Extracting prog: 1m14.351262603s
Minimizing prog: 11m38.32211649s
Simplifying prog options: 0s
Extracting C: 39.666310711s
Simplifying C: 4m39.671259555s


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: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-openat-write-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(&(0x7f0000000080)=@filename='nodev\x00', &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000180)='100\x00', 0x4)
write(0xffffffffffffffff, &(0x7f00000001c0)='200\x00', 0x4)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program crashed: WARNING in tracing_start_tr
single: successfully extracted reproducer
found reproducer with 7 syscalls
minimizing guilty program
testing program (duration=35.133689571s, {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-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(&(0x7f0000000080)=@filename='nodev\x00', &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000180)='100\x00', 0x4)
write(0xffffffffffffffff, &(0x7f00000001c0)='200\x00', 0x4)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)

program did not crash
testing program (duration=35.133689571s, {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-openat-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(&(0x7f0000000080)=@filename='nodev\x00', &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000180)='100\x00', 0x4)
write(0xffffffffffffffff, &(0x7f00000001c0)='200\x00', 0x4)
openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program did not crash
testing program (duration=35.133689571s, {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-write-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(&(0x7f0000000080)=@filename='nodev\x00', &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000180)='100\x00', 0x4)
write(0xffffffffffffffff, &(0x7f00000001c0)='200\x00', 0x4)
write(0xffffffffffffffff, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program did not crash
testing program (duration=35.133689571s, {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-openat-write-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(&(0x7f0000000080)=@filename='nodev\x00', &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000180)='100\x00', 0x4)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program crashed: WARNING in tracing_start_tr
testing program (duration=35.133689571s, {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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(&(0x7f0000000080)=@filename='nodev\x00', &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program crashed: WARNING in tracing_start_tr
testing program (duration=35.133689571s, {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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program did not crash
testing program (duration=35.133689571s, {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-openat
detailed listing:
executing program 0:
mount(&(0x7f0000000080)=@filename='nodev\x00', &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program did not crash
testing program (duration=35.133689571s, {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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(&(0x7f0000000080)=@filename='nodev\x00', &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program did not crash
testing program (duration=35.133689571s, {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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program crashed: WARNING in tracing_start_tr
testing program (duration=35.133689571s, {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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program did not crash
testing program (duration=35.133689571s, {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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./tracefs_dir\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program did not crash
testing program (duration=35.133689571s, {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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program did not crash
testing program (duration=35.133689571s, {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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program did not crash
testing program (duration=35.133689571s, {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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280), 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program did not crash
testing program (duration=35.133689571s, {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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=35.133689571s, {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-openat
program crashed: WARNING in tracing_start_tr
simplifying C reproducer
testing compiled C program (duration=35.133689571s, {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-openat
program did not crash
testing compiled C program (duration=35.133689571s, {Threaded:true 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-openat
program did not crash
testing compiled C program (duration=35.133689571s, {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: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-openat
program did not crash
testing compiled C program (duration=35.133689571s, {Threaded:true 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: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-openat
program crashed: WARNING in tracing_start_tr
testing compiled C program (duration=35.133689571s, {Threaded:true 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: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-openat
program crashed: WARNING in tracing_start_tr
testing compiled C program (duration=35.133689571s, {Threaded:true 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: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-openat
program crashed: WARNING in tracing_start_tr
testing compiled C program (duration=35.133689571s, {Threaded:true 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: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-openat
program crashed: WARNING in tracing_start_tr
testing program (duration=35.133689571s, {Threaded:true 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: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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program crashed: WARNING in tracing_start_tr
validation run: crashed=true
testing program (duration=35.133689571s, {Threaded:true 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: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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program crashed: WARNING in tracing_start_tr
validation run: crashed=true
testing program (duration=35.133689571s, {Threaded:true 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: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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program did not crash
validation run: crashed=false
testing program (duration=35.133689571s, {Threaded:true 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: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-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./tracefs_dir\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./tracefs_dir\x00', &(0x7f0000000100)='tracefs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./tracefs_dir/buffer_subbuf_size_kb\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='8\x00', 0x2)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./tracefs_dir/trace\x00', 0x0, 0x0)

program crashed: WARNING in tracing_start_tr
validation run: crashed=true
reproducing took 21m40.920223687s
repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 9473 at kernel/trace/trace.c:2439 tracing_start_tr+0x22a/0x2f0 kernel/trace/trace.c:2439
Modules linked in:
CPU: 1 UID: 0 PID: 9473 Comm: syz.5.4544 Not tainted syzkaller #0 89da86cd63dd77ed75a7a6b832383be384370f21
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:tracing_start_tr+0x22a/0x2f0 kernel/trace/trace.c:2439
Code: 04 25 28 00 00 00 48 3b 44 24 60 0f 85 84 00 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 fc 43 1b 04 cc e8 d6 26 fc ff <0f> 0b 49 bd 00 00 00 00 00 fc ff df 43 0f b6 04 2c 84 c0 75 79 41
RSP: 0018:ffffc9000133fc60 EFLAGS: 00010093
RAX: ffffffff818b4aea RBX: 1ffff92000267f90 RCX: ffff88811cbe3900
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: ffffc9000133fd20 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000267f66 R12: 1ffffffff0ec1af4
R13: 00000000ffffffff R14: ffffffff8760d7a0 R15: ffffffff8760d720
FS:  000055556022c500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f363fff CR3: 000000011bc96000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 tracing_release+0x300/0x4f0 kernel/trace/trace.c:4801
 __fput+0x208/0xa30 fs/file_table.c:447
 ____fput+0x20/0x30 fs/file_table.c:475
 task_work_run+0x1e8/0x260 kernel/task_work.c:246
 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218
 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f371079e019
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:00007ffcdcef9078 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffcdcef9160 RCX: 00007f371079e019
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 000000000000beb8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b32520000 R11: 0000000000000246 R12: 00007ffcdcef91a0
R13: 00007f3710a25fac R14: 000000000000beec R15: 00007f3710a25fa0
 </TASK>
---[ end trace 0000000000000000 ]---

final repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 9473 at kernel/trace/trace.c:2439 tracing_start_tr+0x22a/0x2f0 kernel/trace/trace.c:2439
Modules linked in:
CPU: 1 UID: 0 PID: 9473 Comm: syz.5.4544 Not tainted syzkaller #0 89da86cd63dd77ed75a7a6b832383be384370f21
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:tracing_start_tr+0x22a/0x2f0 kernel/trace/trace.c:2439
Code: 04 25 28 00 00 00 48 3b 44 24 60 0f 85 84 00 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 fc 43 1b 04 cc e8 d6 26 fc ff <0f> 0b 49 bd 00 00 00 00 00 fc ff df 43 0f b6 04 2c 84 c0 75 79 41
RSP: 0018:ffffc9000133fc60 EFLAGS: 00010093
RAX: ffffffff818b4aea RBX: 1ffff92000267f90 RCX: ffff88811cbe3900
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: ffffc9000133fd20 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000267f66 R12: 1ffffffff0ec1af4
R13: 00000000ffffffff R14: ffffffff8760d7a0 R15: ffffffff8760d720
FS:  000055556022c500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f363fff CR3: 000000011bc96000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 tracing_release+0x300/0x4f0 kernel/trace/trace.c:4801
 __fput+0x208/0xa30 fs/file_table.c:447
 ____fput+0x20/0x30 fs/file_table.c:475
 task_work_run+0x1e8/0x260 kernel/task_work.c:246
 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218
 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f371079e019
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:00007ffcdcef9078 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffcdcef9160 RCX: 00007f371079e019
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 000000000000beb8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b32520000 R11: 0000000000000246 R12: 00007ffcdcef91a0
R13: 00007f3710a25fac R14: 000000000000beec R15: 00007f3710a25fa0
 </TASK>
---[ end trace 0000000000000000 ]---