watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:2396] Modules linked in: irq event stamp: 4872 hardirqs last enabled at (4871): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:82 [inline] hardirqs last enabled at (4871): [] exit_to_kernel_mode+0x38/0x210 arch/arm64/kernel/entry-common.c:92 hardirqs last disabled at (4872): [] __el1_irq arch/arm64/kernel/entry-common.c:435 [inline] hardirqs last disabled at (4872): [] el1_interrupt+0x24/0x50 arch/arm64/kernel/entry-common.c:460 softirqs last enabled at (4202): [] _stext+0x9ec/0x101c softirqs last disabled at (4169): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (4169): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (4169): [] __irq_exit_rcu+0x3d8/0x5d0 kernel/softirq.c:636 CPU: 0 PID: 2396 Comm: syz-executor.0 Not tainted 5.15.0-syzkaller-11387-ge851dfae4371 #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:218 [inline] lr : kernel_init_free_pages.part.0+0x60/0xbc mm/page_alloc.c:1276 sp : ffff8000198b7070 x29: ffff8000198b7070 x28: 0000000000000000 x27: ffff00007fc13d80 x26: ffff00007fc13d80 x25: dfff800000000000 x24: 1fffff800002eee6 x23: fffffc0000177740 x22: fffffc0000000000 x21: ffff700002b11a46 x20: ffff80001588d230 x19: fffffc0000177740 x18: ffff00006aa41c08 x17: 0000000000000000 x16: 0000000000000000 x15: ffff00006aa41c3c x14: 1ffff00003316dcc x13: 0000000000000013 x12: ffff7f800002eee7 x11: 1fffff800002eee6 x10: ffff7f800002eee6 x9 : 0000000000000000 x8 : ffff600000bbba00 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : 0000000000000004 x2 : 0000000000000004 x1 : 0000000000000040 x0 : ffff000005ddc200 Call trace: clear_page+0x14/0x28 arch/arm64/lib/clear_page.S:21 kernel_init_free_pages mm/page_alloc.c:1273 [inline] post_alloc_hook+0x1ac/0x25c mm/page_alloc.c:2408 prep_new_page mm/page_alloc.c:2418 [inline] get_page_from_freelist+0x17a8/0x220c mm/page_alloc.c:4149 __alloc_pages+0x1a8/0x21f0 mm/page_alloc.c:5369 alloc_pages+0x1ac/0x2f0 mm/mempolicy.c:2191 folio_alloc+0x1c/0x60 mm/mempolicy.c:2201 filemap_alloc_folio+0x58/0x80 mm/filemap.c:1028 __page_cache_alloc include/linux/pagemap.h:275 [inline] page_cache_ra_unbounded+0x204/0x5cc mm/readahead.c:215 do_page_cache_ra mm/readahead.c:268 [inline] ondemand_readahead+0x4a8/0x1120 mm/readahead.c:551 page_cache_async_ra mm/readahead.c:608 [inline] page_cache_async_ra+0x1a8/0x270 mm/readahead.c:583 page_cache_async_readahead include/linux/pagemap.h:953 [inline] do_async_mmap_readahead mm/filemap.c:3015 [inline] filemap_fault+0x63c/0x1940 mm/filemap.c:3071 __do_fault+0xc8/0x590 mm/memory.c:3849 do_read_fault mm/memory.c:4164 [inline] do_fault mm/memory.c:4293 [inline] handle_pte_fault mm/memory.c:4551 [inline] __handle_mm_fault+0x1124/0x21e0 mm/memory.c:4686 handle_mm_fault+0x208/0x520 mm/memory.c:4784 faultin_page mm/gup.c:939 [inline] __get_user_pages+0x2e8/0x540 mm/gup.c:1160 populate_vma_page_range+0x168/0x200 mm/gup.c:1492 __mm_populate+0x168/0x2d4 mm/gup.c:1601 mm_populate include/linux/mm.h:2734 [inline] __do_sys_mlockall mm/mlock.c:800 [inline] __se_sys_mlockall mm/mlock.c:776 [inline] __arm64_sys_mlockall+0x26c/0x32c mm/mlock.c:776 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x6c/0x260 arch/arm64/kernel/syscall.c:52 el0_svc_common.constprop.0+0xc4/0x254 arch/arm64/kernel/syscall.c:142 do_el0_svc+0xa0/0xcc arch/arm64/kernel/syscall.c:181 el0_svc+0x64/0x280 arch/arm64/kernel/entry-common.c:603 el0t_64_sync_handler+0x1a4/0x1b0 arch/arm64/kernel/entry-common.c:621 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:572