Extracting prog: 1m13.671108083s
Minimizing prog: 8m2.6362662s
Simplifying prog options: 0s
Extracting C: 18.670850472s
Simplifying C: 7m16.279659101s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x0)
writev(r0, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000038000000560000022500070019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)
r1 = socket$netlink(0x10, 0x3, 0x0)
writev(r1, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000036000000740000022500000019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)

program crashed: possible deadlock in team_device_event
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=42.845953689s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x0)
writev(r0, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000038000000560000022500070019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)
socket$netlink(0x10, 0x3, 0x0)

program did not crash
testing program (duration=42.845953689s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-writev
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x0)
writev(r0, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000038000000560000022500070019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)
writev(0xffffffffffffffff, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000036000000740000022500000019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)

program did not crash
testing program (duration=42.845953689s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-socket$netlink-writev
detailed listing:
executing program 0:
socket$netlink(0x10, 0x3, 0x0)
r0 = socket$netlink(0x10, 0x3, 0x0)
writev(r0, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000036000000740000022500000019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)

program did not crash
testing program (duration=42.845953689s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): writev-socket$netlink-writev
detailed listing:
executing program 0:
writev(0xffffffffffffffff, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000038000000560000022500070019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)
r0 = socket$netlink(0x10, 0x3, 0x0)
writev(r0, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000036000000740000022500000019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)

program did not crash
testing program (duration=42.845953689s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x0)
writev(r0, 0x0, 0x0)
r1 = socket$netlink(0x10, 0x3, 0x0)
writev(r1, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000036000000740000022500000019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)

program did not crash
testing program (duration=42.845953689s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x0)
writev(r0, &(0x7f0000000040)=[{0x0}], 0x1)
r1 = socket$netlink(0x10, 0x3, 0x0)
writev(r1, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000036000000740000022500000019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)

program did not crash
testing program (duration=42.845953689s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x0)
writev(r0, &(0x7f0000000040)=[{&(0x7f0000002840)}], 0x1)
r1 = socket$netlink(0x10, 0x3, 0x0)
writev(r1, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000036000000740000022500000019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)

program did not crash
testing program (duration=42.845953689s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x0)
writev(r0, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000038000000560000022500070019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)
r1 = socket$netlink(0x10, 0x3, 0x0)
writev(r1, 0x0, 0x0)

program did not crash
testing program (duration=42.845953689s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x0)
writev(r0, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000038000000560000022500070019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)
r1 = socket$netlink(0x10, 0x3, 0x0)
writev(r1, &(0x7f0000000040)=[{0x0}], 0x1)

program did not crash
testing program (duration=42.845953689s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x0)
writev(r0, &(0x7f0000000040)=[{&(0x7f0000002840)="3900000013000b4700bb65e1c3e4ffff0100000038000000560000022500070019000a001000000007fd17e5ffff080502000000000000000a", 0x39}], 0x1)
r1 = socket$netlink(0x10, 0x3, 0x0)
writev(r1, &(0x7f0000000040)=[{&(0x7f0000002840)}], 0x1)

program did not crash
extracting C reproducer
testing compiled C program (duration=42.845953689s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
simplifying C reproducer
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program did not crash
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program did not crash
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program did not crash
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program did not crash
testing compiled C program (duration=42.845953689s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-writev-socket$netlink-writev
program crashed: possible deadlock in team_device_event
reproducing took 16m51.257911542s
repro crashed as (corrupted=false):
netlink: 'syz-executor277': attribute type 10 has an invalid length.
veth0_vlan: left promiscuous mode
veth0_vlan: entered promiscuous mode
============================================
WARNING: possible recursive locking detected
6.12.0-syzkaller-03657-g43fb83c17ba2 #0 Not tainted
--------------------------------------------
syz-executor277/5950 is trying to acquire lock:
ffff88802d2ecd40 (team->team_lock_key){+.+.}-{4:4}, at: team_port_change_check drivers/net/team/team_core.c:2950 [inline]
ffff88802d2ecd40 (team->team_lock_key){+.+.}-{4:4}, at: team_device_event+0x2c7/0x770 drivers/net/team/team_core.c:2973

but task is already holding lock:
ffff88802d2ecd40 (team->team_lock_key){+.+.}-{4:4}, at: team_add_slave+0x9c/0x20e0 drivers/net/team/team_core.c:1975

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(team->team_lock_key);
  lock(team->team_lock_key);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

2 locks held by syz-executor277/5950:
 #0: ffffffff8feeffe8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8feeffe8 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6672
 #1: ffff88802d2ecd40 (team->team_lock_key){+.+.}-{4:4}, at: team_add_slave+0x9c/0x20e0 drivers/net/team/team_core.c:1975

stack backtrace:
CPU: 3 UID: 0 PID: 5950 Comm: syz-executor277 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_deadlock_bug+0x2e3/0x410 kernel/locking/lockdep.c:3037
 check_deadlock kernel/locking/lockdep.c:3089 [inline]
 validate_chain kernel/locking/lockdep.c:3891 [inline]
 __lock_acquire+0x2117/0x3c40 kernel/locking/lockdep.c:5226
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
 __mutex_lock_common kernel/locking/mutex.c:585 [inline]
 __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735
 team_port_change_check drivers/net/team/team_core.c:2950 [inline]
 team_device_event+0x2c7/0x770 drivers/net/team/team_core.c:2973
 notifier_call_chain+0xb9/0x410 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
 call_netdevice_notifiers net/core/dev.c:2048 [inline]
 __dev_notify_flags+0x12d/0x2e0 net/core/dev.c:8884
 dev_change_flags+0x10c/0x160 net/core/dev.c:8922
 vlan_device_event+0xdfc/0x2120 net/8021q/vlan.c:468
 notifier_call_chain+0xb9/0x410 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
 call_netdevice_notifiers net/core/dev.c:2048 [inline]
 dev_open net/core/dev.c:1517 [inline]
 dev_open+0x144/0x160 net/core/dev.c:1505
 team_port_add drivers/net/team/team_core.c:1216 [inline]
 team_add_slave+0xacd/0x20e0 drivers/net/team/team_core.c:1976
 do_set_master+0x1bc/0x230 net/core/rtnetlink.c:2730
 do_setlink+0xd24/0x41c0 net/core/rtnetlink.c:2936
 rtnl_setlink+0x28d/0x3f0 net/core/rtnetlink.c:3230
 rtnetlink_rcv_msg+0x3c7/0xea0 net/core/rtnetlink.c:6675
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2541
 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
 netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347
 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891
 sock_sendmsg_nosec net/socket.c:711 [inline]
 __sock_sendmsg net/socket.c:726 [inline]
 sock_write_iter+0x4fe/0x5b0 net/socket.c:1147
 do_iter_readv_writev+0x532/0x7f0 fs/read_write.c:820
 vfs_writev+0x363/0xdd0 fs/read_write.c:1050
 do_writev+0x297/0x340 fs/read_write.c:1096
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f745f819079
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffe4a76d28 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f745f866548 RCX: 00007f745f819079
RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007f745f866526 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000246 R12: 00007f745f8664ab
R13: 00007fffe4a76d60 R14: 00007fffe4a76d4c R15: 0000000000000003
 </TASK>

final repro crashed as (corrupted=false):
netlink: 'syz-executor277': attribute type 10 has an invalid length.
veth0_vlan: left promiscuous mode
veth0_vlan: entered promiscuous mode
============================================
WARNING: possible recursive locking detected
6.12.0-syzkaller-03657-g43fb83c17ba2 #0 Not tainted
--------------------------------------------
syz-executor277/5950 is trying to acquire lock:
ffff88802d2ecd40 (team->team_lock_key){+.+.}-{4:4}, at: team_port_change_check drivers/net/team/team_core.c:2950 [inline]
ffff88802d2ecd40 (team->team_lock_key){+.+.}-{4:4}, at: team_device_event+0x2c7/0x770 drivers/net/team/team_core.c:2973

but task is already holding lock:
ffff88802d2ecd40 (team->team_lock_key){+.+.}-{4:4}, at: team_add_slave+0x9c/0x20e0 drivers/net/team/team_core.c:1975

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(team->team_lock_key);
  lock(team->team_lock_key);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

2 locks held by syz-executor277/5950:
 #0: ffffffff8feeffe8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8feeffe8 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6672
 #1: ffff88802d2ecd40 (team->team_lock_key){+.+.}-{4:4}, at: team_add_slave+0x9c/0x20e0 drivers/net/team/team_core.c:1975

stack backtrace:
CPU: 3 UID: 0 PID: 5950 Comm: syz-executor277 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_deadlock_bug+0x2e3/0x410 kernel/locking/lockdep.c:3037
 check_deadlock kernel/locking/lockdep.c:3089 [inline]
 validate_chain kernel/locking/lockdep.c:3891 [inline]
 __lock_acquire+0x2117/0x3c40 kernel/locking/lockdep.c:5226
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
 __mutex_lock_common kernel/locking/mutex.c:585 [inline]
 __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735
 team_port_change_check drivers/net/team/team_core.c:2950 [inline]
 team_device_event+0x2c7/0x770 drivers/net/team/team_core.c:2973
 notifier_call_chain+0xb9/0x410 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
 call_netdevice_notifiers net/core/dev.c:2048 [inline]
 __dev_notify_flags+0x12d/0x2e0 net/core/dev.c:8884
 dev_change_flags+0x10c/0x160 net/core/dev.c:8922
 vlan_device_event+0xdfc/0x2120 net/8021q/vlan.c:468
 notifier_call_chain+0xb9/0x410 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:1996
 call_netdevice_notifiers_extack net/core/dev.c:2034 [inline]
 call_netdevice_notifiers net/core/dev.c:2048 [inline]
 dev_open net/core/dev.c:1517 [inline]
 dev_open+0x144/0x160 net/core/dev.c:1505
 team_port_add drivers/net/team/team_core.c:1216 [inline]
 team_add_slave+0xacd/0x20e0 drivers/net/team/team_core.c:1976
 do_set_master+0x1bc/0x230 net/core/rtnetlink.c:2730
 do_setlink+0xd24/0x41c0 net/core/rtnetlink.c:2936
 rtnl_setlink+0x28d/0x3f0 net/core/rtnetlink.c:3230
 rtnetlink_rcv_msg+0x3c7/0xea0 net/core/rtnetlink.c:6675
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2541
 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
 netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347
 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891
 sock_sendmsg_nosec net/socket.c:711 [inline]
 __sock_sendmsg net/socket.c:726 [inline]
 sock_write_iter+0x4fe/0x5b0 net/socket.c:1147
 do_iter_readv_writev+0x532/0x7f0 fs/read_write.c:820
 vfs_writev+0x363/0xdd0 fs/read_write.c:1050
 do_writev+0x297/0x340 fs/read_write.c:1096
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f745f819079
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffe4a76d28 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f745f866548 RCX: 00007f745f819079
RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007f745f866526 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000246 R12: 00007f745f8664ab
R13: 00007fffe4a76d60 R14: 00007fffe4a76d4c R15: 0000000000000003
 </TASK>