BUG: Bad page state in process syz-executor377  pfn:73d9f
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x73d9f
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c708000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5613, tgid 5613 (syz-executor377), ts 57611249911
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1871
 prep_new_page mm/page_alloc.c:1879 [inline]
 get_page_from_freelist+0x110d/0x35d0 mm/page_alloc.c:3943
 __alloc_frozen_pages_noprof+0x2eb/0x3300 mm/page_alloc.c:5436
 __alloc_pages_noprof mm/page_alloc.c:5471 [inline]
 alloc_pages_bulk_noprof+0x5e1/0x13c0 mm/page_alloc.c:5295
 alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
 __page_pool_alloc_netmems_slow+0x178/0x930 net/core/page_pool.c:637
 page_pool_alloc_netmems net/core/page_pool.c:688 [inline]
 page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:675
 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
 page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
 page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
 skb_pp_cow_data+0x975/0x1140 net/core/skbuff.c:990
 skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1024
 netif_skb_check_for_xdp net/core/dev.c:5619 [inline]
 netif_receive_generic_xdp net/core/dev.c:5660 [inline]
 do_xdp_generic+0x56b/0x12e0 net/core/dev.c:5728
 __netif_receive_skb_core.constprop.0+0x836/0x3530 net/core/dev.c:6074
 __netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:6262
 __netif_receive_skb+0x1f/0x120 net/core/dev.c:6377
 netif_receive_skb_internal net/core/dev.c:6463 [inline]
 netif_receive_skb+0x139/0x7d0 net/core/dev.c:6522
 tun_rx_batched.isra.0+0x3f6/0x750 drivers/net/tun.c:1595
 tun_get_user+0x1f53/0x3cc0 drivers/net/tun.c:2045
 tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:2091
page last free pid 5604 tgid 5604 ts 51407948968 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 __free_frozen_pages+0x79f/0x10f0 mm/page_alloc.c:2962
 __folio_put+0x3b4/0x5f0 mm/folio.c:106
 folio_put include/linux/mm.h:2160 [inline]
 put_page include/linux/mm.h:2229 [inline]
 anon_pipe_trim_and_unlock+0x2cc/0x3f0 fs/pipe.c:191
 anon_pipe_read+0xbae/0x1200 fs/pipe.c:472
 new_sync_read fs/read_write.c:493 [inline]
 vfs_read+0x960/0xb40 fs/read_write.c:574
 ksys_read+0x1f8/0x250 fs/read_write.c:716
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Modules linked in:
CPU: 1 UID: 0 PID: 5613 Comm: syz-executor377 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2026
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 bad_page.cold+0xbe/0xdf mm/page_alloc.c:647
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_page_is_bad mm/page_alloc.c:1076 [inline]
 __free_pages_prepare mm/page_alloc.c:1409 [inline]
 __free_frozen_pages+0x7d1/0x10f0 mm/page_alloc.c:2962