rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 ticks this GP) idle=b254/1/0x4000000000000000 softirq=45899/45899 fqs=5
rcu: (detected by 0, t=10503 jiffies, g=44833, q=160 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12356 Comm: syz.1.1769 Not tainted 6.13.0-rc3-syzkaller-00224-gbaa172c77ac5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lock_acquire+0x9e/0x550 kernel/locking/lockdep.c:5817
Code: ec 03 48 b8 f1 f1 f1 f1 00 f2 f2 f2 4b 89 04 2c 43 c7 44 2c 09 f2 f2 f2 00 43 c7 44 2c 11 f3 f3 f3 f3 66 43 c7 44 2c 15 f3 f3 <43> c6 44 2c 17 f3 0f 1f 44 00 00 65 8b 05 ec 25 89 7e 83 f8 08 0f
RSP: 0018:ffffc90000a18a20 EFLAGS: 00000802
RAX: f2f2f200f1f1f1f1 RBX: 1ffff92000143174 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9a571200
RBP: ffffc90000a18b68 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90000a18c60 R11: fffff5200014318e R12: 1ffff9200014314c
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
FS: 00007fe42dc7d6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c36893d CR3: 0000000031c24000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
debug_object_deactivate+0x158/0x390 lib/debugobjects.c:873
debug_hrtimer_deactivate kernel/time/hrtimer.c:433 [inline]
debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:475
__run_hrtimer kernel/time/hrtimer.c:1707 [inline]
__hrtimer_run_queues+0x305/0xd30 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x996/0xeb0
Code: 48 21 c3 0f 85 16 02 00 00 e8 f6 ad 20 00 4c 8b 7c 24 10 4d 85 f6 75 07 e8 e7 ad 20 00 eb 06 e8 e0 ad 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 30 42 80 3c 28 00 74 08 48 89 df e8 96 83 84 00 4c 8b
RSP: 0018:ffffc9000c74e660 EFLAGS: 00000287
RAX: ffffffff817ec5c0 RBX: ffffffff8f162c98 RCX: 0000000000080000
RDX: ffffc9000bc91000 RSI: 0000000000003cf4 RDI: 0000000000003cf5
RBP: ffffc9000c74e810 R08: ffffffff817ec597 R09: 1ffffffff284e110
R10: dffffc0000000000 R11: fffffbfff284e111 R12: ffffffff8f162c40
R13: dffffc0000000000 R14: 0000000000000200 R15: ffffc9000c74e860
__console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3309
vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2432
_printk+0xd5/0x120 kernel/printk/printk.c:2457
tcp_syn_flood_action+0x26e/0x320
tcp_conn_request+0x627/0x34c0 net/ipv4/tcp_input.c:7208
tcp_rcv_state_process+0x187e/0x44e0 net/ipv4/tcp_input.c:6757
tcp_v6_do_rcv+0x8f0/0x13e0 net/ipv6/tcp_ipv6.c:1667
tcp_v6_rcv+0x220a/0x2fb0 net/ipv6/tcp_ipv6.c:1904
ip6_protocol_deliver_rcu+0xc79/0x1580 net/ipv6/ip6_input.c:436
ip6_input_finish+0x187/0x2d0 net/ipv6/ip6_input.c:481
NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
__netif_receive_skb_one_core net/core/dev.c:5672 [inline]
__netif_receive_skb+0x1ea/0x650 net/core/dev.c:5785
netif_receive_skb_internal net/core/dev.c:5871 [inline]
netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930
tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550
tun_get_user+0x30cc/0x48a0 drivers/net/tun.c:2007
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0xaeb/0xd30 fs/read_write.c:679
ksys_write+0x18f/0x2b0 fs/read_write.c:731
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe42cd847df
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007fe42dc7d000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe42cf75fa0 RCX: 00007fe42cd847df
RDX: 0000000000000096 RSI: 00000000200001c0 RDI: 00000000000000c8
RBP: 00007fe42ce01aa8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000096 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe42cf75fa0 R15: 00007ffe96116988
rcu: rcu_preempt kthread starved for 10465 jiffies! g44833 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:25880 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 12330 Comm: syz.3.1762 Not tainted 6.13.0-rc3-syzkaller-00224-gbaa172c77ac5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x19f3/0x2c60 kernel/smp.c:884
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 56 e9 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 01 e5 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 e5 e4
RSP: 0018:ffffc9001bbe7460 EFLAGS: 00000293
RAX: ffffffff81938ebb RBX: 1ffff110170e88b9 RCX: ffff8880260b0000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9001bbe7660 R08: ffffffff81938e8a R09: 1ffffffff284e110
R10: dffffc0000000000 R11: fffffbfff284e111 R12: dffffc0000000000
R13: ffff8880b87445c8 R14: ffff8880b863f940 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020032000 CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2114 [inline]
text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2324
text_poke_flush arch/x86/kernel/alternative.c:2515 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2522
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked+0xd2/0x1c0 kernel/jump_label.c:240
static_key_disable+0x1a/0x20 kernel/jump_label.c:248
tracepoint_remove_func kernel/tracepoint.c:370 [inline]
tracepoint_probe_unregister+0x83c/0xa10 kernel/tracepoint.c:504
bpf_raw_tp_link_release+0x45/0x70 kernel/bpf/syscall.c:3610
bpf_link_free+0xfd/0x3a0 kernel/bpf/syscall.c:3132
bpf_link_put_direct kernel/bpf/syscall.c:3175 [inline]
bpf_link_release+0x78/0x90 kernel/bpf/syscall.c:3182
__fput+0x23c/0xa50 fs/file_table.c:450
task_work_run+0x24f/0x310 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xa2a/0x28e0 kernel/exit.c:938
do_group_exit+0x207/0x2c0 kernel/exit.c:1087
get_signal+0x16b2/0x1750 kernel/signal.c:3017
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f19a3985d29
Code: Unable to access opcode bytes at 0x7f19a3985cff.
RSP: 002b:00007f19a47fa0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f19a3b76088 RCX: 00007f19a3985d29
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f19a3b76088
RBP: 00007f19a3b76080 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f19a3b7608c
R13: 0000000000000000 R14: 00007fffa6046f20 R15: 00007fffa6047008
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.3.1762:12330]
Modules linked in:
irq event stamp: 249278
hardirqs last enabled at (249277): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357
hardirqs last disabled at (249278): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049
softirqs last enabled at (249276): [] __do_softirq kernel/softirq.c:595 [inline]
softirqs last enabled at (249276): [] invoke_softirq kernel/softirq.c:435 [inline]
softirqs last enabled at (249276): [] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
softirqs last disabled at (249249): [] __do_softirq kernel/softirq.c:595 [inline]
softirqs last disabled at (249249): [] invoke_softirq kernel/softirq.c:435 [inline]
softirqs last disabled at (249249): [] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
CPU: 0 UID: 0 PID: 12330 Comm: syz.3.1762 Not tainted 6.13.0-rc3-syzkaller-00224-gbaa172c77ac5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x19f8/0x2c60 kernel/smp.c:884
Code: 89 e6 83 e6 01 31 ff e8 56 e9 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 01 e5 0b 00 eb 38 f3 90 42 0f b6 04 23 <84> c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 e5 e4 0b 00 eb e4 44
RSP: 0018:ffffc9001bbe7460 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 1ffff110170e88b9 RCX: ffff8880260b0000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9001bbe7660 R08: ffffffff81938e8a R09: 1ffffffff284e110
R10: dffffc0000000000 R11: fffffbfff284e111 R12: dffffc0000000000
R13: ffff8880b87445c8 R14: ffff8880b863f940 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020032000 CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2114 [inline]
text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2324
text_poke_flush arch/x86/kernel/alternative.c:2515 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2522
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked+0xd2/0x1c0 kernel/jump_label.c:240
static_key_disable+0x1a/0x20 kernel/jump_label.c:248
tracepoint_remove_func kernel/tracepoint.c:370 [inline]
tracepoint_probe_unregister+0x83c/0xa10 kernel/tracepoint.c:504
bpf_raw_tp_link_release+0x45/0x70 kernel/bpf/syscall.c:3610
bpf_link_free+0xfd/0x3a0 kernel/bpf/syscall.c:3132
bpf_link_put_direct kernel/bpf/syscall.c:3175 [inline]
bpf_link_release+0x78/0x90 kernel/bpf/syscall.c:3182
__fput+0x23c/0xa50 fs/file_table.c:450
task_work_run+0x24f/0x310 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xa2a/0x28e0 kernel/exit.c:938
do_group_exit+0x207/0x2c0 kernel/exit.c:1087
get_signal+0x16b2/0x1750 kernel/signal.c:3017
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f19a3985d29
Code: Unable to access opcode bytes at 0x7f19a3985cff.
RSP: 002b:00007f19a47fa0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f19a3b76088 RCX: 00007f19a3985d29
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f19a3b76088
RBP: 00007f19a3b76080 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f19a3b7608c
R13: 0000000000000000 R14: 00007fffa6046f20 R15: 00007fffa6047008
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12356 Comm: syz.1.1769 Not tainted 6.13.0-rc3-syzkaller-00224-gbaa172c77ac5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:validate_chain+0x5d7/0x5920 kernel/locking/lockdep.c:3916
Code: 01 00 00 00 48 c7 84 24 00 01 00 00 0e 36 e0 45 49 c7 04 0c 00 00 00 00 49 c7 44 0c 09 00 00 00 00 49 c7 44 0c 11 00 00 00 00 <49> c7 44 0c 1f 00 00 00 00 49 c7 44 0c 2b 00 00 00 00 41 c6 44 0c
RSP: 0018:ffffc90000a18700 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 00000000000a4021 RCX: 1ffff92000143100
RDX: 0000000000000001 RSI: ffff88802835a9d0 RDI: ffff888028359e00
RBP: ffffc90000a18a00 R08: ffffffff94270887 R09: 1ffffffff284e110
R10: dffffc0000000000 R11: fffffbfff284e111 R12: dffffc0000000000
R13: ffff88802835a9f0 R14: 58cce5e7c8d5ebdc R15: 0000000000000001
FS: 00007fe42dc7d6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c36893d CR3: 0000000031c24000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
advance_sched+0xa1e/0xca0 net/sched/sch_taprio.c:985
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x996/0xeb0
Code: 48 21 c3 0f 85 16 02 00 00 e8 f6 ad 20 00 4c 8b 7c 24 10 4d 85 f6 75 07 e8 e7 ad 20 00 eb 06 e8 e0 ad 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 30 42 80 3c 28 00 74 08 48 89 df e8 96 83 84 00 4c 8b
RSP: 0018:ffffc9000c74e660 EFLAGS: 00000287
RAX: ffffffff817ec5c0 RBX: ffffffff8f162c98 RCX: 0000000000080000
RDX: ffffc9000bc91000 RSI: 0000000000003cf4 RDI: 0000000000003cf5
RBP: ffffc9000c74e810 R08: ffffffff817ec597 R09: 1ffffffff284e110
R10: dffffc0000000000 R11: fffffbfff284e111 R12: ffffffff8f162c40
R13: dffffc0000000000 R14: 0000000000000200 R15: ffffc9000c74e860
__console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3309
vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2432
_printk+0xd5/0x120 kernel/printk/printk.c:2457
tcp_syn_flood_action+0x26e/0x320
tcp_conn_request+0x627/0x34c0 net/ipv4/tcp_input.c:7208
tcp_rcv_state_process+0x187e/0x44e0 net/ipv4/tcp_input.c:6757
tcp_v6_do_rcv+0x8f0/0x13e0 net/ipv6/tcp_ipv6.c:1667
tcp_v6_rcv+0x220a/0x2fb0 net/ipv6/tcp_ipv6.c:1904
ip6_protocol_deliver_rcu+0xc79/0x1580 net/ipv6/ip6_input.c:436
ip6_input_finish+0x187/0x2d0 net/ipv6/ip6_input.c:481
NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
__netif_receive_skb_one_core net/core/dev.c:5672 [inline]
__netif_receive_skb+0x1ea/0x650 net/core/dev.c:5785
netif_receive_skb_internal net/core/dev.c:5871 [inline]
netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930
tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550
tun_get_user+0x30cc/0x48a0 drivers/net/tun.c:2007
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0xaeb/0xd30 fs/read_write.c:679
ksys_write+0x18f/0x2b0 fs/read_write.c:731
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe42cd847df
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007fe42dc7d000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe42cf75fa0 RCX: 00007fe42cd847df
RDX: 0000000000000096 RSI: 00000000200001c0 RDI: 00000000000000c8
RBP: 00007fe42ce01aa8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000096 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe42cf75fa0 R15: 00007ffe96116988