------------[ cut here ]------------ WARNING: CPU: 1 PID: 7312 at kernel/workqueue.c:1728 current_wq_worker kernel/workqueue_internal.h:69 [inline] WARNING: CPU: 1 PID: 7312 at kernel/workqueue.c:1728 is_chained_work kernel/workqueue.c:1669 [inline] WARNING: CPU: 1 PID: 7312 at kernel/workqueue.c:1728 __queue_work+0xdb8/0x12bc kernel/workqueue.c:1727 Modules linked in: CPU: 1 PID: 7312 Comm: syz-executor.3 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 pstate: 004000c5 (nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __queue_work+0xdb8/0x12bc kernel/workqueue_internal.h:69 lr : current_wq_worker kernel/workqueue_internal.h:69 [inline] lr : is_chained_work kernel/workqueue.c:1669 [inline] lr : __queue_work+0xdb8/0x12bc kernel/workqueue.c:1727 sp : ffff800080017b70 x29: ffff800080017bb0 x28: 1fffe0002451cb41 x27: dfff800000000000 x26: dfff800000000000 x25: ffff0000c825b400 x24: 0000000000000008 x23: ffff0000c825b5c0 x22: ffff0001228e5a08 x21: 0000000000000100 x20: ffff0001228e5a00 x19: ffff0000c6c5cc10 x18: 0000000000000000 x17: ffff800125436000 x16: ffff80008ad6b09c x15: 0000000000000002 x14: ffff80008eca0458 x13: dfff800000000000 x12: 00000000a5a2aabc x11: 000000000fbea36d x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0001228e5a00 x7 : ffff80008042755c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008d4611c0 x2 : ffff0000c6c5cc10 x1 : 0000000000000100 x0 : 0000000000000000 Call trace: current_wq_worker kernel/workqueue_internal.h:69 [inline] is_chained_work kernel/workqueue.c:1669 [inline] __queue_work+0xdb8/0x12bc kernel/workqueue.c:1727 delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:1931 call_timer_fn+0x19c/0x8d4 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1746 [inline] __run_timers+0x57c/0x6fc kernel/time/timer.c:2038 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:2051 __do_softirq+0x2d8/0xce4 kernel/softirq.c:553 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:434 [inline] __irq_exit_rcu+0x1d8/0x434 kernel/softirq.c:632 irq_exit_rcu+0x14/0x84 kernel/softirq.c:644 __el1_irq arch/arm64/kernel/entry-common.c:537 [inline] el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:551 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:556 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:594 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:176 [inline] arch_local_irq_restore arch/arm64/include/asm/irqflags.h:196 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 stack_depot_save_flags+0x248/0x674 lib/stackdepot.c:710 kasan_save_stack mm/kasan/common.c:48 [inline] kasan_save_track+0x54/0x78 mm/kasan/common.c:68 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:575 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:3981 [inline] __kmalloc+0x2bc/0x5d4 mm/slub.c:3994 kmalloc include/linux/slab.h:594 [inline] kzalloc include/linux/slab.h:711 [inline] __register_sysctl_table+0x70/0x1144 fs/proc/proc_sysctl.c:1360 register_net_sysctl_sz+0x394/0x3e0 net/sysctl_net.c:179 mpls_dev_sysctl_register+0x1a0/0x264 net/mpls/af_mpls.c:1422 mpls_add_dev net/mpls/af_mpls.c:1478 [inline] mpls_dev_notify+0x16c/0x658 net/mpls/af_mpls.c:1618 notifier_call_chain+0x1a4/0x510 kernel/notifier.c:93 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:461 call_netdevice_notifiers_info net/core/dev.c:1966 [inline] call_netdevice_notifiers_extack net/core/dev.c:2004 [inline] call_netdevice_notifiers+0x13c/0x1bc net/core/dev.c:2018 register_netdevice+0xd4c/0x1108 net/core/dev.c:10294 veth_newlink+0x50c/0xb64 drivers/net/veth.c:1915 rtnl_newlink_create net/core/rtnetlink.c:3518 [inline] __rtnl_newlink net/core/rtnetlink.c:3738 [inline] rtnl_newlink+0x1184/0x1bcc net/core/rtnetlink.c:3751 rtnetlink_rcv_msg+0x748/0xdbc net/core/rtnetlink.c:6617 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2543 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6635 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x83c/0xb20 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x56c/0x840 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2667 __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2674 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 irq event stamp: 1561 hardirqs last enabled at (1560): [] __do_softirq+0x1bc/0xce4 kernel/softirq.c:537 hardirqs last disabled at (1561): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (1561): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (1538): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (1538): [] netif_addr_unlock_bh include/linux/netdevice.h:4606 [inline] softirqs last enabled at (1538): [] __dev_mc_add net/core/dev_addr_lists.c:872 [inline] softirqs last enabled at (1538): [] dev_mc_add+0xc4/0x110 net/core/dev_addr_lists.c:885 softirqs last disabled at (1559): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]--- vkms_vblank_simulate: vblank timer overrun