Extracting prog: 2m14.021433677s
Minimizing prog: 14m47.95767503s
Simplifying prog options: 5m7.188610308s
Extracting C: 53.169271158s
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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program crashed: possible deadlock in smc_release
program crashed: possible deadlock in smc_release
single: successfully extracted reproducer
found reproducer with 8 syscalls
minimizing guilty program
testing program (duration=45.446994997s, {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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=45.446994997s, {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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
testing program (duration=45.446994997s, {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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(0xffffffffffffffff, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
testing program (duration=45.446994997s, {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}}): socket$inet6_tcp-close-socket-bind$inet6-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
testing program (duration=45.446994997s, {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}}): socket$inet6_tcp-close-socket-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
testing program (duration=45.446994997s, {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}}): socket$inet6_tcp-close-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
testing program (duration=45.446994997s, {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}}): socket$inet6_tcp-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
testing program (duration=45.446994997s, {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}}): close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
close(0xffffffffffffffff)
socket(0x2b, 0x1, 0x1)
bind$inet6(0xffffffffffffffff, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(0xffffffffffffffff, 0x0)
r0 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r0, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
testing program (duration=45.446994997s, {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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, 0x0, 0x0)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
testing program (duration=45.446994997s, {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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
testing program (duration=45.446994997s, {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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=45.446994997s, {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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
program did not crash
simplifying guilty program options
testing program (duration=45.446994997s, {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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
testing program (duration=45.446994997s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
testing program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program crashed: possible deadlock in smc_release
extracting C reproducer
testing compiled C program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
program did not crash
testing program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program crashed: possible deadlock in smc_release
validation run: crashed=true
testing program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program crashed: possible deadlock in smc_release
validation run: crashed=true
testing program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=45.446994997s, {Threaded:true 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}}): socket$inet6_tcp-close-socket-bind$inet6-listen-socket$inet_mptcp-pselect6-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
close(r0)
socket(0x2b, 0x1, 0x1)
bind$inet6(r0, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @empty}, 0x1c)
listen(r0, 0x0)
r1 = socket$inet_mptcp(0x2, 0x1, 0x106)
pselect6(0x40, &(0x7f0000000140)={0x9, 0x100000001, 0xf, 0xb, 0x9, 0x81, 0x60a82359}, 0x0, 0x0, 0x0, 0x0)
connect$inet(r1, &(0x7f0000000000)={0x2, 0x4e22, @local}, 0x10)

program crashed: possible deadlock in smc_release
validation run: crashed=true
reproducing took 36m10.936017143s
repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.17/6012 is trying to acquire lock:
ffff8880301416d8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
ffff8880301416d8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
ffff8880301416d8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: start_flush_work kernel/workqueue.c:4183 [inline]
ffff8880301416d8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: __flush_work+0xd2/0xbc0 kernel/workqueue.c:4241

but task is already holding lock:
ffff888030140260 (sk_lock-AF_SMC/1){+.+.}-{0:0}, at: smc_release+0x255/0x560 net/smc/af_smc.c:-1

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (sk_lock-AF_SMC/1){+.+.}-{0:0}:
       lock_sock_nested+0x48/0x100 net/core/sock.c:3780
       smc_listen_out+0x109/0x3e0 net/smc/af_smc.c:1924
       process_one_work kernel/workqueue.c:3257 [inline]
       process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
       worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
       kthread+0x711/0x8a0 kernel/kthread.c:463
       ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246

-> #0 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3165 [inline]
       check_prevs_add kernel/locking/lockdep.c:3284 [inline]
       validate_chain kernel/locking/lockdep.c:3908 [inline]
       __lock_acquire+0x15a6/0x2cf0 kernel/locking/lockdep.c:5237
       lock_acquire+0x117/0x340 kernel/locking/lockdep.c:5868
       touch_work_lockdep_map kernel/workqueue.c:3955 [inline]
       start_flush_work kernel/workqueue.c:4209 [inline]
       __flush_work+0x6b8/0xbc0 kernel/workqueue.c:4241
       __cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4397
       smc_clcsock_release+0x60/0xf0 net/smc/smc_close.c:29
       __smc_release+0x66b/0x7e0 net/smc/af_smc.c:304
       smc_close_non_accepted+0xd5/0x1f0 net/smc/af_smc.c:1855
       smc_close_cleanup_listen net/smc/smc_close.c:45 [inline]
       smc_close_active+0xb68/0xf10 net/smc/smc_close.c:225
       __smc_release+0x8d/0x7e0 net/smc/af_smc.c:280
       smc_release+0x2ce/0x560 net/smc/af_smc.c:347
       __sock_release net/socket.c:662 [inline]
       sock_close+0xc3/0x240 net/socket.c:1455
       __fput+0x44c/0xa70 fs/file_table.c:468
       task_work_run+0x1d4/0x260 kernel/task_work.c:233
       resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
       __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
       exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75
       __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
       syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
       syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
       syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
       do_syscall_64+0x2d0/0xf80 arch/x86/entry/syscall_64.c:100
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(sk_lock-AF_SMC/1);
                               lock((work_completion)(&new_smc->smc_listen_work));
                               lock(sk_lock-AF_SMC/1);
  lock((work_completion)(&new_smc->smc_listen_work));

 *** DEADLOCK ***

3 locks held by syz.0.17/6012:
 #0: ffff888077683b88 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline]
 #0: ffff888077683b88 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: __sock_release net/socket.c:661 [inline]
 #0: ffff888077683b88 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: sock_close+0x9b/0x240 net/socket.c:1455
 #1: ffff888030140260 (sk_lock-AF_SMC/1){+.+.}-{0:0}, at: smc_release+0x255/0x560 net/smc/af_smc.c:-1
 #2: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #2: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
 #2: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: start_flush_work kernel/workqueue.c:4183 [inline]
 #2: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: __flush_work+0xd2/0xbc0 kernel/workqueue.c:4241

stack backtrace:
CPU: 0 UID: 0 PID: 6012 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_circular_bug+0x2e2/0x300 kernel/locking/lockdep.c:2043
 check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175
 check_prev_add kernel/locking/lockdep.c:3165 [inline]
 check_prevs_add kernel/locking/lockdep.c:3284 [inline]
 validate_chain kernel/locking/lockdep.c:3908 [inline]
 __lock_acquire+0x15a6/0x2cf0 kernel/locking/lockdep.c:5237
 lock_acquire+0x117/0x340 kernel/locking/lockdep.c:5868
 touch_work_lockdep_map kernel/workqueue.c:3955 [inline]
 start_flush_work kernel/workqueue.c:4209 [inline]
 __flush_work+0x6b8/0xbc0 kernel/workqueue.c:4241
 __cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4397
 smc_clcsock_release+0x60/0xf0 net/smc/smc_close.c:29
 __smc_release+0x66b/0x7e0 net/smc/af_smc.c:304
 smc_close_non_accepted+0xd5/0x1f0 net/smc/af_smc.c:1855
 smc_close_cleanup_listen net/smc/smc_close.c:45 [inline]
 smc_close_active+0xb68/0xf10 net/smc/smc_close.c:225
 __smc_release+0x8d/0x7e0 net/smc/af_smc.c:280
 smc_release+0x2ce/0x560 net/smc/af_smc.c:347
 __sock_release net/socket.c:662 [inline]
 sock_close+0xc3/0x240 net/socket.c:1455
 __fput+0x44c/0xa70 fs/file_table.c:468
 task_work_run+0x1d4/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
 exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2d0/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f562238f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc3248f5e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000015260 RCX: 00007f562238f749
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f56225e7da0 R08: 0000000000000001 R09: 000000083248f8df
R10: 0000001b2f620000 R11: 0000000000000246 R12: 00007f56225e609c
R13: 00007f56225e6090 R14: ffffffffffffffff R15: 00007ffc3248f700
 </TASK>

final repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.17/6012 is trying to acquire lock:
ffff8880301416d8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
ffff8880301416d8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
ffff8880301416d8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: start_flush_work kernel/workqueue.c:4183 [inline]
ffff8880301416d8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: __flush_work+0xd2/0xbc0 kernel/workqueue.c:4241

but task is already holding lock:
ffff888030140260 (sk_lock-AF_SMC/1){+.+.}-{0:0}, at: smc_release+0x255/0x560 net/smc/af_smc.c:-1

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (sk_lock-AF_SMC/1){+.+.}-{0:0}:
       lock_sock_nested+0x48/0x100 net/core/sock.c:3780
       smc_listen_out+0x109/0x3e0 net/smc/af_smc.c:1924
       process_one_work kernel/workqueue.c:3257 [inline]
       process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
       worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
       kthread+0x711/0x8a0 kernel/kthread.c:463
       ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246

-> #0 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3165 [inline]
       check_prevs_add kernel/locking/lockdep.c:3284 [inline]
       validate_chain kernel/locking/lockdep.c:3908 [inline]
       __lock_acquire+0x15a6/0x2cf0 kernel/locking/lockdep.c:5237
       lock_acquire+0x117/0x340 kernel/locking/lockdep.c:5868
       touch_work_lockdep_map kernel/workqueue.c:3955 [inline]
       start_flush_work kernel/workqueue.c:4209 [inline]
       __flush_work+0x6b8/0xbc0 kernel/workqueue.c:4241
       __cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4397
       smc_clcsock_release+0x60/0xf0 net/smc/smc_close.c:29
       __smc_release+0x66b/0x7e0 net/smc/af_smc.c:304
       smc_close_non_accepted+0xd5/0x1f0 net/smc/af_smc.c:1855
       smc_close_cleanup_listen net/smc/smc_close.c:45 [inline]
       smc_close_active+0xb68/0xf10 net/smc/smc_close.c:225
       __smc_release+0x8d/0x7e0 net/smc/af_smc.c:280
       smc_release+0x2ce/0x560 net/smc/af_smc.c:347
       __sock_release net/socket.c:662 [inline]
       sock_close+0xc3/0x240 net/socket.c:1455
       __fput+0x44c/0xa70 fs/file_table.c:468
       task_work_run+0x1d4/0x260 kernel/task_work.c:233
       resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
       __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
       exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75
       __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
       syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
       syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
       syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
       do_syscall_64+0x2d0/0xf80 arch/x86/entry/syscall_64.c:100
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(sk_lock-AF_SMC/1);
                               lock((work_completion)(&new_smc->smc_listen_work));
                               lock(sk_lock-AF_SMC/1);
  lock((work_completion)(&new_smc->smc_listen_work));

 *** DEADLOCK ***

3 locks held by syz.0.17/6012:
 #0: ffff888077683b88 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline]
 #0: ffff888077683b88 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: __sock_release net/socket.c:661 [inline]
 #0: ffff888077683b88 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: sock_close+0x9b/0x240 net/socket.c:1455
 #1: ffff888030140260 (sk_lock-AF_SMC/1){+.+.}-{0:0}, at: smc_release+0x255/0x560 net/smc/af_smc.c:-1
 #2: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #2: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
 #2: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: start_flush_work kernel/workqueue.c:4183 [inline]
 #2: ffffffff8df41a20 (rcu_read_lock){....}-{1:3}, at: __flush_work+0xd2/0xbc0 kernel/workqueue.c:4241

stack backtrace:
CPU: 0 UID: 0 PID: 6012 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_circular_bug+0x2e2/0x300 kernel/locking/lockdep.c:2043
 check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175
 check_prev_add kernel/locking/lockdep.c:3165 [inline]
 check_prevs_add kernel/locking/lockdep.c:3284 [inline]
 validate_chain kernel/locking/lockdep.c:3908 [inline]
 __lock_acquire+0x15a6/0x2cf0 kernel/locking/lockdep.c:5237
 lock_acquire+0x117/0x340 kernel/locking/lockdep.c:5868
 touch_work_lockdep_map kernel/workqueue.c:3955 [inline]
 start_flush_work kernel/workqueue.c:4209 [inline]
 __flush_work+0x6b8/0xbc0 kernel/workqueue.c:4241
 __cancel_work_sync+0xbe/0x110 kernel/workqueue.c:4397
 smc_clcsock_release+0x60/0xf0 net/smc/smc_close.c:29
 __smc_release+0x66b/0x7e0 net/smc/af_smc.c:304
 smc_close_non_accepted+0xd5/0x1f0 net/smc/af_smc.c:1855
 smc_close_cleanup_listen net/smc/smc_close.c:45 [inline]
 smc_close_active+0xb68/0xf10 net/smc/smc_close.c:225
 __smc_release+0x8d/0x7e0 net/smc/af_smc.c:280
 smc_release+0x2ce/0x560 net/smc/af_smc.c:347
 __sock_release net/socket.c:662 [inline]
 sock_close+0xc3/0x240 net/socket.c:1455
 __fput+0x44c/0xa70 fs/file_table.c:468
 task_work_run+0x1d4/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
 exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2d0/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f562238f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc3248f5e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000015260 RCX: 00007f562238f749
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f56225e7da0 R08: 0000000000000001 R09: 000000083248f8df
R10: 0000001b2f620000 R11: 0000000000000246 R12: 00007f56225e609c
R13: 00007f56225e6090 R14: ffffffffffffffff R15: 00007ffc3248f700
 </TASK>