RBP: 00007fb47274f1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcc9c5f83f R14: 00007fb47274f300 R15: 0000000000022000
======================================================
WARNING: possible circular locking dependency detected
5.10.45 #1 Not tainted
------------------------------------------------------
syz-executor.2/19435 is trying to acquire lock:
ffffffff84d0a6c0 (console_owner){-.-.}-{0:0}, at: console_trylock_spinning kernel/printk/printk.c:1831 [inline]
ffffffff84d0a6c0 (console_owner){-.-.}-{0:0}, at: vprintk_emit+0x2c6/0x4d0 kernel/printk/printk.c:2051

but task is already holding lock:
ffff888048aa2518 (&sighand->siglock){-...}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:379 [inline]
ffff888048aa2518 (&sighand->siglock){-...}-{2:2}, at: tty_signal_session_leader+0xfc/0x5b0 drivers/tty/tty_jobctrl.c:200

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&sighand->siglock){-...}-{2:2}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x36/0x50 kernel/locking/spinlock.c:159
       __lock_task_sighand+0x108/0x2e0 kernel/signal.c:1391
       lock_task_sighand include/linux/sched/signal.h:688 [inline]
       task_work_add+0x1db/0x2b0 kernel/task_work.c:58
       io_req_task_work_add fs/io_uring.c:2048 [inline]
       __io_async_wake+0x443/0x8d0 fs/io_uring.c:4961
       io_poll_double_wake+0x32c/0x550 fs/io_uring.c:5083
       __wake_up_common+0x14c/0x4c0 kernel/sched/wait.c:93
       __wake_up_common_lock+0xd0/0x130 kernel/sched/wait.c:123
       n_tty_set_termios+0x73d/0x1010 drivers/tty/n_tty.c:1869
       tty_set_termios+0x5f1/0x840 drivers/tty/tty_ioctl.c:341
       set_termios.part.0+0x2c4/0x4d0 drivers/tty/tty_ioctl.c:414
       set_termios drivers/tty/tty_ioctl.c:368 [inline]
       tty_mode_ioctl+0x2f3/0xf10 drivers/tty/tty_ioctl.c:700
       n_tty_ioctl_helper+0x55/0x3a0 drivers/tty/tty_ioctl.c:883
       n_tty_ioctl+0x56/0x370 drivers/tty/n_tty.c:2482
       tty_ioctl+0x8ba/0x17c0 drivers/tty/tty_io.c:2751
       vfs_ioctl fs/ioctl.c:48 [inline]
       __do_sys_ioctl fs/ioctl.c:753 [inline]
       __se_sys_ioctl fs/ioctl.c:739 [inline]
       __x64_sys_ioctl+0x196/0x210 fs/ioctl.c:739
       do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
       entry_SYSCALL_64_after_hwframe+0x44/0xa9

-> #2 (&tty->write_wait){-.-.}-{2:2}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x36/0x50 kernel/locking/spinlock.c:159
       __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:122
       tty_port_default_wakeup+0x26/0x40 drivers/tty/tty_port.c:50
       serial8250_tx_chars+0x516/0xb40 drivers/tty/serial/8250/8250_port.c:1844
       serial8250_handle_irq.part.0+0x3f1/0x4c0 drivers/tty/serial/8250/8250_port.c:1931
       serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1904 [inline]
       serial8250_default_handle_irq+0xb8/0x230 drivers/tty/serial/8250/8250_port.c:1947
       serial8250_interrupt+0xf4/0x1a0 drivers/tty/serial/8250/8250_core.c:126
       __handle_irq_event_percpu+0x2ef/0x810 kernel/irq/handle.c:156
       handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
       handle_irq_event+0x102/0x290 kernel/irq/handle.c:213
       handle_edge_irq+0x249/0xd00 kernel/irq/chip.c:819
       asm_call_irq_on_stack+0x12/0x20
       __run_irq_on_irqstack arch/x86/include/asm/irq_stack.h:48 [inline]
       run_irq_on_irqstack_cond arch/x86/include/asm/irq_stack.h:101 [inline]
       handle_irq arch/x86/kernel/irq.c:230 [inline]
       __common_interrupt arch/x86/kernel/irq.c:249 [inline]
       common_interrupt+0xe6/0x190 arch/x86/kernel/irq.c:239
       asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:635
       native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
       arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
       __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
       _raw_spin_unlock_irqrestore+0x25/0x40 kernel/locking/spinlock.c:191
       spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
       uart_write+0x304/0x580 drivers/tty/serial/serial_core.c:615
       do_output_char+0x5e4/0x860 drivers/tty/n_tty.c:442
       process_output drivers/tty/n_tty.c:509 [inline]
       n_tty_write+0x487/0xf90 drivers/tty/n_tty.c:2361
       do_tty_write drivers/tty/tty_io.c:1028 [inline]
       file_tty_write.constprop.0+0x4f8/0x8d0 drivers/tty/tty_io.c:1118
       redirected_tty_write+0xa1/0xc0 drivers/tty/tty_io.c:1125
       call_write_iter include/linux/fs.h:1903 [inline]
       do_iter_readv_writev+0x476/0x750 fs/read_write.c:740
       do_iter_write+0x18d/0x670 fs/read_write.c:866
       vfs_writev+0x1aa/0x5d0 fs/read_write.c:939
       do_writev+0x139/0x300 fs/read_write.c:982
       do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
       entry_SYSCALL_64_after_hwframe+0x44/0xa9

-> #1 (&port_lock_key){-.-.}-{2:2}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x36/0x50 kernel/locking/spinlock.c:159
       serial8250_console_write+0x87a/0xa90 drivers/tty/serial/8250/8250_port.c:3304
       call_console_drivers kernel/printk/printk.c:1909 [inline]
       console_unlock+0x826/0xb30 kernel/printk/printk.c:2523
       register_console kernel/printk/printk.c:2864 [inline]
       register_console+0x53d/0x800 kernel/printk/printk.c:2754
       univ8250_console_init+0x3a/0x46 drivers/tty/serial/8250/8250_core.c:690
       console_init+0x361/0x4fa kernel/printk/printk.c:2974
       start_kernel+0x2f9/0x4a2 init/main.c:988
       secondary_startup_64_no_verify+0xc2/0xcb

-> #0 (console_owner){-.-.}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:2869 [inline]
       check_prevs_add kernel/locking/lockdep.c:2994 [inline]
       validate_chain kernel/locking/lockdep.c:3609 [inline]
       __lock_acquire+0x2a48/0x5a80 kernel/locking/lockdep.c:4834
       lock_acquire kernel/locking/lockdep.c:5444 [inline]
       lock_acquire+0x197/0x6c0 kernel/locking/lockdep.c:5409
       console_trylock_spinning kernel/printk/printk.c:1852 [inline]
       vprintk_emit+0x303/0x4d0 kernel/printk/printk.c:2051
       vprintk_func+0x8b/0x140 kernel/printk/printk_safe.c:401
       printk+0xba/0xed kernel/printk/printk.c:2100
       fail_dump lib/fault-inject.c:45 [inline]
       should_fail+0x472/0x5a0 lib/fault-inject.c:146
       should_failslab+0x5/0x10 mm/slab_common.c:1194
       slab_pre_alloc_hook mm/slab.h:516 [inline]
       slab_alloc_node mm/slub.c:2813 [inline]
       slab_alloc mm/slub.c:2896 [inline]
       kmem_cache_alloc+0x5b/0x350 mm/slub.c:2901
       __sigqueue_alloc+0x23f/0x550 kernel/signal.c:435
       __send_signal+0x5db/0x1030 kernel/signal.c:1116
       tty_signal_session_leader+0x18d/0x5b0 drivers/tty/tty_jobctrl.c:211
       __tty_hangup.part.0+0x33c/0x9b0 drivers/tty/tty_io.c:619
       __tty_hangup drivers/tty/tty_io.c:574 [inline]
       tty_vhangup drivers/tty/tty_io.c:697 [inline]
       tty_ioctl+0x103e/0x17c0 drivers/tty/tty_io.c:2683
       vfs_ioctl fs/ioctl.c:48 [inline]
       __do_sys_ioctl fs/ioctl.c:753 [inline]
       __se_sys_ioctl fs/ioctl.c:739 [inline]
       __x64_sys_ioctl+0x196/0x210 fs/ioctl.c:739
       do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
       entry_SYSCALL_64_after_hwframe+0x44/0xa9

other info that might help us debug this:

Chain exists of:
  console_owner --> &tty->write_wait --> &sighand->siglock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&sighand->siglock);
                               lock(&tty->write_wait);
                               lock(&sighand->siglock);
  lock(console_owner);

 *** DEADLOCK ***

3 locks held by syz-executor.2/19435:
 #0: ffff8880484171c0 (&tty->legacy_mutex){+.+.}-{3:3}, at: tty_lock+0xbd/0x120 drivers/tty/tty_mutex.c:19
 #1: ffffffff84c0a098 (tasklist_lock){.+.+}-{2:2}, at: tty_signal_session_leader+0x26/0x5b0 drivers/tty/tty_jobctrl.c:197
 #2: ffff888048aa2518 (&sighand->siglock){-...}-{2:2}, at: spin_lock_irq include/linux/spinlock.h:379 [inline]
 #2: ffff888048aa2518 (&sighand->siglock){-...}-{2:2}, at: tty_signal_session_leader+0xfc/0x5b0 drivers/tty/tty_jobctrl.c:200

stack backtrace:
CPU: 1 PID: 19435 Comm: syz-executor.2 Not tainted 5.10.45 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:118
 check_noncircular+0x25f/0x2e0 kernel/locking/lockdep.c:2118
 check_prev_add kernel/locking/lockdep.c:2869 [inline]
 check_prevs_add kernel/locking/lockdep.c:2994 [inline]
 validate_chain kernel/locking/lockdep.c:3609 [inline]
 __lock_acquire+0x2a48/0x5a80 kernel/locking/lockdep.c:4834
 lock_acquire kernel/locking/lockdep.c:5444 [inline]
 lock_acquire+0x197/0x6c0 kernel/locking/lockdep.c:5409
 console_trylock_spinning kernel/printk/printk.c:1852 [inline]
 vprintk_emit+0x303/0x4d0 kernel/printk/printk.c:2051
 vprintk_func+0x8b/0x140 kernel/printk/printk_safe.c:401
 printk+0xba/0xed kernel/printk/printk.c:2100
 fail_dump lib/fault-inject.c:45 [inline]
 should_fail+0x472/0x5a0 lib/fault-inject.c:146
 should_failslab+0x5/0x10 mm/slab_common.c:1194
 slab_pre_alloc_hook mm/slab.h:516 [inline]
 slab_alloc_node mm/slub.c:2813 [inline]
 slab_alloc mm/slub.c:2896 [inline]
 kmem_cache_alloc+0x5b/0x350 mm/slub.c:2901
 __sigqueue_alloc+0x23f/0x550 kernel/signal.c:435
 __send_signal+0x5db/0x1030 kernel/signal.c:1116
 tty_signal_session_leader+0x18d/0x5b0 drivers/tty/tty_jobctrl.c:211
 __tty_hangup.part.0+0x33c/0x9b0 drivers/tty/tty_io.c:619
 __tty_hangup drivers/tty/tty_io.c:574 [inline]
 tty_vhangup drivers/tty/tty_io.c:697 [inline]
 tty_ioctl+0x103e/0x17c0 drivers/tty/tty_io.c:2683
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x196/0x210 fs/ioctl.c:739
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x466609
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb47274f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 0000000000466609
RDX: 0000000000000000 RSI: 0000000000005437 RDI: 0000000000000003
RBP: 00007fb47274f1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcc9c5f83f R14: 00007fb47274f300 R15: 0000000000022000
EXT4-fs error (device loop3): ext4_fill_super:4947: inode #2: comm syz-executor.3: iget: bad extra_isize 235 (inode size 512)
EXT4-fs (loop3): get root inode failed
EXT4-fs (loop3): mount failed
EXT4-fs error (device loop6): ext4_fill_super:4947: inode #2: comm syz-executor.6: iget: bad extra_isize 49131 (inode size 512)
EXT4-fs (loop6): get root inode failed
EXT4-fs (loop6): mount failed
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19447 Comm: syz-executor.2 Not tainted 5.10.45 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 _copy_from_user+0x2e/0x1b0 lib/usercopy.c:14
 copy_from_user include/linux/uaccess.h:192 [inline]
 kstrtouint_from_user+0xbd/0x220 lib/kstrtox.c:401
 proc_fail_nth_write+0x78/0x220 fs/proc/base.c:1398
 vfs_write+0x29a/0xa20 fs/read_write.c:603
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4192bf
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 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 cc fd ff ff 48
RSP: 002b:00007fb472770170 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004192bf
RDX: 0000000000000001 RSI: 00007fb4727701e0 RDI: 0000000000000005
RBP: 00007fb4727701d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007ffcc9c5f83f R14: 00007fb472770300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 19461 Comm: syz-executor.5 Not tainted 5.10.45 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 should_failslab+0x5/0x10 mm/slab_common.c:1194
 slab_pre_alloc_hook mm/slab.h:516 [inline]
 slab_alloc_node mm/slub.c:2813 [inline]
 slab_alloc mm/slub.c:2896 [inline]
 kmem_cache_alloc+0x5b/0x350 mm/slub.c:2901
 mem_pool_alloc mm/kmemleak.c:423 [inline]
 create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578
 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
 slab_post_alloc_hook mm/slab.h:535 [inline]
 slab_alloc_node mm/slub.c:2888 [inline]
 slab_alloc mm/slub.c:2896 [inline]
 kmem_cache_alloc+0x159/0x350 mm/slub.c:2901
 skb_clone+0x14f/0x3c0 net/core/skbuff.c:1451
 ip_mc_output+0x698/0xa30 net/ipv4/ip_output.c:410
 dst_output include/net/dst.h:443 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb net/ipv4/ip_output.c:1568 [inline]
 ip_push_pending_frames+0x12e/0x2c0 net/ipv4/ip_output.c:1588
 icmp_push_reply+0x351/0x490 net/ipv4/icmp.c:393
 __icmp_send+0xb88/0x1450 net/ipv4/icmp.c:762
 icmp_send include/net/icmp.h:43 [inline]
 __udp4_lib_rcv+0x14f5/0x2ab0 net/ipv4/udp.c:2405
 ip_protocol_deliver_rcu+0x5d2/0xa30 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x20c/0x380 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:301 [inline]
 NF_HOOK include/linux/netfilter.h:295 [inline]
 ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:449 [inline]
 ip_rcv_finish+0xe8/0x1e0 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:301 [inline]
 NF_HOOK include/linux/netfilter.h:295 [inline]
 ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x197/0x1e0 net/core/dev.c:5344
 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5458
 netif_receive_skb_internal net/core/dev.c:5563 [inline]
 netif_receive_skb+0x149/0x800 net/core/dev.c:5622
 tun_rx_batched.isra.0+0x462/0x710 drivers/net/tun.c:1493
 tun_get_user+0x2048/0x3180 drivers/net/tun.c:1947
 tun_chr_write_iter+0xe1/0x1d0 drivers/net/tun.c:1980
 call_write_iter include/linux/fs.h:1903 [inline]
 new_sync_write+0x42c/0x660 fs/read_write.c:518
 vfs_write+0x77f/0xa20 fs/read_write.c:605
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4192bf
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 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 cc fd ff ff 48
RSP: 002b:00007fc88ea4b150 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004192bf
RDX: 000000000000fdef RSI: 0000000020000000 RDI: 00000000000000f0
RBP: 00007fc88ea4b1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007fffc99c58ef R14: 00007fc88ea4b300 R15: 0000000000022000
EXT4-fs error (device loop6): ext4_fill_super:4947: inode #2: comm syz-executor.6: iget: bad extra_isize 49131 (inode size 512)
EXT4-fs (loop6): get root inode failed
EXT4-fs (loop6): mount failed
EXT4-fs error (device loop3): ext4_fill_super:4947: inode #2: comm syz-executor.3: iget: bad extra_isize 235 (inode size 512)
EXT4-fs (loop3): get root inode failed
EXT4-fs (loop3): mount failed
EXT4-fs error (device loop6): ext4_fill_super:4947: inode #2: comm syz-executor.6: iget: bad extra_isize 49131 (inode size 512)
EXT4-fs (loop6): get root inode failed
EXT4-fs (loop6): mount failed
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 19482 Comm: syz-executor.5 Not tainted 5.10.45 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 should_failslab+0x5/0x10 mm/slab_common.c:1194
 slab_pre_alloc_hook mm/slab.h:516 [inline]
 slab_alloc_node mm/slub.c:2813 [inline]
 slab_alloc mm/slub.c:2896 [inline]
 kmem_cache_alloc+0x5b/0x350 mm/slub.c:2901
 dst_alloc+0x9e/0x610 net/core/dst.c:93
 rt_dst_clone+0x59/0x860 net/ipv4/route.c:1674
 ip_mc_finish_output+0x95/0x280 net/ipv4/ip_output.c:350
 NF_HOOK include/linux/netfilter.h:301 [inline]
 NF_HOOK include/linux/netfilter.h:295 [inline]
 ip_mc_output+0x718/0xa30 net/ipv4/ip_output.c:412
 dst_output include/net/dst.h:443 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 ip_send_skb net/ipv4/ip_output.c:1568 [inline]
 ip_push_pending_frames+0x12e/0x2c0 net/ipv4/ip_output.c:1588
 icmp_push_reply+0x351/0x490 net/ipv4/icmp.c:393
 __icmp_send+0xb88/0x1450 net/ipv4/icmp.c:762
 icmp_send include/net/icmp.h:43 [inline]
 __udp4_lib_rcv+0x14f5/0x2ab0 net/ipv4/udp.c:2405
 ip_protocol_deliver_rcu+0x5d2/0xa30 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x20c/0x380 net/ipv4/ip_input.c:231
 NF_HOOK include/linux/netfilter.h:301 [inline]
 NF_HOOK include/linux/netfilter.h:295 [inline]
 ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:449 [inline]
 ip_rcv_finish+0xe8/0x1e0 net/ipv4/ip_input.c:428
 NF_HOOK include/linux/netfilter.h:301 [inline]
 NF_HOOK include/linux/netfilter.h:295 [inline]
 ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:539
 __netif_receive_skb_one_core+0x197/0x1e0 net/core/dev.c:5344
 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5458
 netif_receive_skb_internal net/core/dev.c:5563 [inline]
 netif_receive_skb+0x149/0x800 net/core/dev.c:5622
 tun_rx_batched.isra.0+0x462/0x710 drivers/net/tun.c:1493
 tun_get_user+0x2048/0x3180 drivers/net/tun.c:1947
 tun_chr_write_iter+0xe1/0x1d0 drivers/net/tun.c:1980
 call_write_iter include/linux/fs.h:1903 [inline]
 new_sync_write+0x42c/0x660 fs/read_write.c:518
 vfs_write+0x77f/0xa20 fs/read_write.c:605
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4192bf
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 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 cc fd ff ff 48
RSP: 002b:00007fc88ea4b150 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004192bf
RDX: 000000000000fdef RSI: 0000000020000000 RDI: 00000000000000f0
RBP: 00007fc88ea4b1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007fffc99c58ef R14: 00007fc88ea4b300 R15: 0000000000022000