Extracting prog: 4m10.508323665s
Minimizing prog: 1h0m25.73682484s
Simplifying prog options: 3m36.772163683s
Extracting C: 1m5.838172652s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'veth0\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0xc0, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r2, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x90, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x1, [], 0x0, [0x1]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x20, 0x2, 0x0, 0x1, [{0x1c, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_CMD={0x5}, @TCA_TAPRIO_SCHED_ENTRY_GATE_MASK={0x8, 0x3, 0x1}, @TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x3e8}]}]}, @TCA_TAPRIO_ATTR_SCHED_BASE_TIME={0xc, 0x3, 0xffffffffc4653600}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8}]}}]}, 0xc0}}, 0x0)

program crashed: INFO: task hung in del_device_store
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX
detailed listing:
executing program 0:
socket$nl_route(0x10, 0x3, 0x0)
r0 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'veth0\x00'})

program did not crash
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$nl_route-socket$inet-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
socket$inet(0x2, 0x2, 0x0)
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0xc0, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x90, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x1, [], 0x0, [0x1]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x20, 0x2, 0x0, 0x1, [{0x1c, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_CMD={0x5}, @TCA_TAPRIO_SCHED_ENTRY_GATE_MASK={0x8, 0x3, 0x1}, @TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x3e8}]}]}, @TCA_TAPRIO_ATTR_SCHED_BASE_TIME={0xc, 0x3, 0xffffffffc4653600}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8}]}}]}, 0xc0}}, 0x0)

program did not crash
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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000300)={'veth0\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0xc0, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r1, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x90, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x1, [], 0x0, [0x1]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x20, 0x2, 0x0, 0x1, [{0x1c, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_CMD={0x5}, @TCA_TAPRIO_SCHED_ENTRY_GATE_MASK={0x8, 0x3, 0x1}, @TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x3e8}]}]}, @TCA_TAPRIO_ATTR_SCHED_BASE_TIME={0xc, 0x3, 0xffffffffc4653600}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8}]}}]}, 0xc0}}, 0x0)

program did not crash
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$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'veth0\x00', <r1=>0x0})
sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0xc0, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r1, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x90, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x1, [], 0x0, [0x1]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x20, 0x2, 0x0, 0x1, [{0x1c, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_CMD={0x5}, @TCA_TAPRIO_SCHED_ENTRY_GATE_MASK={0x8, 0x3, 0x1}, @TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x3e8}]}]}, @TCA_TAPRIO_ATTR_SCHED_BASE_TIME={0xc, 0x3, 0xffffffffc4653600}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8}]}}]}, 0xc0}}, 0x0)

program did not crash
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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, 0x0)
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0xc0, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x90, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x1, [], 0x0, [0x1]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x20, 0x2, 0x0, 0x1, [{0x1c, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_CMD={0x5}, @TCA_TAPRIO_SCHED_ENTRY_GATE_MASK={0x8, 0x3, 0x1}, @TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x3e8}]}]}, @TCA_TAPRIO_ATTR_SCHED_BASE_TIME={0xc, 0x3, 0xffffffffc4653600}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8}]}}]}, 0xc0}}, 0x0)

program did not crash
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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'veth0\x00'})
sendmsg$nl_route_sched(r0, 0x0, 0x0)

program did not crash
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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'veth0\x00'})
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, 0x0}, 0x0)

program did not crash
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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'veth0\x00'})
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={0x0}}, 0x0)

program did not crash
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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'veth0\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0x34, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r2, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x4}}]}, 0x34}}, 0x0)

program did not crash
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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'veth0\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0xa8, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r2, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x78, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x1, [], 0x0, [0x1]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x8, 0x2, 0x0, 0x1, [{0x4}]}, @TCA_TAPRIO_ATTR_SCHED_BASE_TIME={0xc, 0x3, 0xffffffffc4653600}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8}]}}]}, 0xa8}}, 0x0)

program did not crash
extracting C reproducer
testing compiled C 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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
program crashed: BUG: soft lockup in corrupted
a never seen crash title: BUG: soft lockup in corrupted, ignore
simplifying guilty program options
testing program (duration=6m0s, {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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'veth0\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0xc0, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r2, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x90, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x1, [], 0x0, [0x1]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x20, 0x2, 0x0, 0x1, [{0x1c, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_CMD={0x5}, @TCA_TAPRIO_SCHED_ENTRY_GATE_MASK={0x8, 0x3, 0x1}, @TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x3e8}]}]}, @TCA_TAPRIO_ATTR_SCHED_BASE_TIME={0xc, 0x3, 0xffffffffc4653600}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8}]}}]}, 0xc0}}, 0x0)

program crashed: BUG: soft lockup in corrupted
a never seen crash title: BUG: soft lockup in corrupted, ignore
testing program (duration=6m0s, {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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'veth0\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0xc0, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r2, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x90, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x1, [], 0x0, [0x1]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x20, 0x2, 0x0, 0x1, [{0x1c, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_CMD={0x5}, @TCA_TAPRIO_SCHED_ENTRY_GATE_MASK={0x8, 0x3, 0x1}, @TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x3e8}]}]}, @TCA_TAPRIO_ATTR_SCHED_BASE_TIME={0xc, 0x3, 0xffffffffc4653600}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8}]}}]}, 0xc0}}, 0x0)

program crashed: unregister_netdevice: waiting for DEV to become free
a never seen crash title: unregister_netdevice: waiting for DEV to become free, ignore
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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'veth0\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0xc0, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r2, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x90, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x1, [], 0x0, [0x1]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x20, 0x2, 0x0, 0x1, [{0x1c, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_CMD={0x5}, @TCA_TAPRIO_SCHED_ENTRY_GATE_MASK={0x8, 0x3, 0x1}, @TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x3e8}]}]}, @TCA_TAPRIO_ATTR_SCHED_BASE_TIME={0xc, 0x3, 0xffffffffc4653600}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8}]}}]}, 0xc0}}, 0x0)

program crashed: unregister_netdevice: waiting for DEV to become free
validation run: crashed=true
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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'veth0\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0xc0, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r2, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x90, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x1, [], 0x0, [0x1]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x20, 0x2, 0x0, 0x1, [{0x1c, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_CMD={0x5}, @TCA_TAPRIO_SCHED_ENTRY_GATE_MASK={0x8, 0x3, 0x1}, @TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x3e8}]}]}, @TCA_TAPRIO_ATTR_SCHED_BASE_TIME={0xc, 0x3, 0xffffffffc4653600}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8}]}}]}, 0xc0}}, 0x0)

program crashed: unregister_netdevice: waiting for DEV to become free
validation run: crashed=true
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$nl_route-socket$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'veth0\x00', <r2=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000240)=@newqdisc={0xc0, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r2, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x90, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x1, [], 0x0, [0x1]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x20, 0x2, 0x0, 0x1, [{0x1c, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_CMD={0x5}, @TCA_TAPRIO_SCHED_ENTRY_GATE_MASK={0x8, 0x3, 0x1}, @TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x3e8}]}]}, @TCA_TAPRIO_ATTR_SCHED_BASE_TIME={0xc, 0x3, 0xffffffffc4653600}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8}]}}]}, 0xc0}}, 0x0)

program crashed: WARNING in drm_crtc_wait_one_vblank
validation run: crashed=true
reproducing took 1h12m10.360251603s
repro crashed as (corrupted=false):
------------[ cut here ]------------
faux_driver vkms: [drm] vblank wait timed out on crtc 0
WARNING: drivers/gpu/drm/drm_vblank.c:1329 at drm_crtc_wait_one_vblank+0x410/0x440 drivers/gpu/drm/drm_vblank.c:1331, CPU#0: kworker/0:3/4384
Modules linked in:
CPU: 0 UID: 0 PID: 4384 Comm: kworker/0:3 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
Workqueue: events drm_fb_helper_damage_work
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : drm_crtc_wait_one_vblank+0x410/0x440 drivers/gpu/drm/drm_vblank.c:1331
lr : drm_crtc_wait_one_vblank+0x408/0x440 drivers/gpu/drm/drm_vblank.c:1329
sp : ffff800094f87820
x29: ffff800094f878d0 x28: dfff800000000000 x27: ffff0000c7c6a880
x26: ffff800094f87820 x25: dfff800000000000 x24: ffff7000129f0f04
x23: ffff800086f383a0 x22: ffff0000c7b5d000 x21: ffff800086fbdb80
x20: ffff0000c7d6c000 x19: 0000000000000000 x18: 1fffe00035bc5428
x17: 0000000000000003 x16: ffff800088b07000 x15: ffff800088bbd060
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000002 x9 : ac1288e37c1a4b00
x8 : ac1288e37c1a4b00 x7 : ffff80008048de94 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f8054
x2 : 0000000100000000 x1 : 0000000000000000 x0 : ffff0000c7d6c000
Call trace:
 drm_crtc_wait_one_vblank+0x410/0x440 drivers/gpu/drm/drm_vblank.c:1331 (P)
 drm_client_modeset_wait_for_vblank+0xc4/0xec drivers/gpu/drm/drm_client_modeset.c:1331
 drm_fb_helper_fb_dirty drivers/gpu/drm/drm_fb_helper.c:327 [inline]
 drm_fb_helper_damage_work+0x520/0xbc0 drivers/gpu/drm/drm_fb_helper.c:365
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842
irq event stamp: 61530
hardirqs last  enabled at (61529): [<ffff8000868e94fc>] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline]
hardirqs last  enabled at (61529): [<ffff8000868e94fc>] arm64_exit_to_kernel_mode+0x80/0x94 arch/arm64/kernel/entry-common.c:62
hardirqs last disabled at (61530): [<ffff8000868e5428>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425
softirqs last  enabled at (61524): [<ffff80008030ff18>] softirq_handle_end kernel/softirq.c:468 [inline]
softirqs last  enabled at (61524): [<ffff80008030ff18>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650
softirqs last disabled at (61273): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---

final repro crashed as (corrupted=false):
------------[ cut here ]------------
faux_driver vkms: [drm] vblank wait timed out on crtc 0
WARNING: drivers/gpu/drm/drm_vblank.c:1329 at drm_crtc_wait_one_vblank+0x410/0x440 drivers/gpu/drm/drm_vblank.c:1331, CPU#0: kworker/0:3/4384
Modules linked in:
CPU: 0 UID: 0 PID: 4384 Comm: kworker/0:3 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
Workqueue: events drm_fb_helper_damage_work
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : drm_crtc_wait_one_vblank+0x410/0x440 drivers/gpu/drm/drm_vblank.c:1331
lr : drm_crtc_wait_one_vblank+0x408/0x440 drivers/gpu/drm/drm_vblank.c:1329
sp : ffff800094f87820
x29: ffff800094f878d0 x28: dfff800000000000 x27: ffff0000c7c6a880
x26: ffff800094f87820 x25: dfff800000000000 x24: ffff7000129f0f04
x23: ffff800086f383a0 x22: ffff0000c7b5d000 x21: ffff800086fbdb80
x20: ffff0000c7d6c000 x19: 0000000000000000 x18: 1fffe00035bc5428
x17: 0000000000000003 x16: ffff800088b07000 x15: ffff800088bbd060
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000002 x9 : ac1288e37c1a4b00
x8 : ac1288e37c1a4b00 x7 : ffff80008048de94 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f8054
x2 : 0000000100000000 x1 : 0000000000000000 x0 : ffff0000c7d6c000
Call trace:
 drm_crtc_wait_one_vblank+0x410/0x440 drivers/gpu/drm/drm_vblank.c:1331 (P)
 drm_client_modeset_wait_for_vblank+0xc4/0xec drivers/gpu/drm/drm_client_modeset.c:1331
 drm_fb_helper_fb_dirty drivers/gpu/drm/drm_fb_helper.c:327 [inline]
 drm_fb_helper_damage_work+0x520/0xbc0 drivers/gpu/drm/drm_fb_helper.c:365
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842
irq event stamp: 61530
hardirqs last  enabled at (61529): [<ffff8000868e94fc>] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline]
hardirqs last  enabled at (61529): [<ffff8000868e94fc>] arm64_exit_to_kernel_mode+0x80/0x94 arch/arm64/kernel/entry-common.c:62
hardirqs last disabled at (61530): [<ffff8000868e5428>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425
softirqs last  enabled at (61524): [<ffff80008030ff18>] softirq_handle_end kernel/softirq.c:468 [inline]
softirqs last  enabled at (61524): [<ffff80008030ff18>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650
softirqs last disabled at (61273): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---