Extracting prog: 8m0.160646919s
Minimizing prog: 1h22m22.493198296s
Simplifying prog options: 15m41.028191962s
Extracting C: 5m12.267416625s
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r2 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r2, &(0x7f0000000180), 0x12)
write$cgroup_pid(r2, &(0x7f0000000040), 0x12)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r2 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r2, &(0x7f0000000180), 0x12)
write$cgroup_pid(r2, &(0x7f0000000040), 0x12)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
single: successfully extracted reproducer
found reproducer with 7 syscalls
minimizing guilty program
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_pid
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r1 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r1, &(0x7f0000000180), 0x12)
write$cgroup_pid(r1, &(0x7f0000000040), 0x12)

program did not crash
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r2 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r2, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program did not crash
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
write$cgroup_pid(0xffffffffffffffff, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program did not crash
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r1, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(0xffffffffffffffff, &(0x7f0000000400)='FROZEN\x00', 0x7)

program did not crash
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_freezer_state(0xffffffffffffffff, &(0x7f00000000c0), 0x2, 0x0)
r1 = openat$cgroup_procs(0xffffffffffffffff, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r1, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(r0, &(0x7f0000000400)='FROZEN\x00', 0x7)

program did not crash
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r2 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r2, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program did not crash
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, 0x0, 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r2 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r2, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program did not crash
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, 0x0, 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r2 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r2, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program did not crash
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, 0x0, 0x2, 0x0)
r2 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r2, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program did not crash
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r2 = openat$cgroup_procs(r0, 0x0, 0x2, 0x0)
write$cgroup_pid(r2, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program did not crash
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r2 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r2, 0x0, 0x0)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program did not crash
testing program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r2 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r2, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(r1, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
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=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r2 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r2, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program crashed: BUG: MAX_LOCKDEP_CHAINS too low!
extracting C reproducer
testing compiled C program (duration=6m20.151012313s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=6m20.151012313s, {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}}): mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_freezer_state-openat$cgroup_procs-write$cgroup_pid-write$cgroup_freezer_state
detailed listing:
executing program 0:
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz0\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)
r2 = openat$cgroup_procs(r0, &(0x7f00000001c0)='tasks\x00', 0x2, 0x0)
write$cgroup_pid(r2, &(0x7f0000000180), 0x12)
write$cgroup_freezer_state(r1, &(0x7f0000000400)='FROZEN\x00', 0x7)

program did not crash
reproducing took 1h51m16.337138002s
repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 4155 Comm: kworker/u5:5 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: hci54 hci_cmd_work
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 lookup_chain_cache_add kernel/locking/lockdep.c:3735 [inline]
 validate_chain kernel/locking/lockdep.c:3756 [inline]
 __lock_acquire+0x1b64/0x7638 kernel/locking/lockdep.c:5012
 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xc4/0x14c kernel/locking/spinlock.c:162
 __wake_up_common_lock kernel/sched/wait.c:137 [inline]
 __wake_up+0xe8/0x1a0 kernel/sched/wait.c:157
 vhci_send_frame+0xb4/0x10c drivers/bluetooth/hci_vhci.c:75
 hci_send_frame+0x194/0x2f0 net/bluetooth/hci_core.c:4256
 hci_cmd_work+0x17c/0x344 net/bluetooth/hci_core.c:5201
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
 worker_thread+0x910/0x1034 kernel/workqueue.c:2457
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870

final repro crashed as (corrupted=false):
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 4155 Comm: kworker/u5:5 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: hci54 hci_cmd_work
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 lookup_chain_cache_add kernel/locking/lockdep.c:3735 [inline]
 validate_chain kernel/locking/lockdep.c:3756 [inline]
 __lock_acquire+0x1b64/0x7638 kernel/locking/lockdep.c:5012
 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xc4/0x14c kernel/locking/spinlock.c:162
 __wake_up_common_lock kernel/sched/wait.c:137 [inline]
 __wake_up+0xe8/0x1a0 kernel/sched/wait.c:157
 vhci_send_frame+0xb4/0x10c drivers/bluetooth/hci_vhci.c:75
 hci_send_frame+0x194/0x2f0 net/bluetooth/hci_core.c:4256
 hci_cmd_work+0x17c/0x344 net/bluetooth/hci_core.c:5201
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
 worker_thread+0x910/0x1034 kernel/workqueue.c:2457
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870