Internal error in sys_mount cgroup: Unknown subsys name 'net' Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4057 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc) pc : copy_mount_options fs/namespace.c:3255 [inline] pc : __do_sys_mount fs/namespace.c:3580 [inline] pc : __se_sys_mount fs/namespace.c:3562 [inline] pc : __arm64_sys_mount+0x2f0/0x5f8 fs/namespace.c:3562 lr : copy_mount_options fs/namespace.c:3255 [inline] lr : __do_sys_mount fs/namespace.c:3580 [inline] lr : __se_sys_mount fs/namespace.c:3562 [inline] lr : __arm64_sys_mount+0x2cc/0x5f8 fs/namespace.c:3562 sp : ffff80001ea57c80 x29: ffff80001ea57d20 x28: 0000000000400100 x27: 00000000fffffff2 x26: 0000000000000f7f x25: 0000000000000000 x24: 0000ffffc4d37081 x23: ffff0000db1ce000 x22: 0000ffffc4d38000 x21: dfff800000000000 x20: 00000000ffffff7f x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: ffff800008979fbc x15: 0000000000000000 x14: 0000000000000000 x13: 1ffff0000287402b x12: 0000000097863b1e x11: ff80800008979f98 x10: 0000ffffffffffff x9 : 0000ffffc4d38000 x8 : 0000ffffc4d38000 x7 : ffff800008762ed0 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001 x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000 Call trace: copy_mount_options fs/namespace.c:3255 [inline] __do_sys_mount fs/namespace.c:3580 [inline] __se_sys_mount fs/namespace.c:3562 [inline] __arm64_sys_mount+0x2f0/0x5f8 fs/namespace.c:3562 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x28c arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x5c/0x140 arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: d503229f 2a1903fb 2a1903e0 38400933 (2a1b03e1) ---[ end trace 4351181262f23427 ]--- ---------------- Code disassembly (best guess): 0: d503229f csdb 4: 2a1903fb mov w27, w25 8: 2a1903e0 mov w0, w25 c: 38400933 ldtrb w19, [x9] * 10: 2a1b03e1 mov w1, w27 <-- trapping instruction Warning: Permanently added '10.128.10.27' (ED25519) to the list of known hosts. 1970/01/01 00:00:30 ignoring optional flag "type"="gce" 1970/01/01 00:00:30 parsed 1 programs [ 30.420789][ T4057] cgroup: Unknown subsys name 'net' [ 30.478512][ T4057] Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP [ 30.479860][ T4057] Modules linked in: [ 30.480551][ T4057] CPU: 0 PID: 4057 Comm: syz-executor Not tainted syzkaller #0 [ 30.481698][ T4057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 30.483637][ T4057] pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc) [ 30.485138][ T4057] pc : __arm64_sys_mount+0x2f0/0x5f8 [ 30.486131][ T4057] lr : __arm64_sys_mount+0x2cc/0x5f8 [ 30.487064][ T4057] sp : ffff80001ea57c80 [ 30.487828][ T4057] x29: ffff80001ea57d20 x28: 0000000000400100 x27: 00000000fffffff2 [ 30.489173][ T4057] x26: 0000000000000f7f x25: 0000000000000000 x24: 0000ffffc4d37081 [ 30.490549][ T4057] x23: ffff0000db1ce000 x22: 0000ffffc4d38000 x21: dfff800000000000 [ 30.491977][ T4057] x20: 00000000ffffff7f x19: 0000000000000000 x18: 0000000000000000 [ 30.493400][ T4057] x17: 0000000000000000 x16: ffff800008979fbc x15: 0000000000000000 [ 30.494811][ T4057] x14: 0000000000000000 x13: 1ffff0000287402b x12: 0000000097863b1e [ 30.496306][ T4057] x11: ff80800008979f98 x10: 0000ffffffffffff x9 : 0000ffffc4d38000 [ 30.497686][ T4057] x8 : 0000ffffc4d38000 x7 : ffff800008762ed0 x6 : 0000000000000000 [ 30.499024][ T4057] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001 [ 30.500712][ T4057] x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000 [ 30.502268][ T4057] Call trace: [ 30.502913][ T4057] __arm64_sys_mount+0x2f0/0x5f8 [ 30.503878][ T4057] invoke_syscall+0x98/0x28c [ 30.504695][ T4057] el0_svc_common+0x13c/0x258 [ 30.505514][ T4057] do_el0_svc+0x5c/0x140 [ 30.506207][ T4057] el0_svc+0x78/0x1d0 [ 30.506918][ T4057] el0t_64_sync_handler+0xcc/0xe4 [ 30.507755][ T4057] el0t_64_sync+0x1a0/0x1a4 [ 30.508609][ T4057] Code: d503229f 2a1903fb 2a1903e0 38400933 (2a1b03e1) [ 30.509852][ T4057] ---[ end trace 4351181262f23427 ]--- [ 30.712525][ T4057] Kernel panic - not syncing: Oops - BTI: Fatal exception [ 30.713748][ T4057] SMP: stopping secondary CPUs [ 30.714562][ T4057] Kernel Offset: disabled [ 30.715242][ T4057] CPU features: 0xa,000003c1,7d33ffd9 [ 30.716095][ T4057] Memory Limit: none [ 30.906931][ T4057] Rebooting in 86400 seconds.. syzkaller build log: go env (err=) 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-build1411651111=/tmp/go-build -gno-record-gcc-switches' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod' GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs-2/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=) HEAD detached at f3921d4d63f 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:32: run command via tools/syz-env for best compatibility, see: Makefile:33: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen make .descriptions tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified bin/syz-sysgen touch .descriptions GOOS=linux GOARCH=arm64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=f3921d4d63f97d1f1fb49a69ea85744bb7ef184b -X 'github.com/google/syzkaller/prog.gitRevisionDate=20230615-211610'" "-tags=syz_target syz_os_linux syz_arch_arm64 " -o ./bin/linux_arm64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer GOOS=linux GOARCH=arm64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=f3921d4d63f97d1f1fb49a69ea85744bb7ef184b -X 'github.com/google/syzkaller/prog.gitRevisionDate=20230615-211610'" "-tags=syz_target syz_os_linux syz_arch_arm64 " -o ./bin/linux_arm64/syz-execprog github.com/google/syzkaller/tools/syz-execprog GOOS=linux GOARCH=arm64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=f3921d4d63f97d1f1fb49a69ea85744bb7ef184b -X 'github.com/google/syzkaller/prog.gitRevisionDate=20230615-211610'" "-tags=syz_target syz_os_linux syz_arch_arm64 " -o ./bin/linux_arm64/syz-stress github.com/google/syzkaller/tools/syz-stress mkdir -p ./bin/linux_arm64 aarch64-linux-gnu-gcc -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 -fpermissive -w -DGOOS_linux=1 -DGOARCH_arm64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"f3921d4d63f97d1f1fb49a69ea85744bb7ef184b\"