Extracting prog: 56.406525718s
Minimizing prog: 13m16.360367313s
Simplifying prog options: 0s
Extracting C: 31.284798491s
Simplifying C: 6m2.779881386s


extracting reproducer from 26 programs
first checking the prog from the crash report
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program crashed: invalid opcode in __traceiter_sched_switch
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000400)='1\n', 0x2)
write(0xffffffffffffffff, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount-openat-write-write
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500)='0\n', 0x2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, 0x0, 0x0)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400), 0x0)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, 0x0, 0x0) (fail_nth: 2)

program did not crash
testing program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500), 0x0) (fail_nth: 2)

program did not crash
extracting C reproducer
testing compiled C program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
program crashed: invalid opcode in __traceiter_sched_switch
simplifying C reproducer
testing compiled C program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
program crashed: invalid opcode in __traceiter_sched_switch
testing compiled C program (duration=35.471881356s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
program did not crash
testing compiled C program (duration=35.471881356s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
program crashed: invalid opcode in __traceiter_sched_switch
testing compiled C program (duration=35.471881356s, {Threaded:false 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}}): mkdirat-mount-openat-write-write
program crashed: invalid opcode in __traceiter_sched_switch
testing compiled C program (duration=35.471881356s, {Threaded:false 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}}): mkdirat-mount-openat-write-write
program crashed: invalid opcode in __traceiter_sched_switch
testing compiled C program (duration=35.471881356s, {Threaded:false 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}}): mkdirat-mount-openat-write-write
program crashed: invalid opcode in __traceiter_sched_switch
testing compiled C program (duration=35.471881356s, {Threaded:false 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}}): mkdirat-mount-openat-write-write
program crashed: invalid opcode in __traceiter_sched_switch
testing program (duration=35.471881356s, {Threaded:false 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}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program crashed: invalid opcode in __traceiter_sched_switch
validation run: crashed=true
testing program (duration=35.471881356s, {Threaded:false 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}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program crashed: invalid opcode in __traceiter_sched_switch
validation run: crashed=true
testing program (duration=35.471881356s, {Threaded:false 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}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000200)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./debug/tracing/events/sched/sched_switch/enable\x00', 0x1, 0x0)
write(r0, &(0x7f0000000400)='1\n', 0x2)
write(r0, &(0x7f0000000500)='0\n', 0x2) (fail_nth: 2)

program crashed: invalid opcode in __traceiter_sched_switch
validation run: crashed=true
reproducing took 23m4.722101072s
repro crashed as (corrupted=false):
CFI failure at __traceiter_sched_switch+0xa2/0xe0 include/trace/events/sched.h:222 (target: tp_stub_func+0x0/0x20; expected type: 0x548bb05a)
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 33 Comm: rcuop/1 Not tainted syzkaller #0 7f3b23dcf55806c758f3cdeb9210fc77c27c120f
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__traceiter_sched_switch+0xa2/0xe0 include/trace/events/sched.h:222
Code: 00 74 05 e8 20 01 86 00 49 8b 7d 08 44 89 e6 48 8b 55 c8 48 8b 4d c0 44 8b 45 d4 49 89 db 41 ba a6 4f 74 ab 45 03 53 f1 74 02 <0f> 0b 41 ff d3 0f 1f 00 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c
RSP: 0018:ffffc90000227a70 EFLAGS: 00010007
RAX: 1ffff11021e4e5d3 RBX: ffffffff8188bff0 RCX: ffff888103669300
RDX: ffff888103678000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000227ab0 R08: 0000000000000001 R09: 1ffffffff0fd97dd
R10: 000000000f07a177 R11: ffffffff8188bff0 R12: 0000000000000000
R13: ffff88810f272e90 R14: ffff88810f272e90 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34763fff CR3: 000000010cbca000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 trace_sched_switch include/trace/events/sched.h:222 [inline]
 __schedule+0x1cb1/0x20b0 kernel/sched/core.c:7867
 __schedule_loop kernel/sched/core.c:7957 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7972
 nocb_cb_wait kernel/rcu/tree_nocb.h:891 [inline]
 rcu_nocb_cb_kthread+0x271/0xb60 kernel/rcu/tree_nocb.h:957
 kthread+0x2c7/0x360 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__traceiter_sched_switch+0xa2/0xe0 include/trace/events/sched.h:222
Code: 00 74 05 e8 20 01 86 00 49 8b 7d 08 44 89 e6 48 8b 55 c8 48 8b 4d c0 44 8b 45 d4 49 89 db 41 ba a6 4f 74 ab 45 03 53 f1 74 02 <0f> 0b 41 ff d3 0f 1f 00 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c
RSP: 0018:ffffc90000227a70 EFLAGS: 00010007
RAX: 1ffff11021e4e5d3 RBX: ffffffff8188bff0 RCX: ffff888103669300
RDX: ffff888103678000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000227ab0 R08: 0000000000000001 R09: 1ffffffff0fd97dd
R10: 000000000f07a177 R11: ffffffff8188bff0 R12: 0000000000000000
R13: ffff88810f272e90 R14: ffff88810f272e90 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34763fff CR3: 000000010cbca000 CR4: 00000000003526b0

final repro crashed as (corrupted=false):
CFI failure at __traceiter_sched_switch+0xa2/0xe0 include/trace/events/sched.h:222 (target: tp_stub_func+0x0/0x20; expected type: 0x548bb05a)
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 33 Comm: rcuop/1 Not tainted syzkaller #0 7f3b23dcf55806c758f3cdeb9210fc77c27c120f
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__traceiter_sched_switch+0xa2/0xe0 include/trace/events/sched.h:222
Code: 00 74 05 e8 20 01 86 00 49 8b 7d 08 44 89 e6 48 8b 55 c8 48 8b 4d c0 44 8b 45 d4 49 89 db 41 ba a6 4f 74 ab 45 03 53 f1 74 02 <0f> 0b 41 ff d3 0f 1f 00 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c
RSP: 0018:ffffc90000227a70 EFLAGS: 00010007
RAX: 1ffff11021e4e5d3 RBX: ffffffff8188bff0 RCX: ffff888103669300
RDX: ffff888103678000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000227ab0 R08: 0000000000000001 R09: 1ffffffff0fd97dd
R10: 000000000f07a177 R11: ffffffff8188bff0 R12: 0000000000000000
R13: ffff88810f272e90 R14: ffff88810f272e90 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34763fff CR3: 000000010cbca000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 trace_sched_switch include/trace/events/sched.h:222 [inline]
 __schedule+0x1cb1/0x20b0 kernel/sched/core.c:7867
 __schedule_loop kernel/sched/core.c:7957 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7972
 nocb_cb_wait kernel/rcu/tree_nocb.h:891 [inline]
 rcu_nocb_cb_kthread+0x271/0xb60 kernel/rcu/tree_nocb.h:957
 kthread+0x2c7/0x360 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__traceiter_sched_switch+0xa2/0xe0 include/trace/events/sched.h:222
Code: 00 74 05 e8 20 01 86 00 49 8b 7d 08 44 89 e6 48 8b 55 c8 48 8b 4d c0 44 8b 45 d4 49 89 db 41 ba a6 4f 74 ab 45 03 53 f1 74 02 <0f> 0b 41 ff d3 0f 1f 00 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c
RSP: 0018:ffffc90000227a70 EFLAGS: 00010007
RAX: 1ffff11021e4e5d3 RBX: ffffffff8188bff0 RCX: ffff888103669300
RDX: ffff888103678000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000227ab0 R08: 0000000000000001 R09: 1ffffffff0fd97dd
R10: 000000000f07a177 R11: ffffffff8188bff0 R12: 0000000000000000
R13: ffff88810f272e90 R14: ffff88810f272e90 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34763fff CR3: 000000010cbca000 CR4: 00000000003526b0