syzbot

========================================================
WARNING: possible irq lock inversion dependency detected
5.9.0-syzkaller #0 Not tainted
--------------------------------------------------------
syz-executor.3/6864 just changed the state of lock:
ffff888214dfb108 (&group->lock){..-.}-{2:2}, at: snd_pcm_period_elapsed+0x2c/0x210 sound/core/pcm_lib.c:1799
but this lock took another, SOFTIRQ-READ-unsafe lock in the past:
 (&card->ctl_files_rwlock){.+.+}-{2:2}


and interrupts could create inverse lock ordering between them.


other info that might help us debug this:
 Possible interrupt unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&card->ctl_files_rwlock);
                               local_irq_disable();
                               lock(&group->lock);
                               lock(&card->ctl_files_rwlock);
  <Interrupt>
    lock(&group->lock);

 *** DEADLOCK ***

4 locks held by syz-executor.3/6864:
 #0: ffffffff8b511de8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8b511de8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83c/0xd40 net/core/rtnetlink.c:5560
 #1: ffffffff8a8f72c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:240
 #2: ffffffff8a7d4c40 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x1d0/0x280 kernel/printk/printk.c:2027
 #3: ffffc90000da8db0 ((&dpcm->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:45 [inline]
 #3: ffffc90000da8db0 ((&dpcm->timer)){+.-.}-{0:0}, at: call_timer_fn+0x57/0x160 kernel/time/timer.c:1405

the shortest dependencies between 2nd lock and 1st lock:
 -> (&card->ctl_files_rwlock){.+.+}-{2:2} {
    HARDIRQ-ON-R at:
                      lock_acquire+0x160/0x6e0 kernel/locking/lockdep.c:5442
                      __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                      _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223
                      snd_ctl_notify+0x86/0x550 sound/core/control.c:153
                      __snd_ctl_add_replace+0x582/0x8a0 sound/core/control.c:382
                      snd_ctl_add_replace sound/core/control.c:399 [inline]
                      snd_ctl_add+0x6e/0x110 sound/core/control.c:426
                      snd_card_dummy_new_mixer sound/drivers/dummy.c:885 [inline]
                      snd_dummy_probe+0x12bb/0x1ff0 sound/drivers/dummy.c:1080
                      platform_drv_probe+0xcd/0x150 drivers/base/platform.c:761
                      really_probe+0x74b/0x1100 drivers/base/dd.c:558
                      driver_probe_device+0x106/0x1a0 drivers/base/dd.c:738
                      bus_for_each_drv+0x108/0x170 drivers/base/bus.c:431
                      __device_attach+0x262/0x3f0 drivers/base/dd.c:912
                      bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:491
                      device_add+0x15e6/0x1960 drivers/base/core.c:2936
                      platform_device_add+0x4ad/0x6e0 drivers/base/platform.c:611
                      platform_device_register_full+0x445/0x530 drivers/base/platform.c:734
                      platform_device_register_resndata include/linux/platform_device.h:131 [inline]
                      platform_device_register_simple include/linux/platform_device.h:160 [inline]
                      alsa_card_dummy_init+0x1b3/0x39c sound/drivers/dummy.c:1168
                      do_one_initcall+0x14b/0x350 init/main.c:1205
                      do_initcall_level+0x1fb/0x2c0 init/main.c:1278
                      do_initcalls+0x4b/0x8c init/main.c:1294
                      kernel_init_freeable+0x356/0x474 init/main.c:1514
                      kernel_init+0xd/0x290 init/main.c:1403
                      ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
    SOFTIRQ-ON-R at:
                      lock_acquire+0x160/0x6e0 kernel/locking/lockdep.c:5442
                      __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                      _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223
                      snd_ctl_notify+0x86/0x550 sound/core/control.c:153
                      __snd_ctl_add_replace+0x582/0x8a0 sound/core/control.c:382
                      snd_ctl_add_replace sound/core/control.c:399 [inline]
                      snd_ctl_add+0x6e/0x110 sound/core/control.c:426
                      snd_card_dummy_new_mixer sound/drivers/dummy.c:885 [inline]
                      snd_dummy_probe+0x12bb/0x1ff0 sound/drivers/dummy.c:1080
                      platform_drv_probe+0xcd/0x150 drivers/base/platform.c:761
                      really_probe+0x74b/0x1100 drivers/base/dd.c:558
                      driver_probe_device+0x106/0x1a0 drivers/base/dd.c:738
                      bus_for_each_drv+0x108/0x170 drivers/base/bus.c:431
                      __device_attach+0x262/0x3f0 drivers/base/dd.c:912
                      bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:491
                      device_add+0x15e6/0x1960 drivers/base/core.c:2936
                      platform_device_add+0x4ad/0x6e0 drivers/base/platform.c:611
                      platform_device_register_full+0x445/0x530 drivers/base/platform.c:734
                      platform_device_register_resndata include/linux/platform_device.h:131 [inline]
                      platform_device_register_simple include/linux/platform_device.h:160 [inline]
                      alsa_card_dummy_init+0x1b3/0x39c sound/drivers/dummy.c:1168
                      do_one_initcall+0x14b/0x350 init/main.c:1205
                      do_initcall_level+0x1fb/0x2c0 init/main.c:1278
                      do_initcalls+0x4b/0x8c init/main.c:1294
                      kernel_init_freeable+0x356/0x474 init/main.c:1514
                      kernel_init+0xd/0x290 init/main.c:1403
                      ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
    INITIAL READ USE at:
                          lock_acquire+0x160/0x6e0 kernel/locking/lockdep.c:5442
                          __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
                          _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223
                          snd_ctl_notify+0x86/0x550 sound/core/control.c:153
                          __snd_ctl_add_replace+0x582/0x8a0 sound/core/control.c:382
                          snd_ctl_add_replace sound/core/control.c:399 [inline]
                          snd_ctl_add+0x6e/0x110 sound/core/control.c:426
                          snd_card_dummy_new_mixer sound/drivers/dummy.c:885 [inline]
                          snd_dummy_probe+0x12bb/0x1ff0 sound/drivers/dummy.c:1080
                          platform_drv_probe+0xcd/0x150 drivers/base/platform.c:761
                          really_probe+0x74b/0x1100 drivers/base/dd.c:558
                          driver_probe_device+0x106/0x1a0 drivers/base/dd.c:738
                          bus_for_each_drv+0x108/0x170 drivers/base/bus.c:431
                          __device_attach+0x262/0x3f0 drivers/base/dd.c:912
                          bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:491
                          device_add+0x15e6/0x1960 drivers/base/core.c:2936
                          platform_device_add+0x4ad/0x6e0 drivers/base/platform.c:611
                          platform_device_register_full+0x445/0x530 drivers/base/platform.c:734
                          platform_device_register_resndata include/linux/platform_device.h:131 [inline]
                          platform_device_register_simple include/linux/platform_device.h:160 [inline]
                          alsa_card_dummy_init+0x1b3/0x39c sound/drivers/dummy.c:1168
                          do_one_initcall+0x14b/0x350 init/main.c:1205
                          do_initcall_level+0x1fb/0x2c0 init/main.c:1278
                          do_initcalls+0x4b/0x8c init/main.c:1294
                          kernel_init_freeable+0x356/0x474 init/main.c:1514
                          kernel_init+0xd/0x290 init/main.c:1403
                          ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
  }
  ... key      at: [<ffffffff8e64d6a0>] snd_card_new.__key.3+0x0/0x40
  ... acquired at:
   lock_acquire+0x160/0x6e0 kernel/locking/lockdep.c:5442
   __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline]
   _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223
   snd_ctl_notify+0x86/0x550 sound/core/control.c:153
   loopback_check_format sound/drivers/aloop.c:358 [inline]
   loopback_trigger+0xddb/0x17f0 sound/drivers/aloop.c:387
   snd_pcm_do_start sound/core/pcm_native.c:1350 [inline]
   snd_pcm_action_single sound/core/pcm_native.c:1207 [inline]
   snd_pcm_action sound/core/pcm_native.c:1290 [inline]
   snd_pcm_start+0x475/0x6d0 sound/core/pcm_native.c:1391
   __snd_pcm_lib_xfer+0xf3d/0x12f0 sound/core/pcm_lib.c:2247
   snd_pcm_oss_write3+0x209/0x330 sound/core/oss/pcm_oss.c:1221
   snd_pcm_plug_write_transfer+0x28b/0x490 sound/core/oss/pcm_plugin.c:624
   snd_pcm_oss_write2+0x156/0x370 sound/core/oss/pcm_oss.c:1353
   snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1419 [inline]
   snd_pcm_oss_write+0x911/0xd70 sound/core/oss/pcm_oss.c:2765
   vfs_write+0x2dd/0xd10 fs/read_write.c:584
   ksys_write+0x11b/0x220 fs/read_write.c:639
   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
   entry_SYSCALL_64_after_hwframe+0x44/0xa9

-> (&group->lock){..-.}-{2:2} {
   IN-SOFTIRQ-W at:
                    lock_acquire+0x160/0x6e0 kernel/locking/lockdep.c:5442
                    __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
                    _raw_spin_lock_irqsave+0xaa/0xd0 kernel/locking/spinlock.c:159
                    snd_pcm_period_elapsed+0x2c/0x210 sound/core/pcm_lib.c:1799
                    call_timer_fn+0x91/0x160 kernel/time/timer.c:1415
                    expire_timers kernel/time/timer.c:1460 [inline]
                    __run_timers+0x770/0x9a0 kernel/time/timer.c:1757
                    run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1770
                    __do_softirq+0x388/0x748 kernel/softirq.c:298
                    asm_call_irq_on_stack+0xf/0x20
                    __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
                    run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
                    do_softirq_own_stack+0x9a/0xe0 arch/x86/kernel/irq_64.c:77
                    invoke_softirq kernel/softirq.c:393 [inline]
                    __irq_exit_rcu+0x200/0x230 kernel/softirq.c:423
                    irq_exit_rcu+0x5/0x20 kernel/softirq.c:435
                    sysvec_apic_timer_interrupt+0xe0/0xf0 arch/x86/kernel/apic/apic.c:1091
                    asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
                    arch_local_irq_restore arch/x86/include/asm/paravirt.h:653 [inline]
                    console_unlock+0xd42/0x10f0 kernel/printk/printk.c:2507
                    vprintk_emit+0x1e9/0x280 kernel/printk/printk.c:2028
                    printk+0x62/0x83 kernel/printk/printk.c:2076
                    batadv_check_known_mac_addr+0x287/0x3c0 net/batman-adv/hard-interface.c:516
                    batadv_hard_if_event+0x2de/0x1360 net/batman-adv/hard-interface.c:1064
                    notifier_call_chain kernel/notifier.c:83 [inline]
                    raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:410
                    call_netdevice_notifiers_info net/core/dev.c:2033 [inline]
                    call_netdevice_notifiers_extack net/core/dev.c:2045 [inline]
                    call_netdevice_notifiers net/core/dev.c:2059 [inline]
                    dev_set_mac_address+0x2aa/0x3c0 net/core/dev.c:8609
                    do_setlink+0x6f2/0x3e80 net/core/rtnetlink.c:2661
                    __rtnl_newlink net/core/rtnetlink.c:3374 [inline]
                    rtnl_newlink+0x146e/0x1b90 net/core/rtnetlink.c:3500
                    rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5563
                    netlink_rcv_skb+0x190/0x3a0 net/netlink/af_netlink.c:2470
                    netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
                    netlink_unicast+0x780/0x930 net/netlink/af_netlink.c:1330
                    netlink_sendmsg+0x9a8/0xd40 net/netlink/af_netlink.c:1919
                    sock_sendmsg_nosec net/socket.c:651 [inline]
                    sock_sendmsg net/socket.c:671 [inline]
                    __sys_sendto+0x42a/0x5c0 net/socket.c:1992
                    __do_sys_sendto net/socket.c:2004 [inline]
                    __se_sys_sendto net/socket.c:2000 [inline]
                    __x64_sys_sendto+0xda/0xf0 net/socket.c:2000
                    do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                    entry_SYSCALL_64_after_hwframe+0x44/0xa9
   INITIAL USE at:
                   lock_acquire+0x160/0x6e0 kernel/locking/lockdep.c:5442
                   __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
                   _raw_spin_lock_irq+0xa6/0xc0 kernel/locking/spinlock.c:167
                   spin_lock_irq include/linux/spinlock.h:379 [inline]
                   snd_pcm_group_lock_irq sound/core/pcm_native.c:97 [inline]
                   snd_pcm_stream_lock_irq sound/core/pcm_native.c:136 [inline]
                   snd_pcm_hw_params+0xca/0x16a0 sound/core/pcm_native.c:672
                   snd_pcm_oss_change_params_locked+0x2102/0x3e00 sound/core/oss/pcm_oss.c:941
                   snd_pcm_oss_make_ready_locked sound/core/oss/pcm_oss.c:1166 [inline]
                   snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1384 [inline]
                   snd_pcm_oss_write+0x269/0xd70 sound/core/oss/pcm_oss.c:2765
                   vfs_write+0x2dd/0xd10 fs/read_write.c:584
                   ksys_write+0x11b/0x220 fs/read_write.c:639
                   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
                   entry_SYSCALL_64_after_hwframe+0x44/0xa9
 }
 ... key      at: [<ffffffff8e64f820>] snd_pcm_group_init.__key+0x0/0x40
 ... acquired at:
   mark_usage kernel/locking/lockdep.c:4305 [inline]
   __lock_acquire+0x9ee/0x6a40 kernel/locking/lockdep.c:4791
   lock_acquire+0x160/0x6e0 kernel/locking/lockdep.c:5442
   __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
   _raw_spin_lock_irqsave+0xaa/0xd0 kernel/locking/spinlock.c:159
   snd_pcm_period_elapsed+0x2c/0x210 sound/core/pcm_lib.c:1799
   call_timer_fn+0x91/0x160 kernel/time/timer.c:1415
   expire_timers kernel/time/timer.c:1460 [inline]
   __run_timers+0x770/0x9a0 kernel/time/timer.c:1757
   run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1770
   __do_softirq+0x388/0x748 kernel/softirq.c:298
   asm_call_irq_on_stack+0xf/0x20
   __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
   run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
   do_softirq_own_stack+0x9a/0xe0 arch/x86/kernel/irq_64.c:77
   invoke_softirq kernel/softirq.c:393 [inline]
   __irq_exit_rcu+0x200/0x230 kernel/softirq.c:423
   irq_exit_rcu+0x5/0x20 kernel/softirq.c:435
   sysvec_apic_timer_interrupt+0xe0/0xf0 arch/x86/kernel/apic/apic.c:1091
   asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
   arch_local_irq_restore arch/x86/include/asm/paravirt.h:653 [inline]
   console_unlock+0xd42/0x10f0 kernel/printk/printk.c:2507
   vprintk_emit+0x1e9/0x280 kernel/printk/printk.c:2028
   printk+0x62/0x83 kernel/printk/printk.c:2076
   batadv_check_known_mac_addr+0x287/0x3c0 net/batman-adv/hard-interface.c:516
   batadv_hard_if_event+0x2de/0x1360 net/batman-adv/hard-interface.c:1064
   notifier_call_chain kernel/notifier.c:83 [inline]
   raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:410
   call_netdevice_notifiers_info net/core/dev.c:2033 [inline]
   call_netdevice_notifiers_extack net/core/dev.c:2045 [inline]
   call_netdevice_notifiers net/core/dev.c:2059 [inline]
   dev_set_mac_address+0x2aa/0x3c0 net/core/dev.c:8609
   do_setlink+0x6f2/0x3e80 net/core/rtnetlink.c:2661
   __rtnl_newlink net/core/rtnetlink.c:3374 [inline]
   rtnl_newlink+0x146e/0x1b90 net/core/rtnetlink.c:3500
   rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5563
   netlink_rcv_skb+0x190/0x3a0 net/netlink/af_netlink.c:2470
   netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
   netlink_unicast+0x780/0x930 net/netlink/af_netlink.c:1330
   netlink_sendmsg+0x9a8/0xd40 net/netlink/af_netlink.c:1919
   sock_sendmsg_nosec net/socket.c:651 [inline]
   sock_sendmsg net/socket.c:671 [inline]
   __sys_sendto+0x42a/0x5c0 net/socket.c:1992
   __do_sys_sendto net/socket.c:2004 [inline]
   __se_sys_sendto net/socket.c:2000 [inline]
   __x64_sys_sendto+0xda/0xf0 net/socket.c:2000
   do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
   entry_SYSCALL_64_after_hwframe+0x44/0xa9


stack backtrace:
CPU: 1 PID: 6864 Comm: syz-executor.3 Not tainted 5.9.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d6/0x29e lib/dump_stack.c:118
 print_irq_inversion_bug+0xa5d/0xde0 kernel/locking/lockdep.c:3817
 check_usage_forwards kernel/locking/lockdep.c:2470 [inline]
 mark_lock_irq kernel/locking/lockdep.c:3980 [inline]
 mark_lock+0x111b/0x1e20 kernel/locking/lockdep.c:4408
 mark_usage kernel/locking/lockdep.c:4305 [inline]
 __lock_acquire+0x9ee/0x6a40 kernel/locking/lockdep.c:4791
 lock_acquire+0x160/0x6e0 kernel/locking/lockdep.c:5442
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xaa/0xd0 kernel/locking/spinlock.c:159
 snd_pcm_period_elapsed+0x2c/0x210 sound/core/pcm_lib.c:1799
 call_timer_fn+0x91/0x160 kernel/time/timer.c:1415
 expire_timers kernel/time/timer.c:1460 [inline]
 __run_timers+0x770/0x9a0 kernel/time/timer.c:1757
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1770
 __do_softirq+0x388/0x748 kernel/softirq.c:298
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0x9a/0xe0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:393 [inline]
 __irq_exit_rcu+0x200/0x230 kernel/softirq.c:423
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0xe0/0xf0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:653 [inline]
RIP: 0010:console_unlock+0xd42/0x10f0 kernel/printk/printk.c:2507
Code: 24 40 42 80 3c 38 00 74 0c 48 c7 c7 68 a1 76 8a e8 73 cf 58 00 48 83 3d 83 73 15 09 00 0f 84 80 03 00 00 48 8b 7c 24 20 57 9d <0f> 1f 44 00 00 f6 44 24 0f 01 74 22 e8 9d ab 17 00 48 c7 c7 8b 95
RSP: 0018:ffffc90001716ff0 EFLAGS: 00000282
RAX: 1ffffffff14ed42d RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000282
RBP: ffffc90001717160 R08: dffffc0000000000 R09: fffffbfff1a702c9
R10: fffffbfff1a702c9 R11: 0000000000000000 R12: 1ffffffff16215f6
R13: 0000000000000000 R14: ffffffff8b10afe8 R15: dffffc0000000000
 vprintk_emit+0x1e9/0x280 kernel/printk/printk.c:2028
 printk+0x62/0x83 kernel/printk/printk.c:2076
 batadv_check_known_mac_addr+0x287/0x3c0 net/batman-adv/hard-interface.c:516
 batadv_hard_if_event+0x2de/0x1360 net/batman-adv/hard-interface.c:1064
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:410
 call_netdevice_notifiers_info net/core/dev.c:2033 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2045 [inline]
 call_netdevice_notifiers net/core/dev.c:2059 [inline]
 dev_set_mac_address+0x2aa/0x3c0 net/core/dev.c:8609
 do_setlink+0x6f2/0x3e80 net/core/rtnetlink.c:2661
 __rtnl_newlink net/core/rtnetlink.c:3374 [inline]
 rtnl_newlink+0x146e/0x1b90 net/core/rtnetlink.c:3500
 rtnetlink_rcv_msg+0x889/0xd40 net/core/rtnetlink.c:5563
 netlink_rcv_skb+0x190/0x3a0 net/netlink/af_netlink.c:2470
 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
 netlink_unicast+0x780/0x930 net/netlink/af_netlink.c:1330
 netlink_sendmsg+0x9a8/0xd40 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg net/socket.c:671 [inline]
 __sys_sendto+0x42a/0x5c0 net/socket.c:1992
 __do_sys_sendto net/socket.c:2004 [inline]
 __se_sys_sendto net/socket.c:2000 [inline]
 __x64_sys_sendto+0xda/0xf0 net/socket.c:2000
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4178d7
Code: 2c 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 81 19 00 00 c3 48 83 ec 08 e8 e7 fa ff ff 48 89 04 24 49 89 ca b8 2c 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 2d fb ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffef543aa10 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000016a4300 RCX: 00000000004178d7
RDX: 000000000000002c RSI: 00000000016a4350 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffef543aa20 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00000000016a4350 R15: 0000000000000003