------------[ cut here ]------------
WARNING: CPU: 1 PID: 5821 at net/ipv4/ipmr.c:2302 ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302
Modules linked in:
CPU: 1 UID: 0 PID: 5821 Comm: syz-executor Not tainted 6.16.0-rc2-syzkaller-00591-g4f4040ea5d3e #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 ce 33 c6 f7 48 8b 74 24 18 45 31 f6 31 ff ba 02 00 00 00 e8 9a 09 4c ff e9 45 f6 ff ff e8 b0 33 c6 f7 90 <0f> 0b 90 e9 94 f5 ff ff e8 a2 33 c6 f7 90 0f 0b 90 42 80 3c 2b 00
RSP: 0018:ffffc90000a089a0 EFLAGS: 00010246
RAX: ffffffff89fa28a0 RBX: ffff88805509ea00 RCX: ffff88807aed1e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a08ab0 R08: ffff88807aed1e00 R09: 0000000000000004
R10: 0000000000000003 R11: ffffffff89fa1cf0 R12: 0000000000000010
R13: dffffc0000000000 R14: ffff888051749800 R15: 0000000000000000
FS:  0000555555b00500(0000) GS:ffff888125d4f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffef0b5f99c CR3: 0000000079826000 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+0xec/0x180 kernel/softirq.c:480
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407
 tcp_recvmsg+0x220/0x810 net/ipv4/tcp.c:2909
 inet_recvmsg+0x147/0x250 net/ipv4/af_inet.c:883
 sock_recvmsg_nosec net/socket.c:1063 [inline]
 sock_recvmsg+0x1a8/0x270 net/socket.c:1085
 sock_read_iter+0x231/0x2f0 net/socket.c:1155
 new_sync_read fs/read_write.c:491 [inline]
 vfs_read+0x4cd/0x980 fs/read_write.c:572
 ksys_read+0x145/0x250 fs/read_write.c:715
 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: 0033:0x7fccad38d2fd
Code: a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb b5 e8 a8 48 00 00 0f 1f 84 00 00 00 00 00 80 3d 41 82 1f 00 00 74 17 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 5b c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec
RSP: 002b:00007ffd6c98c568 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007ffd6c98c670 RCX: 00007fccad38d2fd
RDX: 0000000000000004 RSI: 00007ffd6c98c57c RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000002ca0cd2 R09: 7fffffffffffffff
R10: 3fffffffffffffff R11: 0000000000000246 R12: 00007ffd6c98c990
R13: 0000000000000004 R14: 00007ffd6c98c57c R15: 00007ffd6c98c610
 </TASK>