Buildresult: powerpc-fixes/sparc64-defconfig/sparc64-gcc5 built on Nov 8 2018, 11:13

kisskb

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Status:	OK
Date/Time:	Nov 8 2018, 11:13
Duration:	0:01:35.658744
Builder:	ka1
Revision:	powerpc/mm/64s: Fix preempt warning in slb_allocate_kernel() (`a75a001540d03c30315e43884ad95cc68040f18d)`
Target:	powerpc-fixes/sparc64-defconfig/sparc64-gcc5
Branch:	powerpc-fixes
Compiler:	sparc64-gcc5 (sparc64-linux-gcc.br_real (Buildroot 2016.11-git-00613-ge98b4dd) 5.4.0)
Config:	defconfig (download)
Log:	Download original Possible warnings (3) <stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp] WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned. WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned. Full Log # git rev-parse -q --verify a75a001540d03c30315e43884ad95cc68040f18d^{commit} a75a001540d03c30315e43884ad95cc68040f18d already have revision, skipping fetch # git checkout -q -f -B kisskb a75a001540d03c30315e43884ad95cc68040f18d # git clean -qxdf # < git log -1 # commit a75a001540d03c30315e43884ad95cc68040f18d # Author: Michael Ellerman <mpe@ellerman.id.au> # Date: Thu Nov 1 16:21:05 2018 +1100 # # powerpc/mm/64s: Fix preempt warning in slb_allocate_kernel() # # With preempt enabled we see warnings in do_slb_fault(): # # BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u33:0/98 # futex hash table entries: 4096 (order: 3, 524288 bytes) # caller is do_slb_fault+0x204/0x230 # CPU: 5 PID: 98 Comm: kworker/u33:0 Not tainted 4.19.0-rc3-gcc-7.3.1-00022-g1936f094e164 #138 # Call Trace: # dump_stack+0xb4/0x104 (unreliable) # check_preemption_disabled+0x148/0x150 # do_slb_fault+0x204/0x230 # data_access_slb_common+0x138/0x180 # # This is caused by the get_paca() in slb_allocate_kernel(), which # includes a call to debug_smp_processor_id(). # # slb_allocate_kernel() can only be called from do_slb_fault(), and in # that path interrupts are hard disabled and so we can't be preempted, # but we can't update the preempt flags (in thread_info) because that # could cause an SLB fault. # # So just use local_paca which is safe and doesn't cause the warning. # # Fixes: 48e7b7695745 ("powerpc/64s/hash: Convert SLB miss handlers to C") # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version # < git log --format=%s --max-count=1 a75a001540d03c30315e43884ad95cc68040f18d # < make -s -j 8 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux- defconfig # make -s -j 8 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux- <stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp] WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned. WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned. kernel: arch/sparc/boot/image is ready kernel: arch/sparc/boot/zImage is ready Completed OK # rm -rf /kisskb/build/powerpc-fixes_sparc64-defconfig_sparc64 # Build took: 0:01:35.658744

© Michael Ellerman 2006-2018.