------------[ cut here ]------------
WARNING: CPU: 1 PID: 11063 at net/ipv4/ipmr.c:2302 ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302
Modules linked in:
CPU: 1 UID: 0 PID: 11063 Comm: syz-executor Not tainted 6.16.0-rc2-syzkaller-00625-g27390db9592d #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 8e 16 c6 f7 48 8b 74 24 18 45 31 f6 31 ff ba 02 00 00 00 e8 7a 0b 4c ff e9 45 f6 ff ff e8 70 16 c6 f7 90 <0f> 0b 90 e9 94 f5 ff ff e8 62 16 c6 f7 90 0f 0b 90 42 80 3c 2b 00
RSP: 0018:ffffc90000a08900 EFLAGS: 00010246
RAX: ffffffff89fa45e0 RBX: ffff88804be77a00 RCX: ffff888027d70000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a08a10 R08: ffff888027d70000 R09: 0000000000000004
R10: 0000000000000003 R11: ffffffff89fa3a30 R12: 0000000000000010
R13: dffffc0000000000 R14: ffff88806bff9f00 R15: 0000000000000000
FS: 000055557f30f500(0000) GS:ffff888125d4f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7837440000 CR3: 0000000064fdc000 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:console_trylock_spinning kernel/printk/printk.c:2061 [inline]
RIP: 0010:vprintk_emit+0x58f/0x7a0 kernel/printk/printk.c:2449
Code: 85 32 01 00 00 e8 d1 61 1f 00 41 89 df 4d 85 f6 48 8b 1c 24 75 07 e8 c0 61 1f 00 eb 06 e8 b9 61 1f 00 fb 48 c7 c7 20 30 13 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 b9 36
RSP: 0018:ffffc900036a6c20 EFLAGS: 00000293
RAX: ffffffff81a0fa97 RBX: ffffffff81a0f954 RCX: ffff888027d70000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e133020
RBP: ffffc900036a6d30 R08: ffffffff8fa120f7 R09: 1ffffffff1f4241e
R10: dffffc0000000000 R11: fffffbfff1f4241f R12: dffffc0000000000
R13: 1ffff920006d4d88 R14: 0000000000000200 R15: 000000000000003e
dev_vprintk_emit+0x337/0x3f0 drivers/base/core.c:4917
dev_printk_emit+0xe0/0x130 drivers/base/core.c:4928
_dev_printk+0x113/0x160 drivers/base/core.c:4957
ieee80211_init_rate_ctrl_alg+0x56d/0x5f0 net/mac80211/rate.c:1017
ieee80211_register_hw+0x2ee9/0x4120 net/mac80211/main.c:1533
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+0x215/0x300 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+0x208/0x470 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+0x75b/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+0x219/0x270 net/socket.c:727
__sys_sendto+0x3bd/0x520 net/socket.c:2226
__do_sys_sendto net/socket.c:2233 [inline]
__se_sys_sendto net/socket.c:2229 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2229
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: 0033:0x7f2b823907bc
Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b
RSP: 002b:00007ffe6b07e980 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f2b830e4620 RCX: 00007f2b823907bc
RDX: 0000000000000024 RSI: 00007f2b830e4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffe6b07e9d4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f2b830e4670 R15: 0000000000000000
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 32 01 xor (%rcx),%al
2: 00 00 add %al,(%rax)
4: e8 d1 61 1f 00 call 0x1f61da
9: 41 89 df mov %ebx,%r15d
c: 4d 85 f6 test %r14,%r14
f: 48 8b 1c 24 mov (%rsp),%rbx
13: 75 07 jne 0x1c
15: e8 c0 61 1f 00 call 0x1f61da
1a: eb 06 jmp 0x22
1c: e8 b9 61 1f 00 call 0x1f61da
21: fb sti
22: 48 c7 c7 20 30 13 8e mov $0xffffffff8e133020,%rdi
* 29: 31 f6 xor %esi,%esi <-- trapping instruction
2b: ba 01 00 00 00 mov $0x1,%edx
30: 31 c9 xor %ecx,%ecx
32: 41 b8 01 00 00 00 mov $0x1,%r8d
38: 45 31 c9 xor %r9d,%r9d
3b: 53 push %rbx
3c: e8 .byte 0xe8
3d: b9 .byte 0xb9
3e: 36 ss