------------[ cut here ]------------
WARNING: net/ipv4/ipmr.c:2302 at ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302, CPU#0: syz-executor/9283
Modules linked in:
CPU: 0 UID: 0 PID: 9283 Comm: syz-executor Not tainted 6.16.0-rc3-next-20250626-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 1e 32 be f7 48 8b 74 24 18 45 31 f6 31 ff ba 02 00 00 00 e8 ea fe 4b ff e9 45 f6 ff ff e8 00 32 be f7 90 <0f> 0b 90 e9 94 f5 ff ff e8 f2 31 be f7 90 0f 0b 90 42 80 3c 2b 00
RSP: 0018:ffffc90000007900 EFLAGS: 00010246
RAX: ffffffff8a018a80 RBX: ffff8880539f0140 RCX: ffff8880255dbc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007a10 R08: ffff8880255dbc00 R09: 0000000000000004
R10: 0000000000000003 R11: ffffffff8a017ed0 R12: 0000000000000010
R13: dffffc0000000000 R14: ffff888062c9da00 R15: 0000000000000000
FS: 0000555586be2500(0000) GS:ffff888125c1f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb46537e2d8 CR3: 00000000785f8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 3a810b1eb6134bdc DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
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
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0xb/0x2390 arch/x86/kernel/unwind_orc.c:469
Code: c1 7c 92 48 89 df e8 c4 10 b1 00 eb 88 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 <41> 54 53 48 81 ec 98 00 00 00 49 89 fe 48 bd 00 00 00 00 00 fc ff
RSP: 0018:ffffc900044aec20 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc900044aed00 RCX: 2148178541cc7d00
RDX: dffffc0000000000 RSI: ffffffff8216ae04 RDI: ffffc900044aec48
RBP: ffffc900044aecd0 R08: ffffc900044aed10 R09: 0000000000000001
R10: ffffc900044aec98 R11: ffffffff81ac6600 R12: ffff8880255dbc00
R13: 1ffff92000895db4 R14: ffffffff81ac6600 R15: ffffc900044aec48
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
save_stack+0xf5/0x1f0 mm/page_owner.c:156
__set_page_owner+0x8d/0x4a0 mm/page_owner.c:329
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1848
prep_new_page mm/page_alloc.c:1856 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3855
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5145
alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419
alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline]
alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2510
get_free_pages_noprof+0xf/0x80 mm/page_alloc.c:5204
__kasan_populate_vmalloc mm/kasan/shadow.c:362 [inline]
kasan_populate_vmalloc+0x33/0x1a0 mm/kasan/shadow.c:417
alloc_vmap_area+0xd51/0x1490 mm/vmalloc.c:2092
__get_vm_area_node+0x1f8/0x300 mm/vmalloc.c:3187
__vmalloc_node_range_noprof+0x301/0x12f0 mm/vmalloc.c:3853
__vmalloc_node_noprof mm/vmalloc.c:3956 [inline]
vzalloc_noprof+0xb2/0xf0 mm/vmalloc.c:4030
alloc_counters+0xd3/0x6d0 net/ipv4/netfilter/ip_tables.c:799
copy_entries_to_user net/ipv4/netfilter/arp_tables.c:681 [inline]
get_entries net/ipv4/netfilter/arp_tables.c:867 [inline]
do_arpt_get_ctl+0xa42/0x1010 net/ipv4/netfilter/arp_tables.c:1461
nf_getsockopt+0x26e/0x290 net/netfilter/nf_sockopt.c:116
ip_getsockopt+0x1c4/0x220 net/ipv4/ip_sockglue.c:1777
do_sock_getsockopt+0x35d/0x650 net/socket.c:2405
__sys_getsockopt net/socket.c:2434 [inline]
__do_sys_getsockopt net/socket.c:2441 [inline]
__se_sys_getsockopt net/socket.c:2438 [inline]
__x64_sys_getsockopt+0x1a5/0x250 net/socket.c:2438
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: 0033:0x7fb46519066a
Code: ff c3 66 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb b8 0f 1f 44 00 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7
RSP: 002b:00007ffdf0b2a538 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb46519066a
RDX: 0000000000000061 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007ffdf0b2a5a0 R08: 00007ffdf0b2a54c R09: 00007ffdf0b2a937
R10: 00007ffdf0b2a5a0 R11: 0000000000000212 R12: 00007ffdf0b2a54c
R13: 00000000000927c0 R14: 000000000005ed39 R15: 00007ffdf0b2ac80
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 7c 92 jl 0xffffff94
2: 48 89 df mov %rbx,%rdi
5: e8 c4 10 b1 00 call 0xb110ce
a: eb 88 jmp 0xffffff94
c: 66 90 xchg %ax,%ax
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 90 nop
19: 90 nop
1a: 90 nop
1b: 90 nop
1c: 90 nop
1d: 90 nop
1e: f3 0f 1e fa endbr64
22: 55 push %rbp
23: 41 57 push %r15
25: 41 56 push %r14
27: 41 55 push %r13
* 29: 41 54 push %r12 <-- trapping instruction
2b: 53 push %rbx
2c: 48 81 ec 98 00 00 00 sub $0x98,%rsp
33: 49 89 fe mov %rdi,%r14
36: 48 rex.W
37: bd 00 00 00 00 mov $0x0,%ebp
3c: 00 fc add %bh,%ah
3e: ff .byte 0xff