------------[ cut here ]------------
sk->sk_forward_alloc
WARNING: net/ipv4/af_inet.c:162 at inet_sock_destruct+0x62b/0x740 net/ipv4/af_inet.c:162, CPU#1: syz.2.11227/14509
Modules linked in:
CPU: 1 UID: 0 PID: 14509 Comm: syz.2.11227 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:inet_sock_destruct+0x62b/0x740 net/ipv4/af_inet.c:162
Code: 0f 0b 90 e9 58 fe ff ff e8 42 e2 a0 f7 90 0f 0b 90 e9 8b fe ff ff e8 34 e2 a0 f7 90 0f 0b 90 e9 b1 fe ff ff e8 26 e2 a0 f7 90 <0f> 0b 90 e9 d7 fe ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 95 fc
RSP: 0018:ffffc90000a08d28 EFLAGS: 00010246
RAX: ffffffff8a2513fa RBX: dffffc0000000000 RCX: ffff88802db31f00
RDX: 0000000000000100 RSI: 0000000000000f70 RDI: 0000000000000000
RBP: 0000000000000f70 R08: ffff8880a79202a7 R09: 1ffff11014f24054
R10: dffffc0000000000 R11: ffffed1014f24055 R12: ffff8880a7920000
R13: dffffc0000000000 R14: ffff8880a792028c R15: ffffffff8feb2680
FS:  00007fa6385776c0(0000) GS:ffff88812537c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffb1825878 CR3: 000000002a098000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __sk_destruct+0x89/0x9d0 net/core/sock.c:2357
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core+0x78b/0x10a0 kernel/rcu/tree.c:2897
 handle_softirqs+0x225/0x840 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:console_flush_one_record arch/x86/include/asm/irqflags.h:-1 [inline]
RIP: 0010:console_flush_all+0x7d2/0xaf0 kernel/printk/printk.c:3343
Code: ff ff e8 81 15 21 00 90 0f 0b 90 e9 9c fc ff ff e8 73 15 21 00 e8 5e f4 02 0a 48 85 db 74 c0 e8 64 15 21 00 fb 48 8b 5c 24 18 <48> 8b 44 24 28 42 80 3c 20 00 4d 8d 77 58 74 08 4c 89 f7 e8 e6 69
RSP: 0018:ffffc9000d656620 EFLAGS: 00000287
RAX: ffffffff81a4e0bc RBX: ffffc9000d656780 RCX: 0000000000080000
RDX: ffffc90020201000 RSI: 0000000000002dcb RDI: 0000000000002dcc
RBP: ffffc9000d656730 R08: ffffffff903117f7 R09: 1ffffffff20622fe
R10: dffffc0000000000 R11: fffffbfff20622ff R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffff8f226540
 __console_flush_and_unlock kernel/printk/printk.c:3373 [inline]
 console_unlock+0xd1/0x1c0 kernel/printk/printk.c:3413
 vprintk_emit+0x485/0x560 kernel/printk/printk.c:2479
 _printk+0xdd/0x130 kernel/printk/printk.c:2504
 netdev_info+0x11e/0x180 net/core/dev.c:13011
 __dev_set_promiscuity+0x2d5/0x6e0 net/core/dev.c:9614
 __dev_change_flags+0x53e/0x820 net/core/dev.c:9763
 netif_change_flags+0x7c/0x1b0 net/core/dev.c:9817
 do_setlink+0xdd6/0x4670 net/core/rtnetlink.c:3215
 rtnl_changelink net/core/rtnetlink.c:3849 [inline]
 __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
 rtnl_newlink+0x15c2/0x1bd0 net/core/rtnetlink.c:4159
 rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec net/socket.c:775 [inline]
 __sock_sendmsg net/socket.c:790 [inline]
 ____sys_sendmsg+0x9b9/0xa20 net/socket.c:2684
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2738
 __sys_sendmsg net/socket.c:2770 [inline]
 __do_sys_sendmsg net/socket.c:2775 [inline]
 __se_sys_sendmsg net/socket.c:2773 [inline]
 __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa63779ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa638577028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa637a16090 RCX: 00007fa63779ce59
RDX: 0000000000008080 RSI: 0000200000000000 RDI: 0000000000000006
RBP: 00007fa637832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa637a16128 R14: 00007fa637a16090 R15: 00007fff6decfa88
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	ff                   	ljmp   (bad)
   1:	e8 81 15 21 00       	call   0x211587
   6:	90                   	nop
   7:	0f 0b                	ud2
   9:	90                   	nop
   a:	e9 9c fc ff ff       	jmp    0xfffffcab
   f:	e8 73 15 21 00       	call   0x211587
  14:	e8 5e f4 02 0a       	call   0xa02f477
  19:	48 85 db             	test   %rbx,%rbx
  1c:	74 c0                	je     0xffffffde
  1e:	e8 64 15 21 00       	call   0x211587
  23:	fb                   	sti
  24:	48 8b 5c 24 18       	mov    0x18(%rsp),%rbx
* 29:	48 8b 44 24 28       	mov    0x28(%rsp),%rax <-- trapping instruction
  2e:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  33:	4d 8d 77 58          	lea    0x58(%r15),%r14
  37:	74 08                	je     0x41
  39:	4c 89 f7             	mov    %r14,%rdi
  3c:	e8                   	.byte 0xe8
  3d:	e6 69                	out    %al,$0x69