watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.0:13068] Modules linked in: irq event stamp: 214 hardirqs last enabled at (213): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline] hardirqs last enabled at (213): [] exit_to_kernel_mode+0x38/0x230 arch/arm64/kernel/entry-common.c:91 hardirqs last disabled at (214): [] enter_el1_irq_or_nmi+0x10/0x20 arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (146): [] _stext+0x964/0xff8 softirqs last disabled at (11): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (11): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (11): [] __irq_exit_rcu+0x208/0x4f0 kernel/softirq.c:636 CPU: 0 PID: 13068 Comm: syz-executor.0 Not tainted 5.15.0-rc6-syzkaller #0 Hardware name: linux,dummy-virt (DT) pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : clear_page+0x14/0x28 arch/arm64/lib/clear_page.S:23 lr : clear_highpage include/linux/highmem.h:181 [inline] lr : kernel_init_free_pages.part.0+0x6c/0x17c mm/page_alloc.c:1278 sp : ffff8000192e7320 x29: ffff8000192e7320 x28: 0000000000000000 x27: ffff00007fc11ec0 x26: ffff00000a242ef8 x25: ffff6000014485df x24: 00000000000014b8 x23: ffff00000a241a40 x22: fffffc0000173f40 x21: ffff8000157bcad8 x20: dfff800000000000 x19: fffffc0000173f00 x18: fffffbffeff9bec8 x17: ffff800054f68000 x16: ffff800010008000 x15: fffffbffeff9befc x14: 1ffff0000325ce2e x13: 0000000000000013 x12: ffff7f800002e7e7 x11: 1fffff800002e7e6 x10: ffff7f800002e7e6 x9 : 0000000000000000 x8 : ffff600000b9fa00 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 1ffff00003067da8 x3 : 1fffe00001448349 x2 : 0000000000000004 x1 : 0000000000000040 x0 : ffff000005cfc8c0 Call trace: clear_page+0x14/0x28 arch/arm64/lib/clear_page.S:21 kernel_init_free_pages mm/page_alloc.c:1275 [inline] post_alloc_hook+0x1ac/0x25c mm/page_alloc.c:2414 prep_new_page mm/page_alloc.c:2424 [inline] get_page_from_freelist+0x1844/0x2314 mm/page_alloc.c:4153 __alloc_pages+0x1a8/0x21d0 mm/page_alloc.c:5375 alloc_pages_vma+0xbc/0x560 mm/mempolicy.c:2158 wp_page_copy+0x194/0x1660 mm/memory.c:3003 do_wp_page+0x1d8/0xbec mm/memory.c:3313 handle_pte_fault mm/memory.c:4577 [inline] __handle_mm_fault+0xd4c/0x2210 mm/memory.c:4694 handle_mm_fault+0x1dc/0x4f0 mm/memory.c:4792 __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 el1_abort+0x3c/0x60 arch/arm64/kernel/entry-common.c:357 el1h_64_sync_handler+0xb4/0xd0 arch/arm64/kernel/entry-common.c:408 el1h_64_sync+0x78/0x7c arch/arm64/kernel/entry.S:567 schedule_tail+0x15c/0x1b0 kernel/sched/core.c:4880 ret_from_fork+0x4/0x20 arch/arm64/kernel/entry.S:753