Extracting prog: 5m2.488828731s
Minimizing prog: 31m55.083178124s
Simplifying prog options: 14m49.09366569s
Extracting C: 6m29.845208038s
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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f00000004c0)=@newsa={0x104, 0x10, 0x7, 0x0, 0x0, {{@in6=@mcast2, @in=@multicast2, 0x4e20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0xee00}, {@in6=@mcast1, 0x0, 0x2b}, @in6=@private0={0xfc, 0x0, '\x00', 0xfd}, {0x0, 0x0, 0x2, 0x0, 0x10000000, 0xad}, {0x0, 0x200000, 0x7}, {0x40000, 0xfffffffd, 0xae8}, 0x0, 0x0, 0xa, 0x2, 0x0, 0x74}, [@coaddr={0x14, 0xe, @in6=@remote}]}, 0x104}}, 0x0)

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}}): socket$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f00000004c0)=@newsa={0x104, 0x10, 0x7, 0x0, 0x0, {{@in6=@mcast2, @in=@multicast2, 0x4e20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0xee00}, {@in6=@mcast1, 0x0, 0x2b}, @in6=@private0={0xfc, 0x0, '\x00', 0xfd}, {0x0, 0x0, 0x2, 0x0, 0x10000000, 0xad}, {0x0, 0x200000, 0x7}, {0x40000, 0xfffffffd, 0xae8}, 0x0, 0x0, 0xa, 0x2, 0x0, 0x74}, [@coaddr={0x14, 0xe, @in6=@remote}]}, 0x104}}, 0x0)

program crashed: WARNING in xfrm_state_fini
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
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}}): socket$nl_xfrm
detailed listing:
executing program 0:
socket$nl_xfrm(0x10, 0x3, 0x6)

program did not crash
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}}): sendmsg$nl_xfrm
detailed listing:
executing program 0:
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f00000004c0)=@newsa={0x104, 0x10, 0x7, 0x0, 0x0, {{@in6=@mcast2, @in=@multicast2, 0x4e20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0xee00}, {@in6=@mcast1, 0x0, 0x2b}, @in6=@private0={0xfc, 0x0, '\x00', 0xfd}, {0x0, 0x0, 0x2, 0x0, 0x10000000, 0xad}, {0x0, 0x200000, 0x7}, {0x40000, 0xfffffffd, 0xae8}, 0x0, 0x0, 0xa, 0x2, 0x0, 0x74}, [@coaddr={0x14, 0xe, @in6=@remote}]}, 0x104}}, 0x0)

program did not crash
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}}): socket$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)

program did not crash
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}}): socket$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, 0x0}, 0x0)

program did not crash
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}}): socket$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={0x0}}, 0x0)

program did not crash
extracting C reproducer
testing compiled C 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}}): socket$nl_xfrm-sendmsg$nl_xfrm
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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f00000004c0)=@newsa={0x104, 0x10, 0x7, 0x0, 0x0, {{@in6=@mcast2, @in=@multicast2, 0x4e20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0xee00}, {@in6=@mcast1, 0x0, 0x2b}, @in6=@private0={0xfc, 0x0, '\x00', 0xfd}, {0x0, 0x0, 0x2, 0x0, 0x10000000, 0xad}, {0x0, 0x200000, 0x7}, {0x40000, 0xfffffffd, 0xae8}, 0x0, 0x0, 0xa, 0x2, 0x0, 0x74}, [@coaddr={0x14, 0xe, @in6=@remote}]}, 0x104}}, 0x0)

program crashed: WARNING in xfrm_state_fini
extracting C reproducer
testing compiled C program (duration=6m0s, {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}}): socket$nl_xfrm-sendmsg$nl_xfrm
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$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f00000004c0)=@newsa={0x104, 0x10, 0x7, 0x0, 0x0, {{@in6=@mcast2, @in=@multicast2, 0x4e20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0xee00}, {@in6=@mcast1, 0x0, 0x2b}, @in6=@private0={0xfc, 0x0, '\x00', 0xfd}, {0x0, 0x0, 0x2, 0x0, 0x10000000, 0xad}, {0x0, 0x200000, 0x7}, {0x40000, 0xfffffffd, 0xae8}, 0x0, 0x0, 0xa, 0x2, 0x0, 0x74}, [@coaddr={0x14, 0xe, @in6=@remote}]}, 0x104}}, 0x0)

program crashed: WARNING in xfrm_state_fini
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$nl_xfrm-sendmsg$nl_xfrm
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$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f00000004c0)=@newsa={0x104, 0x10, 0x7, 0x0, 0x0, {{@in6=@mcast2, @in=@multicast2, 0x4e20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0xee00}, {@in6=@mcast1, 0x0, 0x2b}, @in6=@private0={0xfc, 0x0, '\x00', 0xfd}, {0x0, 0x0, 0x2, 0x0, 0x10000000, 0xad}, {0x0, 0x200000, 0x7}, {0x40000, 0xfffffffd, 0xae8}, 0x0, 0x0, 0xa, 0x2, 0x0, 0x74}, [@coaddr={0x14, 0xe, @in6=@remote}]}, 0x104}}, 0x0)

program crashed: WARNING in xfrm_state_fini
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$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f00000004c0)=@newsa={0x104, 0x10, 0x7, 0x0, 0x0, {{@in6=@mcast2, @in=@multicast2, 0x4e20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0xee00}, {@in6=@mcast1, 0x0, 0x2b}, @in6=@private0={0xfc, 0x0, '\x00', 0xfd}, {0x0, 0x0, 0x2, 0x0, 0x10000000, 0xad}, {0x0, 0x200000, 0x7}, {0x40000, 0xfffffffd, 0xae8}, 0x0, 0x0, 0xa, 0x2, 0x0, 0x74}, [@coaddr={0x14, 0xe, @in6=@remote}]}, 0x104}}, 0x0)

program crashed: WARNING in xfrm_state_fini
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$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f00000004c0)=@newsa={0x104, 0x10, 0x7, 0x0, 0x0, {{@in6=@mcast2, @in=@multicast2, 0x4e20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0xee00}, {@in6=@mcast1, 0x0, 0x2b}, @in6=@private0={0xfc, 0x0, '\x00', 0xfd}, {0x0, 0x0, 0x2, 0x0, 0x10000000, 0xad}, {0x0, 0x200000, 0x7}, {0x40000, 0xfffffffd, 0xae8}, 0x0, 0x0, 0xa, 0x2, 0x0, 0x74}, [@coaddr={0x14, 0xe, @in6=@remote}]}, 0x104}}, 0x0)

program crashed: WARNING in xfrm_state_fini
validation run: crashed=true
reproducing took 1h1m40.877013754s
repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1109 at net/xfrm/xfrm_state.c:3303 xfrm_state_fini+0x270/0x2f0 net/xfrm/xfrm_state.c:3303
Modules linked in:

CPU: 0 UID: 0 PID: 1109 Comm: kworker/u8:5 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: netns cleanup_net
RIP: 0010:xfrm_state_fini+0x270/0x2f0 net/xfrm/xfrm_state.c:3303
Code: c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 98 41 01 f8 48 8b 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 76 fe e1 f7 e8 51 d9 9d f7 90 <0f> 0b 90 e9 fd fd ff ff e8 43 d9 9d f7 90 0f 0b 90 e9 60 fe ff ff
RSP: 0000:ffffc900039cf898 EFLAGS: 00010293
RAX: ffffffff8a21d2ff RBX: ffff888033624880 RCX: ffff8880268d1e00
RDX: 0000000000000000 RSI: ffffffff8dba5b5c RDI: ffff8880268d1e00
RBP: ffffc900039cf9b0 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: ffffffff8f630a60
R13: 1ffff92000739f40 R14: ffff888033625d00 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f605abe12f8 CR3: 000000000df36000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 xfrm_net_exit+0x2d/0x70 net/xfrm/xfrm_policy.c:4348
 ops_exit_list net/core/net_namespace.c:198 [inline]
 ops_undo_list+0x497/0x990 net/core/net_namespace.c:251
 cleanup_net+0x4c5/0x800 net/core/net_namespace.c:682
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 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: 0 PID: 1109 at net/xfrm/xfrm_state.c:3303 xfrm_state_fini+0x270/0x2f0 net/xfrm/xfrm_state.c:3303
Modules linked in:

CPU: 0 UID: 0 PID: 1109 Comm: kworker/u8:5 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: netns cleanup_net
RIP: 0010:xfrm_state_fini+0x270/0x2f0 net/xfrm/xfrm_state.c:3303
Code: c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 98 41 01 f8 48 8b 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 76 fe e1 f7 e8 51 d9 9d f7 90 <0f> 0b 90 e9 fd fd ff ff e8 43 d9 9d f7 90 0f 0b 90 e9 60 fe ff ff
RSP: 0000:ffffc900039cf898 EFLAGS: 00010293
RAX: ffffffff8a21d2ff RBX: ffff888033624880 RCX: ffff8880268d1e00
RDX: 0000000000000000 RSI: ffffffff8dba5b5c RDI: ffff8880268d1e00
RBP: ffffc900039cf9b0 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: ffffffff8f630a60
R13: 1ffff92000739f40 R14: ffff888033625d00 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f605abe12f8 CR3: 000000000df36000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 xfrm_net_exit+0x2d/0x70 net/xfrm/xfrm_policy.c:4348
 ops_exit_list net/core/net_namespace.c:198 [inline]
 ops_undo_list+0x497/0x990 net/core/net_namespace.c:251
 cleanup_net+0x4c5/0x800 net/core/net_namespace.c:682
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>