watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [aoe_tx0:2281] Modules linked in: irq event stamp: 46656231 hardirqs last enabled at (46656230): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (46656230): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (46656231): [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (46656231): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (1050): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1054): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 0 PID: 2281 Comm: aoe_tx0 Not tainted 6.9.0-rc3-syzkaller-gfec50db7033e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_kcov_mode kernel/kcov.c:175 [inline] pc : __sanitizer_cov_trace_pc+0x34/0x6c kernel/kcov.c:207 lr : tty_write_room+0x64/0x8c drivers/tty/tty_ioctl.c:69 sp : ffff80009ce07850 x29: ffff80009ce07860 x28: ffff0001170a9cf0 x27: ffff0001170a9c80 x26: ffff0000d5e8acc8 x25: ffff0000ef343020 x24: 0000000000000000 x23: ffff0000d5e8acd0 x22: 0000000000000020 x21: dfff800000000000 x20: ffff800083c60ddc x19: ffff0000ef343000 x18: ffff80009ce074c0 x17: 000000000000e389 x16: ffff800080554304 x15: 0000000000000001 x14: 1fffe0001928a1fc x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001928a1fd x10: 0000000000ff0100 x9 : 0000000000000201 x8 : ffff0000ccd9bc80 x7 : ffff800083c60588 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff800083c607c4 x2 : 0000000000000001 x1 : 0000000000000020 x0 : ffff0000ef343000 Call trace: check_kcov_mode kernel/kcov.c:173 [inline] __sanitizer_cov_trace_pc+0x34/0x6c kernel/kcov.c:207 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:4903 [inline] netdev_start_xmit include/linux/netdevice.h:4917 [inline] xmit_one net/core/dev.c:3531 [inline] dev_hard_start_xmit+0x27c/0x938 net/core/dev.c:3547 __dev_queue_xmit+0x15c8/0x32c8 net/core/dev.c:4335 dev_queue_xmit include/linux/netdevice.h:3091 [inline] tx+0x9c/0x1cc 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:860 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc3-syzkaller-gfec50db7033e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:51 lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:124 sp : ffff800093ca7d10 x29: ffff800093ca7d10 x28: dfff800000000000 x27: 1ffff00012794fb0 x26: ffff80008ee7d000 x25: 0000000000000000 x24: 0000000000000002 x23: 1ffff00011dcfaad x22: ffff80008ee7d568 x21: 0000000000000000 x20: ffff0000c19e5ac0 x19: ffff8000802e26f8 x18: 1fffe000367be196 x17: ffff80008ee7d000 x16: ffff8000802e1fbc x15: 0000000000000001 x14: 1fffe000367bfef8 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000000 x8 : 000000000004b931 x7 : ffff8000804794e4 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008ae6cbe0 x2 : 0000000000000000 x1 : ffff80008afdfb40 x0 : ffff80012501f000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:27 [inline] arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:49 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x1f0/0x4e4 kernel/sched/idle.c:332 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:430 secondary_start_kernel+0x1bc/0x1e4 arch/arm64/kernel/smp.c:272 __secondary_switched+0xb8/0xbc arch/arm64/kernel/head.S:414