watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.1:26699]
Modules linked in:
irq event stamp: 74
hardirqs last  enabled at (73): [<ffff8000143ef8e8>] exit_to_kernel_mode+0x38/0x230 arch/arm64/kernel/entry-common.c:59
hardirqs last disabled at (74): [<ffff8000143effb0>] enter_el1_irq_or_nmi+0x10/0x20 arch/arm64/kernel/entry-common.c:101
softirqs last  enabled at (0): [<ffff80001013c144>] copy_process+0x1230/0x52ac kernel/fork.c:2062
softirqs last disabled at (0): [<0000000000000000>] 0x0
CPU: 0 PID: 26699 Comm: syz-executor.1 Not tainted 5.12.0-rc7-syzkaller-00004-geebe426d32e1 #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 : ffff00002764f330
x29: ffff00002764f330 x28: fffffc0000181300 
x27: ffff00007fc13ec0 x26: ffff000009faaef8 
x25: ffff6000013f55df x24: 00000000000014b8 
x23: ffff000009fa9a40 x22: fffffc0000181340 
x21: ffff800015504a60 x20: dfff800000000000 
x19: fffffc0000181300 x18: ffff00006ab12b48 
x17: 0000000000000000 x16: 0000000000000003 
x15: ffff8000172d9810 x14: 1fffe00004ec9e30 
x13: 0000000000000001 x12: ffff7f8000030267 
x11: 1fffff8000030266 x10: ffff7f8000030266 
x9 : 0000000000000000 x8 : ffff600000c09a00 
x7 : 0000000000000000 x6 : 000000000000003f 
x5 : 0000000000000040 x4 : 1ffff00002fa9d50 
x3 : 1fffe000013f5349 x2 : 0000000000000004 
x1 : 0000000000000040 x0 : ffff00000604c800 
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
 wp_page_copy+0x198/0x16e0 mm/memory.c:2853
 do_wp_page+0x1d8/0xbbc mm/memory.c:3160
 handle_pte_fault mm/memory.c:4336 [inline]
 __handle_mm_fault+0x1020/0x21d4 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_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:656
 schedule_tail+0x15c/0x1b0 kernel/sched/core.c:4262
 ret_from_fork+0x4/0x3c arch/arm64/kernel/entry.S:955