------------[ cut here ]------------
WARNING: CPU: 0 PID: 5693 at net/ipv4/af_inet.c:157 inet_sock_destruct+0x63b/0x730 net/ipv4/af_inet.c:157
Modules linked in:
CPU: 0 PID: 5693 Comm: syz.1.430 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:inet_sock_destruct+0x63b/0x730 net/ipv4/af_inet.c:157
Code: 01 e8 19 82 03 f9 0f 0b e9 64 fe ff ff e8 0d 82 03 f9 0f 0b e9 99 fe ff ff e8 01 82 03 f9 0f 0b e9 c1 fe ff ff e8 f5 81 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: ffffffff8875b41b RBX: dffffc0000000000 RCX: ffff888024210000
RDX: 0000000000000100 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000080000000 R08: ffff88814c874a7f R09: 1ffff1102990e94f
R10: dffffc0000000000 R11: ffffed102990e950 R12: ffff88814c874800
R13: ffff88814c874800 R14: ffff88814c874a20 R15: 1ffff1102990e902
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9bb27a4000 CR3: 00000000637c4000 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:__sanitizer_cov_trace_const_cmp8+0x0/0x80 kernel/kcov.c:301
Code: 28 4d 39 ca 77 22 89 ff 89 f6 4a c7 44 02 08 05 00 00 00 4a 89 7c 02 10 4a 89 74 02 18 4a 89 44 02 20 48 ff c1 48 89 0a c3 90 <48> 8b 04 24 65 48 8b 0d c4 35 89 7e 65 8b 15 c5 35 89 7e 81 e2 00
RSP: 0018:ffffc90003b7f500 EFLAGS: 00000246
RAX: 1ffffd40002a14a0 RBX: ffffea000150a500 RCX: ffff888024210000
RDX: 0000000000000000 RSI: 00fff00000080016 RDI: ffffffffffffffff
RBP: 00fff00000080016 R08: ffffea000150a507 R09: 1ffffd40002a14a0
R10: dffffc0000000000 R11: fffff940002a14a1 R12: ffffea000150a500
R13: ffffea000150a500 R14: ffffea000150a508 R15: ffffea000150a508
 PagePoisoned include/linux/page-flags.h:218 [inline]
 PageUnevictable include/linux/page-flags.h:424 [inline]
 activate_page mm/swap.c:331 [inline]
 mark_page_accessed+0x825/0x12b0 mm/swap.c:422
 zap_pte_range mm/memory.c:1381 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0xde9/0x2500 mm/memory.c:1576
 unmap_vmas+0x131/0x250 mm/memory.c:1653
 exit_mmap+0x3b9/0x640 mm/mmap.c:3216
 __mmput+0x115/0x3b0 kernel/fork.c:1127
 exit_mm+0x5f7/0x770 kernel/exit.c:551
 do_exit+0x5a9/0x20c0 kernel/exit.c:871
 do_group_exit+0x12e/0x300 kernel/exit.c:998
 get_signal+0x6d6/0x12d0 kernel/signal.c:2900
 arch_do_signal_or_restart+0xe7/0x12c0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3cfad75e59
Code: Unable to access opcode bytes at RIP 0x7f3cfad75e2f.
RSP: 002b:00007f3cf8fcf028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: fffffffffffffff2 RBX: 00007f3cfafeefa0 RCX: 00007f3cfad75e59
RDX: 00000000ffffff03 RSI: 0000200000000280 RDI: 0000000000000008
RBP: 00007f3cfae0bd6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3cfafef038 R14: 00007f3cfafeefa0 R15: 00007ffddb7cf828
 </TASK>
----------------
Code disassembly (best guess):
   0:	28 4d 39             	sub    %cl,0x39(%rbp)
   3:	ca 77 22             	lret   $0x2277
   6:	89 ff                	mov    %edi,%edi
   8:	89 f6                	mov    %esi,%esi
   a:	4a c7 44 02 08 05 00 	movq   $0x5,0x8(%rdx,%r8,1)
  11:	00 00
  13:	4a 89 7c 02 10       	mov    %rdi,0x10(%rdx,%r8,1)
  18:	4a 89 74 02 18       	mov    %rsi,0x18(%rdx,%r8,1)
  1d:	4a 89 44 02 20       	mov    %rax,0x20(%rdx,%r8,1)
  22:	48 ff c1             	inc    %rcx
  25:	48 89 0a             	mov    %rcx,(%rdx)
  28:	c3                   	ret
  29:	90                   	nop
* 2a:	48 8b 04 24          	mov    (%rsp),%rax <-- trapping instruction
  2e:	65 48 8b 0d c4 35 89 	mov    %gs:0x7e8935c4(%rip),%rcx        # 0x7e8935fa
  35:	7e
  36:	65 8b 15 c5 35 89 7e 	mov    %gs:0x7e8935c5(%rip),%edx        # 0x7e893602
  3d:	81                   	.byte 0x81
  3e:	e2 00                	loop   0x40