BUG: MAX_LOCK_DEPTH too low!
turning off the locking correctness validator.
depth: 48  max: 48!
48 locks held by syz.0.17/4316:
 #0: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #1: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #2: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #3: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #4: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #5: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #6: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #7: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #8: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #9: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #10: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #11: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #12: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #13: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #14: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #15: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #16: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #17: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #18: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #19: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #20: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #21: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #22: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #23: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #24: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #25: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #26: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #27: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #28: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #29: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #30: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #31: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #32: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #33: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #34: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #35: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #36: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #37: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #38: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #39: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #40: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #41: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #42: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #43: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #44: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:312
 #45: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x9/0x30 include/linux/rcupdate.h:313
 #46: ffffffff8d11efa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x9/0x30 include/linux/rcupdate.h:313
 #47: ffffffff8d11f000 (rcu_read_lock_bh){....}-{1:2}, at: rcu_lock_acquire+0x9/0x30 include/linux/rcupdate.h:313
INFO: lockdep is turned off.
CPU: 0 PID: 4316 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 __lock_acquire+0x170f/0x7d40 kernel/locking/lockdep.c:-1
 lock_acquire+0x19f/0x400 kernel/locking/lockdep.c:5737
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
 rcu_read_lock_bh include/linux/rcupdate.h:794 [inline]
 rt6_check_neigh net/ipv6/route.c:689 [inline]
 rt6_score_route+0x120/0x370 net/ipv6/route.c:727
 find_match+0x1b0/0xc20 net/ipv6/route.c:749
 __find_rr_leaf+0x240/0x730 net/ipv6/route.c:833
 find_rr_leaf net/ipv6/route.c:854 [inline]
 rt6_select net/ipv6/route.c:898 [inline]
 fib6_table_lookup+0x3c3/0xae0 net/ipv6/route.c:2185
 ip6_pol_route+0x22c/0x1390 net/ipv6/route.c:2222
 pol_lookup_func include/net/ip6_fib.h:582 [inline]
 fib6_rule_lookup+0x35c/0x5e0 net/ipv6/fib6_rules.c:120
 ip6_route_output_flags+0xbf/0x300 net/ipv6/route.c:2645
 ip6_route_output include/net/ip6_route.h:98 [inline]
 rpl_output+0x4c2/0x730 net/ipv6/rpl_iptunnel.c:232
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 rpl_output+0x321/0x730 net/ipv6/rpl_iptunnel.c:250
 lwtunnel_output+0x27e/0x440 net/core/lwtunnel.c:342
 dst_output include/net/dst.h:452 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 rawv6_send_hdrinc+0xd34/0x1650 net/ipv6/raw.c:659
 rawv6_sendmsg+0x11a6/0x1710 net/ipv6/raw.c:917
 sock_sendmsg_nosec net/socket.c:706 [inline]
 __sock_sendmsg net/socket.c:718 [inline]
 ____sys_sendmsg+0x5be/0x8f0 net/socket.c:2446
 ___sys_sendmsg+0x236/0x2e0 net/socket.c:2500
 __sys_sendmsg net/socket.c:2529 [inline]
 __do_sys_sendmsg net/socket.c:2538 [inline]
 __se_sys_sendmsg+0x1b7/0x2a0 net/socket.c:2536
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7d289a41d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffeb574abb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f7d28c2bfa0 RCX: 00007f7d289a41d9
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000003
RBP: 00007f7d28a3b888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7d28c2bfac R14: 00007f7d28c2bfa0 R15: 00007f7d28c2bfa0
 </TASK>
syz.0.17 (4316) used greatest stack depth: 5936 bytes left