Extracting prog: 4m52.491243752s Minimizing prog: 56m9.695581337s Simplifying prog options: 0s Extracting C: 2m24.446473947s Simplifying C: 20m52.357852697s 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}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4040840}, 0x941) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) program crashed: INFO: rcu detected stall in corrupted single: successfully extracted reproducer found reproducer with 3 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}}): socketpair$tipc-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r0, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4040840}, 0x941) (async, rerun: 64) 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}}): socketpair$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) 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}}): sendmsg$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: sendmsg$tipc(0xffffffffffffffff, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4040840}, 0x941) (async, rerun: 64) setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x1, 0x21, &(0x7f00000001c0), 0x4) 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}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4040840}, 0x941) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) 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}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, 0x0) sendmsg$tipc(0xffffffffffffffff, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4040840}, 0x941) (async, rerun: 64) setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x1, 0x21, &(0x7f00000001c0), 0x4) 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}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, 0x0, 0x941) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) 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}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4040840}, 0x941) (rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) 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}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4040840}, 0x941) (async) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) 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}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4040840}, 0x941) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, 0x0, 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}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted simplifying C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C 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}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4040840}, 0x941) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) program crashed: INFO: rcu detected stall in corrupted validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4040840}, 0x941) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) program crashed: INFO: rcu detected stall in corrupted validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f00000004c0)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4040840}, 0x941) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) program crashed: INFO: rcu detected stall in corrupted validation run: crashed=true reproducing took 1h32m59.97089845s repro crashed as (corrupted=true): rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-...!: (1 GPs behind) idle=14fc/1/0x4000000000000000 softirq=18328/18329 fqs=0 rcu: (t=10501 jiffies g=17033 q=195 ncpus=2) rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g17033 f0x0 RCU_GP_WAIT_FQS(5) ->state=I rcu: Possible timer handling issue on cpu=1 timer-softirq=3189 rcu: rcu_preempt kthread starved for 10504 jiffies! g17033 f0x0 RCU_GP_WAIT_FQS(5) ->state=I ->cpu=1 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:28112 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2122 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2330 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6476 Comm: syz.0.196 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x80 kernel/kcov.c:212 Code: 8b 3d 44 b5 ac 0c 48 89 de 5b e9 73 4b 64 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d d8 b4 cc 11 65 48 8b 15 d8 b4 cc 11 f7 c2 00 01 00 ff RSP: 0018:ffffc900046be320 EFLAGS: 00000202 RAX: ffffffff84dd53d3 RBX: ffff88802804d138 RCX: ffff88802abb8000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: 2f00000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8ed5c6e0 R12: ffff88802804d138 R13: dffffc0000000000 R14: ffffffff8b828d35 R15: ffff88802804c000 FS: 00007fab7c3dd6c0(0000) GS:ffff888124dd9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fab7c3dcff8 CR3: 00000000751fe000 CR4: 00000000003526f0 Call Trace: lockdep_rht_mutex_is_held+0x43/0x90 lib/rhashtable.c:51 __rhashtable_lookup include/linux/rhashtable.h:627 [inline] rhashtable_lookup include/linux/rhashtable.h:672 [inline] tipc_sk_lookup+0x196/0x920 net/tipc/socket.c:3005 tipc_sk_rcv+0x3f8/0x2b50 net/tipc/socket.c:2497 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1708 tipc_node_xmit_skb net/tipc/node.c:1773 [inline] tipc_node_distr_xmit+0x2cd/0x400 net/tipc/node.c:1788 tipc_sk_rcv+0x2539/0x2b50 net/tipc/socket.c:2506 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1708 tipc_sk_push_backlog+0x4f1/0x950 net/tipc/socket.c:1314 tipc_sk_conn_proto_rcv net/tipc/socket.c:1371 [inline] tipc_sk_proto_rcv+0xaf1/0x1810 net/tipc/socket.c:2161 tipc_sk_filter_rcv+0x2fd7/0x3210 net/tipc/socket.c:2357 tipc_sk_enqueue net/tipc/socket.c:2450 [inline] tipc_sk_rcv+0x877/0x2b50 net/tipc/socket.c:2502 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1708 tipc_node_xmit_skb net/tipc/node.c:1773 [inline] tipc_node_distr_xmit+0x2cd/0x400 net/tipc/node.c:1788 tipc_sk_backlog_rcv+0x1ad/0x270 net/tipc/socket.c:2417 sk_backlog_rcv include/net/sock.h:1190 [inline] __release_sock+0x28b/0x390 net/core/sock.c:3263 release_sock+0x190/0x260 net/core/sock.c:3862 sockopt_release_sock net/core/sock.c:1162 [inline] sk_setsockopt+0x287d/0x2f10 net/core/sock.c:1680 do_sock_setsockopt+0x11b/0x1b0 net/socket.c:2393 __sys_setsockopt net/socket.c:2422 [inline] __do_sys_setsockopt net/socket.c:2428 [inline] __se_sys_setsockopt net/socket.c:2425 [inline] __x64_sys_setsockopt+0x13d/0x1b0 net/socket.c:2425 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fab7cd9e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fab7c3dd028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fab7d026090 RCX: 00007fab7cd9e159 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007fab7ce35024 R08: 0000000000000004 R09: 0000000000000000 R10: 00002000000001c0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fab7d026128 R14: 00007fab7d026090 R15: 00007ffcbdd6c758 CPU: 0 UID: 0 PID: 6475 Comm: syz.0.196 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64 Code: 2c 90 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d d3 40 25 00 fb f4 cc 07 03 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 RSP: 0018:ffffc900044bf768 EFLAGS: 000002d3 RAX: ffffffff81771e2c RBX: 0000000000000003 RCX: ffff88802abb9f40 RDX: 0000000000000000 RSI: ffffffff8e474b17 RDI: ffffffff8c6d9480 RBP: 0000000000000003 R08: ffffffff907a177f R09: 1ffffffff20f42ef R10: dffffc0000000000 R11: fffffbfff20f42f0 R12: 0000000000000200 R13: 0000000000000000 R14: ffff8880126f0910 R15: dffffc0000000000 FS: 00007fab7c3fe6c0(0000) GS:ffff888124cd9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000100 CR3: 00000000751fe000 CR4: 00000000003526f0 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:62 [inline] kvm_wait+0x111/0x160 arch/x86/kernel/kvm.c:1098 pv_wait arch/x86/include/asm/paravirt-spinlock.h:88 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline] __pv_queued_spin_lock_slowpath+0x74a/0xbc0 kernel/locking/qspinlock.c:347 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt-spinlock.h:37 [inline] queued_spin_lock_slowpath arch/x86/include/asm/paravirt-spinlock.h:71 [inline] queued_spin_lock include/asm-generic/qspinlock.h:115 [inline] do_raw_spin_lock+0x26c/0x2f0 kernel/locking/spinlock_debug.c:116 spin_lock_bh include/linux/spinlock.h:353 [inline] lock_sock_nested+0x6a/0x100 net/core/sock.c:3849 lock_sock include/net/sock.h:1713 [inline] tipc_sendstream+0x47/0x70 net/tipc/socket.c:1550 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800 __sock_sendmsg net/socket.c:815 [inline] ____sys_sendmsg+0x54e/0x850 net/socket.c:2713 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2767 __sys_sendmsg net/socket.c:2799 [inline] __do_sys_sendmsg net/socket.c:2804 [inline] __se_sys_sendmsg net/socket.c:2802 [inline] __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2802 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fab7cd9e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fab7c3fe028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fab7d025fa0 RCX: 00007fab7cd9e159 RDX: 0000000000000941 RSI: 00002000000004c0 RDI: 0000000000000004 RBP: 00007fab7ce35024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fab7d026038 R14: 00007fab7d025fa0 R15: 00007ffcbdd6c758 report is corrupted, running repro again testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted report is corrupted, running repro again testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted report is corrupted, running repro again testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted final repro crashed as (corrupted=true): rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10500 ticks this GP) idle=cad4/1/0x4000000000000000 softirq=13015/13017 fqs=5250 rcu: hardirqs softirqs csw/system rcu: number: 5252 0 0 rcu: cputime: 96 0 52372 ==> 52500(ms) rcu: (t=10502 jiffies g=12309 q=497 ncpus=2) CPU: 0 UID: 0 PID: 5637 Comm: syz-executor359 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5913 Code: ff ff ff e8 20 29 41 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 72 54 f1 11 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 cf 2c 44 0a cc 48 8d 3d f7 34 da RSP: 0018:ffffc90003b0e490 EFLAGS: 00000296 RAX: cc9dfaf670db4500 RBX: 0000000000000000 RCX: 0000000000000201 RDX: 000000000e29fdd3 RSI: ffffffff8e6fd63b RDI: ffffffff8c6d9480 RBP: ffff888034759f40 R08: 5e00000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8ed5c6e0 R12: ffffffff8ed5c6e0 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246 FS: 00007fe1b5b736c0(0000) GS:ffff888124cd9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe1b5b72ff8 CR3: 0000000071a9c000 CR4: 00000000003526f0 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] net_generic+0x3a/0x240 include/net/netns/generic.h:45 tipc_sk_lookup+0xa6/0x920 net/tipc/socket.c:3001 tipc_sk_rcv+0x3f8/0x2b50 net/tipc/socket.c:2497 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1708 tipc_node_xmit_skb net/tipc/node.c:1773 [inline] tipc_node_distr_xmit+0x2cd/0x400 net/tipc/node.c:1788 tipc_sk_rcv+0x2539/0x2b50 net/tipc/socket.c:2506 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1708 tipc_sk_push_backlog net/tipc/socket.c:1314 [inline] tipc_sk_filter_connect net/tipc/socket.c:2260 [inline] tipc_sk_filter_rcv+0x17f3/0x3210 net/tipc/socket.c:2369 tipc_sk_enqueue net/tipc/socket.c:2450 [inline] tipc_sk_rcv+0x877/0x2b50 net/tipc/socket.c:2502 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1708 tipc_node_xmit_skb net/tipc/node.c:1773 [inline] tipc_node_distr_xmit+0x2cd/0x400 net/tipc/node.c:1788 tipc_sk_backlog_rcv+0x1ad/0x270 net/tipc/socket.c:2417 sk_backlog_rcv include/net/sock.h:1190 [inline] __release_sock+0x28b/0x390 net/core/sock.c:3263 release_sock+0x190/0x260 net/core/sock.c:3862 sockopt_release_sock net/core/sock.c:1162 [inline] sk_setsockopt+0x287d/0x2f10 net/core/sock.c:1680 do_sock_setsockopt+0x11b/0x1b0 net/socket.c:2393 __sys_setsockopt net/socket.c:2422 [inline] __do_sys_setsockopt net/socket.c:2428 [inline] __se_sys_setsockopt net/socket.c:2425 [inline] __x64_sys_setsockopt+0x13d/0x1b0 net/socket.c:2425 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe1b5bbc029 Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 d0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe1b5b731d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fe1b5b73cdc RCX: 00007fe1b5bbc029 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007fe1b5c6cb58 R08: 0000000000000004 R09: 35203a6b63617473 R10: 00002000000001c0 R11: 0000000000000246 R12: 00002000000004c0 R13: 00007fe1b5c6cb50 R14: 00007fe1b5c6cb5c R15: 0000200000000104