Extracting prog: 1m28.99918736s
Minimizing prog: 36m54.999401216s
Simplifying prog options: 0s
Extracting C: 1m34.742856763s
Simplifying C: 13m23.77542637s


extracting reproducer from 27 programs
first checking the prog from the crash report
single: executing 1 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_sco-sendmsg$kcm-syz_init_net_socket$ax25-bind$ax25-recvmmsg-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-ioctl$sock_netrom_SIOCADDRT-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r1 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
bind$ax25(r1, &(0x7f0000000100)={{0x3, @default, 0x1}, [@null, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bcast, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x3}, @default, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @null]}, 0x48)
recvmmsg(r1, &(0x7f0000001040)=[{{0x0, 0x0, 0x0}, 0x6}], 0x1, 0x22, 0x0)
r2 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r2, 0x8914, &(0x7f0000000000))
ioctl$sock_netrom_SIOCADDRT(0xffffffffffffffff, 0x890b, &(0x7f0000000000)={0x0, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bpq0, 0x1, 'syz1\x00', @default, 0x1, 0x0, [@null, @default, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x3}, @default, @default]})
setsockopt$ax25_SO_BINDTODEVICE(r1, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)
ioctl$sock_netdev_private(r0, 0x8914, &(0x7f0000000000))

program crashed: possible deadlock in ax25_device_event
single: successfully extracted reproducer
found reproducer with 11 syscalls
minimizing guilty program
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_sco-sendmsg$kcm-syz_init_net_socket$ax25-bind$ax25-recvmmsg-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-ioctl$sock_netrom_SIOCADDRT-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
bind$ax25(r0, &(0x7f0000000100)={{0x3, @default, 0x1}, [@null, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bcast, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x3}, @default, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @null]}, 0x48)
recvmmsg(r0, &(0x7f0000001040)=[{{0x0, 0x0, 0x0}, 0x6}], 0x1, 0x22, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
ioctl$sock_netrom_SIOCADDRT(0xffffffffffffffff, 0x890b, &(0x7f0000000000)={0x0, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bpq0, 0x1, 'syz1\x00', @default, 0x1, 0x0, [@null, @default, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x3}, @default, @default]})
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program crashed: KASAN: use-after-free Read in ax25_release
program crashed: KASAN: use-after-free Read in ax25_fillin_cb
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_sco-sendmsg$kcm-syz_init_net_socket$ax25-bind$ax25-recvmmsg-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-ioctl$sock_netrom_SIOCADDRT
detailed listing:
executing program 0:
syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
bind$ax25(r0, &(0x7f0000000100)={{0x3, @default, 0x1}, [@null, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bcast, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x3}, @default, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @null]}, 0x48)
recvmmsg(r0, &(0x7f0000001040)=[{{0x0, 0x0, 0x0}, 0x6}], 0x1, 0x22, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
ioctl$sock_netrom_SIOCADDRT(0xffffffffffffffff, 0x890b, &(0x7f0000000000)={0x0, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bpq0, 0x1, 'syz1\x00', @default, 0x1, 0x0, [@null, @default, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @bcast, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x3}, @default, @default]})

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_sco-sendmsg$kcm-syz_init_net_socket$ax25-bind$ax25-recvmmsg-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
bind$ax25(r0, &(0x7f0000000100)={{0x3, @default, 0x1}, [@null, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bcast, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x3}, @default, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @null]}, 0x48)
recvmmsg(r0, &(0x7f0000001040)=[{{0x0, 0x0, 0x0}, 0x6}], 0x1, 0x22, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program crashed: KASAN: use-after-free Read in ax25_fillin_cb
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_sco-sendmsg$kcm-syz_init_net_socket$ax25-bind$ax25-recvmmsg-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
bind$ax25(r0, &(0x7f0000000100)={{0x3, @default, 0x1}, [@null, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bcast, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x3}, @default, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @null]}, 0x48)
recvmmsg(r0, &(0x7f0000001040)=[{{0x0, 0x0, 0x0}, 0x6}], 0x1, 0x22, 0x0)
syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_sco-sendmsg$kcm-syz_init_net_socket$ax25-bind$ax25-recvmmsg-syz_init_net_socket$bt_sco-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
bind$ax25(r0, &(0x7f0000000100)={{0x3, @default, 0x1}, [@null, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bcast, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x3}, @default, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @null]}, 0x48)
recvmmsg(r0, &(0x7f0000001040)=[{{0x0, 0x0, 0x0}, 0x6}], 0x1, 0x22, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_sco-sendmsg$kcm-syz_init_net_socket$ax25-bind$ax25-recvmmsg-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
bind$ax25(r0, &(0x7f0000000100)={{0x3, @default, 0x1}, [@null, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bcast, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x3}, @default, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @null]}, 0x48)
recvmmsg(r0, &(0x7f0000001040)=[{{0x0, 0x0, 0x0}, 0x6}], 0x1, 0x22, 0x0)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(0xffffffffffffffff, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_sco-sendmsg$kcm-syz_init_net_socket$ax25-bind$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
bind$ax25(r0, &(0x7f0000000100)={{0x3, @default, 0x1}, [@null, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bcast, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x3}, @default, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @null]}, 0x48)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program crashed: KASAN: use-after-free Read in ax25_fillin_cb
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_sco-sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program crashed: KASAN: use-after-free Read in ax25_fillin_cb
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_sco-sendmsg$kcm-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r0, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_sco-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program crashed: KASAN: use-after-free Read in ax25_fillin_cb
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
sendmsg$kcm(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, 0x0}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{0x0}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, 0x0, 0x0)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, 0x0)
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0xe5a01e6e238456fc)

program did not crash
testing program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
detailed listing:
executing program 0:
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f903", 0x11}], 0x1}, 0x0)
r0 = syz_init_net_socket$ax25(0x3, 0x2, 0x0)
r1 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2)
setsockopt$ax25_SO_BINDTODEVICE(0xffffffffffffffff, 0x101, 0x19, &(0x7f0000000000)=@bpq0, 0x10)
ioctl$sock_netdev_private(r1, 0x8914, &(0x7f0000000000))
setsockopt$ax25_SO_BINDTODEVICE(r0, 0x101, 0x19, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
program crashed: KASAN: use-after-free Read in ax25_fillin_cb
simplifying C reproducer
testing compiled C program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
program crashed: KASAN: use-after-free Read in ax25_fillin_cb
testing compiled C program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
program did not crash
testing compiled C program (duration=46.723559581s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
program crashed: KASAN: use-after-free Read in ax25_fillin_cb
testing compiled C program (duration=46.723559581s, {Threaded:false Repeat:true 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
program crashed: KASAN: use-after-free Read in ax25_fillin_cb
testing compiled C program (duration=46.723559581s, {Threaded:false Repeat:true 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
program crashed: KASAN: use-after-free Read in ax25_fillin_cb
testing compiled C program (duration=46.723559581s, {Threaded:false Repeat:true 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
program crashed: KASAN: use-after-free Read in ax25_fillin_cb
testing compiled C program (duration=46.723559581s, {Threaded:false Repeat:true 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
program crashed: KASAN: use-after-free Read in ax25_fillin_cb
testing compiled C program (duration=46.723559581s, {Threaded:false Repeat:true 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$kcm-syz_init_net_socket$ax25-syz_init_net_socket$bt_sco-setsockopt$ax25_SO_BINDTODEVICE-ioctl$sock_netdev_private-setsockopt$ax25_SO_BINDTODEVICE
program crashed: KASAN: use-after-free Read in ax25_fillin_cb
reproducing took 53m22.516903599s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in ax25_fillin_cb_from_dev net/ax25/af_ax25.c:468 [inline]
BUG: KASAN: use-after-free in ax25_fillin_cb+0x459/0x640 net/ax25/af_ax25.c:495
Read of size 4 at addr ffff88802a2fcd38 by task syz-executor412/4169

CPU: 1 PID: 4169 Comm: syz-executor412 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 print_address_description+0x60/0x2d0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xdf/0x130 mm/kasan/report.c:451
 ax25_fillin_cb_from_dev net/ax25/af_ax25.c:468 [inline]
 ax25_fillin_cb+0x459/0x640 net/ax25/af_ax25.c:495
 ax25_setsockopt+0x8a2/0xa40 net/ax25/af_ax25.c:690
 __sys_setsockopt+0x3d6/0x5e0 net/socket.c:2203
 __do_sys_setsockopt net/socket.c:2214 [inline]
 __se_sys_setsockopt net/socket.c:2211 [inline]
 __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2211
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f32a233db39
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd7ae7d1d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f32a233db39
RDX: 0000000000000019 RSI: 0000000000000101 RDI: 0000000000000003
RBP: 0000000000010f51 R08: e5a01e6e238456fc R09: 0000000000000006
R10: 0000200000000000 R11: 0000000000000246 R12: 00007ffd7ae7d1ec
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Allocated by task 4167:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_kmalloc+0xb5/0xf0 mm/kasan/common.c:522
 kmalloc include/linux/slab.h:604 [inline]
 kzalloc include/linux/slab.h:735 [inline]
 ax25_dev_device_up+0x50/0x580 net/ax25/ax25_dev.c:55
 ax25_device_event+0x483/0x4f0 net/ax25/af_ax25.c:139
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:391
 call_netdevice_notifiers_extack net/core/dev.c:2061 [inline]
 call_netdevice_notifiers net/core/dev.c:2075 [inline]
 __dev_notify_flags+0x178/0x2d0 net/core/dev.c:-1
 dev_change_flags+0xe3/0x1a0 net/core/dev.c:8929
 dev_ifsioc+0x147/0xe70 net/core/dev_ioctl.c:324
 dev_ioctl+0x55f/0xe50 net/core/dev_ioctl.c:587
 sock_do_ioctl+0x222/0x2f0 net/socket.c:1154
 sock_ioctl+0x4ed/0x6e0 net/socket.c:1257
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Freed by task 4168:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1705 [inline]
 slab_free_freelist_hook+0xea/0x170 mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kfree+0xef/0x2a0 mm/slub.c:4559
 ax25_dev_put include/net/ax25.h:302 [inline]
 ax25_release+0x661/0x870 net/ax25/af_ax25.c:1062
 __sock_release net/socket.c:649 [inline]
 sock_close+0xd5/0x240 net/socket.c:1336
 __fput+0x234/0x930 fs/file_table.c:311
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0x616/0x20a0 kernel/exit.c:874
 do_group_exit+0x12e/0x300 kernel/exit.c:996
 __do_sys_exit_group kernel/exit.c:1007 [inline]
 __se_sys_exit_group kernel/exit.c:1005 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Last potentially related work creation:
 kasan_save_stack+0x35/0x60 mm/kasan/common.c:38
 kasan_record_aux_stack+0xb8/0x100 mm/kasan/generic.c:348
 insert_work+0x54/0x3d0 kernel/workqueue.c:1366
 __queue_work+0x9c5/0xd50 kernel/workqueue.c:1532
 queue_work_on+0x11d/0x1d0 kernel/workqueue.c:1559
 queue_work include/linux/workqueue.h:512 [inline]
 call_usermodehelper_exec+0x26b/0x460 kernel/umh.c:435
 kobject_uevent_env+0x681/0x890 lib/kobject_uevent.c:633
 rx_queue_add_kobject net/core/net-sysfs.c:1070 [inline]
 net_rx_queue_update_kobjects+0x221/0x490 net/core/net-sysfs.c:1110
 register_queue_kobjects net/core/net-sysfs.c:1767 [inline]
 netdev_register_kobject+0x223/0x310 net/core/net-sysfs.c:2018
 register_netdevice+0x1019/0x16b0 net/core/dev.c:10397
 register_netdev+0x37/0x50 net/core/dev.c:10521
 nr_proto_init+0x164/0x7e0 net/netrom/af_netrom.c:1424
 do_one_initcall+0x1ee/0x680 init/main.c:1302
 do_initcall_level+0x137/0x1f0 init/main.c:1375
 do_initcalls+0x4b/0x90 init/main.c:1391
 kernel_init_freeable+0x3ce/0x560 init/main.c:1615
 kernel_init+0x19/0x1b0 init/main.c:1506
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

The buggy address belongs to the object at ffff88802a2fcd00
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 56 bytes inside of
 192-byte region [ffff88802a2fcd00, ffff88802a2fcdc0)
The buggy address belongs to the page:
page:ffffea0000a8bf00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2a2fc
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 ffffea0005316cc0 0000000700000007 ffff888016841a00
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 24525659718, free_ts 24493812714
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192
 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5474
 alloc_page_interleave+0x24/0x1e0 mm/mempolicy.c:2031
 alloc_slab_page mm/slub.c:1775 [inline]
 allocate_slab mm/slub.c:1912 [inline]
 new_slab+0xc0/0x4b0 mm/slub.c:1975
 ___slab_alloc+0x81e/0xdf0 mm/slub.c:3008
 __slab_alloc mm/slub.c:3095 [inline]
 slab_alloc_node mm/slub.c:3186 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 __kmalloc_track_caller+0x1cb/0x330 mm/slub.c:4925
 kmemdup+0x22/0x50 mm/util.c:128
 neigh_parms_alloc+0x86/0x4b0 net/core/neighbour.c:1630
 inetdev_init+0x127/0x4d0 net/ipv4/devinet.c:266
 inetdev_event+0x280/0x1360 net/ipv4/devinet.c:1544
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:391
 call_netdevice_notifiers_extack net/core/dev.c:2061 [inline]
 call_netdevice_notifiers net/core/dev.c:2075 [inline]
 register_netdevice+0x1275/0x16b0 net/core/dev.c:10428
 register_netdev+0x37/0x50 net/core/dev.c:10521
 nr_proto_init+0x164/0x7e0 net/netrom/af_netrom.c:1424
 do_one_initcall+0x1ee/0x680 init/main.c:1302
 do_initcall_level+0x137/0x1f0 init/main.c:1375
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x94/0x280 mm/page_alloc.c:3396
 mm_free_pgd kernel/fork.c:653 [inline]
 __mmdrop+0xaa/0x3e0 kernel/fork.c:704
 free_bprm+0x141/0x300 fs/exec.c:1494
 kernel_execve+0x380/0x900 fs/exec.c:2015
 call_usermodehelper_exec_async+0x207/0x350 kernel/umh.c:112
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

Memory state around the buggy address:
 ffff88802a2fcc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88802a2fcc80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802a2fcd00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff88802a2fcd80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff88802a2fce00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in ax25_fillin_cb_from_dev net/ax25/af_ax25.c:468 [inline]
BUG: KASAN: use-after-free in ax25_fillin_cb+0x459/0x640 net/ax25/af_ax25.c:495
Read of size 4 at addr ffff88802a2fcd38 by task syz-executor412/4169

CPU: 1 PID: 4169 Comm: syz-executor412 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 print_address_description+0x60/0x2d0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xdf/0x130 mm/kasan/report.c:451
 ax25_fillin_cb_from_dev net/ax25/af_ax25.c:468 [inline]
 ax25_fillin_cb+0x459/0x640 net/ax25/af_ax25.c:495
 ax25_setsockopt+0x8a2/0xa40 net/ax25/af_ax25.c:690
 __sys_setsockopt+0x3d6/0x5e0 net/socket.c:2203
 __do_sys_setsockopt net/socket.c:2214 [inline]
 __se_sys_setsockopt net/socket.c:2211 [inline]
 __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2211
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f32a233db39
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd7ae7d1d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f32a233db39
RDX: 0000000000000019 RSI: 0000000000000101 RDI: 0000000000000003
RBP: 0000000000010f51 R08: e5a01e6e238456fc R09: 0000000000000006
R10: 0000200000000000 R11: 0000000000000246 R12: 00007ffd7ae7d1ec
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Allocated by task 4167:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_kmalloc+0xb5/0xf0 mm/kasan/common.c:522
 kmalloc include/linux/slab.h:604 [inline]
 kzalloc include/linux/slab.h:735 [inline]
 ax25_dev_device_up+0x50/0x580 net/ax25/ax25_dev.c:55
 ax25_device_event+0x483/0x4f0 net/ax25/af_ax25.c:139
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:391
 call_netdevice_notifiers_extack net/core/dev.c:2061 [inline]
 call_netdevice_notifiers net/core/dev.c:2075 [inline]
 __dev_notify_flags+0x178/0x2d0 net/core/dev.c:-1
 dev_change_flags+0xe3/0x1a0 net/core/dev.c:8929
 dev_ifsioc+0x147/0xe70 net/core/dev_ioctl.c:324
 dev_ioctl+0x55f/0xe50 net/core/dev_ioctl.c:587
 sock_do_ioctl+0x222/0x2f0 net/socket.c:1154
 sock_ioctl+0x4ed/0x6e0 net/socket.c:1257
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Freed by task 4168:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1705 [inline]
 slab_free_freelist_hook+0xea/0x170 mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kfree+0xef/0x2a0 mm/slub.c:4559
 ax25_dev_put include/net/ax25.h:302 [inline]
 ax25_release+0x661/0x870 net/ax25/af_ax25.c:1062
 __sock_release net/socket.c:649 [inline]
 sock_close+0xd5/0x240 net/socket.c:1336
 __fput+0x234/0x930 fs/file_table.c:311
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0x616/0x20a0 kernel/exit.c:874
 do_group_exit+0x12e/0x300 kernel/exit.c:996
 __do_sys_exit_group kernel/exit.c:1007 [inline]
 __se_sys_exit_group kernel/exit.c:1005 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Last potentially related work creation:
 kasan_save_stack+0x35/0x60 mm/kasan/common.c:38
 kasan_record_aux_stack+0xb8/0x100 mm/kasan/generic.c:348
 insert_work+0x54/0x3d0 kernel/workqueue.c:1366
 __queue_work+0x9c5/0xd50 kernel/workqueue.c:1532
 queue_work_on+0x11d/0x1d0 kernel/workqueue.c:1559
 queue_work include/linux/workqueue.h:512 [inline]
 call_usermodehelper_exec+0x26b/0x460 kernel/umh.c:435
 kobject_uevent_env+0x681/0x890 lib/kobject_uevent.c:633
 rx_queue_add_kobject net/core/net-sysfs.c:1070 [inline]
 net_rx_queue_update_kobjects+0x221/0x490 net/core/net-sysfs.c:1110
 register_queue_kobjects net/core/net-sysfs.c:1767 [inline]
 netdev_register_kobject+0x223/0x310 net/core/net-sysfs.c:2018
 register_netdevice+0x1019/0x16b0 net/core/dev.c:10397
 register_netdev+0x37/0x50 net/core/dev.c:10521
 nr_proto_init+0x164/0x7e0 net/netrom/af_netrom.c:1424
 do_one_initcall+0x1ee/0x680 init/main.c:1302
 do_initcall_level+0x137/0x1f0 init/main.c:1375
 do_initcalls+0x4b/0x90 init/main.c:1391
 kernel_init_freeable+0x3ce/0x560 init/main.c:1615
 kernel_init+0x19/0x1b0 init/main.c:1506
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

The buggy address belongs to the object at ffff88802a2fcd00
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 56 bytes inside of
 192-byte region [ffff88802a2fcd00, ffff88802a2fcdc0)
The buggy address belongs to the page:
page:ffffea0000a8bf00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2a2fc
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 ffffea0005316cc0 0000000700000007 ffff888016841a00
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 24525659718, free_ts 24493812714
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192
 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5474
 alloc_page_interleave+0x24/0x1e0 mm/mempolicy.c:2031
 alloc_slab_page mm/slub.c:1775 [inline]
 allocate_slab mm/slub.c:1912 [inline]
 new_slab+0xc0/0x4b0 mm/slub.c:1975
 ___slab_alloc+0x81e/0xdf0 mm/slub.c:3008
 __slab_alloc mm/slub.c:3095 [inline]
 slab_alloc_node mm/slub.c:3186 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 __kmalloc_track_caller+0x1cb/0x330 mm/slub.c:4925
 kmemdup+0x22/0x50 mm/util.c:128
 neigh_parms_alloc+0x86/0x4b0 net/core/neighbour.c:1630
 inetdev_init+0x127/0x4d0 net/ipv4/devinet.c:266
 inetdev_event+0x280/0x1360 net/ipv4/devinet.c:1544
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:391
 call_netdevice_notifiers_extack net/core/dev.c:2061 [inline]
 call_netdevice_notifiers net/core/dev.c:2075 [inline]
 register_netdevice+0x1275/0x16b0 net/core/dev.c:10428
 register_netdev+0x37/0x50 net/core/dev.c:10521
 nr_proto_init+0x164/0x7e0 net/netrom/af_netrom.c:1424
 do_one_initcall+0x1ee/0x680 init/main.c:1302
 do_initcall_level+0x137/0x1f0 init/main.c:1375
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x94/0x280 mm/page_alloc.c:3396
 mm_free_pgd kernel/fork.c:653 [inline]
 __mmdrop+0xaa/0x3e0 kernel/fork.c:704
 free_bprm+0x141/0x300 fs/exec.c:1494
 kernel_execve+0x380/0x900 fs/exec.c:2015
 call_usermodehelper_exec_async+0x207/0x350 kernel/umh.c:112
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

Memory state around the buggy address:
 ffff88802a2fcc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88802a2fcc80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802a2fcd00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff88802a2fcd80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff88802a2fce00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================