate any extra kmem caches because the 16M hugepage just occupies # a single entry at the PMD level. # # Fixes: 723f268f19da ("powerpc/mm: cleanup ifdef mess in add_huge_page_size()") # Reported-by: Sachin Sant <sachinp@linux.ibm.com> # Tested-by: Sachin Sant <sachinp@linux.ibm.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 2d4f9bdc22740d10984b850bdd74a86ad8ed3d23 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc86xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc86xx_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc86xx_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- <stdin>:1388:2: warning: #warning syscall open_tree not implemented [-Wcpp] <stdin>:1391:2: warning: #warning syscall move_mount not implemented [-Wcpp] <stdin>:1394:2: warning: #warning syscall fsopen not implemented [-Wcpp] <stdin>:1397:2: warning: #warning syscall fsconfig not implemented [-Wcpp] <stdin>:1400:2: warning: #warning syscall fsmount not implemented [-Wcpp] <stdin>:1403:2: warning: #warning syscall fspick not implemented [-Wcpp] /kisskb/src/kernel/futex.c: In function 'do_futex': /kisskb/src/kernel/futex.c:1658:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized] return oldval == cmparg; ^ /kisskb/src/kernel/futex.c:1633:6: note: 'oldval' was declared here int oldval, ret; ^ /kisskb/src/arch/powerpc/boot/dts/fsl/mvme7100.dts:140.22-142.4: Warning (pci_bridge): /pcie@f1008000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:97.7-122.3 /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:107.9-121.4: Warning (pci_bridge): /pcie@f1008000/pcie@0: missing ranges for PCI bridge (or not a bridge) /kisskb/src/arch/powerpc/boot/dts/fsl/mvme7100.dts:144.22-146.4: Warning (pci_bridge): /pcie@f1009000: missing ranges for PCI bridge (or not a bridge) also defined at /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:124.7-149.3 /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8641si-post.dtsi:134.9-148.4: Warning (pci_bridge): /pcie@f1009000/pcie@0: missing ranges for PCI bridge (or not a bridge) arch/powerpc/boot/dts/fsl/mvme7100.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' /kisskb/src/arch/powerpc/boot/dts/fsl/mvme7100.dts:35.11-37.6: Warning (i2c_bus_reg): /soc@f1000000/i2c@3000/rtc@68: missing or empty reg property INFO: Uncompressed kernel (size 0xa43010) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) Image Name: Linux-5.1.0-g2d4f9bdc2274 Created: Wed May 15 06:29:17 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5068846 Bytes = 4950.04 KiB = 4.83 MiB Load Address: 00000000 Entry Point: 00000000 Completed OK # rm -rf /kisskb/build/powerpc-fixes_mpc86xx_defconfig_powerpc-gcc5 # Build took: 0:01:33.969428

© Michael Ellerman 2006-2018.