Extracting prog: 1m14.373007242s
Minimizing prog: 17m16.486393309s
Simplifying prog options: 2m32.472325992s
Extracting C: 26.702331358s
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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program crashed: WARNING in trace_rb_cpu_prepare
single: successfully extracted reproducer
found reproducer with 9 syscalls
minimizing guilty program
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
writev(0xffffffffffffffff, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, 0x0, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(0x0, 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{0x0}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, 0x0, 0x200)

program did not crash
extracting C reproducer
testing compiled C program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
program did not crash
simplifying guilty program options
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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: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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program crashed: WARNING in trace_rb_cpu_prepare
validation run: crashed=true
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program crashed: WARNING in trace_rb_cpu_prepare
validation run: crashed=true
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
validation run: crashed=false
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program did not crash
validation run: crashed=false
testing program (duration=43.74886611s, {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}}): openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-mkdirat-mount-mkdirat-unlinkat
detailed listing:
executing program 0:
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./tracefs\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./tracefs\x00', &(0x7f0000000040)='tracefs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x1ff)
unlinkat(0xffffffffffffff9c, &(0x7f0000000140)='./tracefs/instances/foo\x00', 0x200)

program crashed: WARNING in trace_rb_cpu_prepare
validation run: crashed=true
reproducing took 25m12.167685623s
repro crashed as (corrupted=false):
------------[ cut here ]------------
failed to allocate ring buffer on CPU 1
WARNING: kernel/trace/ring_buffer.c:7979 at trace_rb_cpu_prepare+0x458/0x500 kernel/trace/ring_buffer.c:7979, CPU#2: syz.0.64/6212
Modules linked in:
CPU: 2 UID: 0 PID: 6212 Comm: syz.0.64 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:trace_rb_cpu_prepare+0x45a/0x500 kernel/trace/ring_buffer.c:7979
Code: 48 c1 ea 03 80 3c 02 00 0f 84 c7 fc ff ff 48 8b 3c 24 e8 69 19 6c 00 e9 b9 fc ff ff e8 8f 83 fb ff 48 8d 3d 68 2e 37 0f 89 ee <67> 48 0f b9 3a bb f4 ff ff ff e9 df fd ff ff 4c 89 ef e8 3f 19 6c
RSP: 0018:ffffc900041f78d0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880599bbcb8 RCX: 0000000000000000
RDX: ffff888031540000 RSI: 0000000000000001 RDI: ffffffff91464950
RBP: 0000000000000001 R08: ffff88803dd2a508 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffff8880599bbc10 R14: 0000000000000008 R15: 0000000000000162
FS:  00007fef5be4e6c0(0000) GS:ffff8880d5dd4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000f000 CR3: 0000000059d64000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 cpuhp_invoke_callback+0x205/0x9a0 kernel/cpu.c:204
 cpuhp_issue_call+0x1b8/0x970 kernel/cpu.c:2354
 __cpuhp_state_add_instance_cpuslocked+0x2d7/0x400 kernel/cpu.c:2423
 __cpuhp_state_add_instance+0xda/0x2e0 kernel/cpu.c:2444
 cpuhp_state_add_instance include/linux/cpuhotplug.h:383 [inline]
 alloc_buffer+0x777/0x1800 kernel/trace/ring_buffer.c:2833
 __ring_buffer_alloc+0x2d/0x40 kernel/trace/ring_buffer.c:2875
 allocate_trace_buffer+0x150/0xa30 kernel/trace/trace.c:8412
 allocate_trace_buffers kernel/trace/trace.c:8445 [inline]
 trace_array_create_systems+0x582/0xc30 kernel/trace/trace.c:8623
 trace_array_create kernel/trace/trace.c:8666 [inline]
 instance_mkdir+0xca/0x140 kernel/trace/trace.c:8681
 tracefs_syscall_mkdir+0x10e/0x180 fs/tracefs/inode.c:121
 vfs_mkdir+0x364/0x850 fs/namei.c:5410
 filename_mkdirat+0x48b/0x5e0 fs/namei.c:5443
 __do_sys_mkdirat fs/namei.c:5464 [inline]
 __se_sys_mkdirat fs/namei.c:5461 [inline]
 __x64_sys_mkdirat+0x89/0xc0 fs/namei.c:5461
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fef5af9e0d9
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:00007fef5be4e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fef5b226090 RCX: 00007fef5af9e0d9
RDX: 00000000000001ff RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007fef5b035024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5b226128 R14: 00007fef5b226090 R15: 00007ffd90a634e8
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   8:	0f 84 c7 fc ff ff    	je     0xfffffcd5
   e:	48 8b 3c 24          	mov    (%rsp),%rdi
  12:	e8 69 19 6c 00       	call   0x6c1980
  17:	e9 b9 fc ff ff       	jmp    0xfffffcd5
  1c:	e8 8f 83 fb ff       	call   0xfffb83b0
  21:	48 8d 3d 68 2e 37 0f 	lea    0xf372e68(%rip),%rdi        # 0xf372e90
  28:	89 ee                	mov    %ebp,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	bb f4 ff ff ff       	mov    $0xfffffff4,%ebx
  34:	e9 df fd ff ff       	jmp    0xfffffe18
  39:	4c 89 ef             	mov    %r13,%rdi
  3c:	e8                   	.byte 0xe8
  3d:	3f                   	(bad)
  3e:	19                   	.byte 0x19
  3f:	6c                   	insb   (%dx),%es:(%rdi)

final repro crashed as (corrupted=false):
------------[ cut here ]------------
failed to allocate ring buffer on CPU 1
WARNING: kernel/trace/ring_buffer.c:7979 at trace_rb_cpu_prepare+0x458/0x500 kernel/trace/ring_buffer.c:7979, CPU#2: syz.0.64/6212
Modules linked in:
CPU: 2 UID: 0 PID: 6212 Comm: syz.0.64 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:trace_rb_cpu_prepare+0x45a/0x500 kernel/trace/ring_buffer.c:7979
Code: 48 c1 ea 03 80 3c 02 00 0f 84 c7 fc ff ff 48 8b 3c 24 e8 69 19 6c 00 e9 b9 fc ff ff e8 8f 83 fb ff 48 8d 3d 68 2e 37 0f 89 ee <67> 48 0f b9 3a bb f4 ff ff ff e9 df fd ff ff 4c 89 ef e8 3f 19 6c
RSP: 0018:ffffc900041f78d0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880599bbcb8 RCX: 0000000000000000
RDX: ffff888031540000 RSI: 0000000000000001 RDI: ffffffff91464950
RBP: 0000000000000001 R08: ffff88803dd2a508 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffff8880599bbc10 R14: 0000000000000008 R15: 0000000000000162
FS:  00007fef5be4e6c0(0000) GS:ffff8880d5dd4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000f000 CR3: 0000000059d64000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 cpuhp_invoke_callback+0x205/0x9a0 kernel/cpu.c:204
 cpuhp_issue_call+0x1b8/0x970 kernel/cpu.c:2354
 __cpuhp_state_add_instance_cpuslocked+0x2d7/0x400 kernel/cpu.c:2423
 __cpuhp_state_add_instance+0xda/0x2e0 kernel/cpu.c:2444
 cpuhp_state_add_instance include/linux/cpuhotplug.h:383 [inline]
 alloc_buffer+0x777/0x1800 kernel/trace/ring_buffer.c:2833
 __ring_buffer_alloc+0x2d/0x40 kernel/trace/ring_buffer.c:2875
 allocate_trace_buffer+0x150/0xa30 kernel/trace/trace.c:8412
 allocate_trace_buffers kernel/trace/trace.c:8445 [inline]
 trace_array_create_systems+0x582/0xc30 kernel/trace/trace.c:8623
 trace_array_create kernel/trace/trace.c:8666 [inline]
 instance_mkdir+0xca/0x140 kernel/trace/trace.c:8681
 tracefs_syscall_mkdir+0x10e/0x180 fs/tracefs/inode.c:121
 vfs_mkdir+0x364/0x850 fs/namei.c:5410
 filename_mkdirat+0x48b/0x5e0 fs/namei.c:5443
 __do_sys_mkdirat fs/namei.c:5464 [inline]
 __se_sys_mkdirat fs/namei.c:5461 [inline]
 __x64_sys_mkdirat+0x89/0xc0 fs/namei.c:5461
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fef5af9e0d9
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:00007fef5be4e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fef5b226090 RCX: 00007fef5af9e0d9
RDX: 00000000000001ff RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007fef5b035024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5b226128 R14: 00007fef5b226090 R15: 00007ffd90a634e8
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   8:	0f 84 c7 fc ff ff    	je     0xfffffcd5
   e:	48 8b 3c 24          	mov    (%rsp),%rdi
  12:	e8 69 19 6c 00       	call   0x6c1980
  17:	e9 b9 fc ff ff       	jmp    0xfffffcd5
  1c:	e8 8f 83 fb ff       	call   0xfffb83b0
  21:	48 8d 3d 68 2e 37 0f 	lea    0xf372e68(%rip),%rdi        # 0xf372e90
  28:	89 ee                	mov    %ebp,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	bb f4 ff ff ff       	mov    $0xfffffff4,%ebx
  34:	e9 df fd ff ff       	jmp    0xfffffe18
  39:	4c 89 ef             	mov    %r13,%rdi
  3c:	e8                   	.byte 0xe8
  3d:	3f                   	(bad)
  3e:	19                   	.byte 0x19
  3f:	6c                   	insb   (%dx),%es:(%rdi)