watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [aoe_tx0:2466] Modules linked in: irq event stamp: 65594003 hardirqs last enabled at (65594002): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (65594002): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (65594003): [] enter_from_kernel_mode+0x14/0x34 arch/arm64/kernel/entry-common.c:42 softirqs last enabled at (1306): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1310): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 CPU: 1 UID: 0 PID: 2466 Comm: aoe_tx0 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : kasan_check_range+0x1dc/0x2a4 mm/kasan/generic.c:-1 lr : __kasan_check_write+0x20/0x30 mm/kasan/shadow.c:37 sp : ffff8000a1cf7700 x29: ffff8000a1cf7700 x28: ffff0000c64be6b0 x27: 0000000000000000 x26: ffff0000c64be640 x25: ffff0000e226c238 x24: dfff800000000000 x23: 0000000000000003 x22: 1ffff00012f2993d x21: ffff8000914d0160 x20: ffff0000ca508f84 x19: ffff80009794c9e8 x18: 00000000ffffffff x17: ffff800093598000 x16: ffff80008053826c x15: 0000000000000001 x14: 1fffe000194a11f0 x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000194a11f1 x10: dfff800000000000 x9 : 1fffe000194a11f0 x8 : ffff0000ca508f87 x7 : ffff800083bc188c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff800083bc1c3c x2 : 0000000000000001 x1 : 0000000000000004 x0 : ffff0000ca508f84 Call trace: bytes_is_nonzero mm/kasan/generic.c:97 [inline] (P) memory_is_nonzero mm/kasan/generic.c:133 [inline] (P) memory_is_poisoned_n mm/kasan/generic.c:140 [inline] (P) memory_is_poisoned mm/kasan/generic.c:172 [inline] (P) check_region_inline mm/kasan/generic.c:191 [inline] (P) kasan_check_range+0x1dc/0x2a4 mm/kasan/generic.c:200 (P) __kasan_check_write+0x20/0x30 mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_dec_and_test include/linux/atomic/atomic-instrumented.h:1383 [inline] uart_port_deref drivers/tty/serial/serial_core.c:74 [inline] uart_port_unlock_deref+0x134/0x2ec drivers/tty/serial/serial_core.c:92 uart_write_room+0xa4/0x15c drivers/tty/serial/serial_core.c:647 tty_write_room+0x6c/0x8c drivers/tty/tty_ioctl.c:69 handle_tx+0x128/0x5fc drivers/net/caif/caif_serial.c:212 caif_xmit+0x108/0x150 drivers/net/caif/caif_serial.c:268 __netdev_start_xmit include/linux/netdevice.h:5273 [inline] netdev_start_xmit include/linux/netdevice.h:5282 [inline] xmit_one net/core/dev.c:3853 [inline] dev_hard_start_xmit+0x298/0x890 net/core/dev.c:3869 __dev_queue_xmit+0x10c4/0x2a68 net/core/dev.c:4817 dev_queue_xmit include/linux/netdevice.h:3381 [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: 6561 Comm: sshd-session Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 23400005 (nzCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : jhash2 include/linux/jhash.h:128 [inline] pc : hash_stack lib/stackdepot.c:563 [inline] pc : stack_depot_save_flags+0x84/0x6dc lib/stackdepot.c:664 lr : stack_depot_save_flags+0x44/0x6dc lib/stackdepot.c:659 sp : ffff8000a69c7580 x29: ffff8000a69c7590 x28: 0000000000000000 x27: 1fffe0001c2ab3d4 x26: 000000000029a100 x25: 0000000000000014 x24: 1ffff00011f0e28a x23: 0000000000000000 x22: 00000000acf060e5 x21: 0000000000000000 x20: ffff8000a69c75f0 x19: 0000000000000001 x18: 0000000000000000 x17: 0000000000000000 x16: ffff8000802126ac x15: 0000000000000001 x14: 00000000ffff8000 x13: 0000000047802aa0 x12: 00000000d4f2cae1 x11: 0000000081e27fc8 x10: 00000000c962aa68 x9 : 0000000000000007 x8 : ffff8000a69c7674 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : ffffffffffffffd0 x3 : 0000000000000001 x2 : 0000000000000000 x1 : 0000000000000014 x0 : 0000000000000014 Call trace: jhash2 include/linux/jhash.h:-1 [inline] (P) hash_stack lib/stackdepot.c:563 [inline] (P) stack_depot_save_flags+0x84/0x6dc lib/stackdepot.c:664 (P) kasan_save_stack mm/kasan/common.c:57 [inline] kasan_save_track+0x54/0x78 mm/kasan/common.c:77 kasan_save_free_info+0x58/0x70 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:252 [inline] __kasan_slab_free+0x74/0xa4 mm/kasan/common.c:284 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2540 [inline] slab_free mm/slub.c:6668 [inline] kmem_cache_free+0x184/0x6e4 mm/slub.c:6779 free_inode_nonrcu+0x28/0x38 fs/inode.c:317 destroy_inode fs/inode.c:396 [inline] evict+0x7cc/0xa74 fs/inode.c:861 iput_final fs/inode.c:1951 [inline] iput+0xc54/0xfdc fs/inode.c:2003 dentry_unlink_inode+0x384/0x45c fs/dcache.c:467 __dentry_kill+0x170/0x594 fs/dcache.c:670 finish_dput+0xe4/0x45c fs/dcache.c:879 dput+0x184/0x188 fs/dcache.c:928 __fput+0x51c/0x75c fs/file_table.c:476 fput_close_sync+0x100/0x264 fs/file_table.c:573 __do_sys_close fs/open.c:1573 [inline] __se_sys_close fs/open.c:1558 [inline] __arm64_sys_close+0x7c/0x118 fs/open.c:1558 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596