------------[ cut here ]------------
WARNING: CPU: 1 PID: 6882 at net/ipv4/af_inet.c:157 inet_sock_destruct+0x63b/0x730 net/ipv4/af_inet.c:157
Modules linked in:
CPU: 1 PID: 6882 Comm: syz.1.870 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 99 78 03 f9 0f 0b e9 64 fe ff ff e8 8d 78 03 f9 0f 0b e9 99 fe ff ff e8 81 78 03 f9 0f 0b e9 c1 fe ff ff e8 75 78 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:ffffc90000dd0b20 EFLAGS: 00010246
RAX: ffffffff8875bc1b RBX: dffffc0000000000 RCX: ffff88805684bb80
RDX: 0000000000000100 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000080000000 R08: ffff88801a5b417f R09: 1ffff110034b682f
R10: dffffc0000000000 R11: ffffed10034b6830 R12: ffff88801a5b3f00
R13: ffff88801a5b3f00 R14: ffff88801a5b4120 R15: 1ffff110034b67e2
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32422ff8 CR3: 000000004e749000 CR4: 00000000003506e0
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:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:205
Code: 84 00 00 00 00 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 10 be 10 0c 48 89 de 5b e9 27 55 44 00 00 00 cc cc 00 00 cc 48 8b 04 24 <65> 48 8b 0d 24 3b 89 7e 65 8b 15 25 3b 89 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc900033cf520 EFLAGS: 00000297
RAX: ffffffff81ad4f15 RBX: 00007f6f235ba000 RCX: ffff88805684bb80
RDX: 0000000000000000 RSI: 000000000023ffff RDI: 0000000000064739
RBP: ffffc900033cf601 R08: ffff88805684bb87 R09: 1ffff1100ad09770
R10: dffffc0000000000 R11: ffffed100ad09771 R12: 0000000000064739
R13: 000000000023ffff R14: 8000000064739007 R15: ffff88807531ed68
 vm_normal_page+0x95/0x1e0 mm/memory.c:657
 zap_pte_range mm/memory.c:1357 [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+0xa6a/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+0x588/0x6e0 kernel/exit.c:550
 do_exit+0x5a9/0x20c0 kernel/exit.c:870
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 get_signal+0x6ca/0x12c0 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: 0033:0x7f6f247ccdd9
Code: Unable to access opcode bytes at RIP 0x7f6f247ccdaf.
RSP: 002b:00007f6f22a26028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: fffffffffffffff2 RBX: 00007f6f24a45fa0 RCX: 00007f6f247ccdd9
RDX: 00000000ffffff03 RSI: 0000200000000280 RDI: 0000000000000008
RBP: 00007f6f24862d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6f24a46038 R14: 00007f6f24a45fa0 R15: 00007fff6fb1a748
 </TASK>
----------------
Code disassembly (best guess):
   0:	84 00                	test   %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	53                   	push   %rbx
   7:	48 89 fb             	mov    %rdi,%rbx
   a:	e8 17 00 00 00       	call   0x26
   f:	48 8b 3d 10 be 10 0c 	mov    0xc10be10(%rip),%rdi        # 0xc10be26
  16:	48 89 de             	mov    %rbx,%rsi
  19:	5b                   	pop    %rbx
  1a:	e9 27 55 44 00       	jmp    0x445546
  1f:	00 00                	add    %al,(%rax)
  21:	cc                   	int3
  22:	cc                   	int3
  23:	00 00                	add    %al,(%rax)
  25:	cc                   	int3
  26:	48 8b 04 24          	mov    (%rsp),%rax
* 2a:	65 48 8b 0d 24 3b 89 	mov    %gs:0x7e893b24(%rip),%rcx        # 0x7e893b56 <-- trapping instruction
  31:	7e
  32:	65 8b 15 25 3b 89 7e 	mov    %gs:0x7e893b25(%rip),%edx        # 0x7e893b5e
  39:	81 e2 00 01 ff 00    	and    $0xff0100,%edx
  3f:	74                   	.byte 0x74