------------[ cut here ]------------
WARNING: net/ipv4/ipmr.c:2302 at ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302, CPU#0: udevd/5889
Modules linked in:
CPU: 0 UID: 0 PID: 5889 Comm: udevd Not tainted 6.16.0-rc3-next-20250625-syzkaller #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 68 be f7 48 8b 74 24 18 45 31 f6 31 ff ba 02 00 00 00 e8 4a 01 4c ff e9 45 f6 ff ff e8 b0 68 be f7 90 <0f> 0b 90 e9 94 f5 ff ff e8 a2 68 be f7 90 0f 0b 90 42 80 3c 2b 00
RSP: 0018:ffffc90000007900 EFLAGS: 00010246
RAX: ffffffff8a0153d0 RBX: ffff888031aec140 RCX: ffff888065bc3c00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007a10 R08: ffff888065bc3c00 R09: 0000000000000004
R10: 0000000000000003 R11: ffffffff8a014820 R12: 0000000000000010
R13: dffffc0000000000 R14: ffff88805dfd5e00 R15: 0000000000000000
FS:  00007f92ca187880(0000) GS:ffff888125c21000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f92ca174000 CR3: 0000000067f16000 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+0x17b/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:mas_next_slot+0x896/0xcf0 lib/maple_tree.c:4743
Code: 59 f6 45 31 f6 eb 17 e8 c8 38 59 f6 4d 8d 75 08 eb 0c e8 bd 38 59 f6 4d 8d b5 80 00 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 <74> 08 4c 89 ff e8 f0 4d bd f6 49 8b 1f 48 8b 44 24 48 42 0f b6 04
RSP: 0018:ffffc900043df548 EFLAGS: 00000246
RAX: 1ffff9200087bedc RBX: 00007f92ca1a9fff RCX: ffff888065bc3c00
RDX: 0000000000000000 RSI: ffffffff8f8865a0 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffff888065bc3c00 R09: 0000000000000004
R10: 0000000000000003 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888029e58600 R14: ffff888029e58680 R15: ffffc900043df6e0
 mas_find+0x9e7/0xc10 lib/maple_tree.c:6047
 vma_next include/linux/mm.h:864 [inline]
 validate_mm+0xe1/0x4b0 mm/vma.c:636
 mmap_region+0x15a5/0x20c0 mm/vma.c:2759
 do_mmap+0xc45/0x10d0 mm/mmap.c:561
 vm_mmap_pgoff+0x31b/0x4c0 mm/util.c:579
 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: 0033:0x7f92c9b1d822
Code: 00 00 00 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 89 cd 53 48 89 fb 48 85 ff 74 3b 41 89 ea 48 89 df b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 76 5b 5d c3 0f 1f 00 48 8b 05 a1 35 0d 00 64
RSP: 002b:00007ffeeecc4a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f92c9b1d822
RDX: 0000000000000003 RSI: 0000000000000200 RDI: 0000000000000000
RBP: 0000000000000022 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000ffea00 R14: 000055c4073486b0 R15: 0000000000e7e200
 </TASK>
----------------
Code disassembly (best guess):
   0:	59                   	pop    %rcx
   1:	f6 45 31 f6          	testb  $0xf6,0x31(%rbp)
   5:	eb 17                	jmp    0x1e
   7:	e8 c8 38 59 f6       	call   0xf65938d4
   c:	4d 8d 75 08          	lea    0x8(%r13),%r14
  10:	eb 0c                	jmp    0x1e
  12:	e8 bd 38 59 f6       	call   0xf65938d4
  17:	4d 8d b5 80 00 00 00 	lea    0x80(%r13),%r14
  1e:	4c 89 f8             	mov    %r15,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
* 2a:	74 08                	je     0x34 <-- trapping instruction
  2c:	4c 89 ff             	mov    %r15,%rdi
  2f:	e8 f0 4d bd f6       	call   0xf6bd4e24
  34:	49 8b 1f             	mov    (%r15),%rbx
  37:	48 8b 44 24 48       	mov    0x48(%rsp),%rax
  3c:	42                   	rex.X
  3d:	0f                   	.byte 0xf
  3e:	b6 04                	mov    $0x4,%dh