------------[ cut here ]------------
WARNING: CPU: 1 PID: 14522 at net/ipv4/ipmr.c:2302 ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302
Modules linked in:
CPU: 1 UID: 0 PID: 14522 Comm: syz.3.2888 Not tainted 6.16.0-rc2-syzkaller-00591-g4f4040ea5d3e #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 33 c6 f7 48 8b 74 24 18 45 31 f6 31 ff ba 02 00 00 00 e8 9a 09 4c ff e9 45 f6 ff ff e8 b0 33 c6 f7 90 <0f> 0b 90 e9 94 f5 ff ff e8 a2 33 c6 f7 90 0f 0b 90 42 80 3c 2b 00
RSP: 0018:ffffc90000a08900 EFLAGS: 00010246
RAX: ffffffff89fa28a0 RBX: ffff88805dbb4000 RCX: ffff888026a8da00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a08a10 R08: ffff888026a8da00 R09: 0000000000000004
R10: 0000000000000003 R11: ffffffff89fa1cf0 R12: 0000000000000010
R13: dffffc0000000000 R14: ffff8880496c8d00 R15: 0000000000000000
FS: 00007fabce3f66c0(0000) GS:ffff888125d4f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c34c972 CR3: 0000000034596000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 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+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
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7108
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 cb 48 29 f6 e8 a6 5e 60 f6 fb bf 01 00 00 00 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000b416980 EFLAGS: 00000282
RAX: 039806080d370000 RBX: 0000000000000000 RCX: 039806080d370000
RDX: 0000000000000006 RSI: ffffffff8d984a0d RDI: 0000000000000001
RBP: ffffc9000b416a20 R08: ffffffff8fa11ff7 R09: 1ffffffff1f423fe
R10: dffffc0000000000 R11: fffffbfff1f423ff R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001682d30
irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:dump_stack_lvl+0x1f1/0x250 lib/dump_stack.c:124
Code: e8 04 73 8d 00 49 21 de 75 65 e8 1a 6e 8d 00 4d 85 ed 75 07 e8 10 6e 8d 00 eb 06 e8 09 6e 8d 00 fb 48 c7 44 24 20 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 43 c7 44 27 09 00 00 00 00 66 43 c7 44 27
RSP: 0018:ffffc9000b416ae0 EFLAGS: 00000283
RAX: ffffffff8132ee47 RBX: 0000000000000082 RCX: 0000000000080000
RDX: ffffc9000b749000 RSI: 000000000001e9d9 RDI: 000000000001e9da
RBP: ffffc9000b416bd8 R08: ffffffff8fa11ff7 R09: 1ffffffff1f423fe
R10: dffffc0000000000 R11: fffffbfff1f423ff R12: dffffc0000000000
R13: 0000000000000200 R14: 0000000000000000 R15: 1ffff92001682d60
sysfs_warn_dup+0x8e/0xa0 fs/sysfs/dir.c:30
sysfs_do_create_link_sd+0xc0/0x110 fs/sysfs/symlink.c:51
device_add_class_symlinks+0x1cf/0x240 drivers/base/core.c:3451
device_add+0x475/0xb50 drivers/base/core.c:3643
wiphy_register+0x199a/0x26b0 net/wireless/core.c:1005
ieee80211_register_hw+0x33e1/0x4120 net/mac80211/main.c:1589
mac80211_hwsim_new_radio+0x2f0e/0x5340 drivers/net/wireless/virtual/mac80211_hwsim.c:5565
hwsim_new_radio_nl+0xea4/0x1b10 drivers/net/wireless/virtual/mac80211_hwsim.c:6249
genl_family_rcv_msg_doit+0x212/0x300 net/netlink/genetlink.c:1115
genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
genl_rcv_msg+0x60e/0x790 net/netlink/genetlink.c:1210
netlink_rcv_skb+0x205/0x470 net/netlink/af_netlink.c:2534
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x758/0x8d0 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg+0x21c/0x270 net/socket.c:727
____sys_sendmsg+0x505/0x830 net/socket.c:2612
___sys_sendmsg+0x21f/0x2a0 net/socket.c:2666
__sys_sendmsg net/socket.c:2698 [inline]
__do_sys_sendmsg net/socket.c:2703 [inline]
__se_sys_sendmsg net/socket.c:2701 [inline]
__x64_sys_sendmsg+0x19b/0x260 net/socket.c:2701
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: 0033:0x7fabd058e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fabce3f6038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fabd07b5fa0 RCX: 00007fabd058e929
RDX: 0000000000000300 RSI: 0000200000000040 RDI: 0000000000000004
RBP: 00007fabd0610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fabd07b5fa0 R15: 00007ffe5c1e6178
----------------
Code disassembly (best guess):
0: 24 20 and $0x20,%al
2: f6 44 24 21 02 testb $0x2,0x21(%rsp)
7: 74 0c je 0x15
9: 90 nop
a: 0f 0b ud2
c: 48 f7 03 08 00 00 00 testq $0x8,(%rbx)
13: 74 64 je 0x79
15: bf 01 00 00 00 mov $0x1,%edi
1a: e8 cb 48 29 f6 call 0xf62948ea
1f: e8 a6 5e 60 f6 call 0xf6605eca
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 1b ab ff ff call 0xffffab4a <-- trapping instruction
2f: 48 c7 44 24 40 00 00 movq $0x0,0x40(%rsp)
36: 00 00
38: 9c pushf
39: 8f 44 24 40 pop 0x40(%rsp)
3d: 8b .byte 0x8b
3e: 44 rex.R
3f: 24 .byte 0x24