Extracting prog: 3m6.93505703s
Minimizing prog: 24m35.701144414s
Simplifying prog options: 0s
Extracting C: 3m3.865874284s
Simplifying C: 12m47.517269238s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs: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_init_net_socket$x25-ioctl-bind$x25-connect$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
ioctl(r0, 0x890b, &(0x7f0000000140)='\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00lapb0\x00\x00\x00\x00\x00\x00\x00')
bind$x25(r0, &(0x7f0000000080), 0x12)
connect$x25(r0, &(0x7f0000000100)={0x9, @remote={'\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc', 0x0}}, 0x12)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs: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_init_net_socket$x25-ioctl-bind$x25-connect$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
ioctl(r0, 0x890b, &(0x7f0000000140)='\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00lapb0\x00\x00\x00\x00\x00\x00\x00')
bind$x25(r0, &(0x7f0000000080), 0x12)
connect$x25(r0, &(0x7f0000000100)={0x9, @remote={'\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc', 0x0}}, 0x12)

program crashed: inconsistent lock state in x25_kill_by_neigh
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=2m51.072084272s, {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_init_net_socket$x25-ioctl-bind$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
ioctl(r0, 0x890b, &(0x7f0000000140)='\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00lapb0\x00\x00\x00\x00\x00\x00\x00')
bind$x25(r0, &(0x7f0000000080), 0x12)

program did not crash
testing program (duration=2m51.072084272s, {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_init_net_socket$x25-ioctl-connect$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
ioctl(r0, 0x890b, &(0x7f0000000140)='\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00lapb0\x00\x00\x00\x00\x00\x00\x00')
connect$x25(r0, &(0x7f0000000100)={0x9, @remote={'\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc', 0x0}}, 0x12)

program did not crash
testing program (duration=2m51.072084272s, {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_init_net_socket$x25-bind$x25-connect$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
bind$x25(r0, &(0x7f0000000080), 0x12)
connect$x25(r0, &(0x7f0000000100)={0x9, @remote={'\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc', 0x0}}, 0x12)

program did not crash
testing program (duration=2m51.072084272s, {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}}): ioctl-bind$x25-connect$x25
detailed listing:
executing program 0:
ioctl(0xffffffffffffffff, 0x890b, &(0x7f0000000140)='\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00lapb0\x00\x00\x00\x00\x00\x00\x00')
bind$x25(0xffffffffffffffff, &(0x7f0000000080), 0x12)
connect$x25(0xffffffffffffffff, &(0x7f0000000100)={0x9, @remote={'\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc', 0x0}}, 0x12)

program did not crash
testing program (duration=2m51.072084272s, {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_init_net_socket$x25-ioctl-bind$x25-connect$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
ioctl(r0, 0x890b, 0x0)
bind$x25(r0, &(0x7f0000000080), 0x12)
connect$x25(r0, &(0x7f0000000100)={0x9, @remote={'\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc', 0x0}}, 0x12)

program did not crash
testing program (duration=2m51.072084272s, {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_init_net_socket$x25-ioctl-bind$x25-connect$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
ioctl(r0, 0x890b, &(0x7f0000000140))
bind$x25(r0, &(0x7f0000000080), 0x12)
connect$x25(r0, &(0x7f0000000100)={0x9, @remote={'\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc', 0x0}}, 0x12)

program did not crash
testing program (duration=2m51.072084272s, {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_init_net_socket$x25-ioctl-bind$x25-connect$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
ioctl(r0, 0x890b, &(0x7f0000000140)='\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00lapb0\x00\x00\x00\x00\x00\x00\x00')
bind$x25(r0, 0x0, 0x0)
connect$x25(r0, &(0x7f0000000100)={0x9, @remote={'\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc', 0x0}}, 0x12)

program did not crash
testing program (duration=2m51.072084272s, {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_init_net_socket$x25-ioctl-bind$x25-connect$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
ioctl(r0, 0x890b, &(0x7f0000000140)='\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00lapb0\x00\x00\x00\x00\x00\x00\x00')
bind$x25(r0, &(0x7f0000000080), 0x12)
connect$x25(r0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=2m51.072084272s, {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_init_net_socket$x25-ioctl-bind$x25-connect$x25
program crashed: inconsistent lock state in x25_kill_by_neigh
simplifying C reproducer
testing compiled C program (duration=2m51.072084272s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$x25-ioctl-bind$x25-connect$x25
program crashed: inconsistent lock state in x25_kill_by_neigh
testing compiled C program (duration=2m51.072084272s, {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_init_net_socket$x25-ioctl-bind$x25-connect$x25
program crashed: inconsistent lock state in x25_kill_by_neigh
testing compiled C program (duration=2m51.072084272s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$x25-ioctl-bind$x25-connect$x25
program crashed: inconsistent lock state in x25_kill_by_neigh
testing compiled C program (duration=2m51.072084272s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$x25-ioctl-bind$x25-connect$x25
program crashed: inconsistent lock state in x25_kill_by_neigh
testing compiled C program (duration=2m51.072084272s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$x25-ioctl-bind$x25-connect$x25
program crashed: inconsistent lock state in x25_kill_by_neigh
testing compiled C program (duration=2m51.072084272s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$x25-ioctl-bind$x25-connect$x25
program crashed: inconsistent lock state in x25_kill_by_neigh
testing compiled C program (duration=2m51.072084272s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$x25-ioctl-bind$x25-connect$x25
program crashed: inconsistent lock state in x25_kill_by_neigh
testing program (duration=2m51.072084272s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$x25-ioctl-bind$x25-connect$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
ioctl(r0, 0x890b, &(0x7f0000000140)='\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00lapb0\x00\x00\x00\x00\x00\x00\x00')
bind$x25(r0, &(0x7f0000000080), 0x12)
connect$x25(r0, &(0x7f0000000100)={0x9, @remote={'\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc', 0x0}}, 0x12)

program crashed: inconsistent lock state in x25_kill_by_neigh
validation run: crashed=true
testing program (duration=2m51.072084272s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$x25-ioctl-bind$x25-connect$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
ioctl(r0, 0x890b, &(0x7f0000000140)='\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00lapb0\x00\x00\x00\x00\x00\x00\x00')
bind$x25(r0, &(0x7f0000000080), 0x12)
connect$x25(r0, &(0x7f0000000100)={0x9, @remote={'\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc', 0x0}}, 0x12)

program crashed: inconsistent lock state in x25_kill_by_neigh
validation run: crashed=true
testing program (duration=2m51.072084272s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$x25-ioctl-bind$x25-connect$x25
detailed listing:
executing program 0:
r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
ioctl(r0, 0x890b, &(0x7f0000000140)='\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00lapb0\x00\x00\x00\x00\x00\x00\x00')
bind$x25(r0, &(0x7f0000000080), 0x12)
connect$x25(r0, &(0x7f0000000100)={0x9, @remote={'\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc', 0x0}}, 0x12)

program crashed: inconsistent lock state in x25_kill_by_neigh
validation run: crashed=true
reproducing took 47m56.440716021s
repro crashed as (corrupted=false):
================================
WARNING: inconsistent lock state
syzkaller #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
ffff0000dafe0260 (sk_lock-AF_X25){+.?.}-{0:0}, at: lock_sock include/net/sock.h:1713 [inline]
ffff0000dafe0260 (sk_lock-AF_X25){+.?.}-{0:0}, at: x25_kill_by_neigh+0x114/0x2a0 net/x25/af_x25.c:1778
{SOFTIRQ-ON-W} state was registered at:
  lock_acquire+0x150/0x370 kernel/locking/lockdep.c:5908
  lock_sock_nested+0x58/0x110 net/core/sock.c:3827
  lock_sock include/net/sock.h:1713 [inline]
  x25_bind+0x22c/0x34c net/x25/af_x25.c:694
  __sys_bind_socket net/socket.c:1945 [inline]
  __sys_bind+0x1c4/0x268 net/socket.c:1976
  __do_sys_bind net/socket.c:1981 [inline]
  __se_sys_bind net/socket.c:1979 [inline]
  __arm64_sys_bind+0x84/0x9c net/socket.c:1979
  __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
  invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
  el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
  do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
  el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
  el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
  el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
irq event stamp: 732130
hardirqs last  enabled at (732130): [<ffff800080310284>] __local_bh_enable_ip+0x1ec/0x35c kernel/softirq.c:478
hardirqs last disabled at (732129): [<ffff800080310204>] __local_bh_enable_ip+0x16c/0x35c kernel/softirq.c:455
softirqs last  enabled at (731940): [<ffff800080311114>] softirq_handle_end kernel/softirq.c:491 [inline]
softirqs last  enabled at (731940): [<ffff800080311114>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:673
softirqs last disabled at (732033): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:679

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(sk_lock-AF_X25);
  <Interrupt>
    lock(sk_lock-AF_X25);

 *** DEADLOCK ***

locks held by swapper/1/0: 1, last CPU#1:
 #0: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: netif_receive_skb_core+0x38/0x190 net/core/dev.c:6288

stack backtrace:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_usage_bug+0x310/0x384 kernel/locking/lockdep.c:4058
 valid_state kernel/locking/lockdep.c:4072 [inline]
 mark_lock_irq+0x4a0/0x4a8 kernel/locking/lockdep.c:-1
 mark_lock+0x144/0x1a4 kernel/locking/lockdep.c:4769
 mark_usage kernel/locking/lockdep.c:-1 [inline]
 __lock_acquire+0x5e0/0x2a6c kernel/locking/lockdep.c:5208
 lock_acquire+0x150/0x370 kernel/locking/lockdep.c:5908
 lock_sock_nested+0x58/0x110 net/core/sock.c:3827
 lock_sock include/net/sock.h:1713 [inline]
 x25_kill_by_neigh+0x114/0x2a0 net/x25/af_x25.c:1778
 x25_link_terminated+0x60/0x7c net/x25/x25_link.c:257
 x25_lapb_receive_frame+0x144/0xcf8 net/x25/x25_dev.c:138
 __netif_receive_skb_one_core+0xc8/0x110 net/core/dev.c:6264
 netif_receive_skb_core+0xd8/0x190 net/core/dev.c:6289
 lapbeth_napi_poll+0x48/0xa0 drivers/net/wan/lapbether.c:100
 __napi_poll+0xb4/0x328 net/core/dev.c:7787
 napi_poll net/core/dev.c:7850 [inline]
 net_rx_action+0x5b0/0xc14 net/core/dev.c:8007
 handle_softirqs+0x2ec/0xd98 kernel/softirq.c:645
 __do_softirq+0x14/0x20 kernel/softirq.c:679
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:885
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
 invoke_softirq kernel/softirq.c:526 [inline]
 __irq_exit_rcu+0x1c0/0x458 kernel/softirq.c:767
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:784
 __el1_irq arch/arm64/kernel/entry-common.c:531 [inline]
 el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:543
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:548
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:586
 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P)
 arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P)
 default_idle_call+0xd0/0xfc kernel/sched/idle.c:129 (P)
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x1ec/0x450 kernel/sched/idle.c:355
 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:454
 secondary_start_kernel+0x1bc/0x1e0 arch/arm64/kernel/smp.c:273
 __secondary_switched+0xc0/0xc4 arch/arm64/kernel/head.S:401
BUG: sleeping function called from invalid context at net/core/sock.c:3829
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 0, name: swapper/1
preempt_count: 101, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<ffff800081bd3754>] stack_depot_save_flags+0x1ec/0x6d8 lib/stackdepot.c:698
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 __might_resched+0x354/0x4c0 kernel/sched/core.c:9234
 __might_sleep+0x84/0xdc kernel/sched/core.c:9163
 lock_sock_nested+0x68/0x110 net/core/sock.c:3829
 lock_sock include/net/sock.h:1713 [inline]
 x25_kill_by_neigh+0x114/0x2a0 net/x25/af_x25.c:1778
 x25_link_terminated+0x60/0x7c net/x25/x25_link.c:257
 x25_lapb_receive_frame+0x144/0xcf8 net/x25/x25_dev.c:138
 __netif_receive_skb_one_core+0xc8/0x110 net/core/dev.c:6264
 netif_receive_skb_core+0xd8/0x190 net/core/dev.c:6289
 lapbeth_napi_poll+0x48/0xa0 drivers/net/wan/lapbether.c:100
 __napi_poll+0xb4/0x328 net/core/dev.c:7787
 napi_poll net/core/dev.c:7850 [inline]
 net_rx_action+0x5b0/0xc14 net/core/dev.c:8007
 handle_softirqs+0x2ec/0xd98 kernel/softirq.c:645
 __do_softirq+0x14/0x20 kernel/softirq.c:679
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:885
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
 invoke_softirq kernel/softirq.c:526 [inline]
 __irq_exit_rcu+0x1c0/0x458 kernel/softirq.c:767
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:784
 __el1_irq arch/arm64/kernel/entry-common.c:531 [inline]
 el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:543
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:548
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:586
 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P)
 arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P)
 default_idle_call+0xd0/0xfc kernel/sched/idle.c:129 (P)
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x1ec/0x450 kernel/sched/idle.c:355
 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:454
 secondary_start_kernel+0x1bc/0x1e0 arch/arm64/kernel/smp.c:273
 __secondary_switched+0xc0/0xc4 arch/arm64/kernel/head.S:401

final repro crashed as (corrupted=false):
================================
WARNING: inconsistent lock state
syzkaller #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
ffff0000dafe0260 (sk_lock-AF_X25){+.?.}-{0:0}, at: lock_sock include/net/sock.h:1713 [inline]
ffff0000dafe0260 (sk_lock-AF_X25){+.?.}-{0:0}, at: x25_kill_by_neigh+0x114/0x2a0 net/x25/af_x25.c:1778
{SOFTIRQ-ON-W} state was registered at:
  lock_acquire+0x150/0x370 kernel/locking/lockdep.c:5908
  lock_sock_nested+0x58/0x110 net/core/sock.c:3827
  lock_sock include/net/sock.h:1713 [inline]
  x25_bind+0x22c/0x34c net/x25/af_x25.c:694
  __sys_bind_socket net/socket.c:1945 [inline]
  __sys_bind+0x1c4/0x268 net/socket.c:1976
  __do_sys_bind net/socket.c:1981 [inline]
  __se_sys_bind net/socket.c:1979 [inline]
  __arm64_sys_bind+0x84/0x9c net/socket.c:1979
  __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
  invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
  el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
  do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
  el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
  el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
  el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
irq event stamp: 732130
hardirqs last  enabled at (732130): [<ffff800080310284>] __local_bh_enable_ip+0x1ec/0x35c kernel/softirq.c:478
hardirqs last disabled at (732129): [<ffff800080310204>] __local_bh_enable_ip+0x16c/0x35c kernel/softirq.c:455
softirqs last  enabled at (731940): [<ffff800080311114>] softirq_handle_end kernel/softirq.c:491 [inline]
softirqs last  enabled at (731940): [<ffff800080311114>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:673
softirqs last disabled at (732033): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:679

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(sk_lock-AF_X25);
  <Interrupt>
    lock(sk_lock-AF_X25);

 *** DEADLOCK ***

locks held by swapper/1/0: 1, last CPU#1:
 #0: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffff800088de2060 (rcu_read_lock){....}-{1:3}, at: netif_receive_skb_core+0x38/0x190 net/core/dev.c:6288

stack backtrace:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_usage_bug+0x310/0x384 kernel/locking/lockdep.c:4058
 valid_state kernel/locking/lockdep.c:4072 [inline]
 mark_lock_irq+0x4a0/0x4a8 kernel/locking/lockdep.c:-1
 mark_lock+0x144/0x1a4 kernel/locking/lockdep.c:4769
 mark_usage kernel/locking/lockdep.c:-1 [inline]
 __lock_acquire+0x5e0/0x2a6c kernel/locking/lockdep.c:5208
 lock_acquire+0x150/0x370 kernel/locking/lockdep.c:5908
 lock_sock_nested+0x58/0x110 net/core/sock.c:3827
 lock_sock include/net/sock.h:1713 [inline]
 x25_kill_by_neigh+0x114/0x2a0 net/x25/af_x25.c:1778
 x25_link_terminated+0x60/0x7c net/x25/x25_link.c:257
 x25_lapb_receive_frame+0x144/0xcf8 net/x25/x25_dev.c:138
 __netif_receive_skb_one_core+0xc8/0x110 net/core/dev.c:6264
 netif_receive_skb_core+0xd8/0x190 net/core/dev.c:6289
 lapbeth_napi_poll+0x48/0xa0 drivers/net/wan/lapbether.c:100
 __napi_poll+0xb4/0x328 net/core/dev.c:7787
 napi_poll net/core/dev.c:7850 [inline]
 net_rx_action+0x5b0/0xc14 net/core/dev.c:8007
 handle_softirqs+0x2ec/0xd98 kernel/softirq.c:645
 __do_softirq+0x14/0x20 kernel/softirq.c:679
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:885
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
 invoke_softirq kernel/softirq.c:526 [inline]
 __irq_exit_rcu+0x1c0/0x458 kernel/softirq.c:767
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:784
 __el1_irq arch/arm64/kernel/entry-common.c:531 [inline]
 el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:543
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:548
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:586
 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P)
 arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P)
 default_idle_call+0xd0/0xfc kernel/sched/idle.c:129 (P)
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x1ec/0x450 kernel/sched/idle.c:355
 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:454
 secondary_start_kernel+0x1bc/0x1e0 arch/arm64/kernel/smp.c:273
 __secondary_switched+0xc0/0xc4 arch/arm64/kernel/head.S:401
BUG: sleeping function called from invalid context at net/core/sock.c:3829
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 0, name: swapper/1
preempt_count: 101, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<ffff800081bd3754>] stack_depot_save_flags+0x1ec/0x6d8 lib/stackdepot.c:698
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 __might_resched+0x354/0x4c0 kernel/sched/core.c:9234
 __might_sleep+0x84/0xdc kernel/sched/core.c:9163
 lock_sock_nested+0x68/0x110 net/core/sock.c:3829
 lock_sock include/net/sock.h:1713 [inline]
 x25_kill_by_neigh+0x114/0x2a0 net/x25/af_x25.c:1778
 x25_link_terminated+0x60/0x7c net/x25/x25_link.c:257
 x25_lapb_receive_frame+0x144/0xcf8 net/x25/x25_dev.c:138
 __netif_receive_skb_one_core+0xc8/0x110 net/core/dev.c:6264
 netif_receive_skb_core+0xd8/0x190 net/core/dev.c:6289
 lapbeth_napi_poll+0x48/0xa0 drivers/net/wan/lapbether.c:100
 __napi_poll+0xb4/0x328 net/core/dev.c:7787
 napi_poll net/core/dev.c:7850 [inline]
 net_rx_action+0x5b0/0xc14 net/core/dev.c:8007
 handle_softirqs+0x2ec/0xd98 kernel/softirq.c:645
 __do_softirq+0x14/0x20 kernel/softirq.c:679
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:885
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
 invoke_softirq kernel/softirq.c:526 [inline]
 __irq_exit_rcu+0x1c0/0x458 kernel/softirq.c:767
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:784
 __el1_irq arch/arm64/kernel/entry-common.c:531 [inline]
 el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:543
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:548
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:586
 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P)
 arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P)
 default_idle_call+0xd0/0xfc kernel/sched/idle.c:129 (P)
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x1ec/0x450 kernel/sched/idle.c:355
 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:454
 secondary_start_kernel+0x1bc/0x1e0 arch/arm64/kernel/smp.c:273
 __secondary_switched+0xc0/0xc4 arch/arm64/kernel/head.S:401