Extracting prog: 4m29.685135348s
Minimizing prog: 19m41.379362115s
Simplifying prog options: 0s
Extracting C: 35.231493544s
Simplifying C: 10m48.267690993s


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}}): mq_open-mq_open
detailed listing:
executing program 0:
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)

program did not crash
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}}): mq_open-mq_open
detailed listing:
executing program 0:
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)

program crashed: WARNING in fast_dput
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}}): mq_open
detailed listing:
executing program 0:
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)

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}}): mq_open-mq_open
detailed listing:
executing program 0:
mq_open(0x0, 0x6c9f928deea10f50, 0x30, 0x0)
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)

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}}): mq_open-mq_open
detailed listing:
executing program 0:
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)
mq_open(0x0, 0x6c9f928deea10f50, 0x30, 0x0)

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}}): mq_open-mq_open
program crashed: WARNING in fast_dput
simplifying 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}}): mq_open-mq_open
program crashed: WARNING in fast_dput
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}}): mq_open-mq_open
program crashed: WARNING in fast_dput
testing compiled C program (duration=6m0s, {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}}): mq_open-mq_open
program crashed: WARNING in fast_dput
testing compiled C program (duration=6m0s, {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}}): mq_open-mq_open
program crashed: WARNING in fast_dput
testing compiled C program (duration=6m0s, {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}}): mq_open-mq_open
program crashed: WARNING in fast_dput
testing compiled C program (duration=6m0s, {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}}): mq_open-mq_open
program crashed: WARNING in fast_dput
testing compiled C program (duration=6m0s, {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}}): mq_open-mq_open
program crashed: WARNING in fast_dput
testing program (duration=6m0s, {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}}): mq_open-mq_open
detailed listing:
executing program 0:
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)

program crashed: WARNING in fast_dput
validation run: crashed=true
testing program (duration=6m0s, {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}}): mq_open-mq_open
detailed listing:
executing program 0:
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)

program crashed: WARNING in fast_dput
validation run: crashed=true
testing program (duration=6m0s, {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}}): mq_open-mq_open
detailed listing:
executing program 0:
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)
mq_open(&(0x7f0000000840)='batadv_slave_1\x00\x89/>\x88W\xd4gw\x11\xd5>H\x91\x05,\xf1\x91\"\a\xbb\xb9M\x87\"}\xe04\xc5\xeew\vy\x06\x1d\xd2\xd0\xce\xcd1g\xe4oX\xbc\xbai\xbcK8\x1a\xca\xdaG\xbfx\x99+\x1c\x94\xe1\xdf|\x93q\xa3\xc7\'w\xf2\x00\xacx\x00E\a\x01', 0x6c9f928deea10f50, 0x30, 0x0)

program crashed: WARNING in fast_dput
validation run: crashed=true
reproducing took 39m30.38453868s
repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: fs/dcache.c:829 at fast_dput+0x334/0x430 fs/dcache.c:829, CPU#1: syz.0.17/6021
Modules linked in:
CPU: 1 UID: 0 PID: 6021 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:fast_dput+0x334/0x430 fs/dcache.c:829
Code: e3 81 ff 48 b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 0f 85 e2 00 00 00 41 80 0e 40 e9 fd fe ff ff e8 4d e3 81 ff 90 <0f> 0b 90 e9 ef fe ff ff 44 89 e6 81 e6 00 00 04 00 31 ff e8 74 e7
RSP: 0018:ffffc900033b7cd8 EFLAGS: 00010293
RAX: ffffffff82400fe3 RBX: ffff88805d5d6810 RCX: ffff8880261e8000
RDX: 0000000000000000 RSI: 00000000ffffff80 RDI: 0000000000000001
RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000676f8c R12: dffffc0000000000
R13: 1ffff1100babad0a R14: ffff88805d5d6758 R15: ffff88805d5d6850
FS:  0000555572b86500(0000) GS:ffff888125b03000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fa63fff CR3: 000000007c99c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dput+0xe8/0x1a0 fs/dcache.c:924
 __fput+0x68e/0xa70 fs/file_table.c:476
 task_work_run+0x1d4/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
 exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2e3/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb7af8f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffe1ad5078 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000001b212 RCX: 00007fdb7af8f749
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000001 R09: 00000002e1ad536f
R10: 0000001b2ee20000 R11: 0000000000000246 R12: 00007fdb7b1e5fac
R13: 00007fdb7b1e5fa0 R14: ffffffffffffffff R15: 0000000000000004
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: fs/dcache.c:829 at fast_dput+0x334/0x430 fs/dcache.c:829, CPU#1: syz.0.17/6021
Modules linked in:
CPU: 1 UID: 0 PID: 6021 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:fast_dput+0x334/0x430 fs/dcache.c:829
Code: e3 81 ff 48 b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 0f 85 e2 00 00 00 41 80 0e 40 e9 fd fe ff ff e8 4d e3 81 ff 90 <0f> 0b 90 e9 ef fe ff ff 44 89 e6 81 e6 00 00 04 00 31 ff e8 74 e7
RSP: 0018:ffffc900033b7cd8 EFLAGS: 00010293
RAX: ffffffff82400fe3 RBX: ffff88805d5d6810 RCX: ffff8880261e8000
RDX: 0000000000000000 RSI: 00000000ffffff80 RDI: 0000000000000001
RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000676f8c R12: dffffc0000000000
R13: 1ffff1100babad0a R14: ffff88805d5d6758 R15: ffff88805d5d6850
FS:  0000555572b86500(0000) GS:ffff888125b03000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fa63fff CR3: 000000007c99c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dput+0xe8/0x1a0 fs/dcache.c:924
 __fput+0x68e/0xa70 fs/file_table.c:476
 task_work_run+0x1d4/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
 exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2e3/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb7af8f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffe1ad5078 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000001b212 RCX: 00007fdb7af8f749
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000001 R09: 00000002e1ad536f
R10: 0000001b2ee20000 R11: 0000000000000246 R12: 00007fdb7b1e5fac
R13: 00007fdb7b1e5fa0 R14: ffffffffffffffff R15: 0000000000000004
 </TASK>