non-slab/vmalloc memory
list_del corruption. prev->next should be ffff88805f7a0f00, but was ffffffff8fb66fc0. (prev=ffffffff8fb66fc0)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 2 UID: 0 PID: 10184 Comm: syz.3.722 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__list_del_entry_valid_or_report+0x14a/0x1d0 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 c0 fa 1a 8c e8 27 b1 26 fc 90 <0f> 0b 4c 89 e7 e8 4c ea 52 fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc90007536f08 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff88805f7a0f00 RCX: 0000000000000000
RDX: 000000000000006d RSI: ffffffff81e71769 RDI: fffff52000ea6dd2
RBP: ffffffff8fb66fc0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: ffffffff8fb66fc0
R13: 0000000000000001 R14: ffffc90007536fe0 R15: ffffc90007536fe0
FS:  0000000000000000(0000) GS:ffff88809734e000(0063) knlGS:00000000f544cb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080f65018 CR3: 00000000534ee000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del include/linux/list.h:237 [inline]
 flow_block_cb_setup_simple+0x36e/0xa20 net/core/flow_offload.c:367
 nsim_setup_tc+0x115/0x150 drivers/net/netdevsim/netdev.c:374
 nft_block_offload_cmd+0x144/0x2f0 net/netfilter/nf_tables_offload.c:397
 nft_chain_offload_cmd net/netfilter/nf_tables_offload.c:451 [inline]
 nft_flow_block_chain+0x175/0x4b0 net/netfilter/nf_tables_offload.c:471
 nft_flow_offload_chain net/netfilter/nf_tables_offload.c:513 [inline]
 nft_flow_rule_offload_commit+0x181/0x6a0 net/netfilter/nf_tables_offload.c:592
 nf_tables_commit+0x5f0/0x8ae0 net/netfilter/nf_tables_api.c:10841
 nfnetlink_rcv_batch+0x1a57/0x2880 net/netfilter/nfnetlink.c:576
 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:649 [inline]
 nfnetlink_rcv+0x3bd/0x440 net/netfilter/nfnetlink.c:667
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 ____sys_sendmsg+0xa54/0xc30 net/socket.c:2592
 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2646
 __sys_sendmsg+0x170/0x220 net/socket.c:2678
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xe3/0x8c0 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:332
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf707ef6c
Code: d2 74 05 c1 e8 0c 89 02 8b 5d fc 31 c0 c9 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 58 b8 77 00 00 00 cd 80 0f 0b 8d b6 00 00 00 00 b8 ad
RSP: 002b:00000000f544c50c EFLAGS: 00000292 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000080000cc0
RDX: 000000000000c050 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x14a/0x1d0 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 c0 fa 1a 8c e8 27 b1 26 fc 90 <0f> 0b 4c 89 e7 e8 4c ea 52 fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc90007536f08 EFLAGS: 00010282
RAX: 000000000000006d RBX: ffff88805f7a0f00 RCX: 0000000000000000
RDX: 000000000000006d RSI: ffffffff81e71769 RDI: fffff52000ea6dd2
RBP: ffffffff8fb66fc0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: ffffffff8fb66fc0
R13: 0000000000000001 R14: ffffc90007536fe0 R15: ffffc90007536fe0
FS:  0000000000000000(0000) GS:ffff88809734e000(0063) knlGS:00000000f544cb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080f65018 CR3: 00000000534ee000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	d2 74 05 c1          	shlb   %cl,-0x3f(%rbp,%rax,1)
   4:	e8 0c 89 02 8b       	call   0x8b028915
   9:	5d                   	pop    %rbp
   a:	fc                   	cld
   b:	31 c0                	xor    %eax,%eax
   d:	c9                   	leave
   e:	c3                   	ret
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	0f 1f 00             	nopl   (%rax)
  21:	51                   	push   %rcx
  22:	52                   	push   %rdx
  23:	55                   	push   %rbp
  24:	89 e5                	mov    %esp,%ebp
  26:	0f 34                	sysenter
  28:	cd 80                	int    $0x80
* 2a:	5d                   	pop    %rbp <-- trapping instruction
  2b:	5a                   	pop    %rdx
  2c:	59                   	pop    %rcx
  2d:	c3                   	ret
  2e:	58                   	pop    %rax
  2f:	b8 77 00 00 00       	mov    $0x77,%eax
  34:	cd 80                	int    $0x80
  36:	0f 0b                	ud2
  38:	8d b6 00 00 00 00    	lea    0x0(%rsi),%esi
  3e:	b8                   	.byte 0xb8
  3f:	ad                   	lods   %ds:(%rsi),%eax