------------[ cut here ]------------
WARNING: CPU: 1 PID: 6706 at net/ipv4/af_inet.c:157 inet_sock_destruct+0x63b/0x730 net/ipv4/af_inet.c:157
Modules linked in:
CPU: 1 PID: 6706 Comm: syz.8.737 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:inet_sock_destruct+0x63b/0x730 net/ipv4/af_inet.c:157
Code: 01 e8 49 b7 03 f9 0f 0b e9 64 fe ff ff e8 3d b7 03 f9 0f 0b e9 99 fe ff ff e8 31 b7 03 f9 0f 0b e9 c1 fe ff ff e8 25 b7 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: ffffffff887569eb RBX: dffffc0000000000 RCX: ffff888028c01dc0
RDX: 0000000000000100 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000080000000 R08: ffff88806274ee7f R09: 1ffff1100c4e9dcf
R10: dffffc0000000000 R11: ffffed100c4e9dd0 R12: ffff88806274ec00
R13: ffff88806274ec00 R14: ffff88806274ee20 R15: 1ffff1100c4e9d82
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32823ffc CR3: 000000004dba4000 CR4: 00000000003506e0
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:orc_find arch/x86/kernel/unwind_orc.c:168 [inline]
RIP: 0010:unwind_next_frame+0x1be/0x1d90 arch/x86/kernel/unwind_orc.c:448
Code: 08 8b 15 25 11 ae 0a 8d 42 ff 44 39 f0 0f 86 f5 14 00 00 44 89 f0 4c 8d 24 85 d0 6f 9d 8e 4c 89 e0 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 8b 16 00 00 45 8b 24 24 44 89 f0 ff c0 4c 8d 3c 85 d0
RSP: 0018:ffffc9000356f628 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffffc9000356f6e8 RCX: ffffffff962daf00
RDX: 000000000009007f RSI: ffffffff81679c46 RDI: ffffffff81350d2c
RBP: ffffffff81679c45 R08: ffffc9000356f7b0 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff520006adee9 R12: ffffffff8e9f0e40
R13: dffffc0000000000 R14: 000000000000679c R15: ffffc9000356f730
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 save_stack+0x121/0x230 mm/page_owner.c:119
 __reset_page_owner+0x51/0x180 mm/page_owner.c:140
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x8f/0x2a0 mm/page_alloc.c:3396
 tlb_batch_list_free mm/mmu_gather.c:61 [inline]
 tlb_finish_mmu+0x24d/0x300 mm/mmu_gather.c:341
 exit_mmap+0x3d0/0x640 mm/mmap.c:3218
 __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
 __do_sys_exit_group kernel/exit.c:1008 [inline]
 __se_sys_exit_group kernel/exit.c:1006 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006
 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: 0033:0x7f4ab6964819
Code: Unable to access opcode bytes at RIP 0x7f4ab69647ef.
RSP: 002b:00007fff82d724e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4ab6964819
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fff82d7254c R08: 0000000000000000 R09: 00000000000927c0
R10: 00007f4ab6bde038 R11: 0000000000000246 R12: 0000000000000011
R13: 00000000000927c0 R14: 000000000002b68d R15: 00007fff82d725a0
 </TASK>
----------------
Code disassembly (best guess):
   0:	08 8b 15 25 11 ae    	or     %cl,-0x51eedaeb(%rbx)
   6:	0a 8d 42 ff 44 39    	or     0x3944ff42(%rbp),%cl
   c:	f0 0f 86 f5 14 00 00 	lock jbe 0x1508
  13:	44 89 f0             	mov    %r14d,%eax
  16:	4c 8d 24 85 d0 6f 9d 	lea    -0x71629030(,%rax,4),%r12
  1d:	8e
  1e:	4c 89 e0             	mov    %r12,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
* 2a:	84 c0                	test   %al,%al <-- trapping instruction
  2c:	0f 85 8b 16 00 00    	jne    0x16bd
  32:	45 8b 24 24          	mov    (%r12),%r12d
  36:	44 89 f0             	mov    %r14d,%eax
  39:	ff c0                	inc    %eax
  3b:	4c                   	rex.WR
  3c:	8d                   	.byte 0x8d
  3d:	3c 85                	cmp    $0x85,%al
  3f:	d0                   	.byte 0xd0