Extracting prog: 2m2.428462087s
Minimizing prog: 1h49m28.317327505s
Simplifying prog options: 12m10.621260102s
Extracting C: 5m7.121903739s
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}}): syz_open_dev$admmidi-ioctl$sock_SIOCGIFINDEX-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00'})
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

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}}): syz_open_dev$admmidi-ioctl$sock_SIOCGIFINDEX-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00'})
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in dvb_device_open
single: successfully extracted reproducer
found reproducer with 10 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}}): syz_open_dev$admmidi-ioctl$sock_SIOCGIFINDEX-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00'})
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)

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}}): syz_open_dev$admmidi-ioctl$sock_SIOCGIFINDEX-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00'})
socket$can_j1939(0x1d, 0x2, 0x7)
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)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-ioctl$sock_SIOCGIFINDEX-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00'})
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-ioctl$sock_SIOCGIFINDEX-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00'})
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
writev(0xffffffffffffffff, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-ioctl$sock_SIOCGIFINDEX-socket$can_j1939-openat$sequencer2-prlimit64-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00'})
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-ioctl$sock_SIOCGIFINDEX-socket$can_j1939-openat$sequencer2-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00'})
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-ioctl$sock_SIOCGIFINDEX-socket$can_j1939-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00'})
socket$can_j1939(0x1d, 0x2, 0x7)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-ioctl$sock_SIOCGIFINDEX-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00'})
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in dvb_device_open
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}}): socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, 0x0, 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, 0x0, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(0x0, 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, 0x0, 0x0)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{0x0}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(0x0, 0x0, 0x40002)
syz_clone3(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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
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)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program did not crash
validation run: crashed=false
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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program did not crash
validation run: crashed=false
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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in dvb_frontend_release
validation run: crashed=true
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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program did not crash
validation run: crashed=false
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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program did not crash
validation run: crashed=false
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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program did not crash
validation run: crashed=false
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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program did not crash
validation run: crashed=false
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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in dvb_device_open
validation run: crashed=true
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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program did not crash
validation run: crashed=false
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}}): syz_open_dev$admmidi-socket$can_j1939-openat$sequencer2-prlimit64-sched_setscheduler-syz_open_dev$sndmidi-writev-syz_open_dev$dvb_frontend-syz_clone3
detailed listing:
executing program 0:
syz_open_dev$admmidi(0x0, 0x20, 0x0)
socket$can_j1939(0x1d, 0x2, 0x7)
openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000380)={0x8, 0x100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000000)=0x7)
r0 = syz_open_dev$sndmidi(&(0x7f00000004c0), 0x2, 0x143102)
writev(r0, &(0x7f0000000840)=[{&(0x7f00000002c0)="94", 0xf000}, {0x0}], 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000000), 0x0, 0x40002)
syz_clone3(0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in dvb_device_open
validation run: crashed=true
reproducing took 2h59m42.896581326s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in dvb_device_open+0x33f/0x3b0 drivers/media/dvb-core/dvbdev.c:99
Read of size 8 at addr ffff88802cc3da18 by task syz.2.816/8948

CPU: 3 UID: 0 PID: 8948 Comm: syz.2.816 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x13d/0x4b0 mm/kasan/report.c:482
 kasan_report+0xdf/0x1c0 mm/kasan/report.c:595
 dvb_device_open+0x33f/0x3b0 drivers/media/dvb-core/dvbdev.c:99
 chrdev_open+0x234/0x6a0 fs/char_dev.c:411
 do_dentry_open+0x6ab/0x14d0 fs/open.c:996
 vfs_open+0x82/0x3f0 fs/open.c:1101
 do_open fs/namei.c:4837 [inline]
 path_openat+0x19fa/0x2440 fs/namei.c:5000
 do_file_open+0x20e/0x430 fs/namei.c:5029
 do_sys_openat2+0x10f/0x1e0 fs/open.c:1417
 do_sys_open fs/open.c:1423 [inline]
 __do_sys_openat fs/open.c:1439 [inline]
 __se_sys_openat fs/open.c:1434 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1434
 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: 0033:0x7f907395e98e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f90748b3b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f90748b46c0 RCX: 00007f907395e98e
RDX: 0000000000040002 RSI: 00007f90748b3c00 RDI: ffffffffffffff9c
RBP: 00007f90748b3c00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007f9073c26128 R14: 00007f9073c26090 R15: 00007ffeb95c0048
 </TASK>

Allocated by task 1:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x2e7/0x6b0 mm/slub.c:5484
 _kmalloc_noprof include/linux/slab.h:988 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 dvb_register_device+0x1d6/0x1e20 drivers/media/dvb-core/dvbdev.c:472
 dvb_register_frontend+0x552/0x820 drivers/media/dvb-core/dvb_frontend.c:3074
 vidtv_bridge_dvb_init drivers/media/test-drivers/vidtv/vidtv_bridge.c:438 [inline]
 vidtv_bridge_probe+0x44b/0xa30 drivers/media/test-drivers/vidtv/vidtv_bridge.c:510
 platform_probe+0x106/0x1d0 drivers/base/platform.c:1507
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x210/0x460 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __driver_attach+0x21f/0x5b0 drivers/base/dd.c:1292
 bus_for_each_dev+0x13e/0x1d0 drivers/base/bus.c:383
 bus_add_driver+0x305/0x5b0 drivers/base/bus.c:763
 driver_register+0x1e2/0x360 drivers/base/driver.c:174
 vidtv_bridge_init+0x52/0x80 drivers/media/test-drivers/vidtv/vidtv_bridge.c:602
 do_one_initcall+0x11c/0x6f0 init/main.c:1353
 do_initcall_level init/main.c:1415 [inline]
 do_initcalls init/main.c:1431 [inline]
 do_basic_setup init/main.c:1451 [inline]
 kernel_init_freeable+0x6ea/0x7b0 init/main.c:1666
 kernel_init+0x21/0x1e0 init/main.c:1556
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Freed by task 8939:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2678 [inline]
 slab_free mm/slub.c:6372 [inline]
 kfree+0x22b/0x6c0 mm/slub.c:6687
 dvb_free_device drivers/media/dvb-core/dvbdev.c:616 [inline]
 kref_put include/linux/kref.h:65 [inline]
 dvb_device_put.part.0+0x57/0x90 drivers/media/dvb-core/dvbdev.c:629
 dvb_device_put drivers/media/dvb-core/dvbdev.c:628 [inline]
 dvb_device_open+0x2ba/0x3b0 drivers/media/dvb-core/dvbdev.c:113
 chrdev_open+0x234/0x6a0 fs/char_dev.c:411
 do_dentry_open+0x6ab/0x14d0 fs/open.c:996
 vfs_open+0x82/0x3f0 fs/open.c:1101
 do_open fs/namei.c:4837 [inline]
 path_openat+0x19fa/0x2440 fs/namei.c:5000
 do_file_open+0x20e/0x430 fs/namei.c:5029
 do_sys_openat2+0x10f/0x1e0 fs/open.c:1417
 do_sys_open fs/open.c:1423 [inline]
 __do_sys_openat fs/open.c:1439 [inline]
 __se_sys_openat fs/open.c:1434 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1434
 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

The buggy address belongs to the object at ffff88802cc3da00
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 24 bytes inside of
 freed 256-byte region [ffff88802cc3da00, ffff88802cc3db00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802cc3ca00 pfn:0x2cc3c
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801c042b40 ffffea0000c2e890 ffffea0000b27110
raw: ffff88802cc3ca00 000000080010000f 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff88801c042b40 ffffea0000c2e890 ffffea0000b27110
head: ffff88802cc3ca00 000000080010000f 00000000f5000000 0000000000000000
head: 00fff00000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd2000(__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 11936801450
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1871
 prep_new_page mm/page_alloc.c:1879 [inline]
 get_page_from_freelist+0x110d/0x35b0 mm/page_alloc.c:3943
 __alloc_frozen_pages_noprof+0x2eb/0x3300 mm/page_alloc.c:5436
 alloc_slab_page mm/slub.c:3267 [inline]
 allocate_slab mm/slub.c:3382 [inline]
 new_slab+0xa5/0x640 mm/slub.c:3428
 refill_objects+0xe3/0x410 mm/slub.c:7305
 refill_sheaf mm/slub.c:2805 [inline]
 __pcs_replace_empty_main+0x372/0x680 mm/slub.c:4677
 alloc_from_pcs mm/slub.c:4775 [inline]
 slab_alloc_node mm/slub.c:4907 [inline]
 __do_kmalloc_node mm/slub.c:5336 [inline]
 __kmalloc_noprof+0x66b/0x820 mm/slub.c:5362
 _kmalloc_noprof include/linux/slab.h:992 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 rh_call_control drivers/usb/core/hcd.c:486 [inline]
 rh_urb_enqueue drivers/usb/core/hcd.c:817 [inline]
 usb_hcd_submit_urb+0x5e8/0x2150 drivers/usb/core/hcd.c:1538
 usb_submit_urb+0x827/0x19b0 drivers/usb/core/urb.c:586
 usb_start_wait_urb+0x10e/0x580 drivers/usb/core/message.c:62
 usb_internal_control_msg drivers/usb/core/message.c:117 [inline]
 usb_control_msg+0x328/0x4b0 drivers/usb/core/message.c:167
 usb_get_string+0xab/0x1a0 drivers/usb/core/message.c:902
 usb_string_sub+0x103/0x3b0 drivers/usb/core/message.c:941
 usb_string+0x2ff/0x570 drivers/usb/core/message.c:1046
 usb_cache_string+0x7c/0x100 drivers/usb/core/message.c:1090
 usb_enumerate_device drivers/usb/core/hub.c:2545 [inline]
 usb_new_device.part.0+0x32a/0x1686 drivers/usb/core/hub.c:2673
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88802cc3d900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88802cc3d980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802cc3da00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff88802cc3da80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802cc3db00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in dvb_device_open+0x33f/0x3b0 drivers/media/dvb-core/dvbdev.c:99
Read of size 8 at addr ffff88802cc3da18 by task syz.2.816/8948

CPU: 3 UID: 0 PID: 8948 Comm: syz.2.816 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x13d/0x4b0 mm/kasan/report.c:482
 kasan_report+0xdf/0x1c0 mm/kasan/report.c:595
 dvb_device_open+0x33f/0x3b0 drivers/media/dvb-core/dvbdev.c:99
 chrdev_open+0x234/0x6a0 fs/char_dev.c:411
 do_dentry_open+0x6ab/0x14d0 fs/open.c:996
 vfs_open+0x82/0x3f0 fs/open.c:1101
 do_open fs/namei.c:4837 [inline]
 path_openat+0x19fa/0x2440 fs/namei.c:5000
 do_file_open+0x20e/0x430 fs/namei.c:5029
 do_sys_openat2+0x10f/0x1e0 fs/open.c:1417
 do_sys_open fs/open.c:1423 [inline]
 __do_sys_openat fs/open.c:1439 [inline]
 __se_sys_openat fs/open.c:1434 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1434
 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: 0033:0x7f907395e98e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f90748b3b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f90748b46c0 RCX: 00007f907395e98e
RDX: 0000000000040002 RSI: 00007f90748b3c00 RDI: ffffffffffffff9c
RBP: 00007f90748b3c00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd
R13: 00007f9073c26128 R14: 00007f9073c26090 R15: 00007ffeb95c0048
 </TASK>

Allocated by task 1:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x2e7/0x6b0 mm/slub.c:5484
 _kmalloc_noprof include/linux/slab.h:988 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 dvb_register_device+0x1d6/0x1e20 drivers/media/dvb-core/dvbdev.c:472
 dvb_register_frontend+0x552/0x820 drivers/media/dvb-core/dvb_frontend.c:3074
 vidtv_bridge_dvb_init drivers/media/test-drivers/vidtv/vidtv_bridge.c:438 [inline]
 vidtv_bridge_probe+0x44b/0xa30 drivers/media/test-drivers/vidtv/vidtv_bridge.c:510
 platform_probe+0x106/0x1d0 drivers/base/platform.c:1507
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x210/0x460 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __driver_attach+0x21f/0x5b0 drivers/base/dd.c:1292
 bus_for_each_dev+0x13e/0x1d0 drivers/base/bus.c:383
 bus_add_driver+0x305/0x5b0 drivers/base/bus.c:763
 driver_register+0x1e2/0x360 drivers/base/driver.c:174
 vidtv_bridge_init+0x52/0x80 drivers/media/test-drivers/vidtv/vidtv_bridge.c:602
 do_one_initcall+0x11c/0x6f0 init/main.c:1353
 do_initcall_level init/main.c:1415 [inline]
 do_initcalls init/main.c:1431 [inline]
 do_basic_setup init/main.c:1451 [inline]
 kernel_init_freeable+0x6ea/0x7b0 init/main.c:1666
 kernel_init+0x21/0x1e0 init/main.c:1556
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Freed by task 8939:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2678 [inline]
 slab_free mm/slub.c:6372 [inline]
 kfree+0x22b/0x6c0 mm/slub.c:6687
 dvb_free_device drivers/media/dvb-core/dvbdev.c:616 [inline]
 kref_put include/linux/kref.h:65 [inline]
 dvb_device_put.part.0+0x57/0x90 drivers/media/dvb-core/dvbdev.c:629
 dvb_device_put drivers/media/dvb-core/dvbdev.c:628 [inline]
 dvb_device_open+0x2ba/0x3b0 drivers/media/dvb-core/dvbdev.c:113
 chrdev_open+0x234/0x6a0 fs/char_dev.c:411
 do_dentry_open+0x6ab/0x14d0 fs/open.c:996
 vfs_open+0x82/0x3f0 fs/open.c:1101
 do_open fs/namei.c:4837 [inline]
 path_openat+0x19fa/0x2440 fs/namei.c:5000
 do_file_open+0x20e/0x430 fs/namei.c:5029
 do_sys_openat2+0x10f/0x1e0 fs/open.c:1417
 do_sys_open fs/open.c:1423 [inline]
 __do_sys_openat fs/open.c:1439 [inline]
 __se_sys_openat fs/open.c:1434 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1434
 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

The buggy address belongs to the object at ffff88802cc3da00
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 24 bytes inside of
 freed 256-byte region [ffff88802cc3da00, ffff88802cc3db00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802cc3ca00 pfn:0x2cc3c
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801c042b40 ffffea0000c2e890 ffffea0000b27110
raw: ffff88802cc3ca00 000000080010000f 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff88801c042b40 ffffea0000c2e890 ffffea0000b27110
head: ffff88802cc3ca00 000000080010000f 00000000f5000000 0000000000000000
head: 00fff00000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd2000(__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 11936801450
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1871
 prep_new_page mm/page_alloc.c:1879 [inline]
 get_page_from_freelist+0x110d/0x35b0 mm/page_alloc.c:3943
 __alloc_frozen_pages_noprof+0x2eb/0x3300 mm/page_alloc.c:5436
 alloc_slab_page mm/slub.c:3267 [inline]
 allocate_slab mm/slub.c:3382 [inline]
 new_slab+0xa5/0x640 mm/slub.c:3428
 refill_objects+0xe3/0x410 mm/slub.c:7305
 refill_sheaf mm/slub.c:2805 [inline]
 __pcs_replace_empty_main+0x372/0x680 mm/slub.c:4677
 alloc_from_pcs mm/slub.c:4775 [inline]
 slab_alloc_node mm/slub.c:4907 [inline]
 __do_kmalloc_node mm/slub.c:5336 [inline]
 __kmalloc_noprof+0x66b/0x820 mm/slub.c:5362
 _kmalloc_noprof include/linux/slab.h:992 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 rh_call_control drivers/usb/core/hcd.c:486 [inline]
 rh_urb_enqueue drivers/usb/core/hcd.c:817 [inline]
 usb_hcd_submit_urb+0x5e8/0x2150 drivers/usb/core/hcd.c:1538
 usb_submit_urb+0x827/0x19b0 drivers/usb/core/urb.c:586
 usb_start_wait_urb+0x10e/0x580 drivers/usb/core/message.c:62
 usb_internal_control_msg drivers/usb/core/message.c:117 [inline]
 usb_control_msg+0x328/0x4b0 drivers/usb/core/message.c:167
 usb_get_string+0xab/0x1a0 drivers/usb/core/message.c:902
 usb_string_sub+0x103/0x3b0 drivers/usb/core/message.c:941
 usb_string+0x2ff/0x570 drivers/usb/core/message.c:1046
 usb_cache_string+0x7c/0x100 drivers/usb/core/message.c:1090
 usb_enumerate_device drivers/usb/core/hub.c:2545 [inline]
 usb_new_device.part.0+0x32a/0x1686 drivers/usb/core/hub.c:2673
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88802cc3d900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88802cc3d980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802cc3da00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff88802cc3da80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802cc3db00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================