Extracting prog: 6m13.535489672s
Minimizing prog: 14m25.10382741s
Simplifying prog options: 0s
Extracting C: 53.19559139s
Simplifying C: 10m41.649770381s


extracting reproducer from 35 programs
testing a last program of every proc
single: executing 7 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): iopl-timer_create-fcntl$lock-mprotect-timer_settime-mmap-socket$tipc-bind$tipc-socket$tipc-setsockopt$TIPC_GROUP_JOIN-sendmsg$tipc
detailed listing:
executing program 0:
iopl(0x3)
timer_create(0x0, &(0x7f0000000240)={0x0, 0x21, 0x0, @thr={0x0, 0x0}}, &(0x7f0000000300))
fcntl$lock(0xffffffffffffffff, 0x25, &(0x7f0000000040)={0x0, 0x0, 0xfd8b, 0x5})
mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1)
timer_settime(0x0, 0x1, &(0x7f0000000040)={{}, {0x77359400}}, 0x0)
mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xb320a000)
r0 = socket$tipc(0x1e, 0x5, 0x0)
bind$tipc(r0, &(0x7f0000000240)=@name={0x1e, 0x2, 0x0, {{0x42}}}, 0x10)
r1 = socket$tipc(0x1e, 0x2, 0x0)
setsockopt$TIPC_GROUP_JOIN(r1, 0x10f, 0x87, &(0x7f0000000180)={0x42, 0x0, 0x2}, 0x10)
sendmsg$tipc(r1, &(0x7f0000000540)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4044050}, 0x8010)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): prctl$PR_SCHED_CORE-close_range-timer_create-fcntl$lock-readv-mprotect-timer_settime-mmap-socket$rds-bind$rds-sendmsg$inet-sendmsg$rds
detailed listing:
executing program 0:
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x2)
timer_create(0x0, &(0x7f00000000c0)={0x0, 0x21, 0x2, @thr={0x0, 0x0}}, &(0x7f0000000300)=<r0=>0x0)
fcntl$lock(0xffffffffffffffff, 0x24, &(0x7f0000000040)={0x0, 0x0, 0x10000, 0x5})
readv(0xffffffffffffffff, 0x0, 0x0)
mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1)
timer_settime(r0, 0x1, &(0x7f0000000040)={{}, {0x0, 0x989680}}, 0x0)
mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x2000006, 0x204031, 0xffffffffffffffff, 0xec776000)
r1 = socket$rds(0x15, 0x5, 0x0)
bind$rds(r1, &(0x7f0000000040)={0x2, 0x4e21, @local}, 0x10)
sendmsg$inet(r1, &(0x7f0000000480)={&(0x7f0000000000)={0x2, 0x4e22, @initdev={0xac, 0x1e, 0x1, 0x0}}, 0x10, &(0x7f0000000380)=[{&(0x7f00000001c0)="91cfdfefdb", 0x1a000}], 0x1}, 0x0)
sendmsg$rds(r1, &(0x7f0000000140)={&(0x7f0000000240)={0x2, 0xce21, @private=0xa010102}, 0x10, 0x0, 0x0, 0x0, 0x0, 0x8c0}, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): landlock_create_ruleset-landlock_restrict_self-landlock_restrict_self-landlock_create_ruleset-socket$unix-socket$unix-bind$unix-pipe2-pipe2-splice-landlock_restrict_self-connect$unix
detailed listing:
executing program 0:
r0 = landlock_create_ruleset(&(0x7f0000000040)={0x0, 0x3}, 0x10, 0x0)
landlock_restrict_self(r0, 0x0)
landlock_restrict_self(r0, 0x0)
r1 = landlock_create_ruleset(&(0x7f0000000040)={0x14985, 0x3, 0x3}, 0x18, 0x0)
r2 = socket$unix(0x1, 0x1, 0x0)
r3 = socket$unix(0x1, 0x1, 0x0)
bind$unix(r3, &(0x7f0000003000)=@file={0x1, './file0\x00'}, 0x6e)
pipe2(&(0x7f0000000000)={<r4=>0xffffffffffffffff}, 0x80000)
pipe2(&(0x7f0000000040)={0xffffffffffffffff, <r5=>0xffffffffffffffff}, 0x80)
splice(r4, 0x0, r5, 0x0, 0x6, 0xc)
landlock_restrict_self(r1, 0x1)
connect$unix(r2, &(0x7f00000002c0)=@file={0x1, './file0\x00'}, 0x6e)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-socket$inet_tcp-bind$inet-listen-connect$inet-accept$inet-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$BPF_PROG_ATTACH-bpf$MAP_UPDATE_ELEM-sendto
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
r1 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x4e20, @loopback}, 0x10)
listen(r0, 0x8)
connect$inet(r1, &(0x7f0000000010)={0x2, 0x4e20, @loopback}, 0x10)
r2 = accept$inet(r0, 0x0, 0x0)
r3 = bpf$MAP_CREATE(0x0, &(0x7f0000000080)=@base={0xf, 0x4, 0x4, 0x1, 0x0, 0x0, 0x0, '\x00', 0x0, 0x0}, 0x48)
r4 = bpf$PROG_LOAD(0x5, &(0x7f0000000200)={0x10, 0x6, &(0x7f0000000300)=@raw=[@map_fd={0x18, 0x2, 0x1, 0x0, r3}, @generic={0xb7, 0x3}, @generic={0xb7, 0x4}, @generic={0x85, 0x0, 0x0, 0x0, 0x3c}, @generic={0x95}], &(0x7f0000000400)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @sk_msg=0x7, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
bpf$BPF_PROG_ATTACH(0x8, &(0x7f0000000500)={@map=r3, r4, 0x7, 0x0, 0x0, @void, @value=0x0}, 0x10)
bpf$MAP_UPDATE_ELEM(0x2, &(0x7f0000000600)={r3, &(0x7f0000000640), &(0x7f0000000680)=@tcp=r2}, 0x20)
sendto(r2, &(0x7f0000000700)='ab', 0xfffffcf4, 0x11, 0x0, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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-syz_usb_connect-nanosleep-openat-ioctl-ioctl-ioctl-ioctl-ioctl-ioctl
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mydev\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='devtmpfs\x00', &(0x7f0000000000)='./mydev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0)
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)
nanosleep(&(0x7f0000000200)={0x1}, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./mydev/v4l-touch0\x00', 0x2, 0x0)
ioctl(r0, 0xc0145608, &(0x7f0000000400)="03000000010000000100"/20)
ioctl(r0, 0xc0405610, &(0x7f0000000500)="0100"/64)
ioctl(r0, 0xc0145608, &(0x7f0000000b00)="00000000010000000100"/20)
ioctl(r0, 0xc0145608, &(0x7f0000000600)="03000000010000000400"/20)
ioctl(r0, 0xc058560f, &(0x7f0000000700)="0000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000500000000000000002c0100"/84)
ioctl(r0, 0xc0145608, &(0x7f0000000b00)="00000000010000000400"/20)

program crashed: KASAN: slab-use-after-free Read in input_dev_uevent
single: successfully extracted reproducer
found reproducer with 11 syscalls
minimizing guilty program
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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-syz_usb_connect-nanosleep-openat-ioctl-ioctl-ioctl-ioctl-ioctl
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mydev\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='devtmpfs\x00', &(0x7f0000000000)='./mydev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0)
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)
nanosleep(&(0x7f0000000200)={0x1}, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./mydev/v4l-touch0\x00', 0x2, 0x0)
ioctl(r0, 0xc0145608, &(0x7f0000000400)="03000000010000000100"/20)
ioctl(r0, 0xc0405610, &(0x7f0000000500)="0100"/64)
ioctl(r0, 0xc0145608, &(0x7f0000000b00)="00000000010000000100"/20)
ioctl(r0, 0xc0145608, &(0x7f0000000600)="03000000010000000400"/20)
ioctl(r0, 0xc058560f, &(0x7f0000000700)="0000000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000500000000000000002c0100"/84)

program crashed: KASAN: slab-use-after-free Read in input_dev_uevent
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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-syz_usb_connect-nanosleep-openat-ioctl-ioctl-ioctl-ioctl
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mydev\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='devtmpfs\x00', &(0x7f0000000000)='./mydev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0)
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)
nanosleep(&(0x7f0000000200)={0x1}, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./mydev/v4l-touch0\x00', 0x2, 0x0)
ioctl(r0, 0xc0145608, &(0x7f0000000400)="03000000010000000100"/20)
ioctl(r0, 0xc0405610, &(0x7f0000000500)="0100"/64)
ioctl(r0, 0xc0145608, &(0x7f0000000b00)="00000000010000000100"/20)
ioctl(r0, 0xc0145608, &(0x7f0000000600)="03000000010000000400"/20)

program crashed: KASAN: slab-use-after-free Read in input_dev_uevent
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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-syz_usb_connect-nanosleep-openat-ioctl-ioctl-ioctl
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mydev\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='devtmpfs\x00', &(0x7f0000000000)='./mydev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0)
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)
nanosleep(&(0x7f0000000200)={0x1}, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./mydev/v4l-touch0\x00', 0x2, 0x0)
ioctl(r0, 0xc0145608, &(0x7f0000000400)="03000000010000000100"/20)
ioctl(r0, 0xc0405610, &(0x7f0000000500)="0100"/64)
ioctl(r0, 0xc0145608, &(0x7f0000000b00)="00000000010000000100"/20)

program crashed: KASAN: slab-use-after-free Read in input_dev_uevent
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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-syz_usb_connect-nanosleep-openat-ioctl-ioctl
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mydev\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='devtmpfs\x00', &(0x7f0000000000)='./mydev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0)
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)
nanosleep(&(0x7f0000000200)={0x1}, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./mydev/v4l-touch0\x00', 0x2, 0x0)
ioctl(r0, 0xc0145608, &(0x7f0000000400)="03000000010000000100"/20)
ioctl(r0, 0xc0405610, &(0x7f0000000500)="0100"/64)

program crashed: KASAN: slab-use-after-free Read in input_dev_uevent
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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-syz_usb_connect-nanosleep-openat-ioctl
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mydev\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='devtmpfs\x00', &(0x7f0000000000)='./mydev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0)
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)
nanosleep(&(0x7f0000000200)={0x1}, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./mydev/v4l-touch0\x00', 0x2, 0x0)
ioctl(r0, 0xc0145608, &(0x7f0000000400)="03000000010000000100"/20)

program crashed: KASAN: slab-use-after-free Read in input_dev_uevent
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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-syz_usb_connect-nanosleep-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mydev\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='devtmpfs\x00', &(0x7f0000000000)='./mydev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0)
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)
nanosleep(&(0x7f0000000200)={0x1}, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000300)='./mydev/v4l-touch0\x00', 0x2, 0x0)

program crashed: KASAN: slab-use-after-free Read in input_dev_uevent
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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-syz_usb_connect-nanosleep
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mydev\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='devtmpfs\x00', &(0x7f0000000000)='./mydev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0)
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)
nanosleep(&(0x7f0000000200)={0x1}, 0x0)

program crashed: KASAN: slab-use-after-free Read in input_dev_uevent
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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-syz_usb_connect
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mydev\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='devtmpfs\x00', &(0x7f0000000000)='./mydev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0)
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)

program crashed: KASAN: slab-use-after-free Read in sur40_open
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mydev\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='devtmpfs\x00', &(0x7f0000000000)='./mydev\x00', &(0x7f0000000080)='devtmpfs\x00', 0x0, 0x0)

program did not crash
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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-syz_usb_connect
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mydev\x00', 0x1ff)
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)

program crashed: KASAN: slab-use-after-free Read in sur40_open
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)

program crashed: KASAN: slab-use-after-free Read in sur40_open
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x47, 0x0, 0x0)

program did not crash
testing program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB], 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=46.520018434s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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_usb_connect
program crashed: KASAN: slab-use-after-free Read in sur40_open
simplifying C reproducer
testing compiled C program (duration=46.520018434s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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_usb_connect
program crashed: KASAN: slab-use-after-free Read in sur40_open
testing compiled C program (duration=46.520018434s, {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}}): syz_usb_connect
program did not crash
testing compiled C program (duration=46.520018434s, {Threaded:false 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_usb_connect
program did not crash
testing compiled C program (duration=46.520018434s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in sur40_open
testing compiled C program (duration=46.520018434s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in sur40_open
testing compiled C program (duration=46.520018434s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in sur40_open
testing compiled C program (duration=46.520018434s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in sur40_open
testing compiled C program (duration=46.520018434s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in sur40_open
testing program (duration=46.520018434s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)

program crashed: KASAN: slab-use-after-free Read in sur40_open
validation run: crashed=true
testing program (duration=46.520018434s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)

program did not crash
validation run: crashed=false
testing program (duration=46.520018434s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)

program crashed: KASAN: slab-use-after-free Read in input_dev_uevent
validation run: crashed=true
testing program (duration=46.520018434s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x47, &(0x7f0000000100)=ANY=[@ANYBLOB="12010002ff0000405e04750700010102000109023500010100a0320904000005ff0000000705810200020007058202000200070583020002000705840200020007058602000200"], 0x0)

program crashed: KASAN: slab-use-after-free Read in sur40_open
validation run: crashed=true
reproducing took 37m47.153020277s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in sur40_init drivers/input/touchscreen/sur40.c:352 [inline]
BUG: KASAN: slab-use-after-free in sur40_open+0x46c/0x500 drivers/input/touchscreen/sur40.c:397
Read of size 8 at addr ffff888026ad6000 by task udevd/5622

CPU: 0 UID: 0 PID: 5622 Comm: udevd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
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
 sur40_init drivers/input/touchscreen/sur40.c:352 [inline]
 sur40_open+0x46c/0x500 drivers/input/touchscreen/sur40.c:397
 input_open_device+0x24c/0x3d0 drivers/input/input.c:601
 evdev_open_device drivers/input/evdev.c:391 [inline]
 evdev_open+0x52f/0x690 drivers/input/evdev.c:478
 chrdev_open+0x234/0x6a0 fs/char_dev.c:411
 do_dentry_open+0x6ab/0x14d0 fs/open.c:947
 vfs_open+0x82/0x3f0 fs/open.c:1052
 do_open fs/namei.c:4700 [inline]
 path_openat+0x2873/0x4280 fs/namei.c:4863
 do_file_open+0x20e/0x430 fs/namei.c:4892
 do_sys_openat2+0x10f/0x1e0 fs/open.c:1368
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1385
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f84a69c8407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffe67d24590 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f84a639b880 RCX: 00007f84a69c8407
RDX: 0000000000080000 RSI: 000055652cf46fe0 RDI: ffffffffffffff9c
RBP: 000055652cf55be0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00005564f5c170c8
R13: 00005564f5c170ce R14: 00007ffe67d24b90 R15: 00005564f5c1dbcc
 </TASK>

Allocated by task 5943:
 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+0x2e5/0x6c0 mm/slub.c:5489
 _kmalloc_noprof include/linux/slab.h:988 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 sur40_probe+0x1a8/0x1580 drivers/input/touchscreen/sur40.c:675
 usb_probe_interface+0x303/0x8f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 usb_set_configuration+0xd97/0x1c60 drivers/usb/core/message.c:2268
 usb_generic_driver_probe+0xa1/0xe0 drivers/usb/core/generic.c:250
 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 usb_new_device.cold+0x685/0x115c drivers/usb/core/hub.c:2695
 hub_port_connect drivers/usb/core/hub.c:5567 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x30a3/0x4a60 drivers/usb/core/hub.c:5953
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Freed by task 5943:
 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:2677 [inline]
 slab_free mm/slub.c:6377 [inline]
 kfree+0x22b/0x6c0 mm/slub.c:6692
 sur40_probe+0xc36/0x1580 drivers/input/touchscreen/sur40.c:816
 usb_probe_interface+0x303/0x8f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 usb_set_configuration+0xd97/0x1c60 drivers/usb/core/message.c:2268
 usb_generic_driver_probe+0xa1/0xe0 drivers/usb/core/generic.c:250
 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 usb_new_device.cold+0x685/0x115c drivers/usb/core/hub.c:2695
 hub_port_connect drivers/usb/core/hub.c:5567 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x30a3/0x4a60 drivers/usb/core/hub.c:5953
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff888026ad6000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 0 bytes inside of
 freed 4096-byte region [ffff888026ad6000, ffff888026ad7000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x26ad0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88813fe28140 dead000000000122 0000000000000000
raw: 0000000000000000 0000000800040004 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88813fe28140 dead000000000122 0000000000000000
head: 0000000000000000 0000000800040004 00000000f5000000 0000000000000000
head: 00fff00000000003 fffffffffffffe01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5943, tgid 5943 (kworker/0:8), ts 90851228495, free_ts 87377699421
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0xf48/0x3530 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x299/0x2dc0 mm/page_alloc.c:5304
 alloc_slab_page mm/slub.c:3266 [inline]
 allocate_slab mm/slub.c:3380 [inline]
 new_slab+0xa2/0x640 mm/slub.c:3426
 refill_objects+0xe3/0x410 mm/slub.c:7310
 refill_sheaf mm/slub.c:2804 [inline]
 __pcs_replace_empty_main+0x376/0x680 mm/slub.c:4675
 alloc_from_pcs mm/slub.c:4773 [inline]
 slab_alloc_node mm/slub.c:4905 [inline]
 __kmalloc_cache_noprof+0x479/0x6c0 mm/slub.c:5485
 _kmalloc_noprof include/linux/slab.h:988 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 sur40_probe+0x1a8/0x1580 drivers/input/touchscreen/sur40.c:675
 usb_probe_interface+0x303/0x8f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
page last free pid 6003 tgid 6003 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x79f/0x1090 mm/page_alloc.c:2950
 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:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4584 [inline]
 slab_alloc_node mm/slub.c:4917 [inline]
 kmem_cache_alloc_noprof+0x26b/0x6a0 mm/slub.c:4931
 alloc_filename fs/namei.c:147 [inline]
 do_getname+0x35/0x390 fs/namei.c:187
 class_filename_flags_constructor include/linux/fs.h:2566 [inline]
 do_sys_openat2+0xc7/0x1e0 fs/open.c:1367
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1385
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888026ad5f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888026ad5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888026ad6000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff888026ad6080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888026ad6100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in sur40_init drivers/input/touchscreen/sur40.c:352 [inline]
BUG: KASAN: slab-use-after-free in sur40_open+0x46c/0x500 drivers/input/touchscreen/sur40.c:397
Read of size 8 at addr ffff888026ad6000 by task udevd/5622

CPU: 0 UID: 0 PID: 5622 Comm: udevd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
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
 sur40_init drivers/input/touchscreen/sur40.c:352 [inline]
 sur40_open+0x46c/0x500 drivers/input/touchscreen/sur40.c:397
 input_open_device+0x24c/0x3d0 drivers/input/input.c:601
 evdev_open_device drivers/input/evdev.c:391 [inline]
 evdev_open+0x52f/0x690 drivers/input/evdev.c:478
 chrdev_open+0x234/0x6a0 fs/char_dev.c:411
 do_dentry_open+0x6ab/0x14d0 fs/open.c:947
 vfs_open+0x82/0x3f0 fs/open.c:1052
 do_open fs/namei.c:4700 [inline]
 path_openat+0x2873/0x4280 fs/namei.c:4863
 do_file_open+0x20e/0x430 fs/namei.c:4892
 do_sys_openat2+0x10f/0x1e0 fs/open.c:1368
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1385
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f84a69c8407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffe67d24590 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f84a639b880 RCX: 00007f84a69c8407
RDX: 0000000000080000 RSI: 000055652cf46fe0 RDI: ffffffffffffff9c
RBP: 000055652cf55be0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00005564f5c170c8
R13: 00005564f5c170ce R14: 00007ffe67d24b90 R15: 00005564f5c1dbcc
 </TASK>

Allocated by task 5943:
 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+0x2e5/0x6c0 mm/slub.c:5489
 _kmalloc_noprof include/linux/slab.h:988 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 sur40_probe+0x1a8/0x1580 drivers/input/touchscreen/sur40.c:675
 usb_probe_interface+0x303/0x8f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 usb_set_configuration+0xd97/0x1c60 drivers/usb/core/message.c:2268
 usb_generic_driver_probe+0xa1/0xe0 drivers/usb/core/generic.c:250
 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 usb_new_device.cold+0x685/0x115c drivers/usb/core/hub.c:2695
 hub_port_connect drivers/usb/core/hub.c:5567 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x30a3/0x4a60 drivers/usb/core/hub.c:5953
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Freed by task 5943:
 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:2677 [inline]
 slab_free mm/slub.c:6377 [inline]
 kfree+0x22b/0x6c0 mm/slub.c:6692
 sur40_probe+0xc36/0x1580 drivers/input/touchscreen/sur40.c:816
 usb_probe_interface+0x303/0x8f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 usb_set_configuration+0xd97/0x1c60 drivers/usb/core/message.c:2268
 usb_generic_driver_probe+0xa1/0xe0 drivers/usb/core/generic.c:250
 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 usb_new_device.cold+0x685/0x115c drivers/usb/core/hub.c:2695
 hub_port_connect drivers/usb/core/hub.c:5567 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
 port_event drivers/usb/core/hub.c:5871 [inline]
 hub_event+0x30a3/0x4a60 drivers/usb/core/hub.c:5953
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff888026ad6000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 0 bytes inside of
 freed 4096-byte region [ffff888026ad6000, ffff888026ad7000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x26ad0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88813fe28140 dead000000000122 0000000000000000
raw: 0000000000000000 0000000800040004 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88813fe28140 dead000000000122 0000000000000000
head: 0000000000000000 0000000800040004 00000000f5000000 0000000000000000
head: 00fff00000000003 fffffffffffffe01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5943, tgid 5943 (kworker/0:8), ts 90851228495, free_ts 87377699421
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0xf48/0x3530 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x299/0x2dc0 mm/page_alloc.c:5304
 alloc_slab_page mm/slub.c:3266 [inline]
 allocate_slab mm/slub.c:3380 [inline]
 new_slab+0xa2/0x640 mm/slub.c:3426
 refill_objects+0xe3/0x410 mm/slub.c:7310
 refill_sheaf mm/slub.c:2804 [inline]
 __pcs_replace_empty_main+0x376/0x680 mm/slub.c:4675
 alloc_from_pcs mm/slub.c:4773 [inline]
 slab_alloc_node mm/slub.c:4905 [inline]
 __kmalloc_cache_noprof+0x479/0x6c0 mm/slub.c:5485
 _kmalloc_noprof include/linux/slab.h:988 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 sur40_probe+0x1a8/0x1580 drivers/input/touchscreen/sur40.c:675
 usb_probe_interface+0x303/0x8f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:628 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:706
 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
page last free pid 6003 tgid 6003 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x79f/0x1090 mm/page_alloc.c:2950
 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:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4584 [inline]
 slab_alloc_node mm/slub.c:4917 [inline]
 kmem_cache_alloc_noprof+0x26b/0x6a0 mm/slub.c:4931
 alloc_filename fs/namei.c:147 [inline]
 do_getname+0x35/0x390 fs/namei.c:187
 class_filename_flags_constructor include/linux/fs.h:2566 [inline]
 do_sys_openat2+0xc7/0x1e0 fs/open.c:1367
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __x64_sys_openat+0x12d/0x210 fs/open.c:1385
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888026ad5f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888026ad5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888026ad6000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff888026ad6080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888026ad6100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================