watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [aoe_tx0:2377] Modules linked in: irq event stamp: 43158527 hardirqs last enabled at (43158526): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (43158526): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (43158527): [] __el1_irq arch/arm64/kernel/entry-common.c:557 [inline] hardirqs last disabled at (43158527): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:575 softirqs last enabled at (1088): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1092): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 0 UID: 0 PID: 2377 Comm: aoe_tx0 Not tainted 6.14.0-rc7-syzkaller-ga2392f333575 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 80400005 (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 : ffff8000a24276b0 x29: ffff8000a24276b0 x28: ffff0000d6d9ee30 x27: dfff800000000000 x26: 0000000000000000 x25: ffff8000917f10a0 x24: ffff0000ca040f48 x23: 0000000000000003 x22: 0000000000000000 x21: ffff8000917f10a0 x20: ffff800097da8900 x19: 0000000000000000 x18: ffff8000a2427360 x17: 000000000002dce8 x16: ffff80008046a530 x15: 0000000000000001 x14: 1ffff00012fb5120 x13: ffff8000a2428000 x12: 0000000000000003 x11: 0000000000000202 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff80008402aca4 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff80008b90a760 x0 : ffff800123ab0000 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:786 [inline] uart_write+0x4b0/0x9b4 drivers/tty/serial/serial_core.c:628 handle_tx+0x200/0x604 drivers/net/caif/caif_serial.c:236 caif_xmit+0x108/0x150 drivers/net/caif/caif_serial.c:282 __netdev_start_xmit include/linux/netdevice.h:5151 [inline] netdev_start_xmit include/linux/netdevice.h:5160 [inline] xmit_one net/core/dev.c:3800 [inline] dev_hard_start_xmit+0x274/0x904 net/core/dev.c:3816 __dev_queue_xmit+0x1680/0x35b4 net/core/dev.c:4652 dev_queue_xmit include/linux/netdevice.h:3313 [inline] tx+0x9c/0x1cc drivers/block/aoe/aoenet.c:62 kthread+0x1ac/0x374 drivers/block/aoe/aoecmd.c:1237 kthread+0x65c/0x7b0 kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 827 Comm: kworker/u8:9 Not tainted 6.14.0-rc7-syzkaller-ga2392f333575 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: events_unbound toggle_allocation_gate pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : csd_lock_wait kernel/smp.c:340 [inline] pc : smp_call_function_many_cond+0x19b4/0x3298 kernel/smp.c:885 lr : csd_lock_wait kernel/smp.c:340 [inline] lr : smp_call_function_many_cond+0x19cc/0x3298 kernel/smp.c:885 sp : ffff80009c3f76f0 x29: ffff80009c3f7830 x28: 1fffe000366ee721 x27: dfff800000000000 x26: ffff0001b3755d08 x25: 0000000000000000 x24: 0000000000000008 x23: ffffffffffffffff x22: 1fffe000366ee720 x21: 0000000000000011 x20: ffff0001b3773908 x19: ffff0001b3773900 x18: 1fffe000366eba86 x17: ffff80008fd3d000 x16: ffff8000832b867c x15: 0000000000000001 x14: 1fffe000366eaba1 x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000366eaba2 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000011 x7 : ffff80008015c53c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000805f1650 x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001 Call trace: __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:231 [inline] (P) __cmpwait arch/arm64/include/asm/cmpxchg.h:257 [inline] (P) csd_lock_wait kernel/smp.c:340 [inline] (P) smp_call_function_many_cond+0x19b4/0x3298 kernel/smp.c:885 (P) smp_call_function_many kernel/smp.c:909 [inline] smp_call_function kernel/smp.c:931 [inline] kick_all_cpus_sync+0x40/0xa0 kernel/smp.c:1076 arch_jump_label_transform_apply+0x14/0x20 arch/arm64/kernel/jump_label.c:34 __jump_label_update+0x30c/0x334 kernel/jump_label.c:521 jump_label_update+0x30c/0x3bc kernel/jump_label.c:920 static_key_enable_cpuslocked+0x140/0x230 kernel/jump_label.c:210 static_key_enable+0x24/0x38 kernel/jump_label.c:223 toggle_allocation_gate+0xc4/0x264 mm/kfence/core.c:850 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3400 kthread+0x65c/0x7b0 kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862