------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci0 WARNING: kernel/workqueue.c:2298 at __queue_work+0xfd4/0x136c kernel/workqueue.c:2296, CPU#1: syz.4.54/5113 Modules linked in: CPU: 1 UID: 0 PID: 5113 Comm: syz.4.54 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __queue_work+0xfd4/0x136c kernel/workqueue.c:2296 lr : __queue_work+0xfd4/0x136c kernel/workqueue.c:2296 sp : ffff80008e8f7b10 x29: ffff80008e8f7b50 x28: dfff800000000000 x27: ffff700011d1ef84 x26: ffff0000d3ee3000 x25: 0000000000000008 x24: ffff0000d3ee31c0 x23: dfff800000000000 x22: ffff0000d7acba08 x21: ffff800089f18000 x20: ffff0000dc34ca70 x19: ffff0000dc34ca58 x18: 00000000ffffffff x17: ffff80012588a000 x16: ffff80008e8f0000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000ff0100 x9 : 1afc239135022600 x8 : 1afc239135022600 x7 : ffff80008047caa0 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000802f1374 x2 : 0000000000000100 x1 : ffff0000d7acba00 x0 : 0000000000000000 Call trace: __queue_work+0xfd4/0x136c kernel/workqueue.c:2296 (P) delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:2539 call_timer_fn+0x194/0xa3c kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1794 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x554/0x74c kernel/time/timer.c:2386 run_timer_base+0x84/0x1b8 kernel/time/timer.c:2395 run_timer_softirq+0x20/0x48 kernel/time/timer.c:2405 handle_softirqs+0x2e4/0xd34 kernel/softirq.c:622 __do_softirq+0x14/0x20 kernel/softirq.c:656 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:889 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83 invoke_softirq kernel/softirq.c:503 [inline] __irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735 irq_exit_rcu+0x14/0x84 kernel/softirq.c:752 __el1_irq arch/arm64/kernel/entry-common.c:514 [inline] el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:526 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:531 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:590 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P) __local_bh_enable_ip+0x1f0/0x35c kernel/softirq.c:455 (P) __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:196 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:214 spin_unlock_bh include/linux/spinlock.h:396 [inline] addrconf_ifdown+0x444/0x1198 net/ipv6/addrconf.c:3919 addrconf_notify+0x2c0/0xbe4 net/ipv6/addrconf.c:-1 notifier_call_chain+0x194/0x60c kernel/notifier.c:85 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453 call_netdevice_notifiers_info+0xb8/0x120 net/core/dev.c:2249 call_netdevice_notifiers_extack net/core/dev.c:2287 [inline] call_netdevice_notifiers net/core/dev.c:2301 [inline] __dev_notify_flags+0x13c/0x27c net/core/dev.c:9799 netif_change_flags+0xd0/0x15c net/core/dev.c:9826 do_setlink+0xab0/0x31c0 net/core/rtnetlink.c:3181 rtnl_group_changelink net/core/rtnetlink.c:3814 [inline] __rtnl_newlink net/core/rtnetlink.c:3982 [inline] rtnl_newlink+0xc74/0x113c net/core/rtnetlink.c:4110 rtnetlink_rcv_msg+0x66c/0x9c8 net/core/rtnetlink.c:6996 netlink_rcv_skb+0x22c/0x410 net/netlink/af_netlink.c:2550 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:7023 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x610/0x800 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x63c/0x920 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg+0xc8/0x138 net/socket.c:802 ____sys_sendmsg+0x418/0x70c net/socket.c:2698 ___sys_sendmsg+0x198/0x224 net/socket.c:2752 __sys_sendmsg+0x160/0x214 net/socket.c:2784 __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2787 __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 irq event stamp: 52751 hardirqs last enabled at (52750): [] handle_softirqs+0x1cc/0xd34 kernel/softirq.c:606 hardirqs last disabled at (52751): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:140 [inline] hardirqs last disabled at (52751): [] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:174 softirqs last enabled at (52746): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (52746): [] addrconf_ifdown+0x444/0x1198 net/ipv6/addrconf.c:3919 softirqs last disabled at (52749): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]---