------------[ cut here ]------------
WARNING: net/ipv4/ipmr.c:2302 at ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302, CPU#0: udevd/6150
Modules linked in:
CPU: 0 UID: 0 PID: 6150 Comm: udevd Not tainted 6.16.0-rc2-next-20250619-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 51 bf f7 48 8b 74 24 18 45 31 f6 31 ff ba 02 00 00 00 e8 9a 11 4c ff e9 45 f6 ff ff e8 b0 51 bf f7 90 <0f> 0b 90 e9 94 f5 ff ff e8 a2 51 bf f7 90 0f 0b 90 42 80 3c 2b 00
RSP: 0018:ffffc90000007900 EFLAGS: 00010246
RAX: ffffffff8a0116e0 RBX: ffff888033ada640 RCX: ffff888026f83c00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007a10 R08: ffffffff8fa18bf7 R09: 1ffffffff1f4317e
R10: dffffc0000000000 R11: ffffffff8a010b30 R12: 0000000000000010
R13: dffffc0000000000 R14: ffff888032a2e600 R15: 0000000000000000
FS:  00007f6ec03ce880(0000) GS:ffff888125c28000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3031bff8 CR3: 000000002f518000 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:jhash2 include/linux/jhash.h:129 [inline]
RIP: 0010:hash_stack lib/stackdepot.c:514 [inline]
RIP: 0010:stack_depot_save_flags+0x92/0x900 lib/stackdepot.c:615
Code: fe 04 72 6f 89 e8 89 e9 4c 89 f2 03 0a 03 42 04 03 6a 08 89 ef c1 c7 04 29 e9 31 cf 01 c5 29 f8 41 89 f8 41 c1 c0 06 41 31 c0 <01> ef 45 89 c1 41 c1 c1 08 44 29 c5 41 31 e9 41 01 f8 44 29 cf 44
RSP: 0018:ffffc9000b30fb68 EFLAGS: 00000286
RAX: 000000006e2addb1 RBX: 0000000000000cc0 RCX: 0000000019dda316
RDX: ffffc9000b30fbec RSI: 000000000000000b RDI: 00000000ca26a002
RBP: 0000000085912de4 R08: 00000000e782dd03 R09: 00000000bc977c96
R10: 0000000000000007 R11: ffffffff81ad0f60 R12: 0000000000001000
R13: ffff8880583b5500 R14: ffffc9000b30fbe0 R15: ffffc9000b30fb01
 kasan_save_stack mm/kasan/common.c:48 [inline]
 kasan_save_track+0x4f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4179 [inline]
 slab_alloc_node mm/slub.c:4228 [inline]
 kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4235
 getname_flags+0xb8/0x540 fs/namei.c:146
 getname include/linux/fs.h:2910 [inline]
 __do_sys_unlink fs/namei.c:4696 [inline]
 __se_sys_unlink fs/namei.c:4694 [inline]
 __x64_sys_unlink+0x3a/0x50 fs/namei.c:4694
 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: 0033:0x7f6ebfd15937
Code: 00 00 e9 a9 fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 5f 00 00 00 0f 05 c3 0f 1f 84 00 00 00 00 00 b8 57 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 91 b4 0d 00 f7 d8 64 89 02 b8
RSP: 002b:00007ffe4012af88 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 000055f693784b70 RCX: 00007f6ebfd15937
RDX: 0000000000000000 RSI: 00007ffe40129f40 RDI: 00007ffe4012af90
RBP: 0000000000000157 R08: 0000000000000064 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe4012af90
R13: 000055f6937883e0 R14: 0000000000000008 R15: 000055f693784b70
 </TASK>
----------------
Code disassembly (best guess):
   0:	fe 04 72             	incb   (%rdx,%rsi,2)
   3:	6f                   	outsl  %ds:(%rsi),(%dx)
   4:	89 e8                	mov    %ebp,%eax
   6:	89 e9                	mov    %ebp,%ecx
   8:	4c 89 f2             	mov    %r14,%rdx
   b:	03 0a                	add    (%rdx),%ecx
   d:	03 42 04             	add    0x4(%rdx),%eax
  10:	03 6a 08             	add    0x8(%rdx),%ebp
  13:	89 ef                	mov    %ebp,%edi
  15:	c1 c7 04             	rol    $0x4,%edi
  18:	29 e9                	sub    %ebp,%ecx
  1a:	31 cf                	xor    %ecx,%edi
  1c:	01 c5                	add    %eax,%ebp
  1e:	29 f8                	sub    %edi,%eax
  20:	41 89 f8             	mov    %edi,%r8d
  23:	41 c1 c0 06          	rol    $0x6,%r8d
  27:	41 31 c0             	xor    %eax,%r8d
* 2a:	01 ef                	add    %ebp,%edi <-- trapping instruction
  2c:	45 89 c1             	mov    %r8d,%r9d
  2f:	41 c1 c1 08          	rol    $0x8,%r9d
  33:	44 29 c5             	sub    %r8d,%ebp
  36:	41 31 e9             	xor    %ebp,%r9d
  39:	41 01 f8             	add    %edi,%r8d
  3c:	44 29 cf             	sub    %r9d,%edi
  3f:	44                   	rex.R