watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [modprobe:21702] Modules linked in: irq event stamp: 798 hardirqs last enabled at (797): [] exit_to_kernel_mode+0x38/0x230 arch/arm64/kernel/entry-common.c:59 hardirqs last disabled at (798): [] enter_el1_irq_or_nmi+0x10/0x20 arch/arm64/kernel/entry-common.c:101 softirqs last enabled at (728): [] _stext+0x9e0/0x1084 softirqs last disabled at (599): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (599): [] invoke_softirq kernel/softirq.c:228 [inline] softirqs last disabled at (599): [] __irq_exit_rcu+0x46c/0x510 kernel/softirq.c:422 CPU: 1 PID: 21702 Comm: modprobe Not tainted 5.12.0-rc8-syzkaller-00039-ge77a830c8297 #0 Hardware name: linux,dummy-virt (DT) pstate: 00000005 (nzcv daif -PAN -UAO -TCO BTYPE=--) pc : clear_page+0x14/0x28 arch/arm64/lib/clear_page.S:23 lr : clear_highpage include/linux/highmem.h:203 [inline] lr : kernel_init_free_pages+0x74/0x180 mm/page_alloc.c:1212 sp : ffff00001466f0d0 x29: ffff00001466f0d0 x28: fffffc0000180f00 x27: ffff00007fc13ec0 x26: ffff00000a72aef8 x25: ffff6000014e55df x24: 00000000000014b8 x23: ffff00000a729a40 x22: fffffc0000180f40 x21: ffff8000154f4ce0 x20: dfff800000000000 x19: fffffc0000180f00 x18: ffff00006ab3db48 x17: 0000000000001448 x16: 000000000000144c x15: 0000000007000000 x14: 1fffe000028cdde4 x13: 0000000000000001 x12: ffff7f80000301e7 x11: 1fffff80000301e6 x10: ffff7f80000301e6 x9 : 0000000000000000 x8 : ffff600000c07a00 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 1ffff00002fa7d50 x3 : 1fffe000014e5349 x2 : 0000000000000004 x1 : 0000000000000040 x0 : ffff00000603c980 Call trace: clear_page+0x14/0x28 arch/arm64/lib/clear_page.S:21 post_alloc_hook+0x130/0x1fc mm/page_alloc.c:2305 prep_new_page mm/page_alloc.c:2311 [inline] get_page_from_freelist+0x2024/0x2a40 mm/page_alloc.c:3951 __alloc_pages_nodemask+0x2a0/0x24dc mm/page_alloc.c:5001 alloc_pages_vma+0xb4/0x510 mm/mempolicy.c:2240 do_cow_fault mm/memory.c:3958 [inline] do_fault mm/memory.c:4069 [inline] handle_pte_fault mm/memory.c:4318 [inline] __handle_mm_fault+0x888/0x21d4 mm/memory.c:4453 handle_mm_fault+0x1cc/0x4dc mm/memory.c:4551 __do_page_fault arch/arm64/mm/fault.c:507 [inline] do_page_fault+0x228/0x880 arch/arm64/mm/fault.c:591 do_translation_fault+0x1a4/0x210 arch/arm64/mm/fault.c:672 do_mem_abort+0x64/0x1c0 arch/arm64/mm/fault.c:805 el1_abort+0x3c/0x60 arch/arm64/kernel/entry-common.c:167 el1_sync_handler+0xac/0xd0 arch/arm64/kernel/entry-common.c:259 el1_sync+0x70/0x100 arch/arm64/kernel/entry.S:658 __arch_clear_user+0x10/0x80 arch/arm64/lib/clear_user.S:25 load_elf_binary+0x10c0/0x3c8c fs/binfmt_elf.c:1209 search_binary_handler fs/exec.c:1720 [inline] exec_binprm fs/exec.c:1761 [inline] bprm_execve fs/exec.c:1830 [inline] bprm_execve+0x574/0x138c fs/exec.c:1792 kernel_execve+0x264/0x380 fs/exec.c:1973 call_usermodehelper_exec_async+0x25c/0x454 kernel/umh.c:110 ret_from_fork+0x10/0x3c arch/arm64/kernel/entry.S:960