Extracting prog: 4m38.388342777s
Minimizing prog: 17m25.945100818s
Simplifying prog options: 0s
Extracting C: 1m4.974593477s
Simplifying C: 13m37.747234703s


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:5 Slowdown:1 Sandbox:namespace 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}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
detailed listing:
executing program 0:
syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0)
r0 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r0, &(0x7f00000006c0)={0x0, 0x21, &(0x7f0000000080)={&(0x7f0000000140)=@newlink={0x3c, 0x10, 0x40d, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x4cf29}, [@IFLA_LINKINFO={0x1c, 0x12, 0x0, 0x1, @bond={{0x9}, {0xc, 0x2, 0x0, 0x1, [@IFLA_BOND_MODE={0x5, 0x1, 0x5}]}}}]}, 0x3c}, 0x1, 0x0, 0x0, 0x90}, 0x0)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
detailed listing:
executing program 0:
syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0)
r0 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r0, &(0x7f00000006c0)={0x0, 0x21, &(0x7f0000000080)={&(0x7f0000000140)=@newlink={0x3c, 0x10, 0x40d, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x4cf29}, [@IFLA_LINKINFO={0x1c, 0x12, 0x0, 0x1, @bond={{0x9}, {0xc, 0x2, 0x0, 0x1, [@IFLA_BOND_MODE={0x5, 0x1, 0x5}]}}}]}, 0x3c}, 0x1, 0x0, 0x0, 0x90}, 0x0)

program crashed: BUG: MAX_LOCKDEP_KEYS too low!
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=2m23.505235453s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_usb_control_io-socket$nl_route
detailed listing:
executing program 0:
syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0)
socket$nl_route(0x10, 0x3, 0x0)

program did not crash
testing program (duration=2m23.505235453s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_usb_control_io-sendmsg$nl_route
detailed listing:
executing program 0:
syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0)
sendmsg$nl_route(0xffffffffffffffff, &(0x7f00000006c0)={0x0, 0x21, &(0x7f0000000080)={&(0x7f0000000140)=@newlink={0x3c, 0x10, 0x40d, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x4cf29}, [@IFLA_LINKINFO={0x1c, 0x12, 0x0, 0x1, @bond={{0x9}, {0xc, 0x2, 0x0, 0x1, [@IFLA_BOND_MODE={0x5, 0x1, 0x5}]}}}]}, 0x3c}, 0x1, 0x0, 0x0, 0x90}, 0x0)

program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
testing program (duration=2m23.505235453s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$nl_route-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r0, &(0x7f00000006c0)={0x0, 0x21, &(0x7f0000000080)={&(0x7f0000000140)=@newlink={0x3c, 0x10, 0x40d, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x4cf29}, [@IFLA_LINKINFO={0x1c, 0x12, 0x0, 0x1, @bond={{0x9}, {0xc, 0x2, 0x0, 0x1, [@IFLA_BOND_MODE={0x5, 0x1, 0x5}]}}}]}, 0x3c}, 0x1, 0x0, 0x0, 0x90}, 0x0)

program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
testing program (duration=2m23.505235453s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
detailed listing:
executing program 0:
syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0)
r0 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r0, 0x0, 0x0)

program did not crash
testing program (duration=2m23.505235453s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
detailed listing:
executing program 0:
syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0)
r0 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r0, &(0x7f00000006c0)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x90}, 0x0)

program did not crash
testing program (duration=2m23.505235453s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
detailed listing:
executing program 0:
syz_usb_control_io(0xffffffffffffffff, 0x0, 0x0)
r0 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r0, &(0x7f00000006c0)={0x0, 0x0, &(0x7f0000000080)={0x0}, 0x1, 0x0, 0x0, 0x90}, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=2m23.505235453s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
simplifying C reproducer
testing compiled C program (duration=2m23.505235453s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=2m23.505235453s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:namespace 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}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=2m23.505235453s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=2m23.505235453s, {Threaded:false Repeat:true 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}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=2m23.505235453s, {Threaded:false Repeat:true 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:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=2m23.505235453s, {Threaded:false Repeat:true 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:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=2m23.505235453s, {Threaded:false Repeat:true 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:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
testing compiled C program (duration=2m23.505235453s, {Threaded:false Repeat:true 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_control_io-socket$nl_route-sendmsg$nl_route
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
reproducing took 36m47.055291006s
repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted 6.15.0-syzkaller-13526-g7a912d04415b #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events_unbound linkwatch_event
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 register_lock_class+0x2e8/0x320 kernel/locking/lockdep.c:1335
 __lock_acquire+0x99/0xd20 kernel/locking/lockdep.c:5115
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 dev_reset_queue+0xfa/0x1b0 net/sched/sch_generic.c:1310
 netdev_for_each_tx_queue include/linux/netdevice.h:2655 [inline]
 dev_deactivate_many+0x720/0xd40 net/sched/sch_generic.c:1376
 dev_deactivate+0x118/0x1b0 net/sched/sch_generic.c:1399
 linkwatch_do_dev+0x10f/0x170 net/core/link_watch.c:184
 __linkwatch_run_queue+0x56d/0x7e0 net/core/link_watch.c:244
 linkwatch_event+0x4c/0x60 net/core/link_watch.c:304
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

final repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted 6.15.0-syzkaller-13526-g7a912d04415b #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events_unbound linkwatch_event
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 register_lock_class+0x2e8/0x320 kernel/locking/lockdep.c:1335
 __lock_acquire+0x99/0xd20 kernel/locking/lockdep.c:5115
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x36/0x50 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 dev_reset_queue+0xfa/0x1b0 net/sched/sch_generic.c:1310
 netdev_for_each_tx_queue include/linux/netdevice.h:2655 [inline]
 dev_deactivate_many+0x720/0xd40 net/sched/sch_generic.c:1376
 dev_deactivate+0x118/0x1b0 net/sched/sch_generic.c:1399
 linkwatch_do_dev+0x10f/0x170 net/core/link_watch.c:184
 __linkwatch_run_queue+0x56d/0x7e0 net/core/link_watch.c:244
 linkwatch_event+0x4c/0x60 net/core/link_watch.c:304
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>