Extracting prog: 8m20.25592077s
Minimizing prog: 2h1m49.74062274s
Simplifying prog options: 15m57.603834019s
Extracting C: 5m9.887102076s
Simplifying C: 0s


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: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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
r2 = getpid()
sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={<r3=>0xffffffffffffffff, <r4=>0xffffffffffffffff})
connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e)
sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0)
recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 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: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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
r2 = getpid()
sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={<r3=>0xffffffffffffffff, <r4=>0xffffffffffffffff})
connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e)
sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0)
recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0)

program did not crash
single: failed to extract reproducer
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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
r2 = getpid()
sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={<r3=>0xffffffffffffffff, <r4=>0xffffffffffffffff})
connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e)
sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0)
recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
single: successfully extracted reproducer
found reproducer with 13 syscalls
minimizing guilty program
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
r2 = getpid()
sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={<r3=>0xffffffffffffffff, <r4=>0xffffffffffffffff})
connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e)
sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
r2 = getpid()
sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={<r3=>0xffffffffffffffff})
connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
r2 = getpid()
sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200))

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
r2 = getpid()
sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd-prlimit64-sched_setscheduler-getpid-sched_setscheduler
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
r2 = getpid()
sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd-prlimit64-sched_setscheduler-getpid
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
getpid()

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd-prlimit64-sched_setscheduler
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd-prlimit64
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX])

program did not crash
testing program (duration=6m14.453879458s, {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}}): syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, 0x0, 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, 0x0)
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, 0x0)
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, 0x0, &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', 0x0, 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, 0x0)

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[])

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB, @ANYRESHEX=r0])

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB, @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program did not crash
extracting C reproducer
testing compiled C program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
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=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
extracting C reproducer
testing compiled C program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program did not crash
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
validation run: crashed=true
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
validation run: crashed=true
testing program (duration=6m14.453879458s, {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}}): openat-syz_open_procfs-syz_open_procfs-mount$9p_fd
detailed listing:
executing program 0:
openat(0xffffffffffffff9c, &(0x7f000000c380)='./file1\x00', 0x2040, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
r1 = syz_open_procfs(0x0, &(0x7f00000000c0)='fd/4\x00')
mount$9p_fd(0x0, &(0x7f0000000180)='.\x00', &(0x7f0000000040), 0x0, &(0x7f0000000200)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r1, @ANYBLOB=',wfdno=', @ANYRESHEX=r0])

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
validation run: crashed=true
reproducing took 2h44m34.292136397s
repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: wg-kex-wg0 wg_packet_handshake_send_worker
Call trace:
 dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1864/0x6800 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x6c/0xb0 kernel/locking/spinlock.c:162
 debug_object_activate+0x80/0x4b8 lib/debugobjects.c:698
 debug_timer_activate kernel/time/timer.c:782 [inline]
 __mod_timer+0x9c8/0xb48 kernel/time/timer.c:1119
 mod_timer+0x2c/0x3c kernel/time/timer.c:1190
 mod_peer_timer+0x14c/0x220 drivers/net/wireguard/timers.c:37
 wg_timers_any_authenticated_packet_traversal+0x98/0xc0 drivers/net/wireguard/timers.c:215
 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:36 [inline]
 wg_packet_handshake_send_worker+0x178/0x2d4 drivers/net/wireguard/send.c:51
 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292
 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850

final repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: wg-kex-wg0 wg_packet_handshake_send_worker
Call trace:
 dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1864/0x6800 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x6c/0xb0 kernel/locking/spinlock.c:162
 debug_object_activate+0x80/0x4b8 lib/debugobjects.c:698
 debug_timer_activate kernel/time/timer.c:782 [inline]
 __mod_timer+0x9c8/0xb48 kernel/time/timer.c:1119
 mod_timer+0x2c/0x3c kernel/time/timer.c:1190
 mod_peer_timer+0x14c/0x220 drivers/net/wireguard/timers.c:37
 wg_timers_any_authenticated_packet_traversal+0x98/0xc0 drivers/net/wireguard/timers.c:215
 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:36 [inline]
 wg_packet_handshake_send_worker+0x178/0x2d4 drivers/net/wireguard/send.c:51
 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292
 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850