From: syzbot <syzbot+1cf303af03cf30b1275a@syzkaller.appspotmail.com>
To: hdanton@sina.com, linux-kernel@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [kernel?] INFO: task hung in nsim_bus_dev_del
Date: Sat, 16 May 2026 05:35:02 -0700 [thread overview]
Message-ID: <6a086476.170a0220.4530d.0004.GAE@google.com> (raw)
In-Reply-To: <20260516110423.721-1-hdanton@sina.com>
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
can't ssh into the instance
failed to run ["ssh" "-p" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "root@10.128.1.219" "pwd"]: exit status 255
ssh: connect to host 10.128.1.219 port 22: Connection timed out
Pseudo-terminal will not be allocated because stdin is not a terminal.
Warning: Permanently added '[us-central1-ssh-serialport.googleapis.com]:9600' (ECDSA) to the list of known hosts.
UEFI firmware (version built at 09:00:00 on Jan 10 2025)
EMU Variable FVB Started
EMU Variable invalid PCD sizes
Found PL031 RTC @ 0x9010000
InitializeRealTimeClock: using default timezone/daylight settings
^[[2J^[[01;01H^[[=3h^[[2J^[[01;01H^[[2J^[[01;01H^[[=3h^[[2J^[[01;01HBdsDxe: loading Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
BdsDxe: starting Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
UEFI: Attempting to start image.
Description: UEFI Misc Device
FilePath: PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
OptionNumber: 1.
Booting `syzkaller'
UEFI firmware (version built at 09:00:00 on Jan 10 2025)
EMU Variable FVB Started
EMU Variable invalid PCD sizes
Found PL031 RTC @ 0x9010000
InitializeRealTimeClock: using default timezone/daylight settings
^[[2J^[[01;01H^[[=3h^[[2J^[[01;01H^[[2J^[[01;01H^[[=3h^[[2J^[[01;01HBdsDxe: loading Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
BdsDxe: starting Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
UEFI: Attempting to start image.
Description: UEFI Misc Device
FilePath: PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
OptionNumber: 1.
Booting `syzkaller'
UEFI firmware (version built at 09:00:00 on Jan 10 2025)
EMU Variable FVB Started
EMU Variable invalid PCD sizes
Found PL031 RTC @ 0x9010000
InitializeRealTimeClock: using default timezone/daylight settings
^[[2J^[[01;01H^[[=3h^[[2J^[[01;01H^[[2J^[[01;01H^[[=3h^[[2J^[[01;01HBdsDxe: loading Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
BdsDxe: starting Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
UEFI: Attempting to start image.
Description: UEFI Misc Device
FilePath: PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
OptionNumber: 1.
Booting `syzkaller'
UEFI firmware (version built at 09:00:00 on Jan 10 2025)
EMU Variable FVB Started
EMU Variable invalid PCD sizes
Found PL031 RTC @ 0x9010000
InitializeRealTimeClock: using default timezone/daylight settings
^[[2J^[[01;01H^[[=3h^[[2J^[[01;01H^[[2J^[[01;01H^[[=3h^[[2J^[[01;01HBdsDxe: loading Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
BdsDxe: starting Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
UEFI: Attempting to start image.
Description: UEFI Misc Device
FilePath: PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
OptionNumber: 1.
Booting `syzkaller'
UEFI firmware (version built at 09:00:00 on Jan 10 2025)
EMU Variable FVB Started
EMU Variable invalid PCD sizes
Found PL031 RTC @ 0x9010000
InitializeRealTimeClock: using default timezone/daylight settings
^[[2J^[[01;01H^[[=3h^[[2J^[[01;01H^[[2J^[[01;01H^[[=3h^[[2J^[[01;01HBdsDxe: loading Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
BdsDxe: starting Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
UEFI: Attempting to start image.
Description: UEFI Misc Device
FilePath: PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
OptionNumber: 1.
Booting `syzkaller'
UEFI firmware (version built at 09:00:00 on Jan 10 2025)
EMU Variable FVB Started
EMU Variable invalid PCD sizes
Found PL031 RTC @ 0x9010000
InitializeRealTimeClock: using default timezone/daylight settings
^[[2J^[[01;01H^[[=3h^[[2J^[[01;01H^[[2J^[[01;01H^[[=3h^[[2J^[[01;01HBdsDxe: loading Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
BdsDxe: starting Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
UEFI: Attempting to start image.
Description: UEFI Misc Device
FilePath: PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
OptionNumber: 1.
Booting `syzkaller'
UEFI firmware (version built at 09:00:00 on Jan 10 2025)
EMU Variable FVB Started
EMU Variable invalid PCD sizes
Found PL031 RTC @ 0x9010000
InitializeRealTimeClock: using default timezone/daylight settings
^[[2J^[[01;01H^[[=3h^[[2J^[[01;01H^[[2J^[[01;01H^[[=3h^[[2J^[[01;01HBdsDxe: loading Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
BdsDxe: starting Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
UEFI: Attempting to start image.
Description: UEFI Misc Device
FilePath: PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
OptionNumber: 1.
Booting `syzkaller'
serialport: Connected to syzkaller.us-central1-f.ci-upstream-gce-arm64-test-job-0 port 1 (session ID: e70122d9217081b58b1e89fac32748d7c58bb332e094bd288395bea51681d062, active connections: 1).
UEFI firmware (version built at 09:00:00 on Jan 10 2025)
EMU Variable FVB Started
EMU Variable invalid PCD sizes
Found PL031 RTC @ 0x9010000
InitializeRealTimeClock: using default timezone/daylight settings
^[[2J^[[01;01H^[[=3h^[[2J^[[01;01H^[[2J^[[01;01H^[[=3h^[[2J^[[01;01HBdsDxe: loading Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
BdsDxe: starting Boot0001 "UEFI Misc Device" from PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
UEFI: Attempting to start image.
Description: UEFI Misc Device
FilePath: PciRoot(0x0)/Pci(0x2,0x0)/NVMe(0x1,00-00-00-00-00-00-00-00)
OptionNumber: 1.
Booting `syzkaller'
syzkaller build log:
go env (err=<nil>)
AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE='auto'
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build976075348=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOMODCACHE='/syzkaller/jobs/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.26.0'
GOWORK=''
PKG_CONFIG='pkg-config'
git status (err=<nil>)
HEAD detached at d168f260571
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d168f2605715ec7b7ab6840d636f69c758e424d9 -X github.com/google/syzkaller/prog.gitRevisionDate=20260511-154029" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d168f2605715ec7b7ab6840d636f69c758e424d9 -X github.com/google/syzkaller/prog.gitRevisionDate=20260511-154029" ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=arm64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d168f2605715ec7b7ab6840d636f69c758e424d9 -X github.com/google/syzkaller/prog.gitRevisionDate=20260511-154029" -o ./bin/linux_arm64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_arm64
aarch64-linux-gnu-g++ -o ./bin/linux_arm64/syz-executor executor/executor.cc \
-O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_arm64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"d168f2605715ec7b7ab6840d636f69c758e424d9\"
/usr/lib/gcc-cross/aarch64-linux-gnu/14/../../../../aarch64-linux-gnu/bin/ld: /tmp/ccXJzoBr.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x2ec): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
./tools/check-syzos.sh 2>/dev/null
Tested on:
commit: 5cbb61bf arm64/fpsimd: ptrace: zero target's fpsimd_st..
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
kernel config: https://syzkaller.appspot.com/x/.config?x=a834c6344141a58b
dashboard link: https://syzkaller.appspot.com/bug?extid=1cf303af03cf30b1275a
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
userspace arch: arm64
patch: https://syzkaller.appspot.com/x/patch.diff?x=132e9bce580000
prev parent reply other threads:[~2026-05-16 12:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-16 0:11 [syzbot] [kernel?] INFO: task hung in nsim_bus_dev_del syzbot
2026-05-16 11:04 ` Hillf Danton
2026-05-16 12:35 ` syzbot [this message]
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