watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [aoe_tx0:2408] Modules linked in: irq event stamp: 31883837 hardirqs last enabled at (31883836): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (31883836): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (31883837): [] __el1_irq arch/arm64/kernel/entry-common.c:650 [inline] hardirqs last disabled at (31883837): [] el1_interrupt+0x24/0x54 arch/arm64/kernel/entry-common.c:668 softirqs last enabled at (1876): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1880): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 1 UID: 0 PID: 2408 Comm: aoe_tx0 Not tainted 6.16.0-rc4-syzkaller-g7482bb149b9f #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 : ffff8000a19476d0 x29: ffff8000a19476d0 x28: ffff00010de0b1b0 x27: 0000000000000000 x26: ffff00010de0b140 x25: ffff00010de0b218 x24: dfff800000000000 x23: 0000000000000003 x22: 0000000000000000 x21: ffff8000912017a0 x20: ffff800097703180 x19: 0000000000000000 x18: 00000000ffffffff x17: ffff800093363000 x16: ffff80008052051c x15: 0000000000000001 x14: 1ffff00012ee0630 x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093162c08 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff800083d6a054 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000002 x1 : ffff80008ec4427a x0 : ffff80010c904000 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:847 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6514 Comm: sshd-session Not tainted 6.16.0-rc4-syzkaller-g7482bb149b9f #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : qlist_free_all+0x3c/0xb8 mm/kasan/quarantine.c:179 lr : virt_to_phys arch/arm64/include/asm/memory.h:367 [inline] lr : virt_to_pfn arch/arm64/include/asm/memory.h:381 [inline] lr : virt_to_folio include/linux/mm.h:1178 [inline] lr : virt_to_slab mm/slab.h:211 [inline] lr : qlink_to_cache mm/kasan/quarantine.c:131 [inline] lr : qlist_free_all+0x64/0xb8 mm/kasan/quarantine.c:176 sp : ffff8000a23c7370 x29: ffff8000a23c7370 x28: ffff80008f66e000 x27: ffff0000f3f130c0 x26: 00000000ffffffff x25: 00000000000002c0 x24: ffff0000d36296c0 x23: ffffc1ffc0000000 x22: ffff80008ef66000 x21: ffff0000f7021028 x20: 0000000000000000 x19: ffff8000a23c73b0 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80008052051c x15: 0000000000000001 x14: 1ffff00012eb9ec0 x13: 0000000000000000 x12: 0000000000000000 x11: ffff800093162c08 x10: fffffdffc3dc0800 x9 : 00000000000000f5 x8 : fffffdffc3dc0800 x7 : ffff800083094ba8 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010 x2 : 0000000000000007 x1 : ffff0000c18b28c0 x0 : 0000000137021028 Call trace: qlist_free_all+0x3c/0xb8 mm/kasan/quarantine.c:177 (P) kasan_quarantine_reduce+0x118/0x124 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x2c/0x88 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4148 [inline] slab_alloc_node mm/slub.c:4197 [inline] kmem_cache_alloc_node_noprof+0x240/0x3f4 mm/slub.c:4249 kmalloc_reserve+0xc4/0x268 net/core/skbuff.c:579 __alloc_skb+0x170/0x2ec net/core/skbuff.c:670 alloc_skb_fclone include/linux/skbuff.h:1386 [inline] tcp_stream_alloc_skb+0x44/0x2c4 net/ipv4/tcp.c:894 tcp_sendmsg_locked+0xdb0/0x4758 net/ipv4/tcp.c:1200 tcp_sendmsg+0x40/0x64 net/ipv4/tcp.c:1396 inet_sendmsg+0x154/0x284 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] sock_write_iter+0x25c/0x378 net/socket.c:1131 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x62c/0x97c fs/read_write.c:686 ksys_write+0x120/0x210 fs/read_write.c:738 __do_sys_write fs/read_write.c:749 [inline] __se_sys_write fs/read_write.c:746 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:746 __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:600