Extracting prog: 4m39.80630026s
Minimizing prog: 1h23m11.555464524s
Simplifying prog options: 13m13.551431428s
Extracting C: 5m13.746571509s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs: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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun-ioctl$TUNSETIFF
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, 0x0)

program crashed: INFO: rcu detected stall in corrupted
single: successfully extracted reproducer
found reproducer with 7 syscalls
minimizing guilty program
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program crashed: INFO: rcu detected stall in do_idle
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)

program did not crash
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program did not crash
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
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}}): prctl$PR_SCHED_CORE-timer_create-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program did not crash
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}}): prctl$PR_SCHED_CORE-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program did not crash
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}}): timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program did not crash
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, 0x0, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program did not crash
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program did not crash
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, 0x0, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program did not crash
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, 0x0)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program did not crash
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, 0x0, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program did not crash
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C 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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program did not crash
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
reproducing took 1h54m46.258431651s
repro crashed as (corrupted=true):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=12205, q=211 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294957862-4294947360), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g12205 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:27896 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5258 [inline]
 __schedule+0x150e/0x5070 kernel/sched/core.c:6866
 __schedule_loop kernel/sched/core.c:6948 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6963
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
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: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82
Code: 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 33 0e 21 00 f3 0f 1e fa fb f4 <e9> 48 ee 02 00 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e007d80 EFLAGS: 000002c6
RAX: bfcbcae880929300 RBX: ffffffff8197c6ba RCX: bfcbcae880929300
RDX: 0000000000000001 RSI: ffffffff8daa9dc3 RDI: ffffffff8be247e0
RBP: ffffffff8e007ea8 R08: ffff8880b86336db R09: 1ffff110170c66db
R10: dffffc0000000000 R11: ffffed10170c66dc R12: ffffffff8fc3d070
R13: 1ffffffff1c129b8 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881259dc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000080 CR3: 000000007d4aa000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:767
 default_idle_call+0x73/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:191 [inline]
 do_idle+0x1ea/0x520 kernel/sched/idle.c:332
 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:430
 rest_init+0x2de/0x300 init/main.c:758
 start_kernel+0x3ac/0x400 init/main.c:1208
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x147
 </TASK>

report is corrupted, running repro again
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program crashed: INFO: rcu detected stall in corrupted
report is corrupted, running repro again
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program crashed: INFO: rcu detected stall in corrupted
report is corrupted, running repro again
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}}): prctl$PR_SCHED_CORE-timer_create-prlimit64-sched_setscheduler-timer_settime-openat$tun
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
timer_create(0x0, &(0x7f0000000080)={0x0, 0x11, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000000))
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x9, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8)
timer_settime(0x0, 0x0, &(0x7f0000000240)={{0x0, 0x8}, {0x0, 0x9}}, 0x0)
openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)

program crashed: INFO: rcu detected stall in batadv_iv_send_outstanding_bat_ogm_packet
final repro crashed as (corrupted=false):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P3511/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=14897, q=649 ncpus=2)
task:kworker/u8:11   state:R  running task     stack:20392 pid:3511  tgid:3511  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5258 [inline]
 __schedule+0x150e/0x5070 kernel/sched/core.c:6866
 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7193
 irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x16c/0x340 kernel/locking/lockdep.c:5872
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 44 91 25 11 <48> 3b 44 24 58 0f 85 e5 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc9000c3af7e0 EFLAGS: 00000206
RAX: e216ea980ceba900 RBX: 0000000000000000 RCX: e216ea980ceba900
RDX: 00000000dfb2460f RSI: ffffffff8dc93c7b RDI: ffffffff8be247e0
RBP: ffffffff8b302bd0 R08: ffffffff8b302bd0 R09: ffffffff8e33f2e0
R10: dffffc0000000000 R11: ffffed1005f68317 R12: 0000000000000002
R13: ffffffff8e33f2e0 R14: 0000000000000000 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:867 [inline]
 batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:761 [inline]
 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:833 [inline]
 batadv_iv_ogm_schedule+0x454/0xf00 net/batman-adv/bat_iv_ogm.c:873
 batadv_iv_send_outstanding_bat_ogm_packet+0x6c6/0x7e0 net/batman-adv/bat_iv_ogm.c:1709
 process_one_work+0x93a/0x15a0 kernel/workqueue.c:3279
 process_scheduled_works kernel/workqueue.c:3362 [inline]
 worker_thread+0x9b0/0xee0 kernel/workqueue.c:3443
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
rcu: rcu_preempt kthread starved for 10526 jiffies! g14897 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:27600 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5258 [inline]
 __schedule+0x150e/0x5070 kernel/sched/core.c:6866
 __schedule_loop kernel/sched/core.c:6948 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6963
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82
Code: 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 33 0e 21 00 f3 0f 1e fa fb f4 <e9> 48 ee 02 00 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e007d80 EFLAGS: 000002c6
RAX: 48af62f625ae1700 RBX: ffffffff8197c6ba RCX: 48af62f625ae1700
RDX: 0000000000000001 RSI: ffffffff8daa9dc3 RDI: ffffffff8be247e0
RBP: ffffffff8e007ea8 R08: ffff8880b86336db R09: 1ffff110170c66db
R10: dffffc0000000000 R11: ffffed10170c66dc R12: ffffffff8fc3d070
R13: 1ffffffff1c129b8 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881259dc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556326331c68 CR3: 000000007a454000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:767
 default_idle_call+0x73/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:191 [inline]
 do_idle+0x1ea/0x520 kernel/sched/idle.c:332
 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:430
 rest_init+0x2de/0x300 init/main.c:758
 start_kernel+0x3ac/0x400 init/main.c:1208
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x147
 </TASK>