watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [aoe_tx0:2455] Modules linked in: irq event stamp: 67934331 hardirqs last enabled at (67934330): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (67934330): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (67934331): [] enter_from_kernel_mode+0x14/0x34 arch/arm64/kernel/entry-common.c:42 softirqs last enabled at (1154): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1158): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 1 UID: 0 PID: 2455 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 sp : ffff8000a21576c0 x29: ffff8000a21576c0 x28: ffff0000d510bbb0 x27: 0000000000000000 x26: ffff0000d510bb40 x25: ffff0000c937e238 x24: dfff800000000000 x23: 0000000000000003 x22: 0000000000000000 x21: ffff8000911b18c0 x20: ffff8000976d7f60 x19: 0000000000000000 x18: 00000000ffffffff x17: ffff800093325000 x16: ffff80008052bd88 x15: 0000000000000001 x14: 1ffff00012edafec x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093124c88 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff800083b31bc4 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000002 x1 : ffff80008eb9b3b1 x0 : ffff80010c9ee000 Call trace: __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 (P) spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] uart_port_unlock_irqrestore include/linux/serial_core.h:788 [inline] uart_port_unlock_deref+0x108/0x2ec drivers/tty/serial/serial_core.c:91 uart_write_room+0xa4/0x15c drivers/tty/serial/serial_core.c:647 tty_write_room+0x6c/0x8c drivers/tty/tty_ioctl.c:69 handle_tx+0x128/0x5fc drivers/net/caif/caif_serial.c:212 caif_xmit+0x108/0x150 drivers/net/caif/caif_serial.c:268 __netdev_start_xmit include/linux/netdevice.h:5248 [inline] netdev_start_xmit include/linux/netdevice.h:5257 [inline] xmit_one net/core/dev.c:3845 [inline] dev_hard_start_xmit+0x2b0/0x890 net/core/dev.c:3861 __dev_queue_xmit+0x1600/0x32a8 net/core/dev.c:4763 dev_queue_xmit include/linux/netdevice.h:3365 [inline] tx+0x9c/0x1cc drivers/block/aoe/aoenet.c:62 kthread+0x164/0x354 drivers/block/aoe/aoecmd.c:1241 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 7279 Comm: kworker/u8:9 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: events_unbound cfg80211_wiphy_work pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] pc : _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 lr : __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] lr : _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 sp : ffff8000a47d6c30 x29: ffff8000a47d6c30 x28: ffff0000d7c8fc00 x27: ffff7000148fadb4 x26: ffff800097634250 x25: 0000000000000001 x24: 0000000000000011 x23: 0000000000000000 x22: ffff0000d7c8f000 x21: dfff800000000000 x20: ffff800097634258 x19: 0000000000000000 x18: 00000000ffffffff x17: ffff800093325000 x16: ffff80008052bd88 x15: 0000000000000001 x14: 1ffff00012ec684b x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093124c88 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff800082df0548 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000002 x1 : ffff80008eb9b3b1 x0 : ffff80010c9ca000 Call trace: __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 (P) __debug_check_no_obj_freed lib/debugobjects.c:1108 [inline] debug_check_no_obj_freed+0x454/0x470 lib/debugobjects.c:1129 slab_free_hook mm/slub.c:2474 [inline] slab_free mm/slub.c:6642 [inline] kfree+0x120/0x600 mm/slub.c:6849 ieee80211_inform_bss+0x8e4/0xd10 net/mac80211/scan.c:160 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline] cfg80211_inform_single_bss_data+0xaac/0x1744 net/wireless/scan.c:2385 cfg80211_inform_bss_data+0x1a4/0x2fd8 net/wireless/scan.c:3240 cfg80211_inform_bss_frame_data+0x32c/0x738 net/wireless/scan.c:3331 ieee80211_bss_info_update+0x640/0x8b8 net/mac80211/scan.c:226 ieee80211_rx_bss_info net/mac80211/ibss.c:1094 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1573 [inline] ieee80211_ibss_rx_queued_mgmt+0x13d0/0x2420 net/mac80211/ibss.c:1600 ieee80211_iface_process_skb net/mac80211/iface.c:1702 [inline] ieee80211_iface_work+0x754/0x106c net/mac80211/iface.c:1756 cfg80211_wiphy_work+0x294/0x49c net/wireless/core.c:435 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844