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kern/57514: Self build fails on evbarm-aarch64
>Number: 57514
>Category: kern
>Synopsis: Self build fails on evbarm-aarch64
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sat Jul 08 07:35:00 +0000 2023
>Originator: Takahiro Kambe
>Release: NetBSD 10.99.4
>Organization:
>Environment:
System: NetBSD m2utm.a.back-street.net 10.99.4 NetBSD 10.99.4 (GENERIC64) #6: Fri Jul 7 23:40:33 JST 2023 taca%m2utm.a.back-street.net@localhost:/data/current/evbarm/obj/sys/arch/evbarm/compile/GENERIC64 evbarm
Architecture: aarch64
Machine: evbarm
>Description:
Self build fails on evbarm-aarch64.
>How-To-Repeat:
Build kernel on NetBSD-10.99.4-evbarm.
I tested NetBSD 10.99.4 running on UTM 4.3.0 (https://getutm.app/)
under macOS 13.4.1 / MacBook Air M2. (Yes, it might be problem of
UTM 4.3.0 / qemu 8.0.0.)
% sh build.sh -X /usr/xsrc -x -D /data/current/evbarm/tree -O /data/current/evbarm/obj -R /data/current/release -N1 -a aarch64 -m evbarm -U -x -u -j1 kernel=GENERIC64
...
===> Building kernel without building new tools
===> Building kernel: GENERIC64
...
compile GENERIC64/uvm_bio.o
/usr/src/sys/uvm/uvm_bio.c: In function 'ubc_fault':
/usr/src/sys/uvm/uvm_bio.c:308:1: error: stack usage might be unbounded [-Werror=stack-usage=]
308 | ubc_fault(struct uvm_faultinfo *ufi, vaddr_t ign1, struct vm_page **ign2,
| ^~~~~~~~~
/usr/src/sys/uvm/uvm_bio.c: In function 'ubc_uiomove':
/usr/src/sys/uvm/uvm_bio.c:740:1: error: stack usage might be unbounded [-Werror=stack-usage=]
740 | ubc_uiomove(struct uvm_object *uobj, struct uio *uio, vsize_t todo, int advice,
| ^~~~~~~~~~~
/usr/src/sys/uvm/uvm_bio.c: In function 'ubc_zerorange':
/usr/src/sys/uvm/uvm_bio.c:807:1: error: stack usage might be unbounded [-Werror=stack-usage=]
807 | ubc_zerorange(struct uvm_object *uobj, off_t off, size_t len, int flags)
| ^~~~~~~~~~~~~
/usr/src/sys/uvm/uvm_bio.c: In function 'ubc_uiomove_direct':
/usr/src/sys/uvm/uvm_bio.c:980:1: error: stack usage might be unbounded [-Werror=stack-usage=]
980 | ubc_uiomove_direct(struct uvm_object *uobj, struct uio *uio, vsize_t todo, int advice,
| ^~~~~~~~~~~~~~~~~~
/usr/src/sys/uvm/uvm_bio.c: In function 'ubc_zerorange_direct':
/usr/src/sys/uvm/uvm_bio.c:1050:1: error: stack usage might be unbounded [-Werror=stack-usage=]
1050 | ubc_zerorange_direct(struct uvm_object *uobj, off_t off, size_t todo, int flags)
| ^~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
*** Failed target: uvm_bio.o
*** Failed commands:
${NORMAL_C}
=> @echo ' ' "compile GENERIC64/uvm_bio.o" && : echo /data/current/evbarm/obj/tooldir-NetBSD-10.99.4-evbarm/bin/aarch64--netbsd-gcc -Wno-stack-protector -march=armv8-a+nofp+nosimd -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -ffreestanding -fno-zero-initialized-in-bss -fno-delete-null-pointer-checks -g -pipe -pipe -fstack-usage -Wstack-usage=3584 -fno-strict-aliasing -fno-common -Wno-stack-protector -std=gnu99 -Werror -Wall -Wno-main -Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes -Wold-style-definition -Wswitch -Wshadow -Wcast-qual -Wwrite-strings -Wno-unreachable-code -Wno-pointer-sign -Wno-attributes -Wno-type-limits -Wno-sign-compare -Wno-address-of-packed-member -Walloca --sysroot=/data/current/evbarm/tree -I. -I/usr/src/sys/external/bsd/libnv/dist -I/usr/src/sys/external/bsd/acpica/dist -I/usr/src/sys/../common/lib/libx86emu -I/usr/src/sys/../common/lib/libc/misc -I/usr/src/sys/../common/include -I/usr/src/sys/ar
ch -I/usr/src/sys -nostdinc -DCOMPAT_UTILS -DAARCH64 -DARM_GENERIC_TODR -DFPU_VFP -D__HAVE_PCI_CONF_HOOK -D__HAVE_PCI_MSI_MSIX -DCOMPAT_44 -DDIAGNOSTIC -DARMV81_PAN -D_KERNEL -D_KERNEL_OPT -std=gnu99 -I/usr/src/sys/lib/libkern/../../../common/lib/libc/quad -I/usr/src/sys/lib/libkern/../../../common/lib/libc/string -I/usr/src/sys/lib/libkern/../../../common/lib/libc/arch/aarch64/string -I/usr/src/sys/lib/libkern/../../../common/lib/libc/arch/aarch64/atomic -I/usr/src/sys/lib/libkern/../../../common/lib/libc/hash/sha3 -I/usr/src/sys/external/bsd -I/usr/src/sys/external/bsd/common/include -I/usr/src/sys/external/bsd/dwc2/dist -I/usr/src/sys/external/bsd/libfdt/dist -I/usr/src/sys/external/bsd/acpica/dist/include -I/usr/src/sys/external/bsd/libnv/dist -I/usr/src/sys/external/bsd/vchiq/dist -I/usr/src/sys/external/bsd/common/include -DVCOS_VERIFY_BKPTS=1 -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000 -DVCHIQ_ENABLE_DEBUG=1 -DVCHIQ_LOG_DEFAULT=5 -c /usr/src/sys/uvm/uvm_bio.c -o uvm
_bio.o && /data/current/evbarm/obj/tooldir-NetBSD-10.99.4-evbarm/bin/aarch64--netbsd-gcc -Wno-stack-protector -march=armv8-a+nofp+nosimd -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -ffreestanding -fno-zero-initialized-in-bss -fno-delete-null-pointer-checks -g -pipe -pipe -fstack-usage -Wstack-usage=3584 -fno-strict-aliasing -fno-common -Wno-stack-protector -std=gnu99 -Werror -Wall -Wno-main -Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes -Wold-style-definition -Wswitch -Wshadow -Wcast-qual -Wwrite-strings -Wno-unreachable-code -Wno-pointer-sign -Wno-attributes -Wno-type-limits -Wno-sign-compare -Wno-address-of-packed-member -Walloca --sysroot=/data/current/evbarm/tree -I. -I/usr/src/sys/external/bsd/libnv/dist -I/usr/src/sys/external/bsd/acpica/dist -I/usr/src/sys/../common/lib/libx86emu -I/usr/src/sys/../common/lib/libc/misc -I/usr/src/sys/../common/include -I/usr/src/sys/arch -I/usr/src/sys -nostdinc -DCOMPAT_UTILS
-DAARCH64 -DARM_GENERIC_TODR -DFPU_VFP -D__HAVE_PCI_CONF_HOOK -D__HAVE_PCI_MSI_MSIX -DCOMPAT_44 -DDIAGNOSTIC -DARMV81_PAN -D_KERNEL -D_KERNEL_OPT -std=gnu99 -I/usr/src/sys/lib/libkern/../../../common/lib/libc/quad -I/usr/src/sys/lib/libkern/../../../common/lib/libc/string -I/usr/src/sys/lib/libkern/../../../common/lib/libc/arch/aarch64/string -I/usr/src/sys/lib/libkern/../../../common/lib/libc/arch/aarch64/atomic -I/usr/src/sys/lib/libkern/../../../common/lib/libc/hash/sha3 -I/usr/src/sys/external/bsd -I/usr/src/sys/external/bsd/common/include -I/usr/src/sys/external/bsd/dwc2/dist -I/usr/src/sys/external/bsd/libfdt/dist -I/usr/src/sys/external/bsd/acpica/dist/include -I/usr/src/sys/external/bsd/libnv/dist -I/usr/src/sys/external/bsd/vchiq/dist -I/usr/src/sys/external/bsd/common/include -DVCOS_VERIFY_BKPTS=1 -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000 -DVCHIQ_ENABLE_DEBUG=1 -DVCHIQ_LOG_DEFAULT=5 -c /usr/src/sys/uvm/uvm_bio.c -o uvm_bio.o && : echo /data/current/evbarm/obj/t
ooldir-NetBSD-10.99.4-evbarm/bin/nbctfconvert -g -L VERSION -g uvm_bio.o && /data/current/evbarm/obj/tooldir-NetBSD-10.99.4-evbarm/bin/nbctfconvert -g -L VERSION -g uvm_bio.o
*** [uvm_bio.o] Error code 1
nbmake: stopped in /data/current/evbarm/obj/sys/arch/evbarm/compile/GENERIC64
1 error
nbmake: stopped in /data/current/evbarm/obj/sys/arch/evbarm/compile/GENERIC64
ERROR: Failed to make all in "/data/current/evbarm/obj/sys/arch/evbarm/compile/GENERIC64"
*** BUILD ABORTED ***
>Fix:
Below change solve the problem.
I don't know where come from a magic number 3584...
diff --git a/sys/conf/Makefile.kern.inc b/sys/conf/Makefile.kern.inc
index 210c1739b2..4b53913b7c 100644
--- a/sys/conf/Makefile.kern.inc
+++ b/sys/conf/Makefile.kern.inc
@@ -113,7 +113,7 @@ AFLAGS+= -D_LOCORE -Wa,--fatal-warnings
# find . -name \*.su | xargs awk '{ printf "%6d %s\n", $2, $1 }' | sort -n
.if ${MACHINE} != "vax"
# GCC/vax 8.4 does not support -fstack-usage.
-CFLAGS+= ${${ACTIVE_CC} == "gcc":? -fstack-usage -Wstack-usage=3584 :}
+#CFLAGS+= ${${ACTIVE_CC} == "gcc":? -fstack-usage -Wstack-usage=3584 :}
.endif
CWARNFLAGS+= -Walloca
>Unformatted:
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