Extracting prog: 56.977825103s
Minimizing prog: 9m39.228628912s
Simplifying prog options: 0s
Extracting C: 22.291196166s
Simplifying C: 3m7.271896195s


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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)

program did not crash
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}}): mkdirat-mount-openat-write-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
ioctl$FE_GET_PROPERTY(0xffffffffffffffff, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mkdirat-mount-openat-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
r0 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r0, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mkdirat-mount-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000100)='+p', 0x2)
r0 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r0, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mkdirat-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, 0x0, 0x0)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100), 0x0)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(0x0, 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program did not crash
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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, 0x0)

program did not crash
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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, 0x0})

program did not crash
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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)})

program did not crash
extracting C reproducer
testing compiled C 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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
simplifying C reproducer
testing compiled C program (duration=30s, {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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
testing program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-syz_open_dev$dvb_frontend-ioctl$FE_GET_PROPERTY
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./debug\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./debug\x00', &(0x7f0000000180)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./debug/dynamic_debug/control\x00', 0x2, 0x60)
write(r0, &(0x7f0000000100)='+p', 0x2)
r1 = syz_open_dev$dvb_frontend(&(0x7f0000000080), 0x0, 0x2)
ioctl$FE_GET_PROPERTY(r1, 0x80106f53, &(0x7f0000000c00)={0x5, &(0x7f0000000a80)=[{0x16, '\x00', @data=0x6, 0x10}, {0x2f, '\x00', @buffer={"08ca57e2621c7714537e2fbdd5756cd001fbe96f400623427d72df4be97a4ba5", 0x20}, 0x3}, {0x31, '\x00', @st={0x4, [{0x0, @uvalue=0x6}, {0x0, @uvalue=0x58b7}, {0x1, @uvalue=0x9}, {0x0, @svalue=0x7fff}]}}, {0x2b, '\x00', @data=0x1, 0x1000}, {0x22, '\x00', @st={0x4, [{0x2, @uvalue=0x7}, {0x2, @svalue=0x9}, {0x2, @uvalue=0x7}, {0x3, @uvalue=0x80000000}]}, 0x7}]})

program crashed: KASAN: slab-out-of-bounds Read in __dynamic_dev_dbg
validation run: crashed=true
reproducing took 15m59.806463605s
repro crashed as (corrupted=false):
i2c i2c-1: dtv_property_process_get: GET cmd 0x00000031 (DTV_ATSCMH_SGN) len 0: 
i2c i2c-1: dtv_property_process_get: GET cmd 0x0000002b (DTV_DVBT2_PLP_ID_LEGACY) len 0: 
==================================================================
BUG: KASAN: slab-out-of-bounds in hex_string+0x480/0x4d0 lib/vsprintf.c:1209
Read of size 1 at addr ffff888031305d7c by task syz.0.17/5919

CPU: 2 UID: 0 PID: 5919 Comm: syz.0.17 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
 hex_string+0x480/0x4d0 lib/vsprintf.c:1209
 pointer+0x3f2/0xe50 lib/vsprintf.c:2548
 vsnprintf+0x649/0x1300 lib/vsprintf.c:2953
 va_format+0x14e/0x4b0 lib/vsprintf.c:1725
 pointer+0x929/0xe50 lib/vsprintf.c:2577
 vsnprintf+0x649/0x1300 lib/vsprintf.c:2953
 vscnprintf+0x40/0x90 lib/vsprintf.c:3018
 printk_sprint+0x31/0x330 kernel/printk/printk.c:2222
 vprintk_store+0x507/0xbe0 kernel/printk/printk.c:2364
 vprintk_emit+0x139/0x6b0 kernel/printk/printk.c:2455
 dev_vprintk_emit+0x391/0x3e0 drivers/base/core.c:5000
 dev_printk_emit+0xd2/0x10d drivers/base/core.c:5011
 __dynamic_dev_dbg+0x252/0x310 lib/dynamic_debug.c:904
 dtv_property_process_get.isra.0+0xf40/0x3690 drivers/media/dvb-core/dvb_frontend.c:1595
 dvb_get_property.isra.0+0x273/0x690 drivers/media/dvb-core/dvb_frontend.c:2397
 dvb_frontend_handle_ioctl+0x138c/0x2f00 drivers/media/dvb-core/dvb_frontend.c:2478
 dvb_frontend_do_ioctl+0x1ce/0x320 drivers/media/dvb-core/dvb_frontend.c:2101
 dvb_usercopy+0x167/0x340 drivers/media/dvb-core/dvbdev.c:996
 dvb_frontend_ioctl+0x50/0x80 drivers/media/dvb-core/dvb_frontend.c:2115
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 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: 0033:0x7f3348f9e1d9
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:00007fffada516f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3349225fa0 RCX: 00007f3348f9e1d9
RDX: 0000200000000c00 RSI: 0000000080106f53 RDI: 0000000000000004
RBP: 00007f3349035888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3349225fac R14: 00007f3349225fa0 R15: 00007f3349225fa0
 </TASK>

Allocated by task 5919:
 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:409 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:426
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __do_kmalloc_node mm/slub.c:5414 [inline]
 __kmalloc_node_track_caller_noprof+0x33d/0x870 mm/slub.c:5545
 memdup_user+0x2a/0xe0 mm/util.c:221
 memdup_array_user include/linux/string.h:39 [inline]
 dvb_get_property.isra.0+0x162/0x690 drivers/media/dvb-core/dvb_frontend.c:2380
 dvb_frontend_handle_ioctl+0x138c/0x2f00 drivers/media/dvb-core/dvb_frontend.c:2478
 dvb_frontend_do_ioctl+0x1ce/0x320 drivers/media/dvb-core/dvb_frontend.c:2101
 dvb_usercopy+0x167/0x340 drivers/media/dvb-core/dvbdev.c:996
 dvb_frontend_ioctl+0x50/0x80 drivers/media/dvb-core/dvb_frontend.c:2115
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 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 ffff888031305c00
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 0 bytes to the right of
 allocated 380-byte region [ffff888031305c00, ffff888031305d7c)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888031304800 pfn:0x31304
head: order:2 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 ffff88801d042c80 ffff88801d0407c8 ffffea0000c91910
raw: ffff888031304800 000000000010000e 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff88801d042c80 ffff88801d0407c8 ffffea0000c91910
head: ffff888031304800 000000000010000e 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffffffffffff01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5792, tgid 5792 (syz-executor), ts 50525136010
 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/0x35d0 mm/page_alloc.c:3943
 __alloc_frozen_pages_noprof+0x2eb/0x3300 mm/page_alloc.c:5436
 alloc_slab_page mm/slub.c:3347 [inline]
 allocate_slab mm/slub.c:3462 [inline]
 new_slab+0xa9/0x6e0 mm/slub.c:3513
 refill_objects+0xe3/0x410 mm/slub.c:7418
 refill_sheaf mm/slub.c:2885 [inline]
 __pcs_replace_empty_main+0x35e/0x650 mm/slub.c:4774
 alloc_from_pcs mm/slub.c:4850 [inline]
 slab_alloc_node mm/slub.c:4984 [inline]
 __kmalloc_cache_noprof+0x4f4/0x6d0 mm/slub.c:5559
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 mca_alloc net/ipv6/mcast.c:890 [inline]
 __ipv6_dev_mc_inc+0x2f1/0xc80 net/ipv6/mcast.c:981
 ipv6_add_dev+0xb87/0x1520 net/ipv6/addrconf.c:475
 addrconf_notify+0x5db/0x1ba0 net/ipv6/addrconf.c:3686
 notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85
 call_netdevice_notifiers_info+0xbe/0x110 net/core/dev.c:2275
 call_netdevice_notifiers_extack net/core/dev.c:2313 [inline]
 call_netdevice_notifiers net/core/dev.c:2327 [inline]
 register_netdevice+0x1998/0x25a0 net/core/dev.c:11587
 __ip_tunnel_create+0x52b/0x670 net/ipv4/ip_tunnel.c:268
 ip_tunnel_init_net+0x230/0x780 net/ipv4/ip_tunnel.c:1137
 ops_init+0x1e2/0x5f0 net/core/net_namespace.c:137
page last free pid 1 tgid 1 ts 11764720504 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 __free_frozen_pages+0x79f/0x10f0 mm/page_alloc.c:2962
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:361
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4683 [inline]
 slab_alloc_node mm/slub.c:4996 [inline]
 __kmalloc_cache_noprof+0x278/0x6d0 mm/slub.c:5559
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 selinux_genfs_get_sid security/selinux/hooks.c:1348 [inline]
 inode_doinit_with_dentry+0x7b1/0x1340 security/selinux/hooks.c:1572
 sb_finish_set_opts+0x3fc/0x850 security/selinux/hooks.c:608
 selinux_set_mnt_opts+0x12b2/0x1a10 security/selinux/hooks.c:888
 __iterate_supers+0x3b7/0x4a0 fs/super.c:980
 selinux_policy_commit+0x89f/0xb00 security/selinux/ss/services.c:2286
 sel_write_load+0x34a/0x560 security/selinux/selinuxfs.c:581
 vfs_write+0x2aa/0x1050 fs/read_write.c:685
 ksys_write+0x12a/0x250 fs/read_write.c:739
 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

Memory state around the buggy address:
 ffff888031305c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888031305c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888031305d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04
                                                                ^
 ffff888031305d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888031305e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

final repro crashed as (corrupted=false):
i2c i2c-1: dtv_property_process_get: GET cmd 0x00000031 (DTV_ATSCMH_SGN) len 0: 
i2c i2c-1: dtv_property_process_get: GET cmd 0x0000002b (DTV_DVBT2_PLP_ID_LEGACY) len 0: 
==================================================================
BUG: KASAN: slab-out-of-bounds in hex_string+0x480/0x4d0 lib/vsprintf.c:1209
Read of size 1 at addr ffff888031305d7c by task syz.0.17/5919

CPU: 2 UID: 0 PID: 5919 Comm: syz.0.17 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
 hex_string+0x480/0x4d0 lib/vsprintf.c:1209
 pointer+0x3f2/0xe50 lib/vsprintf.c:2548
 vsnprintf+0x649/0x1300 lib/vsprintf.c:2953
 va_format+0x14e/0x4b0 lib/vsprintf.c:1725
 pointer+0x929/0xe50 lib/vsprintf.c:2577
 vsnprintf+0x649/0x1300 lib/vsprintf.c:2953
 vscnprintf+0x40/0x90 lib/vsprintf.c:3018
 printk_sprint+0x31/0x330 kernel/printk/printk.c:2222
 vprintk_store+0x507/0xbe0 kernel/printk/printk.c:2364
 vprintk_emit+0x139/0x6b0 kernel/printk/printk.c:2455
 dev_vprintk_emit+0x391/0x3e0 drivers/base/core.c:5000
 dev_printk_emit+0xd2/0x10d drivers/base/core.c:5011
 __dynamic_dev_dbg+0x252/0x310 lib/dynamic_debug.c:904
 dtv_property_process_get.isra.0+0xf40/0x3690 drivers/media/dvb-core/dvb_frontend.c:1595
 dvb_get_property.isra.0+0x273/0x690 drivers/media/dvb-core/dvb_frontend.c:2397
 dvb_frontend_handle_ioctl+0x138c/0x2f00 drivers/media/dvb-core/dvb_frontend.c:2478
 dvb_frontend_do_ioctl+0x1ce/0x320 drivers/media/dvb-core/dvb_frontend.c:2101
 dvb_usercopy+0x167/0x340 drivers/media/dvb-core/dvbdev.c:996
 dvb_frontend_ioctl+0x50/0x80 drivers/media/dvb-core/dvb_frontend.c:2115
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 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: 0033:0x7f3348f9e1d9
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:00007fffada516f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3349225fa0 RCX: 00007f3348f9e1d9
RDX: 0000200000000c00 RSI: 0000000080106f53 RDI: 0000000000000004
RBP: 00007f3349035888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3349225fac R14: 00007f3349225fa0 R15: 00007f3349225fa0
 </TASK>

Allocated by task 5919:
 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:409 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:426
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __do_kmalloc_node mm/slub.c:5414 [inline]
 __kmalloc_node_track_caller_noprof+0x33d/0x870 mm/slub.c:5545
 memdup_user+0x2a/0xe0 mm/util.c:221
 memdup_array_user include/linux/string.h:39 [inline]
 dvb_get_property.isra.0+0x162/0x690 drivers/media/dvb-core/dvb_frontend.c:2380
 dvb_frontend_handle_ioctl+0x138c/0x2f00 drivers/media/dvb-core/dvb_frontend.c:2478
 dvb_frontend_do_ioctl+0x1ce/0x320 drivers/media/dvb-core/dvb_frontend.c:2101
 dvb_usercopy+0x167/0x340 drivers/media/dvb-core/dvbdev.c:996
 dvb_frontend_ioctl+0x50/0x80 drivers/media/dvb-core/dvb_frontend.c:2115
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 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 ffff888031305c00
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 0 bytes to the right of
 allocated 380-byte region [ffff888031305c00, ffff888031305d7c)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888031304800 pfn:0x31304
head: order:2 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 ffff88801d042c80 ffff88801d0407c8 ffffea0000c91910
raw: ffff888031304800 000000000010000e 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff88801d042c80 ffff88801d0407c8 ffffea0000c91910
head: ffff888031304800 000000000010000e 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffffffffffff01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5792, tgid 5792 (syz-executor), ts 50525136010
 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/0x35d0 mm/page_alloc.c:3943
 __alloc_frozen_pages_noprof+0x2eb/0x3300 mm/page_alloc.c:5436
 alloc_slab_page mm/slub.c:3347 [inline]
 allocate_slab mm/slub.c:3462 [inline]
 new_slab+0xa9/0x6e0 mm/slub.c:3513
 refill_objects+0xe3/0x410 mm/slub.c:7418
 refill_sheaf mm/slub.c:2885 [inline]
 __pcs_replace_empty_main+0x35e/0x650 mm/slub.c:4774
 alloc_from_pcs mm/slub.c:4850 [inline]
 slab_alloc_node mm/slub.c:4984 [inline]
 __kmalloc_cache_noprof+0x4f4/0x6d0 mm/slub.c:5559
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 mca_alloc net/ipv6/mcast.c:890 [inline]
 __ipv6_dev_mc_inc+0x2f1/0xc80 net/ipv6/mcast.c:981
 ipv6_add_dev+0xb87/0x1520 net/ipv6/addrconf.c:475
 addrconf_notify+0x5db/0x1ba0 net/ipv6/addrconf.c:3686
 notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85
 call_netdevice_notifiers_info+0xbe/0x110 net/core/dev.c:2275
 call_netdevice_notifiers_extack net/core/dev.c:2313 [inline]
 call_netdevice_notifiers net/core/dev.c:2327 [inline]
 register_netdevice+0x1998/0x25a0 net/core/dev.c:11587
 __ip_tunnel_create+0x52b/0x670 net/ipv4/ip_tunnel.c:268
 ip_tunnel_init_net+0x230/0x780 net/ipv4/ip_tunnel.c:1137
 ops_init+0x1e2/0x5f0 net/core/net_namespace.c:137
page last free pid 1 tgid 1 ts 11764720504 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 __free_frozen_pages+0x79f/0x10f0 mm/page_alloc.c:2962
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:361
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4683 [inline]
 slab_alloc_node mm/slub.c:4996 [inline]
 __kmalloc_cache_noprof+0x278/0x6d0 mm/slub.c:5559
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 selinux_genfs_get_sid security/selinux/hooks.c:1348 [inline]
 inode_doinit_with_dentry+0x7b1/0x1340 security/selinux/hooks.c:1572
 sb_finish_set_opts+0x3fc/0x850 security/selinux/hooks.c:608
 selinux_set_mnt_opts+0x12b2/0x1a10 security/selinux/hooks.c:888
 __iterate_supers+0x3b7/0x4a0 fs/super.c:980
 selinux_policy_commit+0x89f/0xb00 security/selinux/ss/services.c:2286
 sel_write_load+0x34a/0x560 security/selinux/selinuxfs.c:581
 vfs_write+0x2aa/0x1050 fs/read_write.c:685
 ksys_write+0x12a/0x250 fs/read_write.c:739
 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

Memory state around the buggy address:
 ffff888031305c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888031305c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888031305d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04
                                                                ^
 ffff888031305d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888031305e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================