Buildresult: powerpc-next/mpc85xx_smp_defconfig/powerpc-gcc5 built on Jul 17 2021, 18:41

kisskb

Revisions | Branches | Compilers | Configs | Build Results | Build Failures |

Status:	OK
Date/Time:	Jul 17 2021, 18:41
Duration:	0:02:23.324967
Builder:	ka2
Revision:	powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi() (`7c6986ade69e3c81bac831645bc72109cd798a80)`
Target:	powerpc-next/mpc85xx_smp_defconfig/powerpc-gcc5
Branch:	powerpc-next
Compiler:	powerpc-gcc5 (powerpc64-linux-gcc (GCC) 5.5.0 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:	mpc85xx_smp_defconfig (download)
Log:	Download original Possible warnings (3) include/linux/err.h:22:49: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] arch/powerpc/boot/dts/fsl/mpc8541cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) arch/powerpc/boot/dts/fsl/mpc8555cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) Full Log # git rev-parse -q --verify 7c6986ade69e3c81bac831645bc72109cd798a80^{commit} 7c6986ade69e3c81bac831645bc72109cd798a80 already have revision, skipping fetch # git checkout -q -f -B kisskb 7c6986ade69e3c81bac831645bc72109cd798a80 # git clean -qxdf # < git log -1 # commit 7c6986ade69e3c81bac831645bc72109cd798a80 # Author: Michael Ellerman <mpe@ellerman.id.au> # Date: Fri Jun 25 16:28:41 2021 +1000 # # powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi() # # In raise_backtrace_ipi() we iterate through the cpumask of CPUs, sending # each an IPI asking them to do a backtrace, but we don't wait for the # backtrace to happen. # # We then iterate through the CPU mask again, and if any CPU hasn't done # the backtrace and cleared itself from the mask, we print a trace on its # behalf, noting that the trace may be "stale". # # This works well enough when a CPU is not responding, because in that # case it doesn't receive the IPI and the sending CPU is left to print the # trace. But when all CPUs are responding we are left with a race between # the sending and receiving CPUs, if the sending CPU wins the race then it # will erroneously print a trace. # # This leads to spurious "stale" traces from the sending CPU, which can # then be interleaved messily with the receiving CPU, note the CPU # numbers, eg: # # [ 1658.929157][ C7] rcu: Stack dump where RCU GP kthread last ran: # [ 1658.929223][ C7] Sending NMI from CPU 7 to CPUs 1: # [ 1658.929303][ C1] NMI backtrace for cpu 1 # [ 1658.929303][ C7] CPU 1 didn't respond to backtrace IPI, inspecting paca. # [ 1658.929362][ C1] CPU: 1 PID: 325 Comm: kworker/1:1H Tainted: G W E 5.13.0-rc2+ #46 # [ 1658.929405][ C7] irq_soft_mask: 0x01 in_mce: 0 in_nmi: 0 current: 325 (kworker/1:1H) # [ 1658.929465][ C1] Workqueue: events_highpri test_work_fn [test_lockup] # [ 1658.929549][ C7] Back trace of paca->saved_r1 (0xc0000000057fb400) (possibly stale): # [ 1658.929592][ C1] NIP: c00000000002cf50 LR: c008000000820178 CTR: c00000000002cfa0 # # To fix it, change the logic so that the sending CPU waits 5s for the # receiving CPU to print its trace. If the receiving CPU prints its trace # successfully then the sending CPU just continues, avoiding any spurious # "stale" trace. # # This has the added benefit of allowing all CPUs to print their traces in # order and avoids any interleaving of their output. # # Fixes: 5cc05910f26e ("powerpc/64s: Wire up arch_trigger_cpumask_backtrace()") # Cc: stable@vger.kernel.org # v4.18+ # Reported-by: Nathan Lynch <nathanl@linux.ibm.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20210625140408.3351173-1-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 7c6986ade69e3c81bac831645bc72109cd798a80 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_smp_defconfig # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/include/linux/kernel.h:11:0, from /kisskb/src/include/linux/list.h:9, from /kisskb/src/include/linux/module.h:12, from /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:15: /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/include/linux/err.h:22:49: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] #define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO) ^ /kisskb/src/include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: note: in expansion of macro 'IS_ERR_VALUE' if (IS_ERR_VALUE(fep->ring_mem_addr)) ^ /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8541cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8555cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe15354) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) INFO: Uncompressed kernel (size 0xe04c28) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xf00000) Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:04 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851059 Bytes = 6690.49 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f00314 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:04 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6821524 Bytes = 6661.64 KiB = 6.51 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:05 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851314 Bytes = 6690.74 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f002a4 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:05 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851646 Bytes = 6691.06 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f00314 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:05 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6852959 Bytes = 6692.34 KiB = 6.54 MiB Load Address: 00f00000 Entry Point: 00f002a4 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:05 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851250 Bytes = 6690.67 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f00314 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:06 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6852313 Bytes = 6691.71 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f002a4 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:06 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851651 Bytes = 6691.07 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f002a4 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:06 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851629 Bytes = 6691.04 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f00314 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:07 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851659 Bytes = 6691.07 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f002a4 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:07 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851787 Bytes = 6691.20 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f002a4 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:07 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851602 Bytes = 6691.02 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f002a4 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:07 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851620 Bytes = 6691.04 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f002a4 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:07 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851651 Bytes = 6691.07 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f002a4 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:07 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6851647 Bytes = 6691.06 KiB = 6.53 MiB Load Address: 00f00000 Entry Point: 00f00314 Image Name: Linux-5.13.0-rc2-112830-g7c6986a Created: Sat Jul 17 18:44:07 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6853033 Bytes = 6692.42 KiB = 6.54 MiB Load Address: 00f00000 Entry Point: 00f002a4 Completed OK # rm -rf /kisskb/build/powerpc-next_mpc85xx_smp_defconfig_powerpc-gcc5 # Build took: 0:02:23.324967

© Michael Ellerman 2006-2018.