Extracting prog: 5m15.765478784s Minimizing prog: 1h2m44.708452074s Simplifying prog options: 13m52.935551505s Extracting C: 5m13.562678453s Simplifying C: 0s 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-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) 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-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) program crashed: INFO: rcu detected stall in corrupted single: successfully extracted reproducer found reproducer with 5 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-prctl$PR_SCHED_CORE-syz_open_dev$evdev detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) 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-prctl$PR_SCHED_CORE-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) 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-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) 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-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) 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-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) 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-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, 0x0, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) 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-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, 0x0) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) 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-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(0x0, 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) 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-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, 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}}): prlimit64-sched_setscheduler-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={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}}): prlimit64-sched_setscheduler-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER program crashed: no output from test machine a never seen crash title: no output from test machine, ignore simplifying guilty program options testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) program crashed: INFO: rcu detected stall in corrupted extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-sched_setscheduler-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER program crashed: no output from test machine a never seen crash title: no output from test machine, ignore 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}}): prlimit64-sched_setscheduler-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) program crashed: INFO: rcu detected stall in corrupted validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: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-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) program crashed: INFO: rcu detected stall in corrupted validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: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-prctl$PR_SCHED_CORE-syz_open_dev$evdev-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER detailed listing: executing program 0: prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7) prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0) syz_open_dev$evdev(&(0x7f00000000c0), 0x0, 0x822b01) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0xc, &(0x7f0000000240)={0x1, &(0x7f0000000200)=[{0x6, 0xff, 0x7, 0x7fc00002}]}) program crashed: WARNING in rcu_check_gp_start_stall validation run: crashed=true reproducing took 1h35m44.739651533s repro crashed as (corrupted=false): ------------[ cut here ]------------ WARNING: kernel/rcu/tree_stall.h:1049 at rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1049, CPU#1: syz.0.33/6105 Modules linked in: CPU: 1 UID: 0 PID: 6105 Comm: syz.0.33 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1049 Code: ff ff 48 c7 c7 a0 25 d3 99 be 04 00 00 00 e8 93 db 7f 00 4c 89 f7 b8 01 00 00 00 87 05 55 b1 2a 18 85 c0 0f 85 17 ff ff ff 90 <0f> 0b 90 48 81 ff 00 6f 34 8e 74 47 48 c7 c0 a0 fe c3 8f 48 c1 e8 RSP: 0018:ffffc90000a08b78 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000a06 RCX: ffffffff81a8743d RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8e346f00 RBP: ffffc90000a08e30 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff33a64b4 R12: 0000000000002904 R13: 1ffff110170e7722 R14: ffffffff8e346f00 R15: dffffc0000000000 FS: 00007f022b1126c0(0000) GS:ffff888125ae6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f022a172a60 CR3: 00000000756be000 CR4: 00000000003526f0 Call Trace: rcu_core+0x6a9/0x1870 kernel/rcu/tree.c:2852 handle_softirqs+0x27d/0x850 kernel/softirq.c:626 __do_softirq kernel/softirq.c:660 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:727 irq_exit_rcu+0x9/0x30 kernel/softirq.c:743 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:syscall_enter_from_user_mode_work include/linux/entry-common.h:77 [inline] RIP: 0010:syscall_enter_from_user_mode include/linux/entry-common.h:109 [inline] RIP: 0010:do_syscall_64+0xc3/0xf80 arch/x86/entry/syscall_64.c:90 Code: 00 48 8b 7d 08 48 89 7b 18 e8 69 82 00 00 0f 1f 44 00 00 0f 1f 44 00 00 90 e8 b9 d7 64 f6 90 90 e8 62 d7 64 f6 fb 49 8b 57 08 c2 3f 74 0e 4c 89 f7 4c 89 ee e8 fd db 46 f6 49 89 c4 90 90 41 RSP: 0018:ffffc900033a7ee0 EFLAGS: 00000282 RAX: 8d9bf3358ad18b00 RBX: ffffc900033a7ee0 RCX: 8d9bf3358ad18b00 RDX: 0000000000000001 RSI: ffffffff8daa56ad RDI: ffffffff8be252e0 RBP: ffffc900033a7f38 R08: ffffffff8fc3ce77 R09: 1ffffffff1f879ce R10: dffffc0000000000 R11: fffffbfff1f879cf R12: 00000000000000ca R13: 00000000000000ca R14: ffffc900033a7f48 R15: ffff888025eadb80 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f022a18f749 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f022b1120e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f022a3e5fa8 RCX: 00007f022a18f749 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f022a3e5fa8 RBP: 00007f022a3e5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f022a3e6038 R14: 00007ffdfd813600 R15: 00007ffdfd8136e8 ---------------- Code disassembly (best guess): 0: 00 48 8b add %cl,-0x75(%rax) 3: 7d 08 jge 0xd 5: 48 89 7b 18 mov %rdi,0x18(%rbx) 9: e8 69 82 00 00 call 0x8277 e: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 13: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 18: 90 nop 19: e8 b9 d7 64 f6 call 0xf664d7d7 1e: 90 nop 1f: 90 nop 20: e8 62 d7 64 f6 call 0xf664d787 25: fb sti 26: 49 8b 57 08 mov 0x8(%r15),%rdx * 2a: f6 c2 3f test $0x3f,%dl <-- trapping instruction 2d: 74 0e je 0x3d 2f: 4c 89 f7 mov %r14,%rdi 32: 4c 89 ee mov %r13,%rsi 35: e8 fd db 46 f6 call 0xf646dc37 3a: 49 89 c4 mov %rax,%r12 3d: 90 nop 3e: 90 nop 3f: 41 rex.B final repro crashed as (corrupted=false): ------------[ cut here ]------------ WARNING: kernel/rcu/tree_stall.h:1049 at rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1049, CPU#1: syz.0.33/6105 Modules linked in: CPU: 1 UID: 0 PID: 6105 Comm: syz.0.33 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:rcu_check_gp_start_stall+0x2e4/0x470 kernel/rcu/tree_stall.h:1049 Code: ff ff 48 c7 c7 a0 25 d3 99 be 04 00 00 00 e8 93 db 7f 00 4c 89 f7 b8 01 00 00 00 87 05 55 b1 2a 18 85 c0 0f 85 17 ff ff ff 90 <0f> 0b 90 48 81 ff 00 6f 34 8e 74 47 48 c7 c0 a0 fe c3 8f 48 c1 e8 RSP: 0018:ffffc90000a08b78 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000a06 RCX: ffffffff81a8743d RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8e346f00 RBP: ffffc90000a08e30 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff33a64b4 R12: 0000000000002904 R13: 1ffff110170e7722 R14: ffffffff8e346f00 R15: dffffc0000000000 FS: 00007f022b1126c0(0000) GS:ffff888125ae6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f022a172a60 CR3: 00000000756be000 CR4: 00000000003526f0 Call Trace: rcu_core+0x6a9/0x1870 kernel/rcu/tree.c:2852 handle_softirqs+0x27d/0x850 kernel/softirq.c:626 __do_softirq kernel/softirq.c:660 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:727 irq_exit_rcu+0x9/0x30 kernel/softirq.c:743 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:syscall_enter_from_user_mode_work include/linux/entry-common.h:77 [inline] RIP: 0010:syscall_enter_from_user_mode include/linux/entry-common.h:109 [inline] RIP: 0010:do_syscall_64+0xc3/0xf80 arch/x86/entry/syscall_64.c:90 Code: 00 48 8b 7d 08 48 89 7b 18 e8 69 82 00 00 0f 1f 44 00 00 0f 1f 44 00 00 90 e8 b9 d7 64 f6 90 90 e8 62 d7 64 f6 fb 49 8b 57 08 c2 3f 74 0e 4c 89 f7 4c 89 ee e8 fd db 46 f6 49 89 c4 90 90 41 RSP: 0018:ffffc900033a7ee0 EFLAGS: 00000282 RAX: 8d9bf3358ad18b00 RBX: ffffc900033a7ee0 RCX: 8d9bf3358ad18b00 RDX: 0000000000000001 RSI: ffffffff8daa56ad RDI: ffffffff8be252e0 RBP: ffffc900033a7f38 R08: ffffffff8fc3ce77 R09: 1ffffffff1f879ce R10: dffffc0000000000 R11: fffffbfff1f879cf R12: 00000000000000ca R13: 00000000000000ca R14: ffffc900033a7f48 R15: ffff888025eadb80 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f022a18f749 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f022b1120e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f022a3e5fa8 RCX: 00007f022a18f749 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f022a3e5fa8 RBP: 00007f022a3e5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f022a3e6038 R14: 00007ffdfd813600 R15: 00007ffdfd8136e8 ---------------- Code disassembly (best guess): 0: 00 48 8b add %cl,-0x75(%rax) 3: 7d 08 jge 0xd 5: 48 89 7b 18 mov %rdi,0x18(%rbx) 9: e8 69 82 00 00 call 0x8277 e: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 13: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 18: 90 nop 19: e8 b9 d7 64 f6 call 0xf664d7d7 1e: 90 nop 1f: 90 nop 20: e8 62 d7 64 f6 call 0xf664d787 25: fb sti 26: 49 8b 57 08 mov 0x8(%r15),%rdx * 2a: f6 c2 3f test $0x3f,%dl <-- trapping instruction 2d: 74 0e je 0x3d 2f: 4c 89 f7 mov %r14,%rdi 32: 4c 89 ee mov %r13,%rsi 35: e8 fd db 46 f6 call 0xf646dc37 3a: 49 89 c4 mov %rax,%r12 3d: 90 nop 3e: 90 nop 3f: 41 rex.B