BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 8185 Comm: syz-executor Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 add_chain_cache kernel/locking/lockdep.c:-1 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 seqcount_lockdep_reader_access+0xbc/0x104 include/linux/seqlock.h:72 ktime_get+0x64/0x214 kernel/time/timekeeping.c:818 hrtimer_cb_get_time include/linux/hrtimer.h:164 [inline] start_dl_timer+0x1b8/0x428 kernel/sched/deadline.c:1105 update_curr_dl_se+0x364/0x5ec kernel/sched/deadline.c:1498 dl_server_update+0x84/0xb0 kernel/sched/deadline.c:1582 update_curr+0x338/0x600 kernel/sched/fair.c:1243 put_prev_entity+0x54/0x258 kernel/sched/fair.c:5544 pick_next_task_fair+0x548/0x804 kernel/sched/fair.c:8809 __pick_next_task kernel/sched/core.c:6001 [inline] pick_next_task kernel/sched/core.c:6520 [inline] __schedule+0x660/0x2864 kernel/sched/core.c:6902 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7145 preempt_schedule+0x60/0x80 kernel/sched/core.c:7169 __mutex_lock_common+0x1808/0x24ac kernel/locking/ww_mutex.h:-1 __mutex_lock kernel/locking/mutex.c:760 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:812 devl_lock+0x24/0x34 net/devlink/core.c:276 nsim_drv_remove+0x54/0x154 drivers/net/netdevsim/dev.c:1721 nsim_bus_remove+0x20/0x30 drivers/net/netdevsim/bus.c:419 device_remove drivers/base/dd.c:569 [inline] __device_release_driver drivers/base/dd.c:1274 [inline] device_release_driver_internal+0x3a8/0x68c drivers/base/dd.c:1297 device_release_driver+0x28/0x38 drivers/base/dd.c:1320 bus_remove_device+0x310/0x3b0 drivers/base/bus.c:579 device_del+0x47c/0x808 drivers/base/core.c:3878 device_unregister+0x2c/0xcc drivers/base/core.c:3919 nsim_bus_dev_del drivers/net/netdevsim/bus.c:483 [inline] del_device_store+0x27c/0x31c drivers/net/netdevsim/bus.c:244 bus_attr_store+0x80/0xa4 drivers/base/bus.c:172 sysfs_kf_write+0x1a8/0x23c fs/sysfs/file.c:145 kernfs_fop_write_iter+0x314/0x488 fs/kernfs/file.c:334 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x540/0xa3c fs/read_write.c:686 ksys_write+0x120/0x210 fs/read_write.c:738 __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:746 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 netdevsim netdevsim3 netdevsim0: renamed from eth0 netdevsim netdevsim3 netdevsim1: renamed from eth1 netdevsim netdevsim3 netdevsim2: renamed from eth2 netdevsim netdevsim3 netdevsim3: renamed from eth3 8021q: adding VLAN 0 to HW filter on device bond0 8021q: adding VLAN 0 to HW filter on device team0 8021q: adding VLAN 0 to HW filter on device batadv0 veth0_vlan: entered promiscuous mode veth1_vlan: entered promiscuous mode veth0_macvtap: entered promiscuous mode veth1_macvtap: entered promiscuous mode batman_adv: batadv0: Interface activated: batadv_slave_0 batman_adv: batadv0: Interface activated: batadv_slave_1 ieee80211 phy24: Selected rate control algorithm 'minstrel_ht' ieee80211 phy25: Selected rate control algorithm 'minstrel_ht'