assert failed: l->l_syncobj == sobj [ 20.2511780] panic: kernel diagnostic assertion "l->l_syncobj == sobj" failed: file "/syzkaller/jobs/netbsd/kernel/sys/kern/kern_turnstile.c", line 446 l->l_syncobj=0xffffffff86797600[sched] sobj=0xffffffff86759380[mutex] mutex_syncobj=0xffffffff86759380 rw_syncobj=0xffffffff8677e7e0 [ 20.3241718] cpu1: Begin traceback... [ 20.3541900] vpanic() at netbsd:vpanic+0x2f2 sys/kern/subr_prf.c:293 [ 20.4341861] kern_assert() at netbsd:kern_assert+0x65 sys/arch/amd64/amd64/db_disasm.c:1074 [ 20.5141833] turnstile_block() at netbsd:turnstile_block+0x1ff2 sys/kern/kern_turnstile.c:446 [ 20.5741857] mutex_enter() at netbsd:mutex_enter+0x4d5 sys/kern/kern_mutex.c:702 [ 20.6341792] kthread_exit() at netbsd:kthread_exit+0x17e sys/kern/kern_kthread.c:174 [ 20.6941743] config_mountroot_thread() at netbsd:config_mountroot_thread+0x317 sys/kern/subr_autoconf.c:522 [ 20.7141908] cpu1: End traceback... [ 20.7241610] fatal breakpoint trap in supervisor mode [ 20.7341645] trap type 1 code 0 rip 0xffffffff80221ab5 cs 0x8 rflags 0x246 cr2 0 ilevel 0x8 rsp 0xffff9880c800bd00 [ 20.7541636] curlwp 0xffffe6c47c1f2a40 pid 0.169 lowest kstack 0xffff9880c80072c0 Stopped in pid 0.169 (system) at netbsd:breakpoint+0x5: leave breakpoint() at netbsd:breakpoint+0x5 db_panic() at netbsd:db_panic+0xec sys/ddb/db_panic.c:69 vpanic() at netbsd:vpanic+0x2f2 sys/kern/subr_prf.c:293 kern_assert() at netbsd:kern_assert+0x65 sys/arch/amd64/amd64/db_disasm.c:1074 turnstile_block() at netbsd:turnstile_block+0x1ff2 sys/kern/kern_turnstile.c:446 mutex_enter() at netbsd:mutex_enter+0x4d5 sys/kern/kern_mutex.c:702 kthread_exit() at netbsd:kthread_exit+0x17e sys/kern/kern_kthread.c:174 config_mountroot_thread() at netbsd:config_mountroot_thread+0x317 sys/kern/subr_autoconf.c:522 ds bd78 es bcc0 fs bd10 gs 10 rdi 5 rsi 0 rbp ffff9880c800bd00 rbx 1 rdx ffffe6c47c1f2e50 rcx ffffffff82b6536e db_panic+0xde rax ffffffff r8 0 r9 0 r10 ffff9880c800bd90 --db_more-- failed to run ["ssh" "-p" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-i" "/syzkaller/jobs/netbsd/workdir/image/key" "root@10.128.10.35" "pwd"]: exit status 255 ssh: connect to host 10.128.10.35 port 22: Connection timed out Pseudo-terminal will not be allocated because stdin is not a terminal. Warning: Permanently added '[ssh-serialport.googleapis.com]:9600,[216.239.38.127]:9600' (RSA) to the list of known hosts. serialport: Connected to syzkaller.us-central1-c.ci2-netbsd-kubsan-test-job-test-job-1 port 1 (session ID: 8a4448ddeaf2f81272af97e8f676a048ed22dd61e7be6cb76f697cd4fb274fa8, active connections: 1). SeaBIOS (version 1.8.2-google) Total RAM Size = 0x0000000200000000 = 8192 MiB CPUs found: 2 Max CPUs supported: 2 SeaBIOS (version 1.8.2-google) Machine UUID d4d27b35-1a95-0e31-ae7e-3c149e23c3c9 found virtio-scsi at 0:3 virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0 virtio-scsi blksize=512 sectors=4194304 = 2048 MiB drive 0x000f2700: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304 Sending Seabios boot VM event. Booting from Hard Disk 0... >> NetBSD/x86 BIOS Boot, Revision 5.11 (Thu Jun 11 19:20:47 UTC 2020) (from NetBSD 9.99.65) >> Memory: 639/3144640 k 1. Boot normally 2. Boot single user 3. Drop to boot prompt Choose an option; RETURN for default; SPACE to stop countdown. Option 1 will be chosen in 5 seconds. 4 seconds. 3 seconds. 2 seconds. 1 seconds. 0 seconds. 0 seconds. command(s): rndseed /var/db/entropy-file;boot default boot twice, skipping... 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[1545312-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|+1151811/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|]=0x6e93258 /-\|/-\|/-\|/-\|/-\|/-\|Loading /var/db/entropy-file [ 1.0000000] cpu_rng: rdrand/rdseed [ 1.0000000] entropy: ready [ 1.0000000] entropy: entering seed from bootloader with 256 bits of entropy [ 1.0000000] ksyms: checking .text [ 1.0000000] ksyms: checking .rodata.hotpatch [ 1.0000000] ksyms: checking .rodata [ 1.0000000] ksyms: checking .eh_frame [ 1.0000000] ksyms: checking link_set_x86_hotpatch_descriptors [ 1.0000000] ksyms: checking link_set_sdt_argtypes_set [ 1.0000000] ksyms: checking link_set_sdt_probes_set [ 1.0000000] ksyms: checking link_set_sdt_providers_set [ 1.0000000] ksyms: checking link_set_modules [ 1.0000000] ksyms: checking link_set_sysctl_funcs [ 1.0000000] ksyms: checking link_set_acpi_device_calls [ 1.0000000] ksyms: checking link_set_evcnts [ 1.0000000] ksyms: checking link_set_linux_module_param_desc [ 1.0000000] ksyms: checking link_set_linux_module_param_info [ 1.0000000] ksyms: checking link_set_domains [ 1.0000000] ksyms: checking link_set_ieee80211_funcs [ 1.0000000] ksyms: checking link_set_ah_chips [ 1.0000000] ksyms: checking link_set_ah_rfs [ 1.0000000] ksyms: checking link_set_dkwedge_methods [ 1.0000000] ksyms: checking link_set_prop_linkpools [ 1.0000000] ksyms: checking .data [ 1.0000000] ksyms: checking .data.cacheline_aligned [ 1.0000000] ksyms: checking .data.read_mostly [ 1.0000000] ksyms: checking .bss [ 1.0000000] ksyms: checking .note.netbsd.ident [ 1.0000000] ksyms: checking .note.Xen [ 1.0000000] ksyms: checking .ident [ 1.0000000] ksyms: checking .comment [ 1.0000000] ksyms: checking .gnu_debuglink [ 1.0000000] ksyms: checking .symtab [ 1.0000000] ksyms: checking .strtab [ 1.0000000] ksyms: checking .shstrtab [ 1.0000000] Loaded initial symtab at 0xffffffff86e00ab0, strtab at 0xffffffff86f79f10, # entries 64388 [ 1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, [ 1.0000000] 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, [ 1.0000000] 2018, 2019, 2020, 2021, 2022 [ 1.0000000] The NetBSD Foundation, Inc. All rights reserved. [ 1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993 [ 1.0000000] The Regents of the University of California. All rights reserved. [ 1.0000000] NetBSD 9.99.98 (GENERIC_SYZKALLER) #0: Wed Jun 29 18:47:23 UTC 2022 [ 1.0000000] root@ci2:/syzkaller/jobs/netbsd/kernel/sys/arch/amd64/compile/obj/GENERIC_SYZKALLER [ 1.0000000] total memory = 8191 MB [ 1.0000000] avail memory = 7829 MB [ 1.0000030] mainbus0 (root) [ 1.0000030] ACPI: RSDP 0x00000000000F2740 000014 (v00 Google) [ 1.0000030] ACPI: RSDT 0x00000000BFFFFF90 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 1.0000030] ACPI: FACP 0x00000000BFFFF330 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 1.0000030] ACPI: DSDT 0x00000000BFFFD8C0 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 1.0000030] ACPI: FACS 0x00000000BFFFD880 000040 [ 1.0000030] ACPI: SRAT 0x00000000BFFFFE60 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 1.0000030] ACPI: APIC 0x00000000BFFFFDB0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 1.0000030] ACPI: SSDT 0x00000000BFFFF430 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 1.0000030] ACPI: WAET 0x00000000BFFFFE30 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 1.0000030] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 1.0000030] ioapic0 at mainbus0 apid 0 [ 1.0000030] cpu0 at mainbus0 apid 0 [ 1.0000030] cpu0: Intel(R) Xeon(R) CPU @ 2.20GHz, id 0x406f0 [ 1.0000030] cpu0: node 0, package 0, core 0, smt 0 [ 1.0000030] cpu1 at mainbus0 apid 1 [ 1.0000030] cpu1: Intel(R) Xeon(R) CPU @ 2.20GHz, id 0x406f0 [ 1.0000030] cpu1: node 0, package 0, core 0, smt 1 [ 1.0000030] acpi0 at mainbus0: Intel ACPICA 20211217 [ 1.0000030] acpi0: fixed power button present [ 1.0000030] acpi0: fixed sleep button present [ 1.0274095] pckbc1 at acpi0 (KBD, PNP0303) (kbd port): io 0x60,0x64 irq 1 [ 1.0274095] pckbc2 at acpi0 (MOU, PNP0F13) (aux port): irq 12 [ 1.0274095] com0 at acpi0 (COM1, PNP0501-1): io 0x3f8-0x3ff irq 4 [ 1.0274095] com0: ns16550a, 16-byte FIFO [ 1.0274095] com0: console [ 1.0274095] com1 at acpi0 (COM2, PNP0501-2): io 0x2f8-0x2ff irq 3 [ 1.0274095] com1: ns16550a, 16-byte FIFO [ 1.0274095] com2 at acpi0 (COM3, PNP0501-3): io 0x3e8-0x3ef irq 6 [ 1.0274095] com2: ns16550a, 16-byte FIFO [ 1.0274095] com3 at acpi0 (COM4, PNP0501-4): io 0x2e8-0x2ef irq 7 [ 1.0274095] com3: ns16550a, 16-byte FIFO [ 1.0274095] PEVT (QEMU0001) at acpi0 not configured [ 1.0274095] ACPI: Enabled 16 GPEs in block 00 to 0F [ 1.0274095] pckbd0 at pckbc1 (kbd slot) [ 1.0274095] pckbc1: using irq 1 for kbd slot [ 1.0274095] wskbd0 at pckbd0 mux 1 [ 1.0274095] pms0 at pckbc1 (aux slot) [ 1.0274095] pckbc1: using irq 12 for aux slot [ 1.0274095] wsmouse0 at pms0 mux 0 [ 1.0274095] pci0 at mainbus0 bus 0: configuration mode 1 [ 1.0274095] pchb0 at pci0 dev 0 function 0: Intel 82441FX (PMC) PCI and Memory Controller (rev. 0x02) [ 1.0274095] pcib0 at pci0 dev 1 function 0: Intel 82371AB (PIIX4) PCI-ISA Bridge (rev. 0x03) [ 1.0274095] piixpm0 at pci0 dev 1 function 3: Intel 82371AB (PIIX4) Power Management Controller (rev. 0x03) [ 1.0274095] piixpm0: SMBus disabled [ 1.0274095] virtio0 at pci0 dev 3 function 0 [ 1.0274095] virtio0: SCSI device (rev. 0x00) [ 1.0274095] vioscsi0 at virtio0: features: 0 [ 1.0274095] vioscsi0: cmd_per_lun 256 qsize 8192 seg_max 64 max_target 253 max_lun 1 [ 1.0274095] virtio0: config interrupting at msix0 vec 0 [ 1.0274095] virtio0: queues interrupting at msix0 vec 1 [ 1.0274095] scsibus0 at vioscsi0: 254 targets, 2 luns per target [ 1.0274095] virtio1 at pci0 dev 4 function 0 [ 1.0274095] virtio1: network device (rev. 0x00) [ 1.0274095] vioif0 at virtio1: features: 0x20030020 [ 1.0274095] vioif0: Ethernet address 42:01:0a:80:0a:23 [ 1.0274095] virtio1: config interrupting at msix1 vec 0 [ 1.0274095] virtio1: queues interrupting at msix1 vec 1 [ 1.0274095] genfb0 at pci0 dev 5 function 0: vendor 1ae0 product a002 (rev. 0x01) [ 1.0274095] virtio2 at pci0 dev 6 function 0 [ 1.0274095] virtio2: memory balloon device (rev. 0x00) [ 1.0274095] viomb0 at virtio2: features: 0x1 [ 1.0274095] virtio2: interrupting at ioapic0 pin 10 [ 1.0274095] virtio3 at pci0 dev 7 function 0 [ 1.0274095] virtio3: entropy device (rev. 0x00) [ 1.0274095] viornd0 at virtio3: features: 0 [ 1.0274095] virtio3: interrupting at ioapic0 pin 11 [ 1.0274095] isa0 at pcib0 [ 1.0274095] attimer0 at isa0 port 0x40-0x43 [ 1.0274095] pcppi0 at isa0 port 0x61 [ 1.0274095] spkr0 at pcppi0: PC Speaker [ 1.0274095] wsbell at spkr0 not configured [ 1.0274095] midi0 at pcppi0: PC speaker [ 1.0274095] sysbeep0 at pcppi0 [ 1.0274095] attimer0: attached to pcppi0 [ 1.0274095] acpicpu0 at cpu0: ACPI CPU [ 1.0274095] acpicpu1 at cpu1: ACPI CPU [ 1.0274095] cpu0 has 2 core siblings: cpu1 cpu0 [ 1.0274095] cpu0 has 2 pkg siblings: cpu1 cpu0 [ 1.0274095] cpu0 has 1 1st siblings: cpu0 [ 1.0274095] cpu0 first in package: cpu0 [ 1.0274095] cpu1 has 2 core siblings: cpu0 cpu1 [ 1.0274095] cpu1 has 2 pkg siblings: cpu0 cpu1 [ 1.0274095] cpu1 has 1 1st siblings: cpu0 [ 1.0274095] cpu1 first in package: cpu0 [ 1.4265522] sd0 at scsibus0 target 1 lun 0: disk fixed [ 1.6031048] sd0: fabricating a geometry [ 1.6031048] sd0: 2048 MB, 2048 cyl, 64 head, 32 sec, 512 bytes/sect x 4194304 sectors [ 1.8479217] sd0: fabricating a geometry [ 2.2114641] dk0 at sd0: "49b813d1-8009-4c4f-b3e1-2cc288366ecc", 2097085 blocks at 64, type: ffs [ 2.2556969] dk1 at sd0: "2a5f9479-33b7-499d-8cc4-f8d9ae0937b7", 2097119 blocks at 2097152, type: swap [ 2.2556969] sd0: async, 8-bit transfers, tagged queueing [ 10.9844341] usb0 at vhci0: USB revision 2.0 [ 11.0644511] uhub0 at usb0: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1 [ 12.1144117] usb1 at vhci1: USB revision 2.0 [ 12.1843909] uhub1 at usb1: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1 [ 13.2143625] usb2 at vhci2: USB revision 2.0 [ 13.2856332] uhub2 at usb2: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1 [ 14.3243307] usb3 at vhci3: USB revision 2.0 [ 14.4243234] uhub3 at usb3: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1 [ 15.4643051] usb4 at vhci4: USB revision 2.0 [ 15.5557006] uhub4 at usb4: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1 [ 16.6242700] usb5 at vhci5: USB revision 2.0 [ 16.7168294] uhub5 at usb5: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1 [ 17.7642577] usb6 at vhci6: USB revision 2.0 [ 17.8642334] uhub6 at usb6: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1 [ 18.9142051] usb7 at vhci7: USB revision 2.0 [ 19.0142049] uhub7 at usb7: NetBSD (0x0000) VHCI root hub (0x0000), class 9/0, rev 2.00/1.00, addr 1 [ 19.6858944] boot device: sd0 [ 19.6944602] root on dk0 dumps on dk1 [ 19.8054593] dump_misc_init: max_paddr = 0x240000000 [ 19.8683408] mountroot: trying lfs... [ 19.9142144] mountroot: trying ffs... [ 20.0042096] root file system type: ffs [ 20.0447627] kern.module.path=/stand/amd64/9.99.98/modules [ 20.0825358] clock: unknown CMOS layout [ 20.2511780] panic: kernel diagnostic assertion "l->l_syncobj == sobj" failed: file "/syzkaller/jobs/netbsd/kernel/sys/kern/kern_turnstile.c", line 446 l->l_syncobj=0xffffffff86797600[sched] sobj=0xffffffff86759380[mutex] mutex_syncobj=0xffffffff86759380 rw_syncobj=0xffffffff8677e7e0 [ 20.3241718] cpu1: Begin traceback... [ 20.3541900] vpanic() at netbsd:vpanic+0x2f2 [ 20.4341861] kern_assert() at netbsd:kern_assert+0x65 [ 20.5141833] turnstile_block() at netbsd:turnstile_block+0x1ff2 [ 20.5741857] mutex_enter() at netbsd:mutex_enter+0x4d5 [ 20.6341792] kthread_exit() at netbsd:kthread_exit+0x17e [ 20.6941743] config_mountroot_thread() at netbsd:config_mountroot_thread+0x317 [ 20.7141908] cpu1: End traceback... [ 20.7241610] fatal breakpoint trap in supervisor mode [ 20.7341645] trap type 1 code 0 rip 0xffffffff80221ab5 cs 0x8 rflags 0x246 cr2 0 ilevel 0x8 rsp 0xffff9880c800bd00 [ 20.7541636] curlwp 0xffffe6c47c1f2a40 pid 0.169 lowest kstack 0xffff9880c80072c0 Stopped in pid 0.169 (system) at netbsd:breakpoint+0x5: leave breakpoint() at netbsd:breakpoint+0x5 db_panic() at netbsd:db_panic+0xec vpanic() at netbsd:vpanic+0x2f2 kern_assert() at netbsd:kern_assert+0x65 turnstile_block() at netbsd:turnstile_block+0x1ff2 mutex_enter() at netbsd:mutex_enter+0x4d5 kthread_exit() at netbsd:kthread_exit+0x17e config_mountroot_thread() at netbsd:config_mountroot_thread+0x317 ds bd78 es bcc0 fs bd10 gs 10 rdi 5 rsi 0 rbp ffff9880c800bd00 rbx 1 rdx ffffe6c47c1f2e50 rcx ffffffff82b6536e db_panic+0xde rax ffffffff r8 0 r9 0 r10 ffff9880c800bd90 --db_more-- syzkaller build log: go env (err=) GO111MODULE="auto" GOARCH="amd64" GOBIN="" GOCACHE="/syzkaller/.cache/go-build" GOENV="/syzkaller/.config/go/env" GOEXE="" GOEXPERIMENT="" GOFLAGS="" GOHOSTARCH="amd64" GOHOSTOS="linux" GOINSECURE="" GOMODCACHE="/syzkaller/jobs/netbsd/gopath/pkg/mod" GONOPROXY="" GONOSUMDB="" GOOS="linux" GOPATH="/syzkaller/jobs/netbsd/gopath" GOPRIVATE="" GOPROXY="https://proxy.golang.org,direct" GOROOT="/usr/local/go" GOSUMDB="sum.golang.org" GOTMPDIR="" GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64" GOVCS="" GOVERSION="go1.17" GCCGO="gccgo" AR="ar" CC="gcc" CXX="g++" CGO_ENABLED="1" GOMOD="/syzkaller/jobs/netbsd/gopath/src/github.com/google/syzkaller/go.mod" CGO_CFLAGS="-g -O2" CGO_CPPFLAGS="" CGO_CXXFLAGS="-g -O2" CGO_FFLAGS="-g -O2" CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build1263012787=/tmp/go-build -gno-record-gcc-switches" git status (err=) HEAD detached at a371c43c3 nothing to commit, working tree clean go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen make .descriptions bin/syz-sysgen touch .descriptions GOOS=netbsd GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a371c43c33b6f901421f93b655442363c072d251 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220624-125309'" "-tags=syz_target syz_os_netbsd syz_arch_amd64 " -o ./bin/netbsd_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer GOOS=netbsd GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a371c43c33b6f901421f93b655442363c072d251 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220624-125309'" "-tags=syz_target syz_os_netbsd syz_arch_amd64 " -o ./bin/netbsd_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog GOOS=netbsd GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a371c43c33b6f901421f93b655442363c072d251 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220624-125309'" "-tags=syz_target syz_os_netbsd syz_arch_amd64 " -o ./bin/netbsd_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress mkdir -p ./bin/netbsd_amd64 /syzkaller/shared/netbsd/tools/bin/x86_64--netbsd-g++ -o ./bin/netbsd_amd64/syz-executor executor/executor.cc \ -m64 --sysroot /syzkaller/shared/netbsd/dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384 -fpermissive -w -DGOOS_netbsd=1 -DGOARCH_amd64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"a371c43c33b6f901421f93b655442363c072d251\"