======================================
| [   15.176973][  T295] RCU nest depth: 0, expected: 0
| [   15.177162][  T295] 2 locks held by tc/295:
| [ 15.177303][ T295] #0: ffffffff8fc09c08 (rtnl_mutex){+.+.}-{4:4}, at: tc_new_tfilter (net/sched/cls_api.c:2261)
| [ 15.177638][ T295] #1: ffff88800a819290 (&tp->lock){+.+.}-{3:3}, at: tc_new_tfilter (net/sched/cls_api.c:2383)
[   15.178230][  T295] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.178453][  T295] Call Trace:
[   15.178593][  T295]  <TASK>
[ 15.178713][ T295] dump_stack_lvl (lib/dump_stack.c:123)
[ 15.178899][ T295] __might_resched (kernel/sched/core.c:8759)
[ 15.179078][ T295] ? tc_new_tfilter (net/sched/cls_api.c:2383)
[ 15.179261][ T295] cpus_read_lock (./include/linux/kernel.h:73 ./include/linux/percpu-rwsem.h:49 kernel/cpu.c:490)
[ 15.179439][ T295] static_key_slow_inc (kernel/jump_label.c:191)
[ 15.179615][ T295] tc_new_tfilter (net/sched/cls_api.c:2385)
[ 15.179800][ T295] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 15.179937][ T295] ? __pfx_tc_new_tfilter (net/sched/cls_api.c:2186)
[ 15.180152][ T295] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 15.180342][ T295] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6912)
[ 15.180526][ T295] ? __pfx_tc_new_tfilter (net/sched/cls_api.c:2186)
[ 15.180854][ T295] rtnetlink_rcv_msg (net/core/rtnetlink.c:6914)
[ 15.181034][ T295] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6817)
[ 15.181215][ T295] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228)
[ 15.181393][ T295] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 15.181531][ T295] ? __lock_acquire (kernel/locking/lockdep.c:5226)
[ 15.181707][ T295] netlink_rcv_skb (net/netlink/af_netlink.c:2543)
[ 15.181887][ T295] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6817)
[ 15.182064][ T295] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2520)
[ 15.182256][ T295] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340)
[ 15.182435][ T295] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[ 15.182611][ T295] netlink_unicast (net/netlink/af_netlink.c:1322 net/netlink/af_netlink.c:1348)
[ 15.182790][ T295] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1333)
[ 15.182966][ T295] ? find_held_lock (kernel/locking/lockdep.c:5339)
[ 15.183155][ T295] netlink_sendmsg (net/netlink/af_netlink.c:1892)
[ 15.183333][ T295] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1811)
[ 15.183517][ T295] ____sys_sendmsg (net/socket.c:713 net/socket.c:728 net/socket.c:2568)
[ 15.183697][ T295] ? __pfx_____sys_sendmsg (net/socket.c:2514)
[ 15.183870][ T295] ? __pfx_copy_msghdr_from_user (net/socket.c:2494)
[ 15.184098][ T295] ___sys_sendmsg (net/socket.c:2624)
[ 15.184273][ T295] ? __debug_check_no_obj_freed (lib/debugobjects.c:1110)
[ 15.184497][ T295] ? __pfx____sys_sendmsg (net/socket.c:2611)
[ 15.184677][ T295] ? __pfx___debug_check_no_obj_freed (lib/debugobjects.c:1070)
[ 15.184891][ T295] ? __pfx_free_object_rcu (mm/kmemleak.c:514)
[ 15.185065][ T295] ? trace_rcu_segcb_stats (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:570 ./include/linux/cpumask.h:1117 ./include/trace/events/rcu.h:537)
[ 15.185251][ T295] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406)
[ 15.185472][ T295] ? kmem_cache_free (mm/slub.c:4613 mm/slub.c:4715)
[ 15.185647][ T295] ? do_sys_openat2 (fs/open.c:1405)
[ 15.185825][ T295] ? do_sys_openat2 (fs/open.c:1411)
[ 15.186008][ T295] ? do_sys_openat2 (fs/open.c:1411)
[ 15.186189][ T295] __sys_sendmsg (net/socket.c:2654)
[ 15.186370][ T295] ? __pfx___sys_sendmsg (net/socket.c:2639)
[ 15.186563][ T295] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 15.186743][ T295] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   15.186958][  T295] RIP: 0033:0x7f03ad08a9a7
[ 15.187150][ T295] Code: Unable to access opcode bytes at 0x7f03ad08a97d.

Code starting with the faulting instruction
===========================================
[   15.187375][  T295] RSP: 002b:00007ffc55f9ade8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   15.187638][  T295] RAX: ffffffffffffffda RBX: 000000000047dbc0 RCX: 00007f03ad08a9a7
[   15.187901][  T295] RDX: 0000000000000000 RSI: 00007ffc55f9ae50 RDI: 0000000000000005
[   15.188162][  T295] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
[   15.188428][  T295] R10: 00007f03acf43708 R11: 0000000000000246 R12: 00007ffc55f9f9b3
[   15.188691][  T295] R13: 0000000067859577 R14: 0000000000483b60 R15: 00007ffc55f9f9c0
| [ 15.190988][ T295] #1: ffff88800a819290 (&tp->lock){+.+.}-{3:3}, at: tc_new_tfilter (net/sched/cls_api.c:2383)
| [ 15.191256][ T295] #2: ffffffff8f1f1cd0 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_slow_inc (kernel/jump_label.c:191)
| [   15.191516][  T295] stack backtrace:
| [   15.191891][  T295] Tainted: [W]=WARN
[   15.192003][  T295] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.192188][  T295] Call Trace:
[   15.192299][  T295]  <TASK>
[ 15.192376][ T295] dump_stack_lvl (lib/dump_stack.c:123)
[ 15.192527][ T295] __lock_acquire (kernel/locking/lockdep.c:4828 kernel/locking/lockdep.c:4898 kernel/locking/lockdep.c:5176)
[ 15.192681][ T295] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851)
[ 15.192827][ T295] ? static_key_slow_inc_cpuslocked (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:1195 kernel/jump_label.c:167 kernel/jump_label.c:151)
[ 15.193016][ T295] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 15.193165][ T295] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37))
[ 15.193312][ T295] ? lock_acquire (kernel/locking/lockdep.c:5822)
[ 15.193460][ T295] ? static_key_slow_inc_cpuslocked (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:1195 kernel/jump_label.c:167 kernel/jump_label.c:151)
[ 15.193637][ T295] __mutex_lock (kernel/locking/mutex.c:587 kernel/locking/mutex.c:735)
[ 15.193790][ T295] ? static_key_slow_inc_cpuslocked (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:1195 kernel/jump_label.c:167 kernel/jump_label.c:151)
[ 15.193969][ T295] ? static_key_slow_inc_cpuslocked (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:1195 kernel/jump_label.c:167 kernel/jump_label.c:151)
[ 15.194151][ T295] ? __pfx___mutex_lock (kernel/locking/mutex.c:734)
[ 15.194299][ T295] ? static_key_slow_inc (kernel/jump_label.c:191)
[ 15.194444][ T295] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 15.194590][ T295] ? static_key_fast_inc_not_disabled (./arch/x86/include/asm/atomic.h:23 (discriminator 3) ./include/linux/atomic/atomic-arch-fallback.h:457 (discriminator 3) ./include/linux/atomic/atomic-instrumented.h:33 (discriminator 3) kernel/jump_label.c:141 (discriminator 3))
[ 15.194771][ T295] ? __pfx_static_key_fast_inc_not_disabled (kernel/jump_label.c:128)
[ 15.194960][ T295] ? static_key_slow_inc_cpuslocked (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:1195 kernel/jump_label.c:167 kernel/jump_label.c:151)
[ 15.195141][ T295] static_key_slow_inc_cpuslocked (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:1195 kernel/jump_label.c:167 kernel/jump_label.c:151)
[ 15.195325][ T295] static_key_slow_inc (kernel/jump_label.c:191)
[ 15.195472][ T295] tc_new_tfilter (net/sched/cls_api.c:2385)
[ 15.195622][ T295] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 15.195734][ T295] ? __pfx_tc_new_tfilter (net/sched/cls_api.c:2186)
[ 15.195887][ T295] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 15.196045][ T295] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6912)
[ 15.196194][ T295] ? __pfx_tc_new_tfilter (net/sched/cls_api.c:2186)
[ 15.196340][ T295] rtnetlink_rcv_msg (net/core/rtnetlink.c:6914)
[ 15.196488][ T295] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6817)
[ 15.196638][ T295] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228)
[ 15.196785][ T295] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 15.196899][ T295] ? __lock_acquire (kernel/locking/lockdep.c:5226)
[ 15.197054][ T295] netlink_rcv_skb (net/netlink/af_netlink.c:2543)
[ 15.197203][ T295] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6817)
[ 15.197350][ T295] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2520)
[ 15.197501][ T295] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340)
[ 15.197651][ T295] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[ 15.197804][ T295] netlink_unicast (net/netlink/af_netlink.c:1322 net/netlink/af_netlink.c:1348)
[ 15.198030][ T295] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1333)
[ 15.198182][ T295] ? find_held_lock (kernel/locking/lockdep.c:5339)
[ 15.198330][ T295] netlink_sendmsg (net/netlink/af_netlink.c:1892)
[ 15.198479][ T295] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1811)
[ 15.198702][ T295] ____sys_sendmsg (net/socket.c:713 net/socket.c:728 net/socket.c:2568)
[ 15.198853][ T295] ? __pfx_____sys_sendmsg (net/socket.c:2514)
[ 15.198999][ T295] ? __pfx_copy_msghdr_from_user (net/socket.c:2494)
[ 15.199258][ T295] ___sys_sendmsg (net/socket.c:2624)
[ 15.199409][ T295] ? __debug_check_no_obj_freed (lib/debugobjects.c:1110)
[ 15.199590][ T295] ? __pfx____sys_sendmsg (net/socket.c:2611)
[ 15.199736][ T295] ? __pfx___debug_check_no_obj_freed (lib/debugobjects.c:1070)
[ 15.199994][ T295] ? __pfx_free_object_rcu (mm/kmemleak.c:514)
[ 15.200139][ T295] ? trace_rcu_segcb_stats (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:570 ./include/linux/cpumask.h:1117 ./include/trace/events/rcu.h:537)
[ 15.200287][ T295] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406)
[ 15.200478][ T295] ? kmem_cache_free (mm/slub.c:4613 mm/slub.c:4715)
[ 15.200694][ T295] ? do_sys_openat2 (fs/open.c:1405)
[ 15.200839][ T295] ? do_sys_openat2 (fs/open.c:1411)
[ 15.200991][ T295] ? do_sys_openat2 (fs/open.c:1411)
[ 15.201142][ T295] __sys_sendmsg (net/socket.c:2654)
[ 15.201374][ T295] ? __pfx___sys_sendmsg (net/socket.c:2639)
[ 15.201523][ T295] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 15.201671][ T295] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   15.201928][  T295] RIP: 0033:0x7f03ad08a9a7
[ 15.202081][ T295] Code: Unable to access opcode bytes at 0x7f03ad08a97d.

Code starting with the faulting instruction
===========================================
[   15.202267][  T295] RSP: 002b:00007ffc55f9ade8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   15.202491][  T295] RAX: ffffffffffffffda RBX: 000000000047dbc0 RCX: 00007f03ad08a9a7
[   15.202785][  T295] RDX: 0000000000000000 RSI: 00007ffc55f9ae50 RDI: 0000000000000005
[   15.203010][  T295] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
[   15.203304][  T295] R10: 00007f03acf43708 R11: 0000000000000246 R12: 00007ffc55f9f9b3


Finger prints:
__lock_acquire:__mutex_lock:static_key_slow_inc_cpuslocked:static_key_slow_inc:tc_new_tfilter
__might_resched:cpus_read_lock:static_key_slow_inc:tc_new_tfilter:rtnetlink_rcv_msg