------------[ cut here ]------------
sk->sk_forward_alloc
WARNING: net/ipv4/af_inet.c:162 at inet_sock_destruct+0x62d/0x740 net/ipv4/af_inet.c:162, CPU#0: modprobe/10183
Modules linked in:
CPU: 0 UID: 0 PID: 10183 Comm: modprobe Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:inet_sock_destruct+0x62d/0x740 net/ipv4/af_inet.c:162
Code: 0f 0b 90 e9 58 fe ff ff e8 30 1c 9e f7 90 0f 0b 90 e9 8b fe ff ff e8 22 1c 9e f7 90 0f 0b 90 e9 b1 fe ff ff e8 14 1c 9e 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:ffffc90000007d20 EFLAGS: 00010246
RAX: ffffffff8a27a84c RBX: dffffc0000000000 RCX: ffff888029a4dc40
RDX: 0000000000000100 RSI: 0000000000000f70 RDI: 0000000000000000
RBP: 0000000000000f70 R08: ffff88802af7c6a7 R09: 1ffff110055ef8d4
R10: dffffc0000000000 R11: ffffed10055ef8d5 R12: ffff88802af7c400
R13: ffff88802af7c908 R14: ffff88802af7c68c R15: ffffffff8feb1a40
FS:  0000000000000000(0000) GS:ffff88812527a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdc972bae9c CR3: 000000000e74a000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __sk_destruct+0x8d/0x9d0 net/core/sock.c:2352
 rcu_do_batch kernel/rcu/tree.c:2617 [inline]
 rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
 handle_softirqs+0x22a/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:1061 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x17/0x70 kernel/kcov.c:217
Code: cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0d 98 9b 74 11 65 8b 15 b9 9b 74 11 <81> e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 d4 16 00 00
RSP: 0018:ffffc9000d337598 EFLAGS: 00000246
RAX: ffffffff821635ae RBX: ffff88807bbf28d0 RCX: ffff888029a4dc40
RDX: 0000000080000001 RSI: 00007fdc9731a000 RDI: ffff88804e486500
RBP: ffffc9000d3378d0 R08: ffffea00004cd433 R09: 1ffffd4000099a86
R10: dffffc0000000000 R11: fffff94000099a87 R12: ffff88803483bd40
R13: ffff88804e486500 R14: ffffc9000d337ac0 R15: 800000001334f025
 vm_normal_page+0x1e/0x280 mm/memory.c:753
 zap_present_ptes mm/memory.c:1684 [inline]
 do_zap_pte_range mm/memory.c:1816 [inline]
 zap_pte_range mm/memory.c:1918 [inline]
 zap_pmd_range mm/memory.c:2004 [inline]
 zap_pud_range mm/memory.c:2032 [inline]
 zap_p4d_range mm/memory.c:2053 [inline]
 __zap_vma_range+0x1098/0x4b40 mm/memory.c:2093
 unmap_vmas+0x379/0x530 mm/memory.c:2162
 exit_mmap+0x280/0x9e0 mm/mmap.c:1300
 __mmput+0x118/0x430 kernel/fork.c:1178
 exit_mm+0x1f6/0x2d0 kernel/exit.c:582
 do_exit+0x6a2/0x22c0 kernel/exit.c:964
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1119
 __do_sys_exit_group kernel/exit.c:1130 [inline]
 __se_sys_exit_group kernel/exit.c:1128 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1128
 x64_sys_call+0x221a/0x2240 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdc974196c5
Code: Unable to access opcode bytes at 0x7fdc9741969b.
RSP: 002b:00007ffede8ef948 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fdc9751afe8 RCX: 00007fdc974196c5
RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000001
RBP: 0000000000000001 R08: 00007ffede8ef8d8 R09: 0000000000000000
R10: 00007ffede8ef770 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fdc97519680 R15: 00007fdc9751b000
 </TASK>
----------------
Code disassembly (best guess):
   0:	cc                   	int3
   1:	cc                   	int3
   2:	cc                   	int3
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	f3 0f 1e fa          	endbr64
  17:	48 8b 04 24          	mov    (%rsp),%rax
  1b:	65 48 8b 0d 98 9b 74 	mov    %gs:0x11749b98(%rip),%rcx        # 0x11749bbb
  22:	11
  23:	65 8b 15 b9 9b 74 11 	mov    %gs:0x11749bb9(%rip),%edx        # 0x11749be3
* 2a:	81 e2 00 01 ff 00    	and    $0xff0100,%edx <-- trapping instruction
  30:	74 11                	je     0x43
  32:	81 fa 00 01 00 00    	cmp    $0x100,%edx
  38:	75 35                	jne    0x6f
  3a:	83                   	.byte 0x83
  3b:	b9 d4 16 00 00       	mov    $0x16d4,%ecx