Extracting prog: 5m19.992158502s Minimizing prog: 55m24.987469753s Simplifying prog options: 0s Extracting C: 2m41.689495362s Simplifying C: 20m44.080366345s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f0000000040), 0x4) (async) sendmsg$tipc(r1, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) (rerun: 32) program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f0000000040), 0x4) (async) sendmsg$tipc(r1, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) (rerun: 32) 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:6 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$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f0000000040), 0x4) (async) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r0, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) (rerun: 32) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): setsockopt$sock_attach_bpf-sendmsg$tipc detailed listing: executing program 0: setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x1, 0x21, &(0x7f0000000040), 0x4) (async) sendmsg$tipc(0xffffffffffffffff, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) (rerun: 32) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f0000000040), 0x4) sendmsg$tipc(r1, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, 0x0) setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x1, 0x21, &(0x7f0000000040), 0x4) (async) sendmsg$tipc(0xffffffffffffffff, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) (rerun: 32) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, 0x0, 0x0) (async) sendmsg$tipc(r1, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) (rerun: 32) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f0000000040), 0x4) sendmsg$tipc(r1, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) (rerun: 32) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f0000000040), 0x4) (async) sendmsg$tipc(r1, 0x0, 0x0) (rerun: 32) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f0000000040), 0x4) (async) sendmsg$tipc(r1, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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-sendmsg$tipc program crashed: INFO: rcu detected stall in corrupted simplifying C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc 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$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc 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$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc 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$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc 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$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f0000000040), 0x4) (async) sendmsg$tipc(r1, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) (rerun: 32) 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$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f0000000040), 0x4) (async) sendmsg$tipc(r1, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) (rerun: 32) 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$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f0000000040), 0x4) (async) sendmsg$tipc(r1, &(0x7f0000001000)={0x0, 0x0, 0x0}, 0x0) (rerun: 32) program crashed: INFO: rcu detected stall in corrupted validation run: crashed=true reproducing took 1h33m8.364846734s repro crashed as (corrupted=true): rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-...!: (10501 ticks this GP) idle=e8a4/1/0x4000000000000000 softirq=30113/30113 fqs=41 rcu: (t=10502 jiffies g=31313 q=27 ncpus=2) rcu: rcu_preempt kthread timer wakeup didn't happen for 10420 jiffies! g31313 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=6576 rcu: rcu_preempt kthread starved for 10423 jiffies! g31313 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:27688 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1840/0x57a0 kernel/sched/core.c:7189 __schedule_loop kernel/sched/core.c:7268 [inline] schedule+0x164/0x360 kernel/sched/core.c:7283 schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2095 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297 kthread+0x389/0x470 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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 11257 Comm: syz.0.1825 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63 Code: bb 83 02 e9 0e 00 6e f5 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 83 22 27 00 fb f4 e7 ff 6d f5 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 RSP: 0018:ffffc90002f8f988 EFLAGS: 000002d3 RAX: ffffffff8175d45a RBX: 0000000000000003 RCX: ffff8880318f3e00 RDX: 0000000000000000 RSI: ffffffff8dfa1cc7 RDI: ffffffff8c2899a0 RBP: 0000000000000003 R08: ffffffff902f88f7 R09: 1ffffffff205f11e R10: dffffc0000000000 R11: fffffbfff205f11f R12: 0000000000000200 R13: 0000000000000000 R14: ffff88802af93490 R15: dffffc0000000000 FS: 000055556cea3500(0000) GS:ffff8881252b9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d224220 CR3: 000000007ae6b000 CR4: 0000000000350ef0 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:62 [inline] kvm_wait+0x10f/0x150 arch/x86/kernel/kvm.c:1095 pv_wait arch/x86/include/asm/paravirt-spinlock.h:83 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline] __pv_queued_spin_lock_slowpath+0x74a/0xbc0 kernel/locking/qspinlock.c:325 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt-spinlock.h:35 [inline] queued_spin_lock_slowpath arch/x86/include/asm/paravirt-spinlock.h:66 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x26c/0x2f0 kernel/locking/spinlock_debug.c:116 spin_lock_bh include/linux/spinlock.h:348 [inline] lock_sock_nested+0x6a/0x100 net/core/sock.c:3811 lock_sock include/net/sock.h:1713 [inline] tipc_release+0xc4/0x2510 net/tipc/socket.c:637 __sock_release net/socket.c:722 [inline] sock_close+0xad/0x220 net/socket.c:1515 __fput+0x418/0xa50 fs/file_table.c:510 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] exit_to_user_mode_loop+0x193/0x6b0 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1316b9ce59 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:00007ffc82d80d18 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f1316e17da0 RCX: 00007f1316b9ce59 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f1316e17da0 R08: 0000000000000006 R09: 0000000000000000 R10: 00007f1316e17cb0 R11: 0000000000000246 R12: 000000000002af77 R13: 00007f1316e1609c R14: 000000000002ac6a R15: 00007f1316e16090 CPU: 1 UID: 0 PID: 11258 Comm: syz.0.1825 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:rcu_read_unlock include/linux/rcupdate.h:867 [inline] RIP: 0010:net_generic+0x158/0x240 include/net/netns/generic.h:48 Code: 38 00 74 08 4c 89 f7 e8 c6 ef ee f6 4d 8b 36 e8 5e bc 60 00 89 c5 31 ff 89 c6 e8 43 b6 83 f6 85 ed 74 10 e8 da d5 68 f6 84 c0 <74> 0e e8 f1 b1 83 f6 eb 7f e8 ea b1 83 f6 eb 78 e8 33 bc 60 00 89 RSP: 0018:ffffc9000305e4d0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff8b418cfe RCX: 0000000000000202 RDX: ffff888030da3e00 RSI: ffffffff8c289980 RDI: ffffffff8c289940 RBP: 0000000000000001 R08: ffffffff8b418cfe R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8e95c780 R12: ffff88807d472000 R13: dffffc0000000000 R14: ffff888032c9c000 R15: dffffc0000000000 FS: 00007f1317a116c0(0000) GS:ffff8881253b9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000000 CR3: 000000007ae6b000 CR4: 0000000000350ef0 Call Trace: tipc_sk_lookup+0xa6/0x920 net/tipc/socket.c:2996 tipc_sk_rcv+0x3f8/0x2b50 net/tipc/socket.c:2492 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x2cd/0x400 net/tipc/node.c:1781 tipc_sk_rcv+0x2539/0x2b50 net/tipc/socket.c:2501 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1701 tipc_sk_push_backlog net/tipc/socket.c:1312 [inline] tipc_sk_filter_connect net/tipc/socket.c:2255 [inline] tipc_sk_filter_rcv+0x17ee/0x3210 net/tipc/socket.c:2364 tipc_sk_enqueue net/tipc/socket.c:2445 [inline] tipc_sk_rcv+0x877/0x2b50 net/tipc/socket.c:2497 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x2cd/0x400 net/tipc/node.c:1781 tipc_sk_backlog_rcv+0x1ad/0x270 net/tipc/socket.c:2412 sk_backlog_rcv include/net/sock.h:1190 [inline] __release_sock+0x28b/0x390 net/core/sock.c:3225 release_sock+0x190/0x260 net/core/sock.c:3824 sockopt_release_sock net/core/sock.c:1163 [inline] sk_setsockopt+0x287d/0x2f10 net/core/sock.c:1681 do_sock_setsockopt+0x11b/0x1b0 net/socket.c:2378 __sys_setsockopt net/socket.c:2407 [inline] __do_sys_setsockopt net/socket.c:2413 [inline] __se_sys_setsockopt net/socket.c:2410 [inline] __x64_sys_setsockopt+0x13d/0x1b0 net/socket.c:2410 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1316b9ce59 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:00007f1317a11028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f1316e15fa0 RCX: 00007f1316b9ce59 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007f1316c32d6f R08: 0000000000000004 R09: 0000000000000000 R10: 0000200000000040 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1316e16038 R14: 00007f1316e15fa0 R15: 00007ffc82d80bb8 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$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc 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$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc program crashed: INFO: rcu detected stall in corrupted report is corrupted, running repro again testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-setsockopt$sock_attach_bpf-sendmsg$tipc 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-....: (1 GPs behind) idle=aadc/1/0x4000000000000000 softirq=13450/13452 fqs=5246 rcu: hardirqs softirqs csw/system rcu: number: 5398 0 0 rcu: cputime: 186 0 52303 ==> 52490(ms) rcu: (t=10500 jiffies g=13277 q=215 ncpus=2) CPU: 0 UID: 0 PID: 5769 Comm: syz-executor301 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:104 [inline] RIP: 0010:__local_bh_enable_ip+0xd8/0x130 kernel/softirq.c:457 Code: 8b e8 9c e0 1a 0a 65 66 8b 05 cc ed ae 11 66 85 c0 75 32 bf 01 00 00 00 e8 75 f3 0b 00 e8 80 ec 45 00 fb 65 8b 05 a8 ed ae 11 <85> c0 75 05 e8 6f e8 ab ff 5b 41 5e e9 72 be 88 ff cc 90 0f 0b 90 RSP: 0018:ffffc9000321e5c8 EFLAGS: 00000202 RAX: 0000000000000201 RBX: 0000000000000201 RCX: 0000000000000201 RDX: 0000000000000002 RSI: ffffffff8dfa1cc7 RDI: ffffffff8c2899a0 RBP: ffffc9000321e8f0 R08: ffffffff902f88f7 R09: 1ffffffff205f11e R10: dffffc0000000000 R11: fffffbfff205f11f R12: ffff888020fa95c0 R13: ffffc9000321eb60 R14: ffffffff8b4153a0 R15: 000000002728f9a2 FS: 00007f67f73136c0(0000) GS:ffff8881252b9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000000 CR3: 0000000025d1e000 CR4: 0000000000350ef0 Call Trace: __raw_spin_trylock_bh include/linux/spinlock_api_smp.h:207 [inline] _raw_spin_trylock_bh+0x60/0x70 kernel/locking/spinlock.c:150 spin_trylock_bh include/linux/spinlock.h:414 [inline] tipc_sk_rcv+0x420/0x2b50 net/tipc/socket.c:2496 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x2cd/0x400 net/tipc/node.c:1781 tipc_sk_rcv+0x2539/0x2b50 net/tipc/socket.c:2501 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1701 tipc_sk_push_backlog net/tipc/socket.c:1312 [inline] tipc_sk_filter_connect net/tipc/socket.c:2255 [inline] tipc_sk_filter_rcv+0x17ee/0x3210 net/tipc/socket.c:2364 tipc_sk_enqueue net/tipc/socket.c:2445 [inline] tipc_sk_rcv+0x877/0x2b50 net/tipc/socket.c:2497 tipc_node_xmit+0x205/0xf10 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x2cd/0x400 net/tipc/node.c:1781 tipc_sk_backlog_rcv+0x1ad/0x270 net/tipc/socket.c:2412 sk_backlog_rcv include/net/sock.h:1190 [inline] __release_sock+0x28b/0x390 net/core/sock.c:3225 release_sock+0x190/0x260 net/core/sock.c:3824 sockopt_release_sock net/core/sock.c:1163 [inline] sk_setsockopt+0x287d/0x2f10 net/core/sock.c:1681 do_sock_setsockopt+0x11b/0x1b0 net/socket.c:2378 __sys_setsockopt net/socket.c:2407 [inline] __do_sys_setsockopt net/socket.c:2413 [inline] __se_sys_setsockopt net/socket.c:2410 [inline] __x64_sys_setsockopt+0x13d/0x1b0 net/socket.c:2410 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f67f733b029 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:00007f67f73131d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f67f7313cdc RCX: 00007f67f733b029 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007f67f73ebb48 R08: 0000000000000004 R09: 35203a6b63617473 R10: 0000200000000040 R11: 0000000000000246 R12: 0000200000001000 R13: 00007f67f73ebb40 R14: 00007f67f73ebb4c R15: 0000200000000004