BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 7178 Comm: syz.7.776 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 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+0xf8/0x160 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+0x1b40/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 seqcount_lockdep_reader_access include/linux/seqlock.h:102 [inline]
 read_mems_allowed_begin include/linux/cpuset.h:153 [inline]
 get_any_partial mm/slub.c:2287 [inline]
 get_partial mm/slub.c:2329 [inline]
 ___slab_alloc+0x814/0xe8c mm/slub.c:3175
 __slab_alloc+0x74/0xd0 mm/slub.c:3279
 slab_alloc_node mm/slub.c:3364 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc+0x2a0/0x318 mm/slub.c:3422
 kmem_cache_zalloc include/linux/slab.h:689 [inline]
 fill_pool lib/debugobjects.c:169 [inline]
 debug_objects_fill_pool+0x3ac/0x58c lib/debugobjects.c:607
 debug_object_activate+0x48/0x468 lib/debugobjects.c:694
 debug_timer_activate kernel/time/timer.c:782 [inline]
 __mod_timer+0x61c/0xb48 kernel/time/timer.c:1103
 mod_timer+0x2c/0x3c kernel/time/timer.c:1166
 sk_reset_timer+0x30/0xec net/core/sock.c:3374
 inet_csk_reset_xmit_timer+0x128/0x1ac include/net/inet_connection_sock.h:-1
 tcp_reset_xmit_timer include/net/tcp.h:1365 [inline]
 tcp_rearm_rto+0x20c/0x4e0 net/ipv4/tcp_input.c:3261
 tcp_event_new_data_sent+0x1d0/0x3d0 net/ipv4/tcp_output.c:81
 tcp_write_xmit+0x11e0/0x4b7c net/ipv4/tcp_output.c:2716
 __tcp_push_pending_frames+0x98/0x228 net/ipv4/tcp_output.c:2894
 tcp_push+0x43c/0x63c net/ipv4/tcp.c:734
 mptcp_push_release net/mptcp/protocol.c:1576 [inline]
 __mptcp_push_pending+0x6a0/0x844 net/mptcp/protocol.c:1669
 mptcp_sendmsg+0x834/0x1340 net/mptcp/protocol.c:1902
 inet_sendmsg+0x154/0x284 net/ipv4/af_inet.c:841
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 __sys_sendto+0x304/0x3fc net/socket.c:2153
 __do_sys_sendto net/socket.c:2165 [inline]
 __se_sys_sendto net/socket.c:2161 [inline]
 __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2161
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 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