netdevsim netdevsim6 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim6 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim6 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 7458 Comm: syz-executor Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 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+0xf88/0x2f44 kernel/locking/lockdep.c:5237 lock_acquire+0x140/0x368 kernel/locking/lockdep.c:5868 seqcount_lockdep_reader_access+0x58/0xcc include/linux/seqlock.h:73 read_seqbegin include/linux/seqlock.h:838 [inline] zone_span_seqbegin include/linux/memory_hotplug.h:87 [inline] page_outside_zone_boundaries mm/page_alloc.c:568 [inline] bad_range+0x84/0x26c mm/page_alloc.c:587 rmqueue mm/page_alloc.c:3419 [inline] get_page_from_freelist+0x20e8/0x2238 mm/page_alloc.c:3943 __alloc_frozen_pages_noprof+0x17c/0x31c mm/page_alloc.c:5226 alloc_slab_page mm/slub.c:3278 [inline] allocate_slab mm/slub.c:3467 [inline] new_slab+0xc4/0x750 mm/slub.c:3525 refill_objects+0x2e0/0x354 mm/slub.c:7271 refill_sheaf+0x44/0x6c mm/slub.c:2816 __pcs_replace_empty_main+0x260/0x4e0 mm/slub.c:4651 alloc_from_pcs mm/slub.c:4749 [inline] slab_alloc_node mm/slub.c:4883 [inline] kmem_cache_alloc_lru_noprof+0x344/0x618 mm/slub.c:4917 debugfs_alloc_inode+0x2c/0x3c fs/debugfs/inode.c:225 alloc_inode+0x68/0x198 fs/inode.c:345 new_inode+0x20/0x50 fs/inode.c:1179 debugfs_get_inode+0x20/0x7c fs/debugfs/inode.c:72 __debugfs_create_file+0xb8/0x358 fs/debugfs/inode.c:433 debugfs_create_file_unsafe+0x54/0x6c fs/debugfs/inode.c:509 debugfs_create_mode_unsafe fs/debugfs/file.c:-1 [inline] debugfs_create_u32+0x88/0xa0 fs/debugfs/file.c:681 nsim_bpf_init+0xf0/0x248 drivers/net/netdevsim/bpf.c:632 nsim_init_netdevsim drivers/net/netdevsim/netdev.c:1062 [inline] nsim_create+0x8e8/0xcc4 drivers/net/netdevsim/netdev.c:1151 __nsim_dev_port_add+0x5ac/0x96c drivers/net/netdevsim/dev.c:1509 nsim_dev_port_add_all+0x50/0x114 drivers/net/netdevsim/dev.c:1570 nsim_drv_probe+0x760/0x9fc drivers/net/netdevsim/dev.c:1731 nsim_bus_probe+0x20/0x30 drivers/net/netdevsim/bus.c:420 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2a8/0x7e8 drivers/base/dd.c:709 __driver_probe_device+0x1e0/0x33c drivers/base/dd.c:871 driver_probe_device+0x6c/0x19c drivers/base/dd.c:901 __device_attach_driver+0x194/0x2f4 drivers/base/dd.c:1029 bus_for_each_drv+0x144/0x1dc drivers/base/bus.c:500 __device_attach+0x250/0x394 drivers/base/dd.c:1101 device_initial_probe+0x90/0xcc drivers/base/dd.c:1156 bus_probe_device+0x58/0x120 drivers/base/bus.c:613 device_add+0x6c4/0x9e4 drivers/base/core.c:3706 device_register+0x28/0x38 drivers/base/core.c:3788 nsim_bus_dev_new drivers/net/netdevsim/bus.c:471 [inline] new_device_store+0x2d0/0x5a8 drivers/net/netdevsim/bus.c:191 bus_attr_store+0x80/0xa4 drivers/base/bus.c:172 sysfs_kf_write+0xe0/0x108 fs/sysfs/file.c:142 kernfs_fop_write_iter+0x264/0x3c0 fs/kernfs/file.c:352 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x52c/0xa14 fs/read_write.c:688 ksys_write+0x12c/0x224 fs/read_write.c:740 __do_sys_write fs/read_write.c:751 [inline] __se_sys_write fs/read_write.c:748 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:748 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:740 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:759 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 netdevsim netdevsim6 netdevsim0: renamed from eth0 8021q: adding VLAN 0 to HW filter on device netdevsim0 netdevsim netdevsim6 netdevsim1: renamed from eth1 8021q: adding VLAN 0 to HW filter on device netdevsim1 netdevsim netdevsim6 netdevsim2: renamed from eth2 8021q: adding VLAN 0 to HW filter on device netdevsim2 netdevsim netdevsim6 netdevsim3: renamed from eth3 8021q: adding VLAN 0 to HW filter on device netdevsim3 bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state 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 phy137: Selected rate control algorithm 'minstrel_ht' ieee80211 phy138: Selected rate control algorithm 'minstrel_ht'