loop5: detected capacity change from 0 to 512
EXT2-fs (loop5): warning: mounting ext3 filesystem as ext2
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 10664 Comm: syz.5.1591 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call trace:
 dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1864/0x6800 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 proc_entry_rundown+0x128/0x21c fs/proc/inode.c:271
 remove_proc_entry+0x2d8/0x42c fs/proc/generic.c:737
 recent_mt_destroy+0x208/0x4e4 net/netfilter/xt_recent.c:465
 cleanup_match net/ipv4/netfilter/ip_tables.c:461 [inline]
 cleanup_entry+0x124/0x2cc net/ipv4/netfilter/ip_tables.c:646
 translate_table+0x16c0/0x1878 net/ipv4/netfilter/ip_tables.c:729
 do_replace net/ipv4/netfilter/ip_tables.c:1139 [inline]
 do_ipt_set_ctl+0x800/0xb74 net/ipv4/netfilter/ip_tables.c:1637
 nf_setsockopt+0x270/0x290 net/netfilter/nf_sockopt.c:101
 ip_setsockopt+0x124/0x134 net/ipv4/ip_sockglue.c:1468
 udp_setsockopt+0xa4/0xbc net/ipv4/udp.c:2792
 sock_common_setsockopt+0xb0/0xcc net/core/sock.c:3691
 __sys_setsockopt+0x2fc/0x50c net/socket.c:2287
 __do_sys_setsockopt net/socket.c:2298 [inline]
 __se_sys_setsockopt net/socket.c:2295 [inline]
 __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2295
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585