linux-kernel - C=1 W=1 regression in 6.0?

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Date:   Wed, 10 Aug 2022 14:32:47 +0000
From:   Chuck Lever III <chuck.lever@...cle.com>
To:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: C=1 W=1 regression in 6.0?

This is usually a quiet compile, but after rebasing this morning
on origin/master:


[cel@...et manet]$ make C=1 W=1 fs/nfsd/vfs.o
make[1]: Entering directory '/usr/obj/manet.1015granger.net'
  GEN     Makefile
  UPD     include/config/kernel.release
  UPD     include/generated/utsrelease.h
  CALL    /home/cel/src/linux/manet/scripts/checksyscalls.sh
  CALL    /home/cel/src/linux/manet/scripts/atomic/check-atomics.sh
  DESCEND objtool
  DESCEND bpf/resolve_btfids
  CC [M]  fs/nfsd/vfs.o
  CHECK   /home/cel/src/linux/manet/fs/nfsd/vfs.c
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:66:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:29:9: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:30:9: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:32:10: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:32:16: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:27:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/arch/x86/include/asm/bitops.h, /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/instrumented-non-atomic.h:26:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:92:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:38:9: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:39:9: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:41:10: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:41:16: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:36:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/arch/x86/include/asm/bitops.h, /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/instrumented-non-atomic.h:42:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:56:9: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:57:9: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:59:10: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:59:15: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:54:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/arch/x86/include/asm/bitops.h, /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/instrumented-non-atomic.h:58:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:74:9: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:75:9: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:76:9: warning: unreplaced symbol 'old'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:78:10: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:78:14: warning: unreplaced symbol 'old'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:78:20: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:79:17: warning: unreplaced symbol 'old'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:79:23: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:79:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:72:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/arch/x86/include/asm/bitops.h, /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/instrumented-non-atomic.h:100:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/include/asm-generic/bitops/instrumented-non-atomic.h:97:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:94:9: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:95:9: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:96:9: warning: unreplaced symbol 'old'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:98:10: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:98:14: warning: unreplaced symbol 'old'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:98:21: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:99:17: warning: unreplaced symbol 'old'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:99:23: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:99:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:92:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/arch/x86/include/asm/bitops.h, /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/instrumented-non-atomic.h:115:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/include/asm-generic/bitops/instrumented-non-atomic.h:112:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:195:16: warning: unreplaced symbol 'oldbit'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:195:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:106:9: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:107:9: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:108:9: warning: unreplaced symbol 'old'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:110:10: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:110:14: warning: unreplaced symbol 'old'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:110:20: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:111:17: warning: unreplaced symbol 'old'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:111:23: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:111:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:104:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/arch/x86/include/asm/bitops.h, /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/instrumented-non-atomic.h:130:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/include/asm-generic/bitops/instrumented-non-atomic.h:127:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:225:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/arch/x86/include/asm/bitops.h:223:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, /home/cel/src/linux/manet/arch/x86/include/asm/percpu.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:127:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:120:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:154:9: warning: unreplaced symbol 'p'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:155:9: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:156:9: warning: unreplaced symbol 'val'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:158:19: warning: unreplaced symbol 'val'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:158:25: warning: unreplaced symbol 'mask'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:158:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/include/asm-generic/bitops/generic-non-atomic.h:152:1: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/fs/nfsd/vfs.c: note: in included file (through /home/cel/src/linux/manet/arch/x86/include/asm/bitops.h, /home/cel/src/linux/manet/include/linux/bitops.h, /home/cel/src/linux/manet/include/linux/kernel.h, ...):
/home/cel/src/linux/manet/include/asm-generic/bitops/instrumented-non-atomic.h:142:9: warning: unreplaced symbol 'return'
/home/cel/src/linux/manet/include/asm-generic/bitops/instrumented-non-atomic.h:139:1: warning: unreplaced symbol 'return'
make[1]: Leaving directory '/usr/obj/manet.1015granger.net'
[cel@...et manet]$


--
Chuck Lever