Extracting prog: 5m59.650091181s
Minimizing prog: 1h22m31.055302833s
Simplifying prog options: 6m36.39028682s
Extracting C: 3m36.36962696s
Simplifying C: 1h12m7.860765002s


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: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}}): prlimit64-sched_setscheduler-sched_setaffinity-fsmount-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
sched_setaffinity(0x0, 0x0, 0x0)
fsmount(0xffffffffffffffff, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

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: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}}): prlimit64-sched_setscheduler-sched_setaffinity-fsmount-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
sched_setaffinity(0x0, 0x0, 0x0)
fsmount(0xffffffffffffffff, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

program crashed: INFO: rcu detected stall in corrupted
single: successfully extracted reproducer
found reproducer with 8 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}}): prlimit64-sched_setscheduler-sched_setaffinity-fsmount-openat-openat-write
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
sched_setaffinity(0x0, 0x0, 0x0)
fsmount(0xffffffffffffffff, 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r0, &(0x7f0000004200)='t', 0x1)

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}}): prlimit64-sched_setscheduler-sched_setaffinity-fsmount-openat-openat-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
sched_setaffinity(0x0, 0x0, 0x0)
fsmount(0xffffffffffffffff, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
sendfile(r1, r0, 0x0, 0x7fffffff)

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}}): prlimit64-sched_setscheduler-sched_setaffinity-fsmount-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
sched_setaffinity(0x0, 0x0, 0x0)
fsmount(0xffffffffffffffff, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
write(0xffffffffffffffff, &(0x7f0000004200)='t', 0x1)
sendfile(0xffffffffffffffff, r0, 0x0, 0x7fffffff)

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}}): prlimit64-sched_setscheduler-sched_setaffinity-fsmount-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
sched_setaffinity(0x0, 0x0, 0x0)
fsmount(0xffffffffffffffff, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r0, &(0x7f0000004200)='t', 0x1)
sendfile(r0, 0xffffffffffffffff, 0x0, 0x7fffffff)

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}}): prlimit64-sched_setscheduler-sched_setaffinity-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
sched_setaffinity(0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

program crashed: INFO: rcu detected stall in corrupted
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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

program crashed: INFO: rcu detected stall in corrupted
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}}): prlimit64-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

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}}): sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, 0x0, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, 0x0, 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, 0x0, 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, 0x0, 0x0)
sendfile(r1, r0, 0x0, 0x7fffffff)

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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200), 0x0)
sendfile(r1, r0, 0x0, 0x7fffffff)

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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

program crashed: INFO: rcu detected stall in corrupted
extracting C reproducer
testing compiled C 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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: INFO: rcu detected stall in corrupted
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false 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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
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:false Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
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:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false 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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: INFO: rcu detected stall in corrupted
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false 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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: INFO: rcu detected stall in corrupted
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false 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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: INFO: rcu detected stall in corrupted
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false 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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
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:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false 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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: INFO: rcu detected stall in corrupted
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false 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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: INFO: rcu detected stall in corrupted
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false 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}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
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:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
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:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: INFO: rcu detected stall in corrupted
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: INFO: rcu detected stall in corrupted
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
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:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

program did not crash
validation run: crashed=false
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000000)={0x2, 0x7}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000640)=0x2)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./bus\x00', 0x1c1040, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000e80)='./bus\x00', 0x1c1002, 0x40)
write(r1, &(0x7f0000004200)='t', 0x1)
sendfile(r1, r0, 0x0, 0x7fffffff)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
reproducing took 3h11m58.142514712s
repro crashed as (corrupted=true):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P823/6:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=24253, q=2239 ncpus=2)
task:kworker/0:2     state:D stack:20128 pid:823   tgid:823   ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: mld mld_ifc_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5402 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7204
 __schedule_loop kernel/sched/core.c:7283 [inline]
 schedule_rtlock+0x30/0x70 kernel/sched/core.c:7362
 rtlock_slowlock_locked+0x3638/0x3c80 kernel/locking/rtmutex.c:1891
 rtlock_slowlock kernel/locking/rtmutex.c:1918 [inline]
 rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
 __rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
 rt_spin_lock+0x165/0x400 kernel/locking/spinlock_rt.c:57
 spin_lock include/linux/spinlock_rt.h:45 [inline]
 get_from_partial_node+0x54/0x480 mm/slub.c:3812
 get_from_partial mm/slub.c:3940 [inline]
 ___slab_alloc+0xc2/0x930 mm/slub.c:4456
 __slab_alloc_node mm/slub.c:4524 [inline]
 slab_alloc_node mm/slub.c:4900 [inline]
 kmem_cache_alloc_noprof+0xea/0x680 mm/slub.c:4919
 kmem_alloc_batch lib/debugobjects.c:371 [inline]
 fill_pool+0x156/0x580 lib/debugobjects.c:420
 debug_objects_fill_pool+0xcf/0x110 lib/debugobjects.c:752
 debug_object_activate+0x6c/0x3a0 lib/debugobjects.c:841
 debug_rcu_head_queue kernel/rcu/rcu.h:236 [inline]
 __call_rcu_common kernel/rcu/tree.c:3116 [inline]
 call_rcu+0x43/0x890 kernel/rcu/tree.c:3251
 tcp_v4_do_rcv+0x126d/0x13f0 net/ipv4/tcp_ipv4.c:1848
 tcp_v4_rcv+0x264d/0x2fa0 net/ipv4/tcp_ipv4.c:2246
 ip_protocol_deliver_rcu+0x221/0x440 net/ipv4/ip_input.c:207
 ip_local_deliver_finish+0x3bb/0x6f0 net/ipv4/ip_input.c:241
 NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318
 NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318
 __netif_receive_skb_one_core net/core/dev.c:6204 [inline]
 __netif_receive_skb net/core/dev.c:6317 [inline]
 process_backlog+0x569/0xc60 net/core/dev.c:6668
 __napi_poll+0xab/0x550 net/core/dev.c:7727
 napi_poll net/core/dev.c:7790 [inline]
 net_rx_action+0x696/0xe00 net/core/dev.c:7947
 handle_softirqs+0x1de/0x6d0 kernel/softirq.c:626
 __do_softirq kernel/softirq.c:660 [inline]
 __local_bh_enable_ip+0x170/0x2b0 kernel/softirq.c:302
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:912 [inline]
 __dev_queue_xmit+0x1eaf/0x3900 net/core/dev.c:4907
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x340/0x550 net/ipv6/ip6_output.c:246
 dst_output include/net/dst.h:488 [inline]
 NF_HOOK+0x177/0x4f0 include/linux/netfilter.h:318
 mld_sendpack+0x8b4/0xe40 net/ipv6/mcast.c:1845
 mld_send_cr net/ipv6/mcast.c:2144 [inline]
 mld_ifc_work+0x835/0xe70 net/ipv6/mcast.c:2683
 process_one_work+0x98b/0x1630 kernel/workqueue.c:3318
 process_scheduled_works kernel/workqueue.c:3401 [inline]
 worker_thread+0xb49/0x1140 kernel/workqueue.c:3482
 kthread+0x388/0x470 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
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10417 jiffies! g24253 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x1000
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=8194
rcu: rcu_preempt kthread starved for 10418 jiffies! g24253 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x1000 ->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:D stack:27736 pid:18    tgid:18    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5402 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7204
 __schedule_loop kernel/sched/core.c:7283 [inline]
 schedule_rtlock+0x30/0x70 kernel/sched/core.c:7362
 rtlock_slowlock_locked+0x3638/0x3c80 kernel/locking/rtmutex.c:1891
 rtlock_slowlock kernel/locking/rtmutex.c:1918 [inline]
 rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
 __rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
 rt_spin_lock+0x165/0x400 kernel/locking/spinlock_rt.c:57
 spin_lock include/linux/spinlock_rt.h:45 [inline]
 get_from_partial_node+0x54/0x480 mm/slub.c:3812
 get_from_partial mm/slub.c:3940 [inline]
 ___slab_alloc+0xc2/0x930 mm/slub.c:4456
 __slab_alloc_node mm/slub.c:4524 [inline]
 slab_alloc_node mm/slub.c:4900 [inline]
 kmem_cache_alloc_noprof+0xea/0x680 mm/slub.c:4919
 kmem_alloc_batch lib/debugobjects.c:371 [inline]
 fill_pool+0x156/0x580 lib/debugobjects.c:420
 debug_objects_fill_pool+0xcf/0x110 lib/debugobjects.c:752
 debug_object_assert_init+0x65/0x300 lib/debugobjects.c:1030
 debug_timer_assert_init kernel/time/timer.c:803 [inline]
 debug_assert_init kernel/time/timer.c:848 [inline]
 __try_to_del_timer_sync kernel/time/timer.c:1457 [inline]
 __timer_delete_sync+0x247/0x610 kernel/time/timer.c:1621
 schedule_timeout+0x160/0x2c0 kernel/time/sleep_timeout.c:100
 rcu_gp_fqs_loop+0x312/0x11b0 kernel/rcu/tree.c:2095
 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
 kthread+0x388/0x470 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
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6577 Comm: syz.4.27 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:hlock_class kernel/locking/lockdep.c:234 [inline]
RIP: 0010:__lock_acquire+0x8a1/0x2d10 kernel/locking/lockdep.c:5235
Code: d1 0d 0e 00 4d 89 e5 0f 85 1f 02 00 00 48 83 7c 24 28 00 0f 84 b3 01 00 00 41 8b 45 f8 25 ff 1f 00 00 48 0f a3 05 cf d6 00 12 <0f> 83 5f 01 00 00 48 69 c0 c8 00 00 00 48 8d 80 d0 e4 42 93 e9 7e
RSP: 0018:ffffc90004aef150 EFLAGS: 00000007
RAX: 0000000000000828 RBX: 0000000037c17e74 RCX: 00000000062ee2a5
RDX: 000000009fa9a3a7 RSI: 0000000005b8947f RDI: ffff88802bf98000
RBP: e6b87a6000000000 R08: ffffffff81771406 R09: ffffffff8e1cac60
R10: ffffc90004aef458 R11: ffffffff81b07a50 R12: ffff88802bf98c28
R13: ffff88802bf98c28 R14: ffff88802bf98000 R15: 0000000000000001
FS:  00005555555c1500(0000) GS:ffff888125d7e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0bf4038eb8 CR3: 000000006458c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5870
 rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 rcu_read_lock include/linux/rcupdate.h:838 [inline]
 class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
 unwind_next_frame+0xc3/0x2550 arch/x86/kernel/unwind_orc.c:495
 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __do_kmalloc_node mm/slub.c:5309 [inline]
 __kmalloc_noprof+0x3e7/0x7b0 mm/slub.c:5322
 _kmalloc_noprof include/linux/slab.h:971 [inline]
 _kzalloc_noprof include/linux/slab.h:1284 [inline]
 iter_file_splice_write+0x1dd/0x10f0 fs/splice.c:678
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x104/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x545/0xc80 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x19b/0x2a0 fs/splice.c:1228
 do_sendfile+0x547/0x7e0 fs/read_write.c:1372
 __do_sys_sendfile64 fs/read_write.c:1433 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1419
 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: 0033:0x7f006691ce59
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:00007ffee3e43b18 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f0066b95fa0 RCX: 00007f006691ce59
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 00007f00669b2d6f R08: 0000000000000000 R09: 0000000000000000
R10: 000000007fffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0066b95fac R14: 00007f0066b95fa0 R15: 00007f0066b95fa0
 </TASK>

report is corrupted, running repro again
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: INFO: rcu detected stall in corrupted
report is corrupted, running repro again
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: INFO: rcu detected stall in corrupted
report is corrupted, running repro again
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-openat-openat-write-sendfile
program crashed: INFO: rcu detected stall in corrupted
final repro crashed as (corrupted=true):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P12/3:b..l P10/3:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=12965, q=5050 ncpus=2)
task:kworker/0:1     state:R  running task     stack:22872 pid:10    tgid:10    ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: mld mld_ifc_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5402 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7204
 __schedule_loop kernel/sched/core.c:7283 [inline]
 schedule_rtlock+0x30/0x70 kernel/sched/core.c:7362
 rtlock_slowlock_locked+0x3638/0x3c80 kernel/locking/rtmutex.c:1891
 rtlock_slowlock kernel/locking/rtmutex.c:1918 [inline]
 rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
 __rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
 rt_spin_lock+0x165/0x400 kernel/locking/spinlock_rt.c:57
 spin_lock include/linux/spinlock_rt.h:45 [inline]
 tasklet_lock_callback kernel/softirq.c:881 [inline]
 tasklet_action_common+0xc5/0x610 kernel/softirq.c:931
 handle_softirqs+0x1de/0x6d0 kernel/softirq.c:626
 __do_softirq kernel/softirq.c:660 [inline]
 __local_bh_enable_ip+0x170/0x2b0 kernel/softirq.c:302
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:912 [inline]
 __dev_queue_xmit+0x1eaf/0x3900 net/core/dev.c:4907
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x340/0x550 net/ipv6/ip6_output.c:246
 dst_output include/net/dst.h:488 [inline]
 NF_HOOK+0x177/0x4f0 include/linux/netfilter.h:318
 mld_sendpack+0x8b4/0xe40 net/ipv6/mcast.c:1845
 mld_send_cr net/ipv6/mcast.c:2144 [inline]
 mld_ifc_work+0x835/0xe70 net/ipv6/mcast.c:2683
 process_one_work+0x98b/0x1630 kernel/workqueue.c:3318
 process_scheduled_works kernel/workqueue.c:3401 [inline]
 worker_thread+0xb49/0x1140 kernel/workqueue.c:3482
 kthread+0x388/0x470 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
 </TASK>
task:kworker/u8:0    state:D stack:23336 pid:12    tgid:12    ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5402 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7204
 __schedule_loop kernel/sched/core.c:7283 [inline]
 schedule_rtlock+0x30/0x70 kernel/sched/core.c:7362
 rtlock_slowlock_locked+0x3638/0x3c80 kernel/locking/rtmutex.c:1891
 rtlock_slowlock kernel/locking/rtmutex.c:1918 [inline]
 rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
 __rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
 rt_spin_lock+0x165/0x400 kernel/locking/spinlock_rt.c:57
 spin_lock include/linux/spinlock_rt.h:45 [inline]
 tasklet_lock_callback kernel/softirq.c:881 [inline]
 tasklet_action_common+0xc5/0x610 kernel/softirq.c:931
 handle_softirqs+0x1de/0x6d0 kernel/softirq.c:626
 __do_softirq kernel/softirq.c:660 [inline]
 __local_bh_enable_ip+0x170/0x2b0 kernel/softirq.c:302
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:912 [inline]
 __dev_queue_xmit+0x1eaf/0x3900 net/core/dev.c:4907
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x340/0x550 net/ipv6/ip6_output.c:246
 dst_output include/net/dst.h:488 [inline]
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ndisc_send_skb+0xd0b/0x1670 net/ipv6/ndisc.c:512
 ndisc_send_ns+0xd7/0x160 net/ipv6/ndisc.c:671
 addrconf_dad_work+0xbea/0x1680 net/ipv6/addrconf.c:4309
 process_one_work+0x98b/0x1630 kernel/workqueue.c:3318
 process_scheduled_works kernel/workqueue.c:3401 [inline]
 worker_thread+0xb49/0x1140 kernel/workqueue.c:3482
 kthread+0x388/0x470 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
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10408 jiffies! g12965 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=3361
rcu: rcu_preempt kthread starved for 10409 jiffies! g12965 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:26720 pid:18    tgid:18    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5402 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7204
 __schedule_loop kernel/sched/core.c:7283 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7298
 schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x312/0x11b0 kernel/rcu/tree.c:2095
 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
 kthread+0x388/0x470 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
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 5672 Comm: syz-executor235 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:81 [inline]
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:103 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:238 [inline]
RIP: 0010:unwind_next_frame+0x50e/0x2550 arch/x86/kernel/unwind_orc.c:510
Code: c1 e8 3f 48 01 c8 48 83 e0 fe 4c 8d 3c 45 00 00 00 00 49 01 ef 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 e0 48 0f 46 e9 49
RSP: 0018:ffffc900047bf2d8 EFLAGS: 00000a03
RAX: 0000000000000000 RBX: ffffffff8fc6a03c RCX: dffffc0000000000
RDX: ffffffff8fc6a01c RSI: ffffffff903df67c RDI: ffffffff8bac2120
RBP: ffffffff8fc6a03c R08: 0000000000000009 R09: ffffffff8e1cac60
R10: ffffc900047bf408 R11: fffff520008f7e8d R12: ffffffff81773e86
R13: ffffffff8fc6a038 R14: ffffc900047bf408 R15: ffffffff8fc6a03c
FS:  0000555567847400(0000) GS:ffff888125d7e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000004200 CR3: 000000004f1bc000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __unwind_start+0x5b8/0x760 arch/x86/kernel/unwind_orc.c:787
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0xe3/0x150 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2700 [inline]
 slab_free mm/slub.c:6284 [inline]
 kfree+0x1c5/0x6c0 mm/slub.c:6599
 iter_file_splice_write+0xf86/0x10f0 fs/splice.c:768
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x104/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x545/0xc80 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x19b/0x2a0 fs/splice.c:1228
 do_sendfile+0x547/0x7e0 fs/read_write.c:1372
 __do_sys_sendfile64 fs/read_write.c:1433 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1419
 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: 0033:0x7f91b1f3f719
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 d0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffef1a8f4c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f91b1f3f719
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000555567848780 R09: 0000555567848780
R10: 000000007fffffff R11: 0000000000000246 R12: 00007f91b1fb305e
R13: 00007ffef1a8f500 R14: 00007ffef1a8f540 R15: 0000000000000000
 </TASK>