watchdog: BUG: soft lockup - CPU#1 stuck for 27s! [aoe_tx0:2217] Modules linked in: irq event stamp: 53405933 hardirqs last enabled at (53405932): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (53405932): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (53405933): [] __el1_irq arch/arm64/kernel/entry-common.c:499 [inline] hardirqs last disabled at (53405933): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:517 softirqs last enabled at (4760): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (4764): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 1 PID: 2217 Comm: aoe_tx0 Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 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 : ffff80009c4e7800 x29: ffff80009c4e7800 x28: ffff0000cfd15070 x27: ffff0000cfd15000 x26: ffff0000d2394ce8 x25: ffff000123ef4020 x24: 0000000000000001 x23: 0000000000000000 x22: 0000000000000000 x21: dfff800000000000 x20: ffff800092d78060 x19: 0000000000000000 x18: ffff80009c4e74c0 x17: 0000000000035381 x16: ffff800080318564 x15: 0000000000000001 x14: 1ffff000125af00c x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000202 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff800083874cc8 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff80008a99d720 x0 : ffff800125d0c000 Call trace: __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 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] uart_port_unlock_irqrestore include/linux/serial_core.h:667 [inline] uart_write_room+0x140/0x2d0 drivers/tty/serial/serial_core.c:630 tty_write_room+0x6c/0x8c drivers/tty/tty_ioctl.c:69 handle_tx+0x120/0x604 drivers/net/caif/caif_serial.c:226 caif_xmit+0x108/0x150 drivers/net/caif/caif_serial.c:282 __netdev_start_xmit include/linux/netdevice.h:4940 [inline] netdev_start_xmit include/linux/netdevice.h:4954 [inline] xmit_one net/core/dev.c:3548 [inline] dev_hard_start_xmit+0x240/0x8ac net/core/dev.c:3564 __dev_queue_xmit+0x1570/0x31d8 net/core/dev.c:4349 dev_queue_xmit include/linux/netdevice.h:3134 [inline] tx+0x90/0x134 drivers/block/aoe/aoenet.c:62 kthread+0x1ac/0x374 drivers/block/aoe/aoecmd.c:1229 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6147 Comm: syz-executor.2 Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 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 : ffff8000972c7640 x29: ffff8000972c7640 x28: 0000000000000000 x27: 1ffff00012e58ed0 x26: 1ffff00012e58ecc x25: dfff800000000000 x24: ffff8000972c7680 x23: 0000000000000000 x22: 0000000000000009 x21: 0000000000000001 x20: ffff000124d05c80 x19: 0000000000000000 x18: ffff8000972c6f00 x17: 0000000000037690 x16: ffff800080318564 x15: 0000000000000001 x14: 1fffe000249a0b90 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000002 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000007 x1 : ffff80008a99d720 x0 : ffff800125cea000 Call trace: __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 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] unlock_task_sighand include/linux/sched/signal.h:753 [inline] do_send_sig_info kernel/signal.c:1311 [inline] group_send_sig_info+0x2b4/0x2d4 kernel/signal.c:1460 zap_pid_ns_processes+0x23c/0x608 kernel/pid_namespace.c:208 find_child_reaper kernel/exit.c:608 [inline] forget_original_parent kernel/exit.c:697 [inline] exit_notify kernel/exit.c:734 [inline] do_exit+0x1830/0x1f64 kernel/exit.c:889 do_group_exit+0x194/0x22c kernel/exit.c:1018 get_signal+0x1500/0x15ec kernel/signal.c:2904 do_signal arch/arm64/kernel/signal.c:1249 [inline] do_notify_resume+0x3bc/0x393c arch/arm64/kernel/signal.c:1302 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline] el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595