watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [aoe_tx0:2413] Modules linked in: irq event stamp: 69613813 hardirqs last enabled at (69613812): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (69613812): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (69613813): [] __el1_irq arch/arm64/kernel/entry-common.c:650 [inline] hardirqs last disabled at (69613813): [] el1_interrupt+0x24/0x54 arch/arm64/kernel/entry-common.c:668 softirqs last enabled at (3860): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (3864): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 1 UID: 0 PID: 2413 Comm: aoe_tx0 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 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 : ffff8000a28a76d0 x29: ffff8000a28a76d0 x28: ffff0000d4671e30 x27: 0000000000000000 x26: ffff0000d4671dc0 x25: ffff0000d4671e98 x24: dfff800000000000 x23: 0000000000000003 x22: 0000000000000000 x21: ffff800091382c40 x20: ffff800097897d40 x19: 0000000000000000 x18: 00000000ffffffff x17: ffff800093507000 x16: ffff8000805293e8 x15: 0000000000000001 x14: 1ffff00012f12fa8 x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093306be8 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff800083e11828 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000002 x1 : ffff80008edc258c x0 : ffff80010c5fd000 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+0xc4/0x130 drivers/tty/serial/serial_core.c:629 handle_tx+0x200/0x5fc drivers/net/caif/caif_serial.c:222 caif_xmit+0x108/0x150 drivers/net/caif/caif_serial.c:268 __netdev_start_xmit include/linux/netdevice.h:5219 [inline] netdev_start_xmit include/linux/netdevice.h:5228 [inline] xmit_one net/core/dev.c:3827 [inline] dev_hard_start_xmit+0x2b0/0x890 net/core/dev.c:3843 __dev_queue_xmit+0x1600/0x32a8 net/core/dev.c:4713 dev_queue_xmit include/linux/netdevice.h:3358 [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: 6166 Comm: udevd Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : find_stack+0x34/0x17c lib/stackdepot.c:601 lr : stack_depot_save_flags+0x1b4/0x6dc lib/stackdepot.c:668 sp : ffff8000a05077c0 x29: ffff8000a05077c0 x28: 0000000000000000 x27: 1fffe0001d24a191 x26: 000000000021a008 x25: 0000000000000010 x24: ffff00019a69dbf0 x23: 0000000000000000 x22: 00000000a3b6cebf x21: 0000000000000000 x20: ffff0000c3fdbd00 x19: ffff00019a69dbf0 x18: 0000000000000000 x17: 0000000000000000 x16: ffff800080219494 x15: 0000000000000001 x14: 000000008b002094 x13: 0000000005d8f055 x12: 00000000c9aca064 x11: 000000004c9cbe94 x10: 0000000071555ddc x9 : ffff000199fcf000 x8 : 0000000000000001 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000001 x3 : 00000000a3b6cebf x2 : 0000000000000010 x1 : ffff8000a0507880 x0 : ffff0000c7a0d8d0 Call trace: find_stack+0x34/0x17c lib/stackdepot.c:601 (P) stack_depot_save_flags+0x1b4/0x6dc lib/stackdepot.c:668 kasan_save_stack mm/kasan/common.c:48 [inline] kasan_save_track+0x54/0x78 mm/kasan/common.c:68 kasan_save_free_info+0x58/0x70 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:243 [inline] __kasan_slab_free+0x74/0x98 mm/kasan/common.c:275 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2417 [inline] slab_free mm/slub.c:4680 [inline] kfree+0x17c/0x474 mm/slub.c:4879 kvfree+0x30/0x40 mm/slub.c:5095 seq_release+0x58/0x7c fs/seq_file.c:355 kernfs_fop_release+0x134/0x190 fs/kernfs/file.c:766 __fput+0x340/0x75c fs/file_table.c:468 fput_close_sync+0x100/0x224 fs/file_table.c:573 __do_sys_close fs/open.c:1587 [inline] __se_sys_close fs/open.c:1572 [inline] __arm64_sys_close+0x7c/0x118 fs/open.c:1572 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596