[  337.957029] ------------[ cut here ]------------
[  337.957696] kvfree_call_rcu(): Double-freed call. rcu_head ffff888008a7a638
[  337.961920] WARNING: CPU: 0 PID: 171 at kernel/rcu/tree.c:3361 kvfree_call_rcu (/home/petr/src/linux_mlxsw/kernel/rcu/tree.c:3361 (discriminator 1)) 
[  337.963725] Modules linked in: sch_ingress veth
[  337.964797] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc38 04/01/2014
[  337.965437] RIP: 0010:kvfree_call_rcu (/home/petr/src/linux_mlxsw/kernel/rcu/tree.c:3361 (discriminator 1)) 
[ 337.965764] Code: 00 00 00 e8 2a 4c e8 ff e9 35 01 00 00 4c 89 e2 48 c7 c6 a0 07 4e 83 48 c7 c7 40 df 4d 83 c6 05 29 35 07 03 01 e8 28 7c e0 ff <0f> 0b e9 db fa ff ff 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 08
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 e8                	add    %ch,%al
   4:	2a 4c e8 ff          	sub    -0x1(%rax,%rbp,8),%cl
   8:	e9 35 01 00 00       	jmp    0x142
   d:	4c 89 e2             	mov    %r12,%rdx
  10:	48 c7 c6 a0 07 4e 83 	mov    $0xffffffff834e07a0,%rsi
  17:	48 c7 c7 40 df 4d 83 	mov    $0xffffffff834ddf40,%rdi
  1e:	c6 05 29 35 07 03 01 	movb   $0x1,0x3073529(%rip)        # 0x307354e
  25:	e8 28 7c e0 ff       	call   0xffffffffffe07c52
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	e9 db fa ff ff       	jmp    0xfffffffffffffb0c
  31:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  38:	fc ff df 
  3b:	49 8d 7c 24 08       	lea    0x8(%r12),%rdi

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	e9 db fa ff ff       	jmp    0xfffffffffffffae2
   7:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   e:	fc ff df 
  11:	49 8d 7c 24 08       	lea    0x8(%r12),%rdi
[  337.966903] RSP: 0000:ffffc9000009f328 EFLAGS: 00010286
[  337.967220] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[  337.967645] RDX: ffff88800c8c9fc0 RSI: ffffffff813f13cb RDI: 0000000000000001
[  337.968049] RBP: ffff888008a7a000 R08: 0000000000000001 R09: 0000000000000000
[  337.968474] R10: 0000000000000001 R11: 0000000000000001 R12: ffff888008a7a638
[  337.968879] R13: ffff888008a7a208 R14: ffff888008a7a008 R15: 0000000000000002
[  337.969302] FS:  00007f0089130740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  337.969759] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  337.970091] CR2: 00007fd15cc3d000 CR3: 000000000c0af001 CR4: 0000000000370ef0
[  337.970515] Call Trace:
[  337.970670]  <TASK>
[  337.970806] ? __warn (/home/petr/src/linux_mlxsw/kernel/panic.c:673) 
[  337.971008] ? kvfree_call_rcu (/home/petr/src/linux_mlxsw/kernel/rcu/tree.c:3361 (discriminator 1)) 
[  337.971279] ? report_bug (/home/petr/src/linux_mlxsw/lib/bug.c:180 /home/petr/src/linux_mlxsw/lib/bug.c:219) 
[  337.971519] ? handle_bug (/home/petr/src/linux_mlxsw/arch/x86/kernel/traps.c:324 (discriminator 1)) 
[  337.971738] ? exc_invalid_op (/home/petr/src/linux_mlxsw/arch/x86/kernel/traps.c:345 (discriminator 1)) 
[  337.971973] ? asm_exc_invalid_op (/home/petr/src/linux_mlxsw/./arch/x86/include/asm/idtentry.h:568) 
[  337.972261] ? __warn_printk (/home/petr/src/linux_mlxsw/kernel/panic.c:712) 
[  337.972501] ? kvfree_call_rcu (/home/petr/src/linux_mlxsw/kernel/rcu/tree.c:3361 (discriminator 1)) 
[  337.972750] ? kvfree_call_rcu (/home/petr/src/linux_mlxsw/kernel/rcu/tree.c:3361 (discriminator 1)) 
[  337.972997] ? __tcf_block_put (/home/petr/src/linux_mlxsw/net/sched/cls_api.c:535 /home/petr/src/linux_mlxsw/net/sched/cls_api.c:530 /home/petr/src/linux_mlxsw/net/sched/cls_api.c:1301) 
[  337.973276] ingress_destroy (/home/petr/src/linux_mlxsw/net/sched/sch_ingress.c:131) sch_ingress
[  337.973591] ? clsact_init (/home/petr/src/linux_mlxsw/net/sched/sch_ingress.c:113) sch_ingress
[  337.973892] __qdisc_destroy (/home/petr/src/linux_mlxsw/net/sched/sch_generic.c:1065) 
[  337.974128] qdisc_destroy (/home/petr/src/linux_mlxsw/net/sched/sch_generic.c:1079) 
[  337.974371] qdisc_graft (/home/petr/src/linux_mlxsw/net/sched/sch_api.c:1134) 
[  337.974612] ? tc_dump_tclass (/home/petr/src/linux_mlxsw/net/sched/sch_api.c:1076) 
[  337.974873] tc_get_qdisc (/home/petr/src/linux_mlxsw/net/sched/sch_api.c:1541) 
[  337.975106] ? tc_ctl_tclass (/home/petr/src/linux_mlxsw/net/sched/sch_api.c:1475) 
[  337.975363] ? rtnetlink_rcv_msg (/home/petr/src/linux_mlxsw/net/core/rtnetlink.c:6421) 
[  337.975645] ? cap_capable (/home/petr/src/linux_mlxsw/security/commoncap.c:102) 
[  337.975883] ? lock_is_held_type (/home/petr/src/linux_mlxsw/kernel/locking/lockdep.c:467 (discriminator 4) /home/petr/src/linux_mlxsw/kernel/locking/lockdep.c:5833 (discriminator 4)) 
[  337.976137] ? tc_ctl_tclass (/home/petr/src/linux_mlxsw/net/sched/sch_api.c:1475) 
[  337.976398] rtnetlink_rcv_msg (/home/petr/src/linux_mlxsw/net/core/rtnetlink.c:6423) 
[  337.976653] ? rtnl_dump_ifinfo (/home/petr/src/linux_mlxsw/net/core/rtnetlink.c:6319) 
[  337.976915] ? lockdep_hardirqs_on_prepare (/home/petr/src/linux_mlxsw/kernel/locking/lockdep.c:5000) 
[  337.977243] ? lockdep_hardirqs_on_prepare (/home/petr/src/linux_mlxsw/kernel/locking/lockdep.c:5000) 
[  337.977548] ? find_held_lock (/home/petr/src/linux_mlxsw/kernel/locking/lockdep.c:5251 (discriminator 1)) 
[  337.977799] netlink_rcv_skb (/home/petr/src/linux_mlxsw/net/netlink/af_netlink.c:2547) 
[  337.978041] ? rtnl_dump_ifinfo (/home/petr/src/linux_mlxsw/net/core/rtnetlink.c:6319) 
[  337.978331] ? netlink_ack (/home/petr/src/linux_mlxsw/net/netlink/af_netlink.c:2523) 
[  337.978583] ? lock_sync (/home/petr/src/linux_mlxsw/kernel/locking/lockdep.c:5729) 
[  337.978833] ? netlink_deliver_tap (/home/petr/src/linux_mlxsw/./include/linux/rcupdate.h:308 /home/petr/src/linux_mlxsw/./include/linux/rcupdate.h:782 /home/petr/src/linux_mlxsw/net/netlink/af_netlink.c:340) 
[  337.979103] ? is_vmalloc_addr (/home/petr/src/linux_mlxsw/mm/vmalloc.c:83) 
[  337.979376] netlink_unicast (/home/petr/src/linux_mlxsw/net/netlink/af_netlink.c:1340 /home/petr/src/linux_mlxsw/net/netlink/af_netlink.c:1365) 
[  337.979668] ? netlink_attachskb (/home/petr/src/linux_mlxsw/net/netlink/af_netlink.c:1350) 
[  337.979933] ? __sanitizer_cov_trace_switch (/home/petr/src/linux_mlxsw/kernel/kcov.c:340 (discriminator 1)) 
[  337.980307] ? __check_object_size (/home/petr/src/linux_mlxsw/mm/usercopy.c:113 /home/petr/src/linux_mlxsw/mm/usercopy.c:145 /home/petr/src/linux_mlxsw/mm/usercopy.c:254 /home/petr/src/linux_mlxsw/mm/usercopy.c:213) 
[  337.980608] netlink_sendmsg (/home/petr/src/linux_mlxsw/net/netlink/af_netlink.c:1911) 
[  337.980861] ? netlink_unicast (/home/petr/src/linux_mlxsw/net/netlink/af_netlink.c:1830) 
[  337.981124] ? netlink_unicast (/home/petr/src/linux_mlxsw/net/netlink/af_netlink.c:1830) 
[  337.981406] ____sys_sendmsg (/home/petr/src/linux_mlxsw/net/socket.c:728 (discriminator 1) /home/petr/src/linux_mlxsw/net/socket.c:748 (discriminator 1) /home/petr/src/linux_mlxsw/net/socket.c:2494 (discriminator 1)) 
[  337.981654] ? copy_msghdr_from_user (/home/petr/src/linux_mlxsw/net/socket.c:2420) 
[  337.981944] ? sock_read_iter (/home/petr/src/linux_mlxsw/net/socket.c:2440) 
[  337.982202] ? __lock_acquire (/home/petr/src/linux_mlxsw/./arch/x86/include/asm/bitops.h:228 /home/petr/src/linux_mlxsw/./arch/x86/include/asm/bitops.h:240 /home/petr/src/linux_mlxsw/./include/asm-generic/bitops/instrumented-non-atomic.h:142 /home/petr/src/linux_mlxsw/kernel/locking/lockdep.c:228 /home/petr/src/linux_mlxsw/kernel/locking/lockdep.c:3788 /home/petr/src/linux_mlxsw/kernel/locking/lockdep.c:3844 /home/petr/src/linux_mlxsw/kernel/locking/lockdep.c:5144) 
[  337.982486] ___sys_sendmsg (/home/petr/src/linux_mlxsw/net/socket.c:2550) 
[  337.982734] ? do_recvmmsg (/home/petr/src/linux_mlxsw/net/socket.c:2537) 
[  337.983010] ? local_clock_noinstr (/home/petr/src/linux_mlxsw/kernel/sched/clock.c:301 (discriminator 1)) 
[  337.983299] ? __fget_light (/home/petr/src/linux_mlxsw/fs/file.c:1027) 
[  337.983549] __sys_sendmsg (/home/petr/src/linux_mlxsw/net/socket.c:2579) 
[  337.983782] ? __sys_sendmsg_sock (/home/petr/src/linux_mlxsw/net/socket.c:2565) 
[  337.984043] ? xfd_validate_state (/home/petr/src/linux_mlxsw/arch/x86/kernel/fpu/xstate.c:1411 /home/petr/src/linux_mlxsw/arch/x86/kernel/fpu/xstate.c:1455) 
[  337.984352] ? syscall_enter_from_user_mode (/home/petr/src/linux_mlxsw/./arch/x86/include/asm/irqflags.h:42 /home/petr/src/linux_mlxsw/./arch/x86/include/asm/irqflags.h:77 /home/petr/src/linux_mlxsw/kernel/entry/common.c:111) 
[  337.984667] do_syscall_64 (/home/petr/src/linux_mlxsw/arch/x86/entry/common.c:50 (discriminator 1) /home/petr/src/linux_mlxsw/arch/x86/entry/common.c:80 (discriminator 1)) 
[  337.984894] entry_SYSCALL_64_after_hwframe (/home/petr/src/linux_mlxsw/arch/x86/entry/entry_64.S:120) 
[  337.985202] RIP: 0033:0x7f008946a8b4
[ 337.985437] Code: 15 59 f5 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b5 0f 1f 00 f3 0f 1e fa 80 3d 2d 7d 0c 00 00 74 13 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 4c c3 0f 1f 00 55 48 89 e5 48 83 ec 20 89 55
All code
========
   0:	15 59 f5 0b 00       	adc    $0xbf559,%eax
   5:	f7 d8                	neg    %eax
   7:	64 89 02             	mov    %eax,%fs:(%rdx)
   a:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
  11:	eb b5                	jmp    0xffffffffffffffc8
  13:	0f 1f 00             	nopl   (%rax)
  16:	f3 0f 1e fa          	endbr64
  1a:	80 3d 2d 7d 0c 00 00 	cmpb   $0x0,0xc7d2d(%rip)        # 0xc7d4e
  21:	74 13                	je     0x36
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 4c                	ja     0x7e
  32:	c3                   	ret
  33:	0f 1f 00             	nopl   (%rax)
  36:	55                   	push   %rbp
  37:	48 89 e5             	mov    %rsp,%rbp
  3a:	48 83 ec 20          	sub    $0x20,%rsp
  3e:	89                   	.byte 0x89
  3f:	55                   	push   %rbp

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 4c                	ja     0x54
   8:	c3                   	ret
   9:	0f 1f 00             	nopl   (%rax)
   c:	55                   	push   %rbp
   d:	48 89 e5             	mov    %rsp,%rbp
  10:	48 83 ec 20          	sub    $0x20,%rsp
  14:	89                   	.byte 0x89
  15:	55                   	push   %rbp
[  337.986472] RSP: 002b:00007ffd615b18c8 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[  337.986905] RAX: ffffffffffffffda RBX: 000055958cf26f80 RCX: 00007f008946a8b4
[  337.987324] RDX: 0000000000000000 RSI: 00007ffd615b1940 RDI: 0000000000000003
[  337.987730] RBP: 00007ffd615b19b0 R08: 0000000064bab34a R09: 0000000000000001
[  337.988146] R10: 0000000000000001 R11: 0000000000000202 R12: 00007ffd615b1a30
[  337.988585] R13: 0000000064bab34b R14: 000055958cf26f80 R15: 0000000000000000
[  337.989023]  </TASK>
[  337.989171] irq event stamp: 168885
[  337.989399] hardirqs last enabled at (168895): __up_console_sem (/home/petr/src/linux_mlxsw/./arch/x86/include/asm/irqflags.h:42 /home/petr/src/linux_mlxsw/./arch/x86/include/asm/irqflags.h:77 /home/petr/src/linux_mlxsw/./arch/x86/include/asm/irqflags.h:135 /home/petr/src/linux_mlxsw/kernel/printk/printk.c:347 /home/petr/src/linux_mlxsw/kernel/printk/printk.c:339) 
[  337.989908] hardirqs last disabled at (168902): __up_console_sem (/home/petr/src/linux_mlxsw/kernel/printk/printk.c:345 (discriminator 3)) 
[  337.990424] softirqs last enabled at (168216): irq_exit_rcu (/home/petr/src/linux_mlxsw/kernel/softirq.c:427 /home/petr/src/linux_mlxsw/kernel/softirq.c:632 /home/petr/src/linux_mlxsw/kernel/softirq.c:644) 
[  337.990951] softirqs last disabled at (168207): irq_exit_rcu (/home/petr/src/linux_mlxsw/kernel/softirq.c:427 /home/petr/src/linux_mlxsw/kernel/softirq.c:632 /home/petr/src/linux_mlxsw/kernel/softirq.c:644) 
[  337.991830] ---[ end trace 0000000000000000 ]---