Extracting prog: 12m11.800523881s
Minimizing prog: 1h2m1.925460228s
Simplifying prog options: 6m18.82225366s
Extracting C: 3m33.900736038s
Simplifying C: 0s


extracting reproducer from 80 programs
testing a last program of every proc
single: executing 30 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-getpid-sched_setaffinity-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-bpf$PROG_LOAD-bpf$PROG_LOAD-open-prctl$PR_SET_NAME-bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-socket$inet6_mptcp-syz_mount_image$ext4-openat-write$cgroup_subtree-pipe2-mount$9p_fd-bpf$BPF_RAW_TRACEPOINT_OPEN-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
r0 = getpid()
sched_setaffinity(0x0, 0x0, 0x0)
sched_setscheduler(r0, 0x2, &(0x7f0000000200)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={<r1=>0xffffffffffffffff, <r2=>0xffffffffffffffff})
connect$unix(r1, &(0x7f000057eff8)=@abs, 0x6e)
sendmmsg$unix(r2, &(0x7f0000000000), 0x651, 0x0)
recvmmsg(r1, &(0x7f00000000c0), 0x10106, 0x2, 0x0)
r3 = bpf$MAP_CREATE(0x0, 0x0, 0x0)
r4 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0x7, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x94)
r5 = bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000740)={&(0x7f00000006c0)='sched_switch\x00', r4}, 0x10)
bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x0, 0xc, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41000, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x94)
bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, 0x0, &(0x7f0000000080)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x94)
open(0x0, 0x60840, 0x0)
prctl$PR_SET_NAME(0xf, &(0x7f0000000680)='+}[@\x00[$oB\xfa=\xee\xc4F\xba\xed\x97')
r6 = bpf$PROG_LOAD(0x5, &(0x7f0000000080)={0x11, 0x8, &(0x7f0000000a80)=ANY=[@ANYBLOB="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&(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x41)
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000240)={&(0x7f0000000080)='sched_switch\x00', r6}, 0x18)
socket$inet6_mptcp(0xa, 0x1, 0x106)
syz_mount_image$ext4(&(0x7f00000000c0)='ext4\x00', &(0x7f0000000580)='./file1\x00', 0x800040, &(0x7f0000000340), 0x1, 0x597, &(0x7f0000000b80)="$eJzs3U1sG2UaAOB3xvH2L9t0pV1pd9VDtYtUpKpO0h8onNorolKlHpC4lMhxoyhOHMUONFEO6b1C9IAA9VJucOAI4sABcUHiwpULiDNSRSOQmh7AyH9pm9jBKXWdxs8jjT3ffON5v2/G73hmNCMHMLCO1V7SiP9ExKUkYuShuqFoVh5rzLe+tpK/v7aST6JavfxzEklE3FtbybfmT5rvhyJiNSL+HRFfZSNOpFvjlpeWZyaKxcJCszxamZ0fLS8tn5yenZgqTBXmTr/40tlzZ86Onxrv3Pjszvp644ebb9/49pXbNz/+5Ohq/t2JJM7HcLPu4X48SY11ko3zm6af6UWwPkr63QAeS6aZ57VU+leMRKaZ9e1UR55q04Aeq+6LqO5Esrqj2YHdLNlZ/gN7Rus4oHb+2xoeOUDI9Pb4486FxglILe56c2jUDDWuTcT++rnJwV+SR85MauebR3rbNAbA6vWIGBsa2vr9T5rfv8c39iQaSE99eaGxobZu/3Rj/xNt9j/DrWunf1Fr/7e+Zf/3IH6mw/7vUpcxfnv9xw86xr8e8d+28ZON+Emb+GlEvNFl/FuvfX6uU131w4jj0T5+S7L99eHRq9PFwljjtW2ML44ffXm7/h/sEL9xzXZ//Wem3fqf77L/n3396f9Wt4n//P+33/7t1v+BiHiny/j/uPfRq53q7lxP7taOAna6/WvTbncZ/4Xzx77vUHWgy0UAAAAAAAAAAABtpPV72ZI0tzGeprlc4xnef8bBtFgqV05cLS3OTTbueTsS2bR1p9VIo5zUyuPN+3Fb5VObyqdb9xFnDtTLuXypONnnvgMAAAAAAAAAAAAAAAAAAMBucWjT8/+/ZurP/2/+u2pgr+r8l9/AXif/YXA9mv9JxL6+NQV4yvz+w8Cqyn8YXPIfBpf8h8El/2FwyX8YXPIfBpf8BwAAAAAAAAAAAAAAAAAAAAAAAACAnrh08WJtqN5fW8nXypNDS4szpTdPThbKM7nZxXwuX1qYz02VSlPFQi5fmv2z5RVLpfmxmFu8NloplCuj5aXlK7OlxbnKlenZianClUL2qfQKAAAAAAAAAAAAAAAAAAAAni3D9SFJcxGR1sfTNJeL+HtEHIlscnW6WBiLiMMR8V0mu69WHu93owEAAAAAAAAAAAAAAAAAAGCPKS8tz0wUi4WFARkZ2jLlm84zR8Tqk21GbYk7/lS2ua12yzp81kYObz9PJvrewt040ucdEwAAAAAAAAAAAAAAAAAADKAHD/12+4nfe9sgAAAAAAAAAAAAAAAAAAAAGEjpT0lE1IbjI88Nb679W7Keqb9HxFu3Lr93baJSWRivTb+7Mb3yfnP6qX60H+hWK09beQwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA8UF5anpkoFgsLPRzpdx8BAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHscfAQAA//+aXtbd")
r7 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./file2\x00', 0x105042, 0x40)
write$cgroup_subtree(r7, &(0x7f0000000380)=ANY=[], 0x32600)
pipe2(&(0x7f0000001cc0)={0xffffffffffffffff, <r8=>0xffffffffffffffff}, 0x800)
mount$9p_fd(0x0, &(0x7f0000000000)='.\x00', &(0x7f0000000040), 0x3004400, &(0x7f0000000780)=ANY=[@ANYRESOCT=r5, @ANYRES64=r5, @ANYRES32=r3, @ANYRESHEX=r8, @ANYRESHEX=r5, @ANYRESDEC=r2, @ANYRES64=r5])
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000001c0)={0x0}, 0x18)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(0xffffffffffffffff, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000001200)={&(0x7f00000004c0)=ANY=[@ANYBLOB="38000000031401002dbd7000000000000900020073080000000000000800410073697700140033006c6f000000000000000000001d"], 0x38}, 0x1, 0x0, 0x0, 0x854}, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-ioctl$sock_SIOCGIFINDEX-socket$netlink-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$inet(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'bond0\x00', <r1=>0x0})
r2 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f00000000c0)=@newqdisc={0xa4, 0x24, 0xf0b, 0x70bd2b, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}, {0x2}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1], 0x0, [0x5, 0x4, 0x2, 0x0, 0x8, 0x0, 0x9, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3], [0x0, 0x8, 0x0, 0x0, 0x2]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x400}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0xa4}, 0x1, 0x0, 0x0, 0x20000040}, 0x0)

program crashed: INFO: rcu detected stall in neigh_periodic_work
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-ioctl$sock_SIOCGIFINDEX-socket$netlink
detailed listing:
executing program 0:
r0 = socket$inet(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'bond0\x00'})
socket$netlink(0x10, 0x3, 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 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(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'bond0\x00', <r1=>0x0})
sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f00000000c0)=@newqdisc={0xa4, 0x24, 0xf0b, 0x70bd2b, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}, {0x2}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1], 0x0, [0x5, 0x4, 0x2, 0x0, 0x8, 0x0, 0x9, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3], [0x0, 0x8, 0x0, 0x0, 0x2]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x400}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0xa4}, 0x1, 0x0, 0x0, 0x20000040}, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-socket$netlink-sendmsg$nl_route_sched
detailed listing:
executing program 0:
socket$inet(0x10, 0x3, 0x0)
r0 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r0, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f00000000c0)=@newqdisc={0xa4, 0x24, 0xf0b, 0x70bd2b, 0x0, {0x0, 0x0, 0x12, 0x0, {}, {0xffff, 0xffff}, {0x2}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1], 0x0, [0x5, 0x4, 0x2, 0x0, 0x8, 0x0, 0x9, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3], [0x0, 0x8, 0x0, 0x0, 0x2]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x400}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0xa4}, 0x1, 0x0, 0x0, 0x20000040}, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$sock_SIOCGIFINDEX-socket$netlink-sendmsg$nl_route_sched
detailed listing:
executing program 0:
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000300)={'bond0\x00', <r0=>0x0})
r1 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r1, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f00000000c0)=@newqdisc={0xa4, 0x24, 0xf0b, 0x70bd2b, 0x0, {0x0, 0x0, 0x12, r0, {}, {0xffff, 0xffff}, {0x2}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1], 0x0, [0x5, 0x4, 0x2, 0x0, 0x8, 0x0, 0x9, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3], [0x0, 0x8, 0x0, 0x0, 0x2]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x400}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0xa4}, 0x1, 0x0, 0x0, 0x20000040}, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-ioctl$sock_SIOCGIFINDEX-socket$netlink-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$inet(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, 0x0)
r1 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r1, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f00000000c0)=@newqdisc={0xa4, 0x24, 0xf0b, 0x70bd2b, 0x0, {0x0, 0x0, 0x12, 0x0, {}, {0xffff, 0xffff}, {0x2}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1], 0x0, [0x5, 0x4, 0x2, 0x0, 0x8, 0x0, 0x9, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3], [0x0, 0x8, 0x0, 0x0, 0x2]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x400}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0xa4}, 0x1, 0x0, 0x0, 0x20000040}, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-ioctl$sock_SIOCGIFINDEX-socket$netlink-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$inet(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'bond0\x00'})
r1 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r1, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-ioctl$sock_SIOCGIFINDEX-socket$netlink-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$inet(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'bond0\x00'})
r1 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r1, &(0x7f00000007c0)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x20000040}, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-ioctl$sock_SIOCGIFINDEX-socket$netlink-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$inet(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'bond0\x00'})
r1 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r1, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={0x0}, 0x1, 0x0, 0x0, 0x20000040}, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-ioctl$sock_SIOCGIFINDEX-socket$netlink-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$inet(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'bond0\x00', <r1=>0x0})
r2 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f00000000c0)=@newqdisc={0x34, 0x24, 0xf0b, 0x70bd2b, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}, {0x2}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x4}}]}, 0x34}, 0x1, 0x0, 0x0, 0x20000040}, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-ioctl$sock_SIOCGIFINDEX-socket$netlink-sendmsg$nl_route_sched
program crashed: INFO: rcu detected stall in tc_modify_qdisc
a never seen crash title: INFO: rcu detected stall in tc_modify_qdisc, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-ioctl$sock_SIOCGIFINDEX-socket$netlink-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$inet(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'bond0\x00', <r1=>0x0})
r2 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f00000000c0)=@newqdisc={0xa4, 0x24, 0xf0b, 0x70bd2b, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}, {0x2}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1], 0x0, [0x5, 0x4, 0x2, 0x0, 0x8, 0x0, 0x9, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3], [0x0, 0x8, 0x0, 0x0, 0x2]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x400}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0xa4}, 0x1, 0x0, 0x0, 0x20000040}, 0x0)

program crashed: INFO: rcu detected stall in do_idle
a never seen crash title: INFO: rcu detected stall in do_idle, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-ioctl$sock_SIOCGIFINDEX-socket$netlink-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$inet(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'bond0\x00', <r1=>0x0})
r2 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f00000000c0)=@newqdisc={0xa4, 0x24, 0xf0b, 0x70bd2b, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}, {0x2}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1], 0x0, [0x5, 0x4, 0x2, 0x0, 0x8, 0x0, 0x9, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3], [0x0, 0x8, 0x0, 0x0, 0x2]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x400}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0xa4}, 0x1, 0x0, 0x0, 0x20000040}, 0x0)

program crashed: INFO: rcu detected stall in gc_worker
a never seen crash title: INFO: rcu detected stall in gc_worker, ignore
reproducing took 1h24m6.448986567s
repro crashed as (corrupted=false):
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10500 ticks this GP) idle=55fc/1/0x4000000000000000 softirq=11229/11229 fqs=0
	(t=10500 jiffies g=13461 q=552 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g13461 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=6848
rcu: rcu_preempt kthread starved for 10500 jiffies! g13461 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:26912 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
 schedule+0xb9/0x180 kernel/sched/core.c:6637
 schedule_timeout+0x15c/0x280 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2f2/0x1310 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x95/0x380 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 4324 Comm: kworker/0:11 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
RIP: 0010:queued_write_lock_slowpath+0x11d/0x24f kernel/locking/qrwlock.c:85
Code: b8 f7 f0 81 0b 00 01 00 00 43 0f b6 04 27 84 c0 74 35 89 d9 80 e1 07 80 c1 03 38 c1 7c 29 48 89 df e8 a7 ed b8 f7 eb 1f f3 90 <43> 0f b6 04 27 84 c0 74 14 89 d9 80 e1 07 80 c1 03 38 c1 7c 08 48
RSP: 0018:ffffc90003287500 EFLAGS: 00000206
RAX: 00000000000001ff RBX: ffffffff8dc3ed60 RCX: ffffffff8a195f35
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8dc3ed60
RBP: ffffc900032875b0 R08: dffffc0000000000 R09: fffffbfff1b87dad
R10: fffffbfff1b87dad R11: 1ffffffff1b87dac R12: dffffc0000000000
R13: 1ffff92000650ea4 R14: ffffc90003287550 R15: 1ffffffff1b87dac
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c7cf982ca0 CR3: 0000000057076000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queued_write_lock include/asm-generic/qrwlock.h:101 [inline]
 do_raw_write_lock+0x1ea/0x250 kernel/locking/spinlock_debug.c:210
 ___neigh_create+0xe61/0x24c0 net/core/neighbour.c:682
 ip6_finish_output2+0x14f0/0x1590 net/ipv6/ip6_output.c:129
 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
 ip6_finish_output+0x5d3/0xa60 net/ipv6/ip6_output.c:216
 ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline]
 udp_tunnel6_xmit_skb+0x5a0/0xa10 net/ipv6/ip6_udp_tunnel.c:109
 send6+0x59f/0x8b0 drivers/net/wireguard/socket.c:152
 wg_socket_send_skb_to_peer+0x10d/0x1c0 drivers/net/wireguard/socket.c:178
 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
 wg_packet_tx_worker+0x1c4/0x7c0 drivers/net/wireguard/send.c:276
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
CPU: 0 PID: 4324 Comm: kworker/0:11 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
RIP: 0010:queued_write_lock_slowpath+0x11d/0x24f kernel/locking/qrwlock.c:85
Code: b8 f7 f0 81 0b 00 01 00 00 43 0f b6 04 27 84 c0 74 35 89 d9 80 e1 07 80 c1 03 38 c1 7c 29 48 89 df e8 a7 ed b8 f7 eb 1f f3 90 <43> 0f b6 04 27 84 c0 74 14 89 d9 80 e1 07 80 c1 03 38 c1 7c 08 48
RSP: 0018:ffffc90003287500 EFLAGS: 00000206
RAX: 00000000000001ff RBX: ffffffff8dc3ed60 RCX: ffffffff8a195f35
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8dc3ed60
RBP: ffffc900032875b0 R08: dffffc0000000000 R09: fffffbfff1b87dad
R10: fffffbfff1b87dad R11: 1ffffffff1b87dac R12: dffffc0000000000
R13: 1ffff92000650ea4 R14: ffffc90003287550 R15: 1ffffffff1b87dac
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c7cf982ca0 CR3: 0000000057076000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queued_write_lock include/asm-generic/qrwlock.h:101 [inline]
 do_raw_write_lock+0x1ea/0x250 kernel/locking/spinlock_debug.c:210
 ___neigh_create+0xe61/0x24c0 net/core/neighbour.c:682
 ip6_finish_output2+0x14f0/0x1590 net/ipv6/ip6_output.c:129
 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
 ip6_finish_output+0x5d3/0xa60 net/ipv6/ip6_output.c:216
 ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline]
 udp_tunnel6_xmit_skb+0x5a0/0xa10 net/ipv6/ip6_udp_tunnel.c:109
 send6+0x59f/0x8b0 drivers/net/wireguard/socket.c:152
 wg_socket_send_skb_to_peer+0x10d/0x1c0 drivers/net/wireguard/socket.c:178
 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
 wg_packet_tx_worker+0x1c4/0x7c0 drivers/net/wireguard/send.c:276
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4405 Comm: kworker/1:8 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events_power_efficient neigh_periodic_work
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:__lock_acquire+0x10ba/0x7c50 kernel/locking/lockdep.c:5045
Code: 03 89 c3 81 e3 ff 1f 00 00 c1 e8 03 25 f8 03 00 00 48 8d b8 40 82 8b 90 be 08 00 00 00 e8 1e 4f 6f 00 48 0f a3 1d b6 82 28 0f <0f> 83 8c 01 00 00 48 8d 04 5b c1 e0 06 48 8d 98 00 01 24 90 49 b8
RSP: 0018:ffffc900001e0860 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 000000000000005e RCX: ffffffff8162ff82
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff908b8248
RBP: ffffc900001e0ab0 R08: dffffc0000000000 R09: fffffbfff211704a
R10: fffffbfff211704a R11: 1ffffffff2117049 R12: 00000000cf82e703
R13: 00000000c2fd2ede R14: 00000000b144b952 R15: ffff88802efaa890
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055afda3809e8 CR3: 000000000c68e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
 debug_object_activate+0x6a/0x490 lib/debugobjects.c:698
 debug_hrtimer_activate kernel/time/hrtimer.c:411 [inline]
 debug_activate kernel/time/hrtimer.c:466 [inline]
 enqueue_hrtimer+0x30/0x3f0 kernel/time/hrtimer.c:1075
 __run_hrtimer kernel/time/hrtimer.c:1708 [inline]
 __hrtimer_run_queues+0x642/0xc80 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa5/0x100 kernel/locking/spinlock.c:194
Code: 74 05 e8 2e f7 6d f7 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> b6 71 3e f7 65 8b 05 57 33 e9 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90003587a20 EFLAGS: 00000206
RAX: d2679d600dfcc800 RBX: 0000000000000a02 RCX: d2679d600dfcc800
RDX: dffffc0000000000 RSI: ffffffff8a6c0000 RDI: 0000000000000001
RBP: ffffc90003587ab0 R08: dffffc0000000000 R09: fffffbfff2117050
R10: fffffbfff2117050 R11: 1ffffffff211704f R12: dffffc0000000000
R13: ffff888059eb7af8 R14: ffffffff96cde3a0 R15: 1ffff920006b0f44
 debug_rcu_head_queue kernel/rcu/rcu.h:191 [inline]
 kvfree_call_rcu+0xcb/0x870 kernel/rcu/tree.c:3392
 neigh_periodic_work+0x3f3/0xd70 net/core/neighbour.c:1005
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

final repro crashed as (corrupted=false):
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10500 ticks this GP) idle=55fc/1/0x4000000000000000 softirq=11229/11229 fqs=0
	(t=10500 jiffies g=13461 q=552 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g13461 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=6848
rcu: rcu_preempt kthread starved for 10500 jiffies! g13461 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:26912 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
 schedule+0xb9/0x180 kernel/sched/core.c:6637
 schedule_timeout+0x15c/0x280 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2f2/0x1310 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x95/0x380 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 4324 Comm: kworker/0:11 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
RIP: 0010:queued_write_lock_slowpath+0x11d/0x24f kernel/locking/qrwlock.c:85
Code: b8 f7 f0 81 0b 00 01 00 00 43 0f b6 04 27 84 c0 74 35 89 d9 80 e1 07 80 c1 03 38 c1 7c 29 48 89 df e8 a7 ed b8 f7 eb 1f f3 90 <43> 0f b6 04 27 84 c0 74 14 89 d9 80 e1 07 80 c1 03 38 c1 7c 08 48
RSP: 0018:ffffc90003287500 EFLAGS: 00000206
RAX: 00000000000001ff RBX: ffffffff8dc3ed60 RCX: ffffffff8a195f35
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8dc3ed60
RBP: ffffc900032875b0 R08: dffffc0000000000 R09: fffffbfff1b87dad
R10: fffffbfff1b87dad R11: 1ffffffff1b87dac R12: dffffc0000000000
R13: 1ffff92000650ea4 R14: ffffc90003287550 R15: 1ffffffff1b87dac
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c7cf982ca0 CR3: 0000000057076000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queued_write_lock include/asm-generic/qrwlock.h:101 [inline]
 do_raw_write_lock+0x1ea/0x250 kernel/locking/spinlock_debug.c:210
 ___neigh_create+0xe61/0x24c0 net/core/neighbour.c:682
 ip6_finish_output2+0x14f0/0x1590 net/ipv6/ip6_output.c:129
 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
 ip6_finish_output+0x5d3/0xa60 net/ipv6/ip6_output.c:216
 ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline]
 udp_tunnel6_xmit_skb+0x5a0/0xa10 net/ipv6/ip6_udp_tunnel.c:109
 send6+0x59f/0x8b0 drivers/net/wireguard/socket.c:152
 wg_socket_send_skb_to_peer+0x10d/0x1c0 drivers/net/wireguard/socket.c:178
 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
 wg_packet_tx_worker+0x1c4/0x7c0 drivers/net/wireguard/send.c:276
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
CPU: 0 PID: 4324 Comm: kworker/0:11 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
RIP: 0010:queued_write_lock_slowpath+0x11d/0x24f kernel/locking/qrwlock.c:85
Code: b8 f7 f0 81 0b 00 01 00 00 43 0f b6 04 27 84 c0 74 35 89 d9 80 e1 07 80 c1 03 38 c1 7c 29 48 89 df e8 a7 ed b8 f7 eb 1f f3 90 <43> 0f b6 04 27 84 c0 74 14 89 d9 80 e1 07 80 c1 03 38 c1 7c 08 48
RSP: 0018:ffffc90003287500 EFLAGS: 00000206
RAX: 00000000000001ff RBX: ffffffff8dc3ed60 RCX: ffffffff8a195f35
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8dc3ed60
RBP: ffffc900032875b0 R08: dffffc0000000000 R09: fffffbfff1b87dad
R10: fffffbfff1b87dad R11: 1ffffffff1b87dac R12: dffffc0000000000
R13: 1ffff92000650ea4 R14: ffffc90003287550 R15: 1ffffffff1b87dac
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c7cf982ca0 CR3: 0000000057076000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queued_write_lock include/asm-generic/qrwlock.h:101 [inline]
 do_raw_write_lock+0x1ea/0x250 kernel/locking/spinlock_debug.c:210
 ___neigh_create+0xe61/0x24c0 net/core/neighbour.c:682
 ip6_finish_output2+0x14f0/0x1590 net/ipv6/ip6_output.c:129
 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
 ip6_finish_output+0x5d3/0xa60 net/ipv6/ip6_output.c:216
 ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline]
 udp_tunnel6_xmit_skb+0x5a0/0xa10 net/ipv6/ip6_udp_tunnel.c:109
 send6+0x59f/0x8b0 drivers/net/wireguard/socket.c:152
 wg_socket_send_skb_to_peer+0x10d/0x1c0 drivers/net/wireguard/socket.c:178
 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
 wg_packet_tx_worker+0x1c4/0x7c0 drivers/net/wireguard/send.c:276
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4405 Comm: kworker/1:8 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events_power_efficient neigh_periodic_work
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:__lock_acquire+0x10ba/0x7c50 kernel/locking/lockdep.c:5045
Code: 03 89 c3 81 e3 ff 1f 00 00 c1 e8 03 25 f8 03 00 00 48 8d b8 40 82 8b 90 be 08 00 00 00 e8 1e 4f 6f 00 48 0f a3 1d b6 82 28 0f <0f> 83 8c 01 00 00 48 8d 04 5b c1 e0 06 48 8d 98 00 01 24 90 49 b8
RSP: 0018:ffffc900001e0860 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 000000000000005e RCX: ffffffff8162ff82
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff908b8248
RBP: ffffc900001e0ab0 R08: dffffc0000000000 R09: fffffbfff211704a
R10: fffffbfff211704a R11: 1ffffffff2117049 R12: 00000000cf82e703
R13: 00000000c2fd2ede R14: 00000000b144b952 R15: ffff88802efaa890
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055afda3809e8 CR3: 000000000c68e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
 debug_object_activate+0x6a/0x490 lib/debugobjects.c:698
 debug_hrtimer_activate kernel/time/hrtimer.c:411 [inline]
 debug_activate kernel/time/hrtimer.c:466 [inline]
 enqueue_hrtimer+0x30/0x3f0 kernel/time/hrtimer.c:1075
 __run_hrtimer kernel/time/hrtimer.c:1708 [inline]
 __hrtimer_run_queues+0x642/0xc80 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa5/0x100 kernel/locking/spinlock.c:194
Code: 74 05 e8 2e f7 6d f7 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> b6 71 3e f7 65 8b 05 57 33 e9 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90003587a20 EFLAGS: 00000206
RAX: d2679d600dfcc800 RBX: 0000000000000a02 RCX: d2679d600dfcc800
RDX: dffffc0000000000 RSI: ffffffff8a6c0000 RDI: 0000000000000001
RBP: ffffc90003587ab0 R08: dffffc0000000000 R09: fffffbfff2117050
R10: fffffbfff2117050 R11: 1ffffffff211704f R12: dffffc0000000000
R13: ffff888059eb7af8 R14: ffffffff96cde3a0 R15: 1ffff920006b0f44
 debug_rcu_head_queue kernel/rcu/rcu.h:191 [inline]
 kvfree_call_rcu+0xcb/0x870 kernel/rcu/tree.c:3392
 neigh_periodic_work+0x3f3/0xd70 net/core/neighbour.c:1005
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>