------------[ cut here ]------------
WARNING: CPU: 0 PID: 9 at net/ipv4/ipmr.c:2302 ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302
Modules linked in:
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 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
Workqueue: events team_mcast_rejoin_work
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: ffff88805799b3c0 RCX: ffff88801d2a8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007a10 R08: ffff88801d2a8000 R09: 0000000000000004
R10: 0000000000000003 R11: ffffffff89fa3a90 R12: 0000000000000010
R13: dffffc0000000000 R14: ffff88805a0d3d00 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888125c4f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000033000 CR3: 000000002782a000 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:queue_delayed_work_on+0x201/0x280 kernel/workqueue.c:2566
Code: 4d 85 e4 75 16 e8 ef 7f 35 00 eb 15 e8 e8 7f 35 00 e8 23 9c db 09 4d 85 e4 74 ea e8 d9 7f 35 00 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 66 43 c7 44 2f 09 00 00 43 c6 44 2f 0b 00
RSP: 0018:ffffc900000e7980 EFLAGS: 00000293
RAX: ffffffff818adc77 RBX: ffff888043059001 RCX: ffff88801d2a8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000e7a70 R08: ffffffff8fa120f7 R09: 1ffffffff1f4241e
R10: dffffc0000000000 R11: fffffbfff1f4241f R12: 0000000000000200
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff9200001cf38
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	4d 85 e4             	test   %r12,%r12
   3:	75 16                	jne    0x1b
   5:	e8 ef 7f 35 00       	call   0x357ff9
   a:	eb 15                	jmp    0x21
   c:	e8 e8 7f 35 00       	call   0x357ff9
  11:	e8 23 9c db 09       	call   0x9db9c39
  16:	4d 85 e4             	test   %r12,%r12
  19:	74 ea                	je     0x5
  1b:	e8 d9 7f 35 00       	call   0x357ff9
  20:	fb                   	sti
  21:	48 c7 44 24 40 0e 36 	movq   $0x45e0360e,0x40(%rsp)
  28:	e0 45
* 2a:	4b c7 04 2f 00 00 00 	movq   $0x0,(%r15,%r13,1) <-- trapping instruction
  31:	00
  32:	66 43 c7 44 2f 09 00 	movw   $0x0,0x9(%r15,%r13,1)
  39:	00
  3a:	43 c6 44 2f 0b 00    	movb   $0x0,0xb(%r15,%r13,1)