Extracting prog: 3m7.737179255s
Minimizing prog: 20m42.794513803s
Simplifying prog options: 0s
Extracting C: 37.704212023s
Simplifying C: 10m9.430577753s


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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

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: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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program crashed: WARNING in dlm_lowcomms_close
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)

program did not crash
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program did not crash
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program did not crash
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program did not crash
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program did not crash
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program did not crash
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program did not crash
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program did not crash
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program did not crash
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program did not crash
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, 0x0, 0x200)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
program crashed: WARNING in dlm_lowcomms_close
simplifying C reproducer
testing compiled C program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
program crashed: WARNING in dlm_lowcomms_close
testing compiled C program (duration=1m29.683602664s, {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}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
program crashed: WARNING in dlm_lowcomms_close
testing compiled C program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
program crashed: WARNING in dlm_lowcomms_close
testing compiled C program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
program crashed: WARNING in dlm_lowcomms_close
testing compiled C program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
program crashed: WARNING in dlm_lowcomms_close
testing compiled C program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
program crashed: WARNING in dlm_lowcomms_close
testing compiled C program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
program crashed: WARNING in dlm_lowcomms_close
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program crashed: WARNING in dlm_lowcomms_close
validation run: crashed=true
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program crashed: WARNING in dlm_lowcomms_close
validation run: crashed=true
testing program (duration=1m29.683602664s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config/dlm/cluster\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/dlm/cluster/comms/1\x00', 0x200)

program crashed: WARNING in dlm_lowcomms_close
validation run: crashed=true
reproducing took 41m3.86308011s
repro crashed as (corrupted=false):
dlm: closing connection to node 1
------------[ cut here ]------------
!con
WARNING: fs/dlm/lowcomms.c:1453 at dlm_lowcomms_close+0x12d/0x440 fs/dlm/lowcomms.c:1453, CPU#0: syz.0.17/5843
Modules linked in:
CPU: 0 UID: 0 PID: 5843 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:dlm_lowcomms_close+0x12d/0x440 fs/dlm/lowcomms.c:1453
Code: a9 a4 a0 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 82 75 17 01 eb a2 e8 8b a4 a0 00 eb 05 e8 84 a4 a0 00 90 <0f> 0b 90 44 89 f7 e8 d8 d1 61 01 b8 fe ff ff ff 48 83 c4 20 5b 41
RSP: 0018:ffffc90003a87c40 EFLAGS: 00010293
RAX: ffffffff812885e5 RBX: 0000000000000001 RCX: ffff8880329fbe80
RDX: 0000000000000000 RSI: ffffffff8ea4b2ee RDI: ffffffff8c8fe680
RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff98084410
R10: 000000007fd6d6a8 R11: 00000000bbd7c2ff R12: 0000000000000000
R13: ffffffff81288518 R14: 0000000000000000 R15: 0000000000000000
FS:  000055558a55f500(0000) GS:ffff8881233d1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f49eea71220 CR3: 0000000024286000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 drop_comm+0x61/0x190 fs/dlm/config.c:582
 client_drop_item fs/configfs/dir.c:979 [inline]
 configfs_rmdir+0x85f/0x950 fs/configfs/dir.c:1576
 vfs_rmdir+0x3e6/0x6a0 fs/namei.c:5527
 filename_rmdir+0x292/0x520 fs/namei.c:5584
 __do_sys_unlinkat fs/namei.c:5759 [inline]
 __se_sys_unlinkat+0x71/0x1a0 fs/namei.c:5752
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f49eeb9f559
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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffff6125fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007f49eee25fa0 RCX: 00007f49eeb9f559
RDX: 0000000000000200 RSI: 00002000000001c0 RDI: ffffffffffffff9c
RBP: 00007f49eec36b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f49eee25fac R14: 00007f49eee25fa0 R15: 00007f49eee25fa0
 </TASK>

final repro crashed as (corrupted=false):
dlm: closing connection to node 1
------------[ cut here ]------------
!con
WARNING: fs/dlm/lowcomms.c:1453 at dlm_lowcomms_close+0x12d/0x440 fs/dlm/lowcomms.c:1453, CPU#0: syz.0.17/5843
Modules linked in:
CPU: 0 UID: 0 PID: 5843 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:dlm_lowcomms_close+0x12d/0x440 fs/dlm/lowcomms.c:1453
Code: a9 a4 a0 00 eb a6 44 89 e1 80 e1 07 80 c1 03 38 c1 7c ac 4c 89 e7 e8 82 75 17 01 eb a2 e8 8b a4 a0 00 eb 05 e8 84 a4 a0 00 90 <0f> 0b 90 44 89 f7 e8 d8 d1 61 01 b8 fe ff ff ff 48 83 c4 20 5b 41
RSP: 0018:ffffc90003a87c40 EFLAGS: 00010293
RAX: ffffffff812885e5 RBX: 0000000000000001 RCX: ffff8880329fbe80
RDX: 0000000000000000 RSI: ffffffff8ea4b2ee RDI: ffffffff8c8fe680
RBP: dffffc0000000000 R08: 0000000000000004 R09: ffffffff98084410
R10: 000000007fd6d6a8 R11: 00000000bbd7c2ff R12: 0000000000000000
R13: ffffffff81288518 R14: 0000000000000000 R15: 0000000000000000
FS:  000055558a55f500(0000) GS:ffff8881233d1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f49eea71220 CR3: 0000000024286000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 drop_comm+0x61/0x190 fs/dlm/config.c:582
 client_drop_item fs/configfs/dir.c:979 [inline]
 configfs_rmdir+0x85f/0x950 fs/configfs/dir.c:1576
 vfs_rmdir+0x3e6/0x6a0 fs/namei.c:5527
 filename_rmdir+0x292/0x520 fs/namei.c:5584
 __do_sys_unlinkat fs/namei.c:5759 [inline]
 __se_sys_unlinkat+0x71/0x1a0 fs/namei.c:5752
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f49eeb9f559
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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffff6125fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007f49eee25fa0 RCX: 00007f49eeb9f559
RDX: 0000000000000200 RSI: 00002000000001c0 RDI: ffffffffffffff9c
RBP: 00007f49eec36b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f49eee25fac R14: 00007f49eee25fa0 R15: 00007f49eee25fa0
 </TASK>