Extracting prog: 2m54.908326615s
Minimizing prog: 8m35.441953383s
Simplifying prog options: 3m39.800155472s
Extracting C: 1m8.449417861s
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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

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}}): socket$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program crashed: possible deadlock in smc_release
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
socket$inet_smc(0x2b, 0x1, 0x0)

program did not crash
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
connect$inet(0xffffffffffffffff, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
testing program (duration=58.280541328s, {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$inet_smc-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
testing program (duration=58.280541328s, {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}}): bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
bind$inet(0xffffffffffffffff, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(0xffffffffffffffff, 0x10)
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, 0x0, 0x0)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
program did not crash
simplifying guilty program options
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program crashed: possible deadlock in smc_release
validation run: crashed=true
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program crashed: possible deadlock in smc_release
validation run: crashed=true
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program did not crash
validation run: crashed=false
testing program (duration=58.280541328s, {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$inet_smc-bind$inet-listen-socket$inet_smc-connect$inet
detailed listing:
executing program 0:
r0 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)
listen(r0, 0x10)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e20, @local}, 0x10)

program crashed: possible deadlock in smc_release
validation run: crashed=true
reproducing took 26m36.220355247s
repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.1815/8628 is trying to acquire lock:
ffff0000c4e896e8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: touch_work_lockdep_map kernel/workqueue.c:4117 [inline]
ffff0000c4e896e8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: start_flush_work kernel/workqueue.c:4371 [inline]
ffff0000c4e896e8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: __flush_work+0x58c/0xa24 kernel/workqueue.c:4403

but task is already holding lock:
ffff0000c6491b60 (sk_lock-AF_SMC/1){+.+.}-{0:0}, at: smc_release+0x1d8/0x51c 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+0x58/0x110 net/core/sock.c:3827
       smc_listen_out+0xe0/0x3b4 net/smc/af_smc.c:1934
       smc_listen_work+0x410/0xe7c net/smc/af_smc.c:-1
       process_one_work kernel/workqueue.c:3387 [inline]
       process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470
       worker_thread+0x798/0xbd0 kernel/workqueue.c:3551
       kthread+0x304/0x3d4 kernel/kthread.c:436
       ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838

-> #0 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3181 [inline]
       check_prevs_add kernel/locking/lockdep.c:3300 [inline]
       validate_chain kernel/locking/lockdep.c:3924 [inline]
       __lock_acquire+0x1600/0x2a6c kernel/locking/lockdep.c:5254
       lock_acquire+0x150/0x370 kernel/locking/lockdep.c:5908
       touch_work_lockdep_map kernel/workqueue.c:4117 [inline]
       start_flush_work kernel/workqueue.c:4371 [inline]
       __flush_work+0x594/0xa24 kernel/workqueue.c:4403
       __cancel_work_sync+0xc8/0x144 kernel/workqueue.c:4559
       cancel_work_sync+0x24/0x38 kernel/workqueue.c:4596
       smc_clcsock_release+0x64/0xe8 net/smc/smc_close.c:29
       __smc_release+0x514/0x698 net/smc/af_smc.c:318
       smc_close_non_accepted+0xd8/0x254 net/smc/af_smc.c:1866
       smc_close_cleanup_listen net/smc/smc_close.c:45 [inline]
       smc_close_active+0x7e4/0x9d0 net/smc/smc_close.c:225
       __smc_release+0x90/0x698 net/smc/af_smc.c:294
       smc_release+0x248/0x51c net/smc/af_smc.c:361
       __sock_release+0xa0/0x1d4 net/socket.c:735
       sock_close+0x24/0x38 net/socket.c:1526
       __fput+0x338/0x74c fs/file_table.c:512
       ____fput+0x20/0x30 fs/file_table.c:540
       task_work_run+0x1cc/0x25c 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:70 [inline]
       exit_to_user_mode_loop+0x10c/0x17c kernel/entry/common.c:101
       __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
       syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
       arm64_syscall_exit_to_user_mode arch/arm64/kernel/entry-common.c:108 [inline]
       el0_svc+0x18c/0x260 arch/arm64/kernel/entry-common.c:759
       el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590

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 ***

locks held by syz.0.1815/8628: 3, last CPU#1:
 #0: ffff0000ec84d880 (&sb->s_type->i_mutex_key#12){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1024 [inline]
 #0: ffff0000ec84d880 (&sb->s_type->i_mutex_key#12){+.+.}-{4:4}, at: __sock_release+0x7c/0x1d4 net/socket.c:734
 #1: ffff0000c6491b60 (sk_lock-AF_SMC/1){+.+.}-{0:0}, at: smc_release+0x1d8/0x51c net/smc/af_smc.c:-1
 #2: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #2: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: start_flush_work kernel/workqueue.c:4345 [inline]
 #2: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: __flush_work+0x108/0xa24 kernel/workqueue.c:4403

stack backtrace:
CPU: 1 UID: 0 PID: 8628 Comm: syz.0.1815 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_circular_bug+0x328/0x330 kernel/locking/lockdep.c:2059
 check_noncircular+0x158/0x174 kernel/locking/lockdep.c:2191
 check_prev_add kernel/locking/lockdep.c:3181 [inline]
 check_prevs_add kernel/locking/lockdep.c:3300 [inline]
 validate_chain kernel/locking/lockdep.c:3924 [inline]
 __lock_acquire+0x1600/0x2a6c kernel/locking/lockdep.c:5254
 lock_acquire+0x150/0x370 kernel/locking/lockdep.c:5908
 touch_work_lockdep_map kernel/workqueue.c:4117 [inline]
 start_flush_work kernel/workqueue.c:4371 [inline]
 __flush_work+0x594/0xa24 kernel/workqueue.c:4403
 __cancel_work_sync+0xc8/0x144 kernel/workqueue.c:4559
 cancel_work_sync+0x24/0x38 kernel/workqueue.c:4596
 smc_clcsock_release+0x64/0xe8 net/smc/smc_close.c:29
 __smc_release+0x514/0x698 net/smc/af_smc.c:318
 smc_close_non_accepted+0xd8/0x254 net/smc/af_smc.c:1866
 smc_close_cleanup_listen net/smc/smc_close.c:45 [inline]
 smc_close_active+0x7e4/0x9d0 net/smc/smc_close.c:225
 __smc_release+0x90/0x698 net/smc/af_smc.c:294
 smc_release+0x248/0x51c net/smc/af_smc.c:361
 __sock_release+0xa0/0x1d4 net/socket.c:735
 sock_close+0x24/0x38 net/socket.c:1526
 __fput+0x338/0x74c fs/file_table.c:512
 ____fput+0x20/0x30 fs/file_table.c:540
 task_work_run+0x1cc/0x25c 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:70 [inline]
 exit_to_user_mode_loop+0x10c/0x17c kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 arm64_syscall_exit_to_user_mode arch/arm64/kernel/entry-common.c:108 [inline]
 el0_svc+0x18c/0x260 arch/arm64/kernel/entry-common.c:759
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590

final repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.0.1815/8628 is trying to acquire lock:
ffff0000c4e896e8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: touch_work_lockdep_map kernel/workqueue.c:4117 [inline]
ffff0000c4e896e8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: start_flush_work kernel/workqueue.c:4371 [inline]
ffff0000c4e896e8 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}, at: __flush_work+0x58c/0xa24 kernel/workqueue.c:4403

but task is already holding lock:
ffff0000c6491b60 (sk_lock-AF_SMC/1){+.+.}-{0:0}, at: smc_release+0x1d8/0x51c 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+0x58/0x110 net/core/sock.c:3827
       smc_listen_out+0xe0/0x3b4 net/smc/af_smc.c:1934
       smc_listen_work+0x410/0xe7c net/smc/af_smc.c:-1
       process_one_work kernel/workqueue.c:3387 [inline]
       process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470
       worker_thread+0x798/0xbd0 kernel/workqueue.c:3551
       kthread+0x304/0x3d4 kernel/kthread.c:436
       ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838

-> #0 ((work_completion)(&new_smc->smc_listen_work)){+.+.}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3181 [inline]
       check_prevs_add kernel/locking/lockdep.c:3300 [inline]
       validate_chain kernel/locking/lockdep.c:3924 [inline]
       __lock_acquire+0x1600/0x2a6c kernel/locking/lockdep.c:5254
       lock_acquire+0x150/0x370 kernel/locking/lockdep.c:5908
       touch_work_lockdep_map kernel/workqueue.c:4117 [inline]
       start_flush_work kernel/workqueue.c:4371 [inline]
       __flush_work+0x594/0xa24 kernel/workqueue.c:4403
       __cancel_work_sync+0xc8/0x144 kernel/workqueue.c:4559
       cancel_work_sync+0x24/0x38 kernel/workqueue.c:4596
       smc_clcsock_release+0x64/0xe8 net/smc/smc_close.c:29
       __smc_release+0x514/0x698 net/smc/af_smc.c:318
       smc_close_non_accepted+0xd8/0x254 net/smc/af_smc.c:1866
       smc_close_cleanup_listen net/smc/smc_close.c:45 [inline]
       smc_close_active+0x7e4/0x9d0 net/smc/smc_close.c:225
       __smc_release+0x90/0x698 net/smc/af_smc.c:294
       smc_release+0x248/0x51c net/smc/af_smc.c:361
       __sock_release+0xa0/0x1d4 net/socket.c:735
       sock_close+0x24/0x38 net/socket.c:1526
       __fput+0x338/0x74c fs/file_table.c:512
       ____fput+0x20/0x30 fs/file_table.c:540
       task_work_run+0x1cc/0x25c 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:70 [inline]
       exit_to_user_mode_loop+0x10c/0x17c kernel/entry/common.c:101
       __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
       syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
       arm64_syscall_exit_to_user_mode arch/arm64/kernel/entry-common.c:108 [inline]
       el0_svc+0x18c/0x260 arch/arm64/kernel/entry-common.c:759
       el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
       el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590

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 ***

locks held by syz.0.1815/8628: 3, last CPU#1:
 #0: ffff0000ec84d880 (&sb->s_type->i_mutex_key#12){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1024 [inline]
 #0: ffff0000ec84d880 (&sb->s_type->i_mutex_key#12){+.+.}-{4:4}, at: __sock_release+0x7c/0x1d4 net/socket.c:734
 #1: ffff0000c6491b60 (sk_lock-AF_SMC/1){+.+.}-{0:0}, at: smc_release+0x1d8/0x51c net/smc/af_smc.c:-1
 #2: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #2: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: start_flush_work kernel/workqueue.c:4345 [inline]
 #2: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: __flush_work+0x108/0xa24 kernel/workqueue.c:4403

stack backtrace:
CPU: 1 UID: 0 PID: 8628 Comm: syz.0.1815 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_circular_bug+0x328/0x330 kernel/locking/lockdep.c:2059
 check_noncircular+0x158/0x174 kernel/locking/lockdep.c:2191
 check_prev_add kernel/locking/lockdep.c:3181 [inline]
 check_prevs_add kernel/locking/lockdep.c:3300 [inline]
 validate_chain kernel/locking/lockdep.c:3924 [inline]
 __lock_acquire+0x1600/0x2a6c kernel/locking/lockdep.c:5254
 lock_acquire+0x150/0x370 kernel/locking/lockdep.c:5908
 touch_work_lockdep_map kernel/workqueue.c:4117 [inline]
 start_flush_work kernel/workqueue.c:4371 [inline]
 __flush_work+0x594/0xa24 kernel/workqueue.c:4403
 __cancel_work_sync+0xc8/0x144 kernel/workqueue.c:4559
 cancel_work_sync+0x24/0x38 kernel/workqueue.c:4596
 smc_clcsock_release+0x64/0xe8 net/smc/smc_close.c:29
 __smc_release+0x514/0x698 net/smc/af_smc.c:318
 smc_close_non_accepted+0xd8/0x254 net/smc/af_smc.c:1866
 smc_close_cleanup_listen net/smc/smc_close.c:45 [inline]
 smc_close_active+0x7e4/0x9d0 net/smc/smc_close.c:225
 __smc_release+0x90/0x698 net/smc/af_smc.c:294
 smc_release+0x248/0x51c net/smc/af_smc.c:361
 __sock_release+0xa0/0x1d4 net/socket.c:735
 sock_close+0x24/0x38 net/socket.c:1526
 __fput+0x338/0x74c fs/file_table.c:512
 ____fput+0x20/0x30 fs/file_table.c:540
 task_work_run+0x1cc/0x25c 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:70 [inline]
 exit_to_user_mode_loop+0x10c/0x17c kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 arm64_syscall_exit_to_user_mode arch/arm64/kernel/entry-common.c:108 [inline]
 el0_svc+0x18c/0x260 arch/arm64/kernel/entry-common.c:759
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590