syzbot

watchdog: BUG: soft lockup - CPU#0 stuck for 24s! [syz-executor.1:17447]
Modules linked in:
irq event stamp: 694
hardirqs last  enabled at (693): [<ffff8000146cc738>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:82 [inline]
hardirqs last  enabled at (693): [<ffff8000146cc738>] exit_to_kernel_mode+0x38/0x210 arch/arm64/kernel/entry-common.c:92
hardirqs last disabled at (694): [<ffff8000146cf074>] __el1_irq arch/arm64/kernel/entry-common.c:435 [inline]
hardirqs last disabled at (694): [<ffff8000146cf074>] el1_interrupt+0x24/0x50 arch/arm64/kernel/entry-common.c:460
softirqs last  enabled at (564): [<ffff8000100109ec>] _stext+0x9ec/0x101c
softirqs last disabled at (479): [<ffff800010162e78>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (479): [<ffff800010162e78>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (479): [<ffff800010162e78>] __irq_exit_rcu+0x3d8/0x5d0 kernel/softirq.c:636
CPU: 0 PID: 17447 Comm: syz-executor.1 Not tainted 5.15.0-syzkaller-12871-ga9b9669d9822 #0
Hardware name: linux,dummy-virt (DT)
pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : copy_page+0x38/0xd0 arch/arm64/lib/copy_page.S:40
lr : copy_highpage+0x80/0x170 arch/arm64/mm/copypage.c:22
sp : ffff800019bc7980
x29: ffff800019bc7980 x28: ffff800019bc7c90 x27: ffff000010fb5630
x26: 1fffe000021f6ace x25: 1ffff00003378f99 x24: 1ffff00003378f92
x23: ffff00000e29ae00 x22: fffffc0000b7b900 x21: fffffc0000177f00
x20: ffff000005dfc000 x19: ffff00002dee4000 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000
x2 : 0000000000000000 x1 : ffff00002dee4200 x0 : ffff000005dfc280
Call trace:
 copy_page+0x38/0xd0 arch/arm64/lib/copy_page.S:38
 copy_user_highpage+0x18/0x50 arch/arm64/mm/copypage.c:43
 cow_user_page mm/memory.c:2741 [inline]
 wp_page_copy+0x1dc/0x16d0 mm/memory.c:2994
 do_wp_page+0x1d8/0xbf0 mm/memory.c:3299
 handle_pte_fault mm/memory.c:4569 [inline]
 __handle_mm_fault+0xd88/0x21e0 mm/memory.c:4686
 handle_mm_fault+0x208/0x520 mm/memory.c:4784
 __do_page_fault arch/arm64/mm/fault.c:499 [inline]
 do_page_fault+0x228/0x910 arch/arm64/mm/fault.c:599
 do_mem_abort+0x64/0x1c0 arch/arm64/mm/fault.c:813
 el0_da+0x7c/0x2a0 arch/arm64/kernel/entry-common.c:489
 el0t_64_sync_handler+0x168/0x1b0 arch/arm64/kernel/entry-common.c:624
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:572