------------[ cut here ]------------
WARNING: CPU: 0 PID: 9062 at net/ipv4/ipmr.c:2302 ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302
Modules linked in:
CPU: 0 UID: 0 PID: 9062 Comm: syz.3.857 Not tainted 6.16.0-rc2-syzkaller-00623-g14966a8df77e #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302
Code: df e9 63 f6 ff ff e8 2e 16 c6 f7 48 8b 74 24 18 45 31 f6 31 ff ba 02 00 00 00 e8 7a 0b 4c ff e9 45 f6 ff ff e8 10 16 c6 f7 90 <0f> 0b 90 e9 94 f5 ff ff e8 02 16 c6 f7 90 0f 0b 90 42 80 3c 2b 00
RSP: 0018:ffffc90000007900 EFLAGS: 00010246
RAX: ffffffff89fa4640 RBX: ffff888077b8e500 RCX: ffff88803d8fbc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007a10 R08: ffff88803d8fbc00 R09: 0000000000000004
R10: 0000000000000003 R11: ffffffff89fa3a90 R12: 0000000000000010
R13: dffffc0000000000 R14: ffff88803d1ec900 R15: 0000000000000000
FS:  00007effa93a76c0(0000) GS:ffff888125c4f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000b36000 CR3: 0000000026320000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 igmp_send_report+0x89e/0xdb0 net/ipv4/igmp.c:799
 igmp_timer_expire+0x204/0x510 net/ipv4/igmp.c:-1
 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers kernel/time/timer.c:2372 [inline]
 __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384
 run_timer_base kernel/time/timer.c:2393 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
 handle_softirqs+0x286/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_is_held_type+0x137/0x190 kernel/locking/lockdep.c:5948
Code: 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 05 89 93 36 07 <48> 3b 44 24 08 75 43 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc90003377ad8 EFLAGS: 00000206
RAX: 7b91bdf9d9929600 RBX: 0000000000000000 RCX: 7b91bdf9d9929600
RDX: 0000000000000000 RSI: ffffffff8db71adc RDI: ffffffff8be28b80
RBP: 00000000ffffffff R08: 0000000000000000 R09: ffffffff820c5120
R10: dffffc0000000000 R11: ffffed100f49f00d R12: 0000000000000246
R13: ffff88803d8fbc00 R14: ffffffff8e13ee60 R15: 0000000000000000
 lock_is_held include/linux/lockdep.h:249 [inline]
 __might_resched+0xf5/0x610 kernel/sched/core.c:8762
 do_recvmmsg+0x4d9/0x770 net/socket.c:3003
 __sys_recvmmsg net/socket.c:3043 [inline]
 __do_sys_recvmmsg net/socket.c:3066 [inline]
 __se_sys_recvmmsg net/socket.c:3059 [inline]
 __x64_sys_recvmmsg+0x190/0x240 net/socket.c:3059
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7effa858e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007effa93a7038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007effa87b5fa0 RCX: 00007effa858e929
RDX: 015cbc1ab4c0933f RSI: 0000200000001980 RDI: 0000000000000003
RBP: 00007effa8610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007effa87b5fa0 R15: 00007ffde3658428
 </TASK>
----------------
Code disassembly (best guess):
   0:	01 75 44             	add    %esi,0x44(%rbp)
   3:	48 c7 04 24 00 00 00 	movq   $0x0,(%rsp)
   a:	00
   b:	9c                   	pushf
   c:	8f 04 24             	pop    (%rsp)
   f:	f7 04 24 00 02 00 00 	testl  $0x200,(%rsp)
  16:	75 4c                	jne    0x64
  18:	41 f7 c4 00 02 00 00 	test   $0x200,%r12d
  1f:	74 01                	je     0x22
  21:	fb                   	sti
  22:	65 48 8b 05 89 93 36 	mov    %gs:0x7369389(%rip),%rax        # 0x73693b3
  29:	07
* 2a:	48 3b 44 24 08       	cmp    0x8(%rsp),%rax <-- trapping instruction
  2f:	75 43                	jne    0x74
  31:	89 d8                	mov    %ebx,%eax
  33:	48 83 c4 10          	add    $0x10,%rsp
  37:	5b                   	pop    %rbx
  38:	41 5c                	pop    %r12
  3a:	41 5d                	pop    %r13
  3c:	41 5e                	pop    %r14
  3e:	41 5f                	pop    %r15