------------[ cut here ]------------
WARNING: net/ipv4/ipmr.c:2302 at ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302, CPU#0: syz-executor/9738
Modules linked in:
CPU: 0 UID: 0 PID: 9738 Comm: syz-executor Not tainted 6.16.0-rc3-next-20250624-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 0e 74 be f7 48 8b 74 24 18 45 31 f6 31 ff ba 02 00 00 00 e8 9a 01 4c ff e9 45 f6 ff ff e8 f0 73 be f7 90 <0f> 0b 90 e9 94 f5 ff ff e8 e2 73 be f7 90 0f 0b 90 42 80 3c 2b 00
RSP: 0018:ffffc90000007900 EFLAGS: 00010246
RAX: ffffffff8a0156d0 RBX: ffff888056037a00 RCX: ffff88802d351e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007a10 R08: ffff88802d351e00 R09: 0000000000000004
R10: 0000000000000003 R11: ffffffff8a014b20 R12: 0000000000000010
R13: dffffc0000000000 R14: ffff888074ca0a00 R15: 0000000000000000
FS:  0000555589abf500(0000) GS:ffff888125c25000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2bab63 CR3: 00000000673cc000 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:addr_has_metadata mm/kasan/kasan.h:333 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:177 [inline]
RIP: 0010:kasan_check_range+0x47/0x2c0 mm/kasan/generic.c:189
Code: 49 39 f8 0f 82 82 02 00 00 49 b9 00 00 00 00 00 80 ff ff eb 11 cc cc cc f3 0f 1e fa 49 b9 00 00 00 00 00 00 00 ff f3 0f 1e fa <4c> 39 cf 0f 82 58 02 00 00 49 89 ff 49 c1 ef 03 49 ba 00 00 00 00
RSP: 0018:ffffc90002f17170 EFLAGS: 00000206
RAX: ffff88802d351e01 RBX: 0000000000000060 RCX: ffffffff8172c446
RDX: 0000000000000001 RSI: 0000000000000060 RDI: ffffc90002f17228
RBP: 0000000000000000 R08: ffffc90002f17288 R09: ffff800000000000
R10: ffffc90002f173a0 R11: fffff520005e2e84 R12: 0000000000000000
R13: ffff88802d351e00 R14: ffffc90002f17228 R15: 0000000000000000
 __asan_memset+0x22/0x50 mm/kasan/shadow.c:84
 __unwind_start+0x36/0x760 arch/x86/kernel/unwind_orc.c:686
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0xe4/0x150 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 save_stack+0xf5/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:308
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1392 [inline]
 free_unref_folios+0xd77/0x1570 mm/page_alloc.c:2949
 folios_put_refs+0x559/0x640 mm/swap.c:992
 folio_batch_release include/linux/pagevec.h:101 [inline]
 shmem_undo_range+0x49e/0x14b0 mm/shmem.c:1149
 shmem_truncate_range mm/shmem.c:1261 [inline]
 shmem_evict_inode+0x272/0xa70 mm/shmem.c:1389
 evict+0x504/0x9c0 fs/inode.c:810
 __dentry_kill+0x209/0x660 fs/dcache.c:669
 dput+0x19f/0x2b0 fs/dcache.c:911
 __fput+0x68e/0xa70 fs/file_table.c:476
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114
 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f659718d58a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24
RSP: 002b:00007ffd47184a70 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f659718d58a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007ffd47184acc R08: 0000000000000000 R09: 00007ffd471847d7
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00000000000927c0 R14: 0000000000074d56 R15: 00007ffd47184b20
 </TASK>
----------------
Code disassembly (best guess):
   0:	49 39 f8             	cmp    %rdi,%r8
   3:	0f 82 82 02 00 00    	jb     0x28b
   9:	49 b9 00 00 00 00 00 	movabs $0xffff800000000000,%r9
  10:	80 ff ff
  13:	eb 11                	jmp    0x26
  15:	cc                   	int3
  16:	cc                   	int3
  17:	cc                   	int3
  18:	f3 0f 1e fa          	endbr64
  1c:	49 b9 00 00 00 00 00 	movabs $0xff00000000000000,%r9
  23:	00 00 ff
  26:	f3 0f 1e fa          	endbr64
* 2a:	4c 39 cf             	cmp    %r9,%rdi <-- trapping instruction
  2d:	0f 82 58 02 00 00    	jb     0x28b
  33:	49 89 ff             	mov    %rdi,%r15
  36:	49 c1 ef 03          	shr    $0x3,%r15
  3a:	49                   	rex.WB
  3b:	ba 00 00 00 00       	mov    $0x0,%edx