Buildresult: linus/generic-32bit_defconfig/parisc-gcc8 built on Jul 31 2021, 11:00

kisskb

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Status:	OK
Date/Time:	Jul 31 2021, 11:00
Duration:	0:01:42.420576
Builder:	ka1
Revision:	pipe: make pipe writes always wake up readers (`3a34b13a88caeb2800ab44a4918f230041b37dd9)`
Target:	linus/generic-32bit_defconfig/parisc-gcc8
Branch:	linus
Compiler:	parisc-gcc8 (hppa-linux-gcc (GCC) 8.1.0 / GNU ld (GNU Binutils) 2.30)
Config:	generic-32bit_defconfig (download)
Log:	Download original Possible warnings (53) arch/parisc/math-emu/fpudispatch.c:312:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:314:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:327:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:329:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:343:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:345:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:359:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:361:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:305:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:320:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:336:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:352:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:368:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:410:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:423:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:438:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:453:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:468:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:483:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:498:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:574:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:625:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:637:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:649:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:661:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:300:3: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:408:3: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:521:7: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:738:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:749:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:760:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:771:18: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:733:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:744:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:755:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:766:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:777:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:817:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:830:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:845:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:860:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:875:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:890:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:905:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:1021:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:1030:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:1042:8: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:1075:5: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:728:3: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:815:3: warning: this statement may fall through [-Wimplicit-fallthrough=] arch/parisc/math-emu/fpudispatch.c:938:7: warning: this statement may fall through [-Wimplicit-fallthrough=] block/genhd.c:1181:1: warning: the frame size of 1712 bytes is larger than 1280 bytes [-Wframe-larger-than=] lib/xxhash.c:236:1: warning: the frame size of 1656 bytes is larger than 1280 bytes [-Wframe-larger-than=] Full Log # git rev-parse -q --verify 3a34b13a88caeb2800ab44a4918f230041b37dd9^{commit} 3a34b13a88caeb2800ab44a4918f230041b37dd9 already have revision, skipping fetch # git checkout -q -f -B kisskb 3a34b13a88caeb2800ab44a4918f230041b37dd9 # git clean -qxdf # < git log -1 # commit 3a34b13a88caeb2800ab44a4918f230041b37dd9 # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Fri Jul 30 15:42:34 2021 -0700 # # pipe: make pipe writes always wake up readers # # Since commit 1b6b26ae7053 ("pipe: fix and clarify pipe write wakeup # logic") we have sanitized the pipe write logic, and would only try to # wake up readers if they needed it. # # In particular, if the pipe already had data in it before the write, # there was no point in trying to wake up a reader, since any existing # readers must have been aware of the pre-existing data already. Doing # extraneous wakeups will only cause potential thundering herd problems. # # However, it turns out that some Android libraries have misused the EPOLL # interface, and expected "edge triggered" be to "any new write will # trigger it". Even if there was no edge in sight. # # Quoting Sandeep Patil: # "The commit 1b6b26ae7053 ('pipe: fix and clarify pipe write wakeup # logic') changed pipe write logic to wakeup readers only if the pipe # was empty at the time of write. However, there are libraries that # relied upon the older behavior for notification scheme similar to # what's described in [1] # # One such library 'realm-core'[2] is used by numerous Android # applications. The library uses a similar notification mechanism as GNU # Make but it never drains the pipe until it is full. When Android moved # to v5.10 kernel, all applications using this library stopped working. # # The library has since been fixed[3] but it will be a while before all # applications incorporate the updated library" # # Our regression rule for the kernel is that if applications break from # new behavior, it's a regression, even if it was because the application # did something patently wrong. Also note the original report [4] by # Michal Kerrisk about a test for this epoll behavior - but at that point # we didn't know of any actual broken use case. # # So add the extraneous wakeup, to approximate the old behavior. # # [ I say "approximate", because the exact old behavior was to do a wakeup # not for each write(), but for each pipe buffer chunk that was filled # in. The behavior introduced by this change is not that - this is just # "every write will cause a wakeup, whether necessary or not", which # seems to be sufficient for the broken library use. ] # # It's worth noting that this adds the extraneous wakeup only for the # write side, while the read side still considers the "edge" to be purely # about reading enough from the pipe to allow further writes. # # See commit f467a6a66419 ("pipe: fix and clarify pipe read wakeup logic") # for the pipe read case, which remains that "only wake up if the pipe was # full, and we read something from it". # # Link: https://lore.kernel.org/lkml/CAHk-=wjeG0q1vgzu4iJhW5juPkTsjTYmiqiMUYAebWW+0bam6w@mail.gmail.com/ [1] # Link: https://github.com/realm/realm-core [2] # Link: https://github.com/realm/realm-core/issues/4666 [3] # Link: https://lore.kernel.org/lkml/CAKgNAkjMBGeAwF=2MKK758BhxvW58wYTgYKB2V-gY1PwXxrH+Q@mail.gmail.com/ [4] # Link: https://lore.kernel.org/lkml/20210729222635.2937453-1-sspatil@android.com/ # Reported-by: Sandeep Patil <sspatil@android.com> # Cc: Michael Kerrisk <mtk.manpages@gmail.com> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux-ld --version # < git log --format=%s --max-count=1 3a34b13a88caeb2800ab44a4918f230041b37dd9 # < make -s -j 48 ARCH=parisc O=/kisskb/build/linus_generic-32bit_defconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux- generic-32bit_defconfig # < make -s -j 48 ARCH=parisc O=/kisskb/build/linus_generic-32bit_defconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux- help # make -s -j 48 ARCH=parisc O=/kisskb/build/linus_generic-32bit_defconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux- olddefconfig # make -s -j 48 ARCH=parisc O=/kisskb/build/linus_generic-32bit_defconfig_parisc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa-linux/bin/hppa-linux- /kisskb/src/arch/parisc/math-emu/fpudispatch.c: In function 'decode_0c': /kisskb/src/arch/parisc/math-emu/fpudispatch.c:312:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+2] = fpregs[r1+2]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:313:9: note: here case 1: /* double / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:314:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+1] = fpregs[r1+1]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:315:9: note: here case 0: / single / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:327:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+2] = fpregs[r1+2]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:328:9: note: here case 1: / double / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:329:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+1] = fpregs[r1+1]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:330:9: note: here case 0: / single / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:343:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+2] = fpregs[r1+2]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:344:9: note: here case 1: / double / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:345:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+1] = fpregs[r1+1]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:346:9: note: here case 0: / single / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:359:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+2] = fpregs[r1+2]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:360:9: note: here case 1: / double / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:361:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+1] = fpregs[r1+1]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:362:9: note: here case 0: / single / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:305:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:319:4: note: here case 3: / FABS / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:320:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:335:4: note: here case 6: / FNEG / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:336:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:351:4: note: here case 7: / FNEGABS / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:352:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:367:4: note: here case 4: / FSQRT / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:368:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:379:4: note: here case 5: / FRND / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:410:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:422:4: note: here case 1: / FCNVXF / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:423:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:437:4: note: here case 2: / FCNVFX / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:438:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:452:4: note: here case 3: / FCNVFXT / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:453:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:467:4: note: here case 5: / FCNVUF (PA2.0 only) / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:468:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:482:4: note: here case 6: / FCNVFU (PA2.0 only) / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:483:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:497:4: note: here case 7: / FCNVFUT (PA2.0 only) / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:498:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:512:4: note: here case 4: / undefined / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:574:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:593:4: note: here case 1: / FTEST / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:625:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:636:4: note: here case 1: / FSUB / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:637:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:648:4: note: here case 2: / FMPY / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:649:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:660:4: note: here case 3: / FDIV / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:661:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:672:4: note: here case 4: / FREM / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:300:3: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (subop) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:393:2: note: here case 1: / class 1 / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:408:3: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (subop) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:516:2: note: here case 2: / class 2 / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:521:7: warning: this statement may fall through [-Wimplicit-fallthrough=] if (fpu_type_flags & PA2_0_FPU_FLAG) { ^ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:614:2: note: here case 3: / class 3 / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c: In function 'decode_0e': /kisskb/src/arch/parisc/math-emu/fpudispatch.c:738:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+1] = fpregs[r1+1]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:739:9: note: here case 0: / single / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:749:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+1] = fpregs[r1+1]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:750:9: note: here case 0: / single / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:760:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+1] = fpregs[r1+1]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:761:9: note: here case 0: / single / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:771:18: warning: this statement may fall through [-Wimplicit-fallthrough=] fpregs[t+1] = fpregs[r1+1]; ~~~~~~~~~~~~^~~~~~~~~~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:772:9: note: here case 0: / single / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:733:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:743:4: note: here case 3: / FABS / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:744:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:754:4: note: here case 6: / FNEG / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:755:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:765:4: note: here case 7: / FNEGABS / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:766:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:776:4: note: here case 4: / FSQRT / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:777:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:788:4: note: here case 5: / FRMD / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:817:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:829:4: note: here case 1: / FCNVXF / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:830:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:844:4: note: here case 2: / FCNVFX / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:845:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:859:4: note: here case 3: / FCNVFXT / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:860:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:874:4: note: here case 5: / FCNVUF (PA2.0 only) / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:875:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:889:4: note: here case 6: / FCNVFU (PA2.0 only) / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:890:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:904:4: note: here case 7: / FCNVFUT (PA2.0 only) / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:905:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch(fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:919:4: note: here case 4: / undefined / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:1021:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:1029:4: note: here case 1: / FSUB / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:1030:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:1038:4: note: here case 2: / FMPY or XMPYU / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:1042:8: warning: this statement may fall through [-Wimplicit-fallthrough=] if (extru(ir,fpxpos,1)) { ^ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:1074:4: note: here case 3: / FDIV / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:1075:5: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (fmt) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:1083:4: note: here case 4: / FREM / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:728:3: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (subop) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:802:2: note: here case 1: / class 1 / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:815:3: warning: this statement may fall through [-Wimplicit-fallthrough=] switch (subop) { ^~~~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:922:2: note: here case 2: / class 2 / ^~~~ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:938:7: warning: this statement may fall through [-Wimplicit-fallthrough=] if (fpu_type_flags & PA2_0_FPU_FLAG) { ^ /kisskb/src/arch/parisc/math-emu/fpudispatch.c:997:2: note: here case 3: / class 3 */ ^~~~ /kisskb/src/block/genhd.c: In function 'diskstats_show': /kisskb/src/block/genhd.c:1181:1: warning: the frame size of 1712 bytes is larger than 1280 bytes [-Wframe-larger-than=] } ^ /kisskb/src/lib/xxhash.c: In function 'xxh64': /kisskb/src/lib/xxhash.c:236:1: warning: the frame size of 1656 bytes is larger than 1280 bytes [-Wframe-larger-than=] } ^ Completed OK # rm -rf /kisskb/build/linus_generic-32bit_defconfig_parisc-gcc8 # Build took: 0:01:42.420576

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