Extracting prog: 4m11.180843868s
Minimizing prog: 32m22.88759273s
Simplifying prog options: 14m13.810990165s
Extracting C: 6m11.685152641s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$key-sendmsg$key
detailed listing:
executing program 0:
r0 = socket$key(0xf, 0x3, 0x2)
sendmsg$key(r0, &(0x7f00000001c0)={0x40000000, 0x0, &(0x7f0000000040)={&(0x7f0000000100)=ANY=[@ANYBLOB="02030609100000000000004c9e0000000200130002eb0e00000000000000000105000600200000000a00000040010000000500e50000070000001f00001a000000030000a95a6e870200010000e9ff070040000200000000050005000000cc580a"], 0x80}}, 0x4000000)

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:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$key-sendmsg$key
detailed listing:
executing program 0:
r0 = socket$key(0xf, 0x3, 0x2)
sendmsg$key(r0, &(0x7f00000001c0)={0x40000000, 0x0, &(0x7f0000000040)={&(0x7f0000000100)=ANY=[@ANYBLOB="02030609100000000000004c9e0000000200130002eb0e00000000000000000105000600200000000a00000040010000000500e50000070000001f00001a000000030000a95a6e870200010000e9ff070040000200000000050005000000cc580a"], 0x80}}, 0x4000000)

program crashed: WARNING in xfrm6_tunnel_net_exit
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$key
detailed listing:
executing program 0:
socket$key(0xf, 0x3, 0x2)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$key
detailed listing:
executing program 0:
sendmsg$key(0xffffffffffffffff, &(0x7f00000001c0)={0x40000000, 0x0, &(0x7f0000000040)={&(0x7f0000000100)=ANY=[@ANYBLOB="02030609100000000000004c9e0000000200130002eb0e00000000000000000105000600200000000a00000040010000000500e50000070000001f00001a000000030000a95a6e870200010000e9ff070040000200000000050005000000cc580a"], 0x80}}, 0x4000000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$key-sendmsg$key
detailed listing:
executing program 0:
r0 = socket$key(0xf, 0x3, 0x2)
sendmsg$key(r0, 0x0, 0x4000000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$key-sendmsg$key
detailed listing:
executing program 0:
r0 = socket$key(0xf, 0x3, 0x2)
sendmsg$key(r0, &(0x7f00000001c0)={0x40000000, 0x0, 0x0}, 0x4000000)

program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$key-sendmsg$key
detailed listing:
executing program 0:
r0 = socket$key(0xf, 0x3, 0x2)
sendmsg$key(r0, &(0x7f00000001c0)={0x40000000, 0x0, &(0x7f0000000040)={0x0, 0x80}}, 0x4000000)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$key-sendmsg$key
detailed listing:
executing program 0:
r0 = socket$key(0xf, 0x3, 0x2)
sendmsg$key(r0, &(0x7f00000001c0)={0x40000000, 0x0, &(0x7f0000000040)={&(0x7f0000000100)=ANY=[@ANYBLOB], 0x80}}, 0x4000000)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$key-sendmsg$key
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$key-sendmsg$key
detailed listing:
executing program 0:
r0 = socket$key(0xf, 0x3, 0x2)
sendmsg$key(r0, &(0x7f00000001c0)={0x40000000, 0x0, &(0x7f0000000040)={&(0x7f0000000100)=ANY=[@ANYBLOB="02030609100000000000004c9e0000000200130002eb0e00000000000000000105000600200000000a00000040010000000500e50000070000001f00001a000000030000a95a6e870200010000e9ff070040000200000000050005000000cc580a"], 0x80}}, 0x4000000)

program crashed: WARNING in xfrm6_tunnel_net_exit
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$key-sendmsg$key
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=6m0s, {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}}): socket$key-sendmsg$key
detailed listing:
executing program 0:
r0 = socket$key(0xf, 0x3, 0x2)
sendmsg$key(r0, &(0x7f00000001c0)={0x40000000, 0x0, &(0x7f0000000040)={&(0x7f0000000100)=ANY=[@ANYBLOB="02030609100000000000004c9e0000000200130002eb0e00000000000000000105000600200000000a00000040010000000500e50000070000001f00001a000000030000a95a6e870200010000e9ff070040000200000000050005000000cc580a"], 0x80}}, 0x4000000)

program crashed: WARNING in xfrm6_tunnel_net_exit
extracting C reproducer
testing compiled C program (duration=6m0s, {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}}): socket$key-sendmsg$key
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=6m0s, {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}}): socket$key-sendmsg$key
detailed listing:
executing program 0:
r0 = socket$key(0xf, 0x3, 0x2)
sendmsg$key(r0, &(0x7f00000001c0)={0x40000000, 0x0, &(0x7f0000000040)={&(0x7f0000000100)=ANY=[@ANYBLOB="02030609100000000000004c9e0000000200130002eb0e00000000000000000105000600200000000a00000040010000000500e50000070000001f00001a000000030000a95a6e870200010000e9ff070040000200000000050005000000cc580a"], 0x80}}, 0x4000000)

program crashed: WARNING in xfrm6_tunnel_net_exit
validation run: crashed=true
testing program (duration=6m0s, {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}}): socket$key-sendmsg$key
detailed listing:
executing program 0:
r0 = socket$key(0xf, 0x3, 0x2)
sendmsg$key(r0, &(0x7f00000001c0)={0x40000000, 0x0, &(0x7f0000000040)={&(0x7f0000000100)=ANY=[@ANYBLOB="02030609100000000000004c9e0000000200130002eb0e00000000000000000105000600200000000a00000040010000000500e50000070000001f00001a000000030000a95a6e870200010000e9ff070040000200000000050005000000cc580a"], 0x80}}, 0x4000000)

program crashed: WARNING in xfrm6_tunnel_net_exit
validation run: crashed=true
testing program (duration=6m0s, {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}}): socket$key-sendmsg$key
detailed listing:
executing program 0:
r0 = socket$key(0xf, 0x3, 0x2)
sendmsg$key(r0, &(0x7f00000001c0)={0x40000000, 0x0, &(0x7f0000000040)={&(0x7f0000000100)=ANY=[@ANYBLOB="02030609100000000000004c9e0000000200130002eb0e00000000000000000105000600200000000a00000040010000000500e50000070000001f00001a000000030000a95a6e870200010000e9ff070040000200000000050005000000cc580a"], 0x80}}, 0x4000000)

program crashed: WARNING in xfrm6_tunnel_net_exit
validation run: crashed=true
reproducing took 1h0m29.341440008s
repro crashed as (corrupted=false):
veth0_vlan: left promiscuous mode
team0 (unregistering): Port device team_slave_1 removed
team0 (unregistering): Port device team_slave_0 removed
------------[ cut here ]------------
WARNING: net/ipv6/xfrm6_tunnel.c:341 at xfrm6_tunnel_net_exit+0x7e/0x100 net/ipv6/xfrm6_tunnel.c:341, CPU#1: kworker/u8:7/1145
Modules linked in:
CPU: 1 UID: 0 PID: 1145 Comm: kworker/u8:7 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: netns cleanup_net
RIP: 0010:xfrm6_tunnel_net_exit+0x7e/0x100 net/ipv6/xfrm6_tunnel.c:341
Code: c8 43 0d f8 4b 83 3c 2c 00 75 19 e8 ac 99 a7 f7 49 81 fd f8 07 00 00 74 1d e8 9e 99 a7 f7 49 83 c5 08 eb c9 e8 93 99 a7 f7 90 <0f> 0b 90 49 81 fd f8 07 00 00 75 e3 48 81 c3 00 08 00 00 45 31 f6
RSP: 0018:ffffc90003d0f890 EFLAGS: 00010293
RAX: ffffffff8a18e3fd RBX: ffff88805ab20000 RCX: ffff888027073c80
RDX: 0000000000000000 RSI: ffffffff8d847ac1 RDI: ffff88805ab20000
RBP: ffffc90003d0f990 R08: ffffffff8f9ed377 R09: 1ffffffff1f3da6e
R10: dffffc0000000000 R11: fffffbfff1f3da6f R12: ffff88805ab20000
R13: 0000000000000000 R14: ffff888075f24900 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125de4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005596aa0aa950 CR3: 0000000076a52000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ops_exit_list net/core/net_namespace.c:199 [inline]
 ops_undo_list+0x49a/0x990 net/core/net_namespace.c:252
 cleanup_net+0x4d8/0x820 net/core/net_namespace.c:696
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

final repro crashed as (corrupted=false):
veth0_vlan: left promiscuous mode
team0 (unregistering): Port device team_slave_1 removed
team0 (unregistering): Port device team_slave_0 removed
------------[ cut here ]------------
WARNING: net/ipv6/xfrm6_tunnel.c:341 at xfrm6_tunnel_net_exit+0x7e/0x100 net/ipv6/xfrm6_tunnel.c:341, CPU#1: kworker/u8:7/1145
Modules linked in:
CPU: 1 UID: 0 PID: 1145 Comm: kworker/u8:7 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: netns cleanup_net
RIP: 0010:xfrm6_tunnel_net_exit+0x7e/0x100 net/ipv6/xfrm6_tunnel.c:341
Code: c8 43 0d f8 4b 83 3c 2c 00 75 19 e8 ac 99 a7 f7 49 81 fd f8 07 00 00 74 1d e8 9e 99 a7 f7 49 83 c5 08 eb c9 e8 93 99 a7 f7 90 <0f> 0b 90 49 81 fd f8 07 00 00 75 e3 48 81 c3 00 08 00 00 45 31 f6
RSP: 0018:ffffc90003d0f890 EFLAGS: 00010293
RAX: ffffffff8a18e3fd RBX: ffff88805ab20000 RCX: ffff888027073c80
RDX: 0000000000000000 RSI: ffffffff8d847ac1 RDI: ffff88805ab20000
RBP: ffffc90003d0f990 R08: ffffffff8f9ed377 R09: 1ffffffff1f3da6e
R10: dffffc0000000000 R11: fffffbfff1f3da6f R12: ffff88805ab20000
R13: 0000000000000000 R14: ffff888075f24900 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125de4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005596aa0aa950 CR3: 0000000076a52000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ops_exit_list net/core/net_namespace.c:199 [inline]
 ops_undo_list+0x49a/0x990 net/core/net_namespace.c:252
 cleanup_net+0x4d8/0x820 net/core/net_namespace.c:696
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>