Extracting prog: 4m30.740306093s
Minimizing prog: 1h9m7.83380103s
Simplifying prog options: 15m35.900670075s
Extracting C: 5m13.687229277s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usbip_server_init-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usbip_server_init(0x1)
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program crashed: INFO: task hung in get_bMaxPacketSize0
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usbip_server_init
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usbip_server_init(0x1)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program crashed: lost connection to test machine
ignore low priority crash: lost connection to test machine
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
bind$inet(0xffffffffffffffff, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(0xffffffffffffffff, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, 0x0, 0x0)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(0x0, &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), 0x0, &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', 0x0, 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, 0x0)
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bind$inet-listen-mount$9p_tcp-syz_usb_connect$uac3
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @empty}, 0x10)
listen(r0, 0x0)
mount$9p_tcp(&(0x7f0000000080), &(0x7f0000000680)='.\x00', &(0x7f00000006c0), 0x8010, &(0x7f00000000c0)=ANY=[@ANYBLOB='trans=tcp,port=0x0000000000004e22'])
syz_usb_connect$uac3(0x3, 0x98, 0x0, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
validation run: crashed=true
reproducing took 1h47m8.334127818s
repro crashed as (corrupted=false):
debugfs: 'hsr0' already exists in 'hsr'
Cannot create hsr debugfs directory
netdevsim netde
netdevsim netdevsim7 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 7489 Comm: syz-executor Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xf88/0x2f44 kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x368 kernel/locking/lockdep.c:5868
 down_read+0x58/0x2bc kernel/locking/rwsem.c:1568
 kernfs_find_and_get_ns+0x38/0x70 fs/kernfs/dir.c:969
 kernfs_find_and_get include/linux/kernfs.h:618 [inline]
 sysfs_remove_group+0x70/0x160 fs/sysfs/group.c:317
 netdev_queue_update_kobjects+0x4c4/0x5d0 net/core/net-sysfs.c:2055
 remove_queue_kobjects net/core/net-sysfs.c:2155 [inline]
 netdev_unregister_kobject+0x104/0x3ac net/core/net-sysfs.c:2310
 unregister_netdevice_many_notify+0x13c0/0x18d8 net/core/dev.c:12456
 unregister_netdevice_many net/core/dev.c:12484 [inline]
 unregister_netdevice_queue+0x270/0x308 net/core/dev.c:12294
 unregister_netdevice include/linux/netdevice.h:3444 [inline]
 nsim_destroy+0x234/0x5e4 drivers/net/netdevsim/netdev.c:1193
 __nsim_dev_port_del+0x134/0x1e4 drivers/net/netdevsim/dev.c:1547
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1561 [inline]
 nsim_dev_reload_destroy+0x138/0x208 drivers/net/netdevsim/dev.c:1785
 nsim_drv_remove+0x5c/0x10c drivers/net/netdevsim/dev.c:1800
 nsim_bus_remove+0x20/0x30 drivers/net/netdevsim/bus.c:427
 device_remove+0xc4/0x134 drivers/base/dd.c:619
 __device_release_driver drivers/base/dd.c:1352 [inline]
 device_release_driver_internal+0x124/0x208 drivers/base/dd.c:1375
 device_release_driver+0x28/0x38 drivers/base/dd.c:1398
 bus_remove_device+0x2d0/0x3f8 drivers/base/bus.c:657
 device_del+0x3f0/0x710 drivers/base/core.c:3895
 device_unregister+0x2c/0xf0 drivers/base/core.c:3936
 nsim_bus_dev_del+0x60/0x88 drivers/net/netdevsim/bus.c:491
 del_device_store+0x248/0x2d0 drivers/net/netdevsim/bus.c:244
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:172
 sysfs_kf_write+0xe0/0x108 fs/sysfs/file.c:142
 kernfs_fop_write_iter+0x264/0x3c0 fs/kernfs/file.c:352
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x52c/0xa14 fs/read_write.c:688
 ksys_write+0x12c/0x224 fs/read_write.c:740
 __do_sys_write fs/read_write.c:751 [inline]
 __se_sys_write fs/read_write.c:748 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:748
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
netdevsim netdevsim7 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim7 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim7 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim7 netdevsim0: renamed from eth0
8021q: adding VLAN 0 to HW filter on device netdevsim0
netdevsim netdevsim7 netdevsim1: renamed from eth1
8021q: adding VLAN 0 to HW filter on device netdevsim1
netdevsim netdevsim7 netdevsim2: renamed from eth2
8021q: adding VLAN 0 to HW filter on device netdevsim2
netdevsim netdevsim7 netdevsim3: renamed from eth3
8021q: adding VLAN 0 to HW filter on device netdevsim3
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered forwarding state
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered forwarding state
8021q: adding VLAN 0 to HW filter on device bond0
8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device batadv0
veth0_vlan: entered promiscuous mode
veth1_vlan: entered promiscuous mode
veth0_macvtap: entered promiscuous mode
veth1_macvtap: entered promiscuous mode
batman_adv: batadv0: Interface activated: batadv_slave_0
batman_adv: batadv0: Interface activated: batadv_slave_1
ieee80211 phy139: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy140: Selected rate control algorithm 'minstrel_ht'

final repro crashed as (corrupted=false):
debugfs: 'hsr0' already exists in 'hsr'
Cannot create hsr debugfs directory
netdevsim netde
netdevsim netdevsim7 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 7489 Comm: syz-executor Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xf88/0x2f44 kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x368 kernel/locking/lockdep.c:5868
 down_read+0x58/0x2bc kernel/locking/rwsem.c:1568
 kernfs_find_and_get_ns+0x38/0x70 fs/kernfs/dir.c:969
 kernfs_find_and_get include/linux/kernfs.h:618 [inline]
 sysfs_remove_group+0x70/0x160 fs/sysfs/group.c:317
 netdev_queue_update_kobjects+0x4c4/0x5d0 net/core/net-sysfs.c:2055
 remove_queue_kobjects net/core/net-sysfs.c:2155 [inline]
 netdev_unregister_kobject+0x104/0x3ac net/core/net-sysfs.c:2310
 unregister_netdevice_many_notify+0x13c0/0x18d8 net/core/dev.c:12456
 unregister_netdevice_many net/core/dev.c:12484 [inline]
 unregister_netdevice_queue+0x270/0x308 net/core/dev.c:12294
 unregister_netdevice include/linux/netdevice.h:3444 [inline]
 nsim_destroy+0x234/0x5e4 drivers/net/netdevsim/netdev.c:1193
 __nsim_dev_port_del+0x134/0x1e4 drivers/net/netdevsim/dev.c:1547
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1561 [inline]
 nsim_dev_reload_destroy+0x138/0x208 drivers/net/netdevsim/dev.c:1785
 nsim_drv_remove+0x5c/0x10c drivers/net/netdevsim/dev.c:1800
 nsim_bus_remove+0x20/0x30 drivers/net/netdevsim/bus.c:427
 device_remove+0xc4/0x134 drivers/base/dd.c:619
 __device_release_driver drivers/base/dd.c:1352 [inline]
 device_release_driver_internal+0x124/0x208 drivers/base/dd.c:1375
 device_release_driver+0x28/0x38 drivers/base/dd.c:1398
 bus_remove_device+0x2d0/0x3f8 drivers/base/bus.c:657
 device_del+0x3f0/0x710 drivers/base/core.c:3895
 device_unregister+0x2c/0xf0 drivers/base/core.c:3936
 nsim_bus_dev_del+0x60/0x88 drivers/net/netdevsim/bus.c:491
 del_device_store+0x248/0x2d0 drivers/net/netdevsim/bus.c:244
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:172
 sysfs_kf_write+0xe0/0x108 fs/sysfs/file.c:142
 kernfs_fop_write_iter+0x264/0x3c0 fs/kernfs/file.c:352
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x52c/0xa14 fs/read_write.c:688
 ksys_write+0x12c/0x224 fs/read_write.c:740
 __do_sys_write fs/read_write.c:751 [inline]
 __se_sys_write fs/read_write.c:748 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:748
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
netdevsim netdevsim7 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim7 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim7 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim7 netdevsim0: renamed from eth0
8021q: adding VLAN 0 to HW filter on device netdevsim0
netdevsim netdevsim7 netdevsim1: renamed from eth1
8021q: adding VLAN 0 to HW filter on device netdevsim1
netdevsim netdevsim7 netdevsim2: renamed from eth2
8021q: adding VLAN 0 to HW filter on device netdevsim2
netdevsim netdevsim7 netdevsim3: renamed from eth3
8021q: adding VLAN 0 to HW filter on device netdevsim3
bridge0: port 2(bridge_slave_1) entered blocking state
bridge0: port 2(bridge_slave_1) entered forwarding state
bridge0: port 1(bridge_slave_0) entered blocking state
bridge0: port 1(bridge_slave_0) entered forwarding state
8021q: adding VLAN 0 to HW filter on device bond0
8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device batadv0
veth0_vlan: entered promiscuous mode
veth1_vlan: entered promiscuous mode
veth0_macvtap: entered promiscuous mode
veth1_macvtap: entered promiscuous mode
batman_adv: batadv0: Interface activated: batadv_slave_0
batman_adv: batadv0: Interface activated: batadv_slave_1
ieee80211 phy139: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy140: Selected rate control algorithm 'minstrel_ht'