watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [aoe_tx0:2404] Modules linked in: irq event stamp: 27999267 hardirqs last enabled at (27999266): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (27999266): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (27999267): [] __el1_irq arch/arm64/kernel/entry-common.c:650 [inline] hardirqs last disabled at (27999267): [] el1_interrupt+0x24/0x54 arch/arm64/kernel/entry-common.c:668 softirqs last enabled at (1852): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1856): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 1 UID: 0 PID: 2404 Comm: aoe_tx0 Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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 : ffff8000a14e76d0 x29: ffff8000a14e76d0 x28: ffff0000fc6156b0 x27: 0000000000000000 x26: ffff0000fc615640 x25: ffff0000fc615718 x24: dfff800000000000 x23: 0000000000000003 x22: 0000000000000000 x21: ffff800091212840 x20: ffff800097716160 x19: 0000000000000000 x18: 0000000000000000 x17: ffff800093376000 x16: ffff80008051f01c x15: 0000000000000001 x14: 1ffff00012ee2c2c x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093175c08 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff800083d695e4 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000002 x1 : ffff80008ec5712e x0 : ffff80010c8e2000 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:5215 [inline] netdev_start_xmit include/linux/netdevice.h:5224 [inline] xmit_one net/core/dev.c:3830 [inline] dev_hard_start_xmit+0x2b0/0x890 net/core/dev.c:3846 __dev_queue_xmit+0x15a4/0x31f0 net/core/dev.c:4713 dev_queue_xmit include/linux/netdevice.h:3355 [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:464 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: 8681 Comm: syz-executor Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_kcov_mode kernel/kcov.c:185 [inline] pc : write_comp_data kernel/kcov.c:246 [inline] pc : __sanitizer_cov_trace_const_cmp4+0x4c/0xa0 kernel/kcov.c:314 lr : folio_test_hugetlb include/linux/page-flags.h:1089 [inline] lr : __folio_rmap_sanity_checks include/linux/rmap.h:411 [inline] lr : __folio_remove_rmap mm/rmap.c:1694 [inline] lr : folio_remove_rmap_ptes+0x78/0xbe0 mm/rmap.c:1804 sp : ffff80009cdd7170 x29: ffff80009cdd71c0 x28: dfff800000000000 x27: ffff00010c833a00 x26: 0000000000000000 x25: dfff800000000000 x24: 0000000000000001 x23: fffffdffc43d6b30 x22: 0000000000000000 x21: fffffdffc43d6b00 x20: 00000000f4000000 x19: fffffdffc43d6b00 x18: 0000000000000000 x17: ffff0001fea8b870 x16: ffff80008af01d78 x15: 0000000000000001 x14: 1fffffbff887ad60 x13: 0000000000000000 x12: 0000000000000000 x11: ffff80009cdd7698 x10: 0000000000ff0100 x9 : 0000000000000001 x8 : ffff0000d40d5b80 x7 : ffff800080ce3d7c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff00010c833a00 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 00000000f4000000 Call trace: check_kcov_mode kernel/kcov.c:183 [inline] (P) write_comp_data kernel/kcov.c:246 [inline] (P) __sanitizer_cov_trace_const_cmp4+0x4c/0xa0 kernel/kcov.c:314 (P) zap_present_folio_ptes mm/memory.c:1529 [inline] zap_present_ptes mm/memory.c:1590 [inline] do_zap_pte_range mm/memory.c:1691 [inline] zap_pte_range mm/memory.c:1735 [inline] zap_pmd_range mm/memory.c:1827 [inline] zap_pud_range mm/memory.c:1856 [inline] zap_p4d_range mm/memory.c:1877 [inline] unmap_page_range+0x12fc/0x3180 mm/memory.c:1898 unmap_single_vma mm/memory.c:1941 [inline] unmap_vmas+0x264/0x3d4 mm/memory.c:1985 exit_mmap+0x1bc/0xabc mm/mmap.c:1284 __mmput+0xec/0x3dc kernel/fork.c:1121 mmput+0x70/0xac kernel/fork.c:1144 exit_mm+0x13c/0x200 kernel/exit.c:581 do_exit+0x4bc/0x19fc kernel/exit.c:952 do_group_exit+0x194/0x22c kernel/exit.c:1105 get_signal+0x11dc/0x12f8 kernel/signal.c:3034 do_signal+0x274/0x4434 arch/arm64/kernel/signal.c:1618 do_notify_resume+0xb0/0x1f4 arch/arm64/kernel/entry-common.c:152 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:173 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:182 [inline] el0_svc+0xb8/0x180 arch/arm64/kernel/entry-common.c:880 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596