------------[ cut here ]------------
WARNING: CPU: 0 PID: 4185 at net/ipv4/af_inet.c:157 inet_sock_destruct+0x63b/0x730 net/ipv4/af_inet.c:157
Modules linked in:
CPU: 0 PID: 4185 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:inet_sock_destruct+0x63b/0x730 net/ipv4/af_inet.c:157
Code: 01 e8 69 df 03 f9 0f 0b e9 64 fe ff ff e8 5d df 03 f9 0f 0b e9 99 fe ff ff e8 51 df 03 f9 0f 0b e9 c1 fe ff ff e8 45 df 03 f9 <0f> 0b e9 e9 fe ff ff 44 89 f1 80 e1 07 fe c1 38 c1 0f 8c 5b fd ff
RSP: 0018:ffffc90000007b20 EFLAGS: 00010246
RAX: ffffffff8875418b RBX: dffffc0000000000 RCX: ffff888079a0d940
RDX: 0000000000000100 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000080000000 R08: ffff88807d78267f R09: 1ffff1100faf04cf
R10: dffffc0000000000 R11: ffffed100faf04d0 R12: ffff88807d782400
R13: ffff88807d782400 R14: ffff88807d782620 R15: 1ffff1100faf0482
FS:  000055558d31d500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f23119126b8 CR3: 0000000063cdf000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __sk_destruct+0x50/0x840 net/core/sock.c:1961
 sock_put include/net/sock.h:1989 [inline]
 sctp_endpoint_destroy_rcu+0x9d/0xe0 net/sctp/endpointola.c:193
 rcu_do_batch kernel/rcu/tree.c:2523 [inline]
 rcu_core+0x9d2/0x1670 kernel/rcu/tree.c:2763
 handle_softirqs+0x339/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:pte_pfn arch/x86/include/asm/pgtable.h:-1 [inline]
RIP: 0010:vm_normal_page+0x4c/0x1e0 mm/memory.c:608
Code: 4d 85 f6 40 0f 95 c5 4c 89 f6 48 83 e6 01 41 0f 94 c4 31 ff e8 d5 ed cb ff 41 20 ec 41 0f b6 c4 48 f7 d8 4c 31 f0 48 c1 e8 0c <49> bc ff ff ff ff ff 00 00 00 49 21 c4 4c 89 f6 48 81 e6 00 02 00
RSP: 0018:ffffc90002eaf668 EFLAGS: 00000a02
RAX: 000800000006848f RBX: 00007f231044e000 RCX: ffff888079a0d940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002eaf901 R08: ffffea0001a12387 R09: 1ffffd4000342470
R10: dffffc0000000000 R11: fffff94000342471 R12: 1ffff1100c79de00
R13: 800000006848f007 R14: 800000006848f007 R15: ffff888063ce0948
 copy_present_pte mm/memory.c:956 [inline]
 copy_pte_range mm/memory.c:1081 [inline]
 copy_pmd_range mm/memory.c:1167 [inline]
 copy_pud_range mm/memory.c:1204 [inline]
 copy_p4d_range mm/memory.c:1228 [inline]
 copy_page_range+0x11ab/0x3230 mm/memory.c:1301
 dup_mmap kernel/fork.c:615 [inline]
 dup_mm kernel/fork.c:1466 [inline]
 copy_mm+0xc86/0x13f0 kernel/fork.c:1518
 copy_process+0x17eb/0x3e20 kernel/fork.c:2290
 kernel_clone+0x23f/0x990 kernel/fork.c:2679
 __do_sys_clone kernel/fork.c:2796 [inline]
 __se_sys_clone kernel/fork.c:2780 [inline]
 __x64_sys_clone+0x19a/0x210 kernel/fork.c:2780
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2310b90952
Code: 89 e7 e8 f1 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffea4014f10 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffea4014f10 RCX: 00007f2310b90952
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffea401509c R08: 0000000000000000 R09: 0000000000000001
R10: 000055558d31d7d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000001a6b2 R15: 00007ffea40150f0
 </TASK>
----------------
Code disassembly (best guess):
   0:	4d 85 f6             	test   %r14,%r14
   3:	40 0f 95 c5          	setne  %bpl
   7:	4c 89 f6             	mov    %r14,%rsi
   a:	48 83 e6 01          	and    $0x1,%rsi
   e:	41 0f 94 c4          	sete   %r12b
  12:	31 ff                	xor    %edi,%edi
  14:	e8 d5 ed cb ff       	call   0xffcbedee
  19:	41 20 ec             	and    %bpl,%r12b
  1c:	41 0f b6 c4          	movzbl %r12b,%eax
  20:	48 f7 d8             	neg    %rax
  23:	4c 31 f0             	xor    %r14,%rax
  26:	48 c1 e8 0c          	shr    $0xc,%rax
* 2a:	49 bc ff ff ff ff ff 	movabs $0xffffffffff,%r12 <-- trapping instruction
  31:	00 00 00
  34:	49 21 c4             	and    %rax,%r12
  37:	4c 89 f6             	mov    %r14,%rsi
  3a:	48                   	rex.W
  3b:	81                   	.byte 0x81
  3c:	e6 00                	out    %al,$0x0
  3e:	02 00                	add    (%rax),%al