Extracting prog: 3m17.992430177s
Minimizing prog: 3m33.508097771s
Simplifying prog options: 0s
Extracting C: 1m26.406227488s
Simplifying C: 22m30.499308303s


extracting reproducer from 30 programs
testing a last program of every proc
single: executing 5 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_clone-ptrace-ptrace
detailed listing:
executing program 0:
r0 = syz_clone(0xa0000280, 0x0, 0x0, 0x0, 0x0, 0x0)
ptrace(0x10, r0)
ptrace(0x4208, r0)

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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet
detailed listing:
executing program 0:
syz_emit_ethernet(0x86, &(0x7f0000000000)={@multicast, @empty, @void, {@ipv4={0x800, @udp={{0x5, 0x4, 0x0, 0x0, 0x78, 0x0, 0x0, 0x0, 0x11, 0x0, @empty, @empty}, {0x0, 0x1b59, 0x64, 0x0, @wg=@response={0x2, 0x0, 0xe0, "000000013904030401010000000000010000e0efffffffff00", "9384bbeb3018ad591b661fe808b21b77", {"694c875dfb1be5d2a0057a62022a1564", "a329d3a13bd5b6cc6a9471314a1d8c69"}}}}}}}, 0x0)

program crashed: WARNING in rt_set_nexthop
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=45.781293667s, {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_emit_ethernet
detailed listing:
executing program 0:
syz_emit_ethernet(0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=45.781293667s, {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_emit_ethernet
program crashed: WARNING in rt_set_nexthop
simplifying C reproducer
testing compiled C program (duration=45.781293667s, {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}}): syz_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {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}}): syz_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet
program did not crash
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false 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}}): syz_emit_ethernet
program did not crash
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false 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}}): syz_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false 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_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false 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_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false 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_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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:true UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing compiled C program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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}}): syz_emit_ethernet
program crashed: WARNING in rt_set_nexthop
testing program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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}}): syz_emit_ethernet
detailed listing:
executing program 0:
syz_emit_ethernet(0x86, &(0x7f0000000000)={@multicast, @empty, @void, {@ipv4={0x800, @udp={{0x5, 0x4, 0x0, 0x0, 0x78, 0x0, 0x0, 0x0, 0x11, 0x0, @empty, @empty}, {0x0, 0x1b59, 0x64, 0x0, @wg=@response={0x2, 0x0, 0xe0, "000000013904030401010000000000010000e0efffffffff00", "9384bbeb3018ad591b661fe808b21b77", {"694c875dfb1be5d2a0057a62022a1564", "a329d3a13bd5b6cc6a9471314a1d8c69"}}}}}}}, 0x0)

program crashed: WARNING in rt_set_nexthop
validation run: crashed=true
testing program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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}}): syz_emit_ethernet
detailed listing:
executing program 0:
syz_emit_ethernet(0x86, &(0x7f0000000000)={@multicast, @empty, @void, {@ipv4={0x800, @udp={{0x5, 0x4, 0x0, 0x0, 0x78, 0x0, 0x0, 0x0, 0x11, 0x0, @empty, @empty}, {0x0, 0x1b59, 0x64, 0x0, @wg=@response={0x2, 0x0, 0xe0, "000000013904030401010000000000010000e0efffffffff00", "9384bbeb3018ad591b661fe808b21b77", {"694c875dfb1be5d2a0057a62022a1564", "a329d3a13bd5b6cc6a9471314a1d8c69"}}}}}}}, 0x0)

program crashed: WARNING in rt_set_nexthop
validation run: crashed=true
testing program (duration=45.781293667s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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}}): syz_emit_ethernet
detailed listing:
executing program 0:
syz_emit_ethernet(0x86, &(0x7f0000000000)={@multicast, @empty, @void, {@ipv4={0x800, @udp={{0x5, 0x4, 0x0, 0x0, 0x78, 0x0, 0x0, 0x0, 0x11, 0x0, @empty, @empty}, {0x0, 0x1b59, 0x64, 0x0, @wg=@response={0x2, 0x0, 0xe0, "000000013904030401010000000000010000e0efffffffff00", "9384bbeb3018ad591b661fe808b21b77", {"694c875dfb1be5d2a0057a62022a1564", "a329d3a13bd5b6cc6a9471314a1d8c69"}}}}}}}, 0x0)

program crashed: WARNING in rt_set_nexthop
validation run: crashed=true
reproducing took 36m39.350968871s
repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5942 at kernel/softirq.c:387 __local_bh_enable_ip+0x180/0x1c0 kernel/softirq.c:387
Modules linked in:
CPU: 1 UID: 0 PID: 5942 Comm: krxrpcio/7001 Not tainted 6.16.0-rc5-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__local_bh_enable_ip+0x180/0x1c0 kernel/softirq.c:387
Code: 48 3b 44 24 48 75 57 48 8d 65 e0 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc cc 90 0f 0b 90 e9 f9 fe ff ff e8 53 00 00 00 eb 9f 90 <0f> 0b 90 e9 24 ff ff ff 48 c7 c1 30 ed a0 8f 80 e1 07 80 c1 03 38
RSP: 0018:ffffc9000414f4c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000201 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff89d750a3
RBP: ffffc9000414f548 R08: ffff8880b873bd83 R09: 1ffff110170e77b0
R10: dffffc0000000000 R11: ffffed10170e77b1 R12: ffff8880b873bd80
R13: ffff88803349cd70 R14: dffffc0000000000 R15: 1ffff92000829e98
FS:  0000000000000000(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555593538808 CR3: 0000000035448000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 rt_add_uncached_list net/ipv4/route.c:1526 [inline]
 rt_set_nexthop+0x693/0xa80 net/ipv4/route.c:-1
 __mkroute_output net/ipv4/route.c:2669 [inline]
 ip_route_output_key_hash_rcu+0x18f6/0x23a0 net/ipv4/route.c:2864
 ip_route_output_key_hash+0x1b9/0x2e0 net/ipv4/route.c:2694
 __ip_route_output_key include/net/route.h:169 [inline]
 ip_route_output_flow+0x2a/0x150 net/ipv4/route.c:2921
 ip_route_output_ports include/net/route.h:213 [inline]
 rxrpc_assess_MTU_size net/rxrpc/peer_object.c:174 [inline]
 rxrpc_init_peer+0x50a/0xc60 net/rxrpc/peer_object.c:281
 rxrpc_new_incoming_peer+0x281/0x5a0 net/rxrpc/peer_object.c:325
 rxrpc_alloc_incoming_call net/rxrpc/call_accept.c:284 [inline]
 rxrpc_new_incoming_call+0x612/0x14f0 net/rxrpc/call_accept.c:377
 rxrpc_input_packet net/rxrpc/io_thread.c:310 [inline]
 rxrpc_io_thread+0x18b2/0x2cd0 net/rxrpc/io_thread.c:482
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5942 at kernel/softirq.c:387 __local_bh_enable_ip+0x180/0x1c0 kernel/softirq.c:387
Modules linked in:
CPU: 1 UID: 0 PID: 5942 Comm: krxrpcio/7001 Not tainted 6.16.0-rc5-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__local_bh_enable_ip+0x180/0x1c0 kernel/softirq.c:387
Code: 48 3b 44 24 48 75 57 48 8d 65 e0 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc cc 90 0f 0b 90 e9 f9 fe ff ff e8 53 00 00 00 eb 9f 90 <0f> 0b 90 e9 24 ff ff ff 48 c7 c1 30 ed a0 8f 80 e1 07 80 c1 03 38
RSP: 0018:ffffc9000414f4c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000201 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff89d750a3
RBP: ffffc9000414f548 R08: ffff8880b873bd83 R09: 1ffff110170e77b0
R10: dffffc0000000000 R11: ffffed10170e77b1 R12: ffff8880b873bd80
R13: ffff88803349cd70 R14: dffffc0000000000 R15: 1ffff92000829e98
FS:  0000000000000000(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555593538808 CR3: 0000000035448000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 rt_add_uncached_list net/ipv4/route.c:1526 [inline]
 rt_set_nexthop+0x693/0xa80 net/ipv4/route.c:-1
 __mkroute_output net/ipv4/route.c:2669 [inline]
 ip_route_output_key_hash_rcu+0x18f6/0x23a0 net/ipv4/route.c:2864
 ip_route_output_key_hash+0x1b9/0x2e0 net/ipv4/route.c:2694
 __ip_route_output_key include/net/route.h:169 [inline]
 ip_route_output_flow+0x2a/0x150 net/ipv4/route.c:2921
 ip_route_output_ports include/net/route.h:213 [inline]
 rxrpc_assess_MTU_size net/rxrpc/peer_object.c:174 [inline]
 rxrpc_init_peer+0x50a/0xc60 net/rxrpc/peer_object.c:281
 rxrpc_new_incoming_peer+0x281/0x5a0 net/rxrpc/peer_object.c:325
 rxrpc_alloc_incoming_call net/rxrpc/call_accept.c:284 [inline]
 rxrpc_new_incoming_call+0x612/0x14f0 net/rxrpc/call_accept.c:377
 rxrpc_input_packet net/rxrpc/io_thread.c:310 [inline]
 rxrpc_io_thread+0x18b2/0x2cd0 net/rxrpc/io_thread.c:482
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>