Extracting prog: 4m27.54149114s Minimizing prog: 50m25.592734551s Simplifying prog options: 0s Extracting C: 2m49.878343163s Simplifying C: 20m3.030383467s 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:4 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$sock_attach_bpf-recvmsg detailed listing: executing program 0: socketpair$tipc(0x1e, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) recvmsg(r0, 0x0, 0x160) failed to symbolize report: failed to start scripts/get_maintainer.pl [scripts/get_maintainer.pl --git-min-percent=15 -f arch/x86/kernel/process.c]: fork/exec scripts/get_maintainer.pl: no such file or directory program crashed: INFO: rcu detected stall in corrupted single: successfully extracted reproducer found reproducer with 4 syscalls minimizing guilty program testing program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) failed to symbolize report: failed to start scripts/get_maintainer.pl [scripts/get_maintainer.pl --git-min-percent=15 -f arch/x86/kernel/process.c]: fork/exec scripts/get_maintainer.pl: no such file or directory program crashed: INFO: rcu detected stall in corrupted testing program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) (async, rerun: 64) program did not crash testing program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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, &(0x7f00000001c0), 0x4) program did not crash testing program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$tipc(0xffffffffffffffff, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) (async, rerun: 64) setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x1, 0x21, &(0x7f00000001c0), 0x4) program did not crash testing program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) program did not crash testing program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$tipc(0xffffffffffffffff, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) (async, rerun: 64) setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x1, 0x21, &(0x7f00000001c0), 0x4) program did not crash testing program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, 0x0, 0x0) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) program did not crash testing program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) (rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) program did not crash testing program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) (async) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) program did not crash testing program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, 0x0, 0x0) program crashed: lost connection to test machine suppressed program crash: lost connection to test machine extracting C reproducer testing compiled C program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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$sock_attach_bpf failed to symbolize report: failed to start scripts/get_maintainer.pl [scripts/get_maintainer.pl --git-min-percent=15 -f arch/x86/kernel/process.c]: fork/exec scripts/get_maintainer.pl: no such file or directory program crashed: INFO: rcu detected stall in corrupted simplifying C reproducer testing compiled C program (duration=5m30.078422776s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$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=5m30.078422776s, {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$sock_attach_bpf failed to symbolize report: failed to start scripts/get_maintainer.pl [scripts/get_maintainer.pl --git-min-percent=15 -f arch/x86/kernel/process.c]: fork/exec scripts/get_maintainer.pl: no such file or directory program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf failed to symbolize report: failed to start scripts/get_maintainer.pl [scripts/get_maintainer.pl --git-min-percent=15 -f arch/x86/kernel/process.c]: fork/exec scripts/get_maintainer.pl: no such file or directory program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=5m30.078422776s, {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$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=5m30.078422776s, {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$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted testing compiled C program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf program crashed: INFO: rcu detected stall in corrupted testing program (duration=5m30.078422776s, {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, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) program crashed: INFO: rcu detected stall in corrupted validation run: crashed=true testing program (duration=5m30.078422776s, {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, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) failed to symbolize report: failed to start scripts/get_maintainer.pl [scripts/get_maintainer.pl --git-min-percent=15 -f arch/x86/kernel/process.c]: fork/exec scripts/get_maintainer.pl: no such file or directory program crashed: INFO: rcu detected stall in corrupted validation run: crashed=true testing program (duration=5m30.078422776s, {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, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$tipc(r1, &(0x7f0000002700)={0x0, 0x0, 0x0}, 0x0) (async, rerun: 64) setsockopt$sock_attach_bpf(r0, 0x1, 0x21, &(0x7f00000001c0), 0x4) failed to symbolize report: failed to start scripts/get_maintainer.pl [scripts/get_maintainer.pl --git-min-percent=15 -f arch/x86/kernel/process.c]: fork/exec scripts/get_maintainer.pl: no such file or directory program crashed: INFO: rcu detected stall in corrupted validation run: crashed=true reproducing took 1h25m23.756261513s repro crashed as (corrupted=true): rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-...!: (10499 ticks this GP) idle=8dac/1/0x4000000000000000 softirq=15750/15750 fqs=1 rcu: (t=10500 jiffies g=11641 q=133 ncpus=2) rcu: rcu_preempt kthread timer wakeup didn't happen for 10497 jiffies! g11641 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=1 timer-softirq=3668 rcu: rcu_preempt kthread starved for 10498 jiffies! g11641 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:27816 pid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5393 [inline] __schedule+0x156f/0x4720 kernel/sched/core.c:6722 schedule+0xbd/0x170 kernel/sched/core.c:6796 schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168 rcu_gp_fqs_loop+0x30d/0x15e0 kernel/rcu/tree.c:1667 rcu_gp_kthread+0x9e/0x400 kernel/rcu/tree.c:1866 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6085 Comm: syz.0.49 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 RIP: 0010:pv_native_safe_halt+0xf/0x10 arch/x86/kernel/paravirt.c:148 Code: f1 33 02 c3 cc cc cc cc cc cc cc f3 0f 1e fa 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 66 90 0f 00 2d e3 61 50 00 fb f4 66 0f 1f 00 55 41 57 41 56 41 54 53 50 8b 2f eb 2c 89 cb 80 f9 RSP: 0018:ffffc90003507718 EFLAGS: 000002d3 RAX: ffffffff813b5538 RBX: 0000000000000003 RCX: ffff888024913c00 RDX: 0000000000000000 RSI: ffffffff8aead140 RDI: ffffffff8b3c5260 RBP: ffffc900035077f0 R08: ffffffff9222361f R09: 1ffffffff24446c3 R10: dffffc0000000000 R11: fffffbfff24446c4 R12: dffffc0000000000 R13: 0000000000000200 R14: 0000000000000003 R15: 1ffff920006a0ee8 FS: 00007fcac28646c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000000 CR3: 0000000076275000 CR4: 00000000003506e0 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:108 [inline] kvm_wait+0x23d/0x2a0 arch/x86/kernel/kvm.c:1058 pv_wait arch/x86/include/asm/paravirt.h:598 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x613/0x9c0 kernel/locking/qspinlock.c:511 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:586 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x23e/0x2b0 kernel/locking/spinlock_debug.c:115 spin_lock_bh include/linux/spinlock.h:356 [inline] lock_sock_nested+0x6a/0x100 net/core/sock.c:3569 lock_sock include/net/sock.h:1784 [inline] tipc_sendstream+0x47/0x70 net/tipc/socket.c:1554 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x61b/0x980 net/socket.c:2595 ___sys_sendmsg+0x2a6/0x360 net/socket.c:2649 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2687 [inline] __se_sys_sendmsg+0x1d0/0x2c0 net/socket.c:2685 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fcac19a8f19 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:00007fcac2864028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fcac1c25fa0 RCX: 00007fcac19a8f19 RDX: 0000000000000000 RSI: 0000200000002700 RDI: 0000000000000004 RBP: 00007fcac1a37f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fcac1c26038 R14: 00007fcac1c25fa0 R15: 00007ffc4f29dd78 CPU: 0 PID: 6086 Comm: syz.0.49 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 RIP: 0010:lock_acquire+0x208/0x420 kernel/locking/lockdep.c:5794 Code: f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 3c 04 f8 0f 85 f0 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 43 c7 44 3c 08 00 00 00 00 65 48 8b 04 25 RSP: 0018:ffffc900034f6260 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 6e7cd7f2a7b72e00 RDX: 0000000000000000 RSI: ffffffff8aeae2c0 RDI: ffffffff8b3c5260 RBP: ffffc900034f6368 R08: dffffc0000000000 R09: 1ffffffff24446a0 R10: dffffc0000000000 R11: fffffbfff24446a1 R12: 1ffff9200069ec58 R13: ffffffff8e1322e0 R14: 0000000000000246 R15: dffffc0000000000 FS: 00007fcac28436c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcac2842ff8 CR3: 0000000076275000 CR4: 00000000003506f0 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:334 [inline] rcu_read_lock include/linux/rcupdate.h:786 [inline] tipc_sk_lookup+0xda/0x920 net/tipc/socket.c:3009 tipc_sk_rcv+0x3f9/0x2ae0 net/tipc/socket.c:2501 tipc_node_xmit+0x22f/0x1040 net/tipc/node.c:1710 tipc_node_xmit_skb net/tipc/node.c:1775 [inline] tipc_node_distr_xmit+0x2cb/0x3f0 net/tipc/node.c:1790 tipc_sk_rcv+0x2562/0x2ae0 net/tipc/socket.c:2510 tipc_node_xmit+0x22f/0x1040 net/tipc/node.c:1710 tipc_sk_push_backlog+0x4f1/0x920 net/tipc/socket.c:1318 tipc_sk_conn_proto_rcv net/tipc/socket.c:1375 [inline] tipc_sk_proto_rcv+0xae3/0x17d0 net/tipc/socket.c:2165 tipc_sk_filter_rcv+0x2e6a/0x3090 net/tipc/socket.c:2361 tipc_sk_enqueue net/tipc/socket.c:2454 [inline] tipc_sk_rcv+0x8c5/0x2ae0 net/tipc/socket.c:2506 tipc_node_xmit+0x22f/0x1040 net/tipc/node.c:1710 tipc_node_xmit_skb net/tipc/node.c:1775 [inline] tipc_node_distr_xmit+0x2cb/0x3f0 net/tipc/node.c:1790 tipc_sk_backlog_rcv+0x1ae/0x270 net/tipc/socket.c:2421 sk_backlog_rcv include/net/sock.h:1146 [inline] __release_sock+0x1ea/0x460 net/core/sock.c:3042 release_sock+0x5f/0x1c0 net/core/sock.c:3581 sockopt_release_sock net/core/sock.c:1075 [inline] sk_setsockopt+0x25fa/0x2b20 net/core/sock.c:1561 do_sock_setsockopt+0x11b/0x1a0 net/socket.c:2318 __sys_setsockopt net/socket.c:2345 [inline] __do_sys_setsockopt net/socket.c:2354 [inline] __se_sys_setsockopt net/socket.c:2351 [inline] __x64_sys_setsockopt+0x182/0x200 net/socket.c:2351 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fcac19a8f19 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:00007fcac2843028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fcac1c26090 RCX: 00007fcac19a8f19 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007fcac1a37f6d R08: 0000000000000004 R09: 0000000000000000 R10: 00002000000001c0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fcac1c26128 R14: 00007fcac1c26090 R15: 00007ffc4f29dd78 report is corrupted, running repro again testing compiled C program (duration=5m30.078422776s, {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$sock_attach_bpf failed to symbolize report: failed to start scripts/get_maintainer.pl [scripts/get_maintainer.pl --git-min-percent=15 -f arch/x86/kernel/process.c]: fork/exec scripts/get_maintainer.pl: no such file or directory program crashed: INFO: rcu detected stall in corrupted report is corrupted, running repro again testing compiled C program (duration=5m30.078422776s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$tipc-sendmsg$tipc-setsockopt$sock_attach_bpf failed to symbolize report: failed to start scripts/get_maintainer.pl [scripts/get_maintainer.pl --git-min-percent=15 -f arch/x86/kernel/process.c]: fork/exec scripts/get_maintainer.pl: no such file or directory program crashed: INFO: rcu detected stall in corrupted report is corrupted, running repro again testing compiled C program (duration=5m30.078422776s, {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 failed to symbolize report: failed to start scripts/get_maintainer.pl [scripts/get_maintainer.pl --git-min-percent=15 -f arch/x86/kernel/process.c]: fork/exec scripts/get_maintainer.pl: no such file or directory program crashed: INFO: rcu detected stall in corrupted final repro crashed as (corrupted=true): rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-...!: (1 GPs behind) idle=54fc/1/0x4000000000000000 softirq=10105/10108 fqs=0 rcu: (t=10500 jiffies g=9001 q=96 ncpus=2) rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g9001 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=5472 rcu: rcu_preempt kthread starved for 10500 jiffies! g9001 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:26824 pid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5393 [inline] __schedule+0x156f/0x4720 kernel/sched/core.c:6722 schedule+0xbd/0x170 kernel/sched/core.c:6796 schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168 rcu_gp_fqs_loop+0x30d/0x15e0 kernel/rcu/tree.c:1667 rcu_gp_kthread+0x9e/0x400 kernel/rcu/tree.c:1866 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5969 Comm: syz-executor690 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:33 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:89 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:107 [inline] RIP: 0010:lock_release+0x149/0x8c0 kernel/locking/lockdep.c:5806 Code: 74 24 10 43 c6 44 2f 08 00 48 c7 84 24 a0 00 00 00 00 00 00 00 9c 8f 84 24 a0 00 00 00 48 8b 84 24 a0 00 00 00 48 89 44 24 50 <43> c6 44 2f 08 f8 fa 48 c7 c7 20 de ea 8a e8 04 96 2e 09 65 ff 05 RSP: 0018:ffffc900047ee220 EFLAGS: 00000246 RAX: 0000000000000246 RBX: ffff88807c3964e4 RCX: 50f0e79f16cb3300 RDX: 0000000000000000 RSI: ffffffff8b3c5240 RDI: ffffffff8b3c5200 RBP: ffffc900047ee340 R08: ffffffff8f8dda6f R09: 1ffffffff1f1bb4d R10: dffffc0000000000 R11: fffffbfff1f1bb4e R12: ffffffff8a3288fe R13: dffffc0000000000 R14: ffff88807c395a00 R15: 1ffff920008fdc50 FS: 00007fbee59856c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbee5984bb0 CR3: 0000000075f10000 CR4: 00000000003506f0 Call Trace: rcu_lock_release include/linux/rcupdate.h:344 [inline] rcu_read_unlock include/linux/rcupdate.h:819 [inline] net_generic+0x1f4/0x240 include/net/netns/generic.h:48 tipc_sk_lookup+0xaa/0x920 net/tipc/socket.c:3006 tipc_sk_rcv+0x3f9/0x2ae0 net/tipc/socket.c:2501 tipc_node_xmit+0x22f/0x1040 net/tipc/node.c:1710 tipc_node_xmit_skb net/tipc/node.c:1775 [inline] tipc_node_distr_xmit+0x2cb/0x3f0 net/tipc/node.c:1790 tipc_sk_rcv+0x2562/0x2ae0 net/tipc/socket.c:2510 tipc_node_xmit+0x22f/0x1040 net/tipc/node.c:1710 tipc_sk_push_backlog+0x4f1/0x920 net/tipc/socket.c:1318 tipc_sk_conn_proto_rcv net/tipc/socket.c:1375 [inline] tipc_sk_proto_rcv+0xae3/0x17d0 net/tipc/socket.c:2165 tipc_sk_filter_rcv+0x2e6a/0x3090 net/tipc/socket.c:2361 tipc_sk_enqueue net/tipc/socket.c:2454 [inline] tipc_sk_rcv+0x8c5/0x2ae0 net/tipc/socket.c:2506 tipc_node_xmit+0x22f/0x1040 net/tipc/node.c:1710 tipc_node_xmit_skb net/tipc/node.c:1775 [inline] tipc_node_distr_xmit+0x2cb/0x3f0 net/tipc/node.c:1790 tipc_sk_backlog_rcv+0x1ae/0x270 net/tipc/socket.c:2421 sk_backlog_rcv include/net/sock.h:1146 [inline] __release_sock+0x1ea/0x460 net/core/sock.c:3042 release_sock+0x5f/0x1c0 net/core/sock.c:3581 sockopt_release_sock net/core/sock.c:1075 [inline] sk_setsockopt+0x25fa/0x2b20 net/core/sock.c:1561 do_sock_setsockopt+0x11b/0x1a0 net/socket.c:2318 __sys_setsockopt net/socket.c:2345 [inline] __do_sys_setsockopt net/socket.c:2354 [inline] __se_sys_setsockopt net/socket.c:2351 [inline] __x64_sys_setsockopt+0x182/0x200 net/socket.c:2351 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fbee59c6029 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:00007fbee5985218 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fbee5985cdc RCX: 00007fbee59c6029 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007fbee5a76b58 R08: 0000000000000004 R09: 35203a6b63617473 R10: 00002000000001c0 R11: 0000000000000246 R12: 0000200000002700 R13: 00007fbee5a76b50 R14: 00007fbee5a76b5c R15: 0000200000000004 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.086 msecs Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5969 Comm: syz-executor690 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 RIP: 0010:__lock_acquire+0x109e/0x7eb0 kernel/locking/lockdep.c:-1 Code: 38 80 e1 07 80 c1 03 38 c1 7c c7 48 8b 7c 24 38 e8 a7 f3 77 00 eb bb 44 89 e0 25 ff 1f 00 00 41 c1 ec 03 41 81 e4 00 60 00 00 <41> 09 c4 4c 89 fe 48 c1 ee 20 89 f0 c1 c0 04 41 29 f4 44 31 e0 44 RSP: 0018:ffffc900047edfa0 EFLAGS: 00000006 RAX: 0000000000000021 RBX: 000000000006865d RCX: ffffffff8168f18d RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92223500 RBP: ffffc900047ee1e8 R08: dffffc0000000000 R09: 1ffffffff24446a0 R10: dffffc0000000000 R11: fffffbfff24446a1 R12: 0000000000004000 R13: ffff88807c395a00 R14: ffff88807c3964d8 R15: 1ac803ebebc0c535 FS: 00007fbee59856c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbee5984bb0 CR3: 0000000075f10000 CR4: 00000000003506f0 Call Trace: lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5790 rcu_lock_acquire include/linux/rcupdate.h:334 [inline] rcu_read_lock include/linux/rcupdate.h:786 [inline] net_generic+0x3a/0x240 include/net/netns/generic.h:45 tipc_sk_lookup+0xaa/0x920 net/tipc/socket.c:3006 tipc_sk_rcv+0x3f9/0x2ae0 net/tipc/socket.c:2501 tipc_node_xmit+0x22f/0x1040 net/tipc/node.c:1710 tipc_node_xmit_skb net/tipc/node.c:1775 [inline] tipc_node_distr_xmit+0x2cb/0x3f0 net/tipc/node.c:1790 tipc_sk_rcv+0x2562/0x2ae0 net/tipc/socket.c:2510 tipc_node_xmit+0x22f/0x1040 net/tipc/node.c:1710 tipc_sk_push_backlog+0x4f1/0x920 net/tipc/socket.c:1318 tipc_sk_conn_proto_rcv net/tipc/socket.c:1375 [inline] tipc_sk_proto_rcv+0xae3/0x17d0 net/tipc/socket.c:2165 tipc_sk_filter_rcv+0x2e6a/0x3090 net/tipc/socket.c:2361 tipc_sk_enqueue net/tipc/socket.c:2454 [inline] tipc_sk_rcv+0x8c5/0x2ae0 net/tipc/socket.c:2506 tipc_node_xmit+0x22f/0x1040 net/tipc/node.c:1710 tipc_node_xmit_skb net/tipc/node.c:1775 [inline] tipc_node_distr_xmit+0x2cb/0x3f0 net/tipc/node.c:1790 tipc_sk_backlog_rcv+0x1ae/0x270 net/tipc/socket.c:2421 sk_backlog_rcv include/net/sock.h:1146 [inline] __release_sock+0x1ea/0x460 net/core/sock.c:3042 release_sock+0x5f/0x1c0 net/core/sock.c:3581 sockopt_release_sock net/core/sock.c:1075 [inline] sk_setsockopt+0x25fa/0x2b20 net/core/sock.c:1561 do_sock_setsockopt+0x11b/0x1a0 net/socket.c:2318 __sys_setsockopt net/socket.c:2345 [inline] __do_sys_setsockopt net/socket.c:2354 [inline] __se_sys_setsockopt net/socket.c:2351 [inline] __x64_sys_setsockopt+0x182/0x200 net/socket.c:2351 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fbee59c6029 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:00007fbee5985218 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fbee5985cdc RCX: 00007fbee59c6029 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 00007fbee5a76b58 R08: 0000000000000004 R09: 35203a6b63617473 R10: 00002000000001c0 R11: 0000000000000246 R12: 0000200000002700 R13: 00007fbee5a76b50 R14: 00007fbee5a76b5c R15: 0000200000000004 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.105 msecs CPU: 1 PID: 5968 Comm: syz-executor690 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 RIP: 0010:pv_native_safe_halt+0xf/0x10 arch/x86/kernel/paravirt.c:148 Code: f1 33 02 c3 cc cc cc cc cc cc cc f3 0f 1e fa 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 66 90 0f 00 2d e3 61 50 00 fb f4 66 0f 1f 00 55 41 57 41 56 41 54 53 50 8b 2f eb 2c 89 cb 80 f9 RSP: 0018:ffffc900047df718 EFLAGS: 000002d3 RAX: ffffffff813b5538 RBX: 0000000000000003 RCX: ffff88807c393c00 RDX: 0000000000000000 RSI: ffffffff8aead140 RDI: ffffffff8b3c5260 RBP: ffffc900047df7f0 R08: ffffffff922235cf R09: 1ffffffff24446b9 R10: dffffc0000000000 R11: fffffbfff24446ba R12: dffffc0000000000 R13: 0000000000000200 R14: 0000000000000003 R15: 1ffff920008fbee8 FS: 00007fbee59a66c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002700 CR3: 0000000075f10000 CR4: 00000000003506e0 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:108 [inline] kvm_wait+0x23d/0x2a0 arch/x86/kernel/kvm.c:1058 pv_wait arch/x86/include/asm/paravirt.h:598 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x613/0x9c0 kernel/locking/qspinlock.c:511 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:586 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x23e/0x2b0 kernel/locking/spinlock_debug.c:115 spin_lock_bh include/linux/spinlock.h:356 [inline] lock_sock_nested+0x6a/0x100 net/core/sock.c:3569 lock_sock include/net/sock.h:1784 [inline] tipc_sendstream+0x47/0x70 net/tipc/socket.c:1554 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x61b/0x980 net/socket.c:2595 ___sys_sendmsg+0x2a6/0x360 net/socket.c:2649 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2687 [inline] __se_sys_sendmsg+0x1d0/0x2c0 net/socket.c:2685 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fbee59c6029 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:00007fbee59a6218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000000002b RCX: 00007fbee59c6029 RDX: 0000000000000000 RSI: 0000200000002700 RDI: 0000000000000004 RBP: 00007fbee5a76b48 R08: 35203a6b63617473 R09: 35203a6b63617473 R10: 35203a6b63617473 R11: 0000000000000246 R12: 0000200000002700 R13: 00007fbee5a76b40 R14: 00007fbee5a76b4c R15: 0000200000000004