BUG: Bad page state in process syz.0.17  pfn:79e9b
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888079e9bdc0 pfn:0x79e9b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000
raw: ffff888079e9bdc0 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 6017, tgid 6017 (syz.0.17), ts 102376699250, free_ts 101955351190
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
 __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612
 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+0xb47/0x13e0 net/core/skbuff.c:952
 netif_skb_check_for_xdp net/core/dev.c:5469 [inline]
 netif_receive_generic_xdp net/core/dev.c:5510 [inline]
 do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 __tlb_remove_table_free mm/mmu_gather.c:227 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 bad_page+0x180/0x1c0 mm/page_alloc.c:649
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_pages_prepare mm/page_alloc.c:1386 [inline]
 __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906
 bpf_xdp_shrink_data net/core/filter.c:4190 [inline]
 bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214
 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline]
 bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:721 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400
 netif_receive_generic_xdp net/core/dev.c:5516 [inline]
 do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1abcd8d97f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f
RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8
RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003
 </TASK>
BUG: Bad page state in process syz.0.17  pfn:7db23
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807db23a00 pfn:0x7db23
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000
raw: ffff88807db23a00 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 6017, tgid 6017 (syz.0.17), ts 102376689248, free_ts 101955374034
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
 __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612
 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+0xb47/0x13e0 net/core/skbuff.c:952
 netif_skb_check_for_xdp net/core/dev.c:5469 [inline]
 netif_receive_generic_xdp net/core/dev.c:5510 [inline]
 do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 __tlb_remove_table_free mm/mmu_gather.c:227 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 bad_page+0x180/0x1c0 mm/page_alloc.c:649
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_pages_prepare mm/page_alloc.c:1386 [inline]
 __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906
 bpf_xdp_shrink_data net/core/filter.c:4190 [inline]
 bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214
 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline]
 bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:721 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400
 netif_receive_generic_xdp net/core/dev.c:5516 [inline]
 do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1abcd8d97f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f
RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8
RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003
 </TASK>
BUG: Bad page state in process syz.0.17  pfn:75ffc
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x75ffc
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000
raw: ffff888000000000 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 6017, tgid 6017 (syz.0.17), ts 102376679287, free_ts 101955396513
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
 __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612
 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+0xb47/0x13e0 net/core/skbuff.c:952
 netif_skb_check_for_xdp net/core/dev.c:5469 [inline]
 netif_receive_generic_xdp net/core/dev.c:5510 [inline]
 do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 __tlb_remove_table_free mm/mmu_gather.c:227 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 bad_page+0x180/0x1c0 mm/page_alloc.c:649
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_pages_prepare mm/page_alloc.c:1386 [inline]
 __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906
 bpf_xdp_shrink_data net/core/filter.c:4190 [inline]
 bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214
 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline]
 bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:721 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400
 netif_receive_generic_xdp net/core/dev.c:5516 [inline]
 do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1abcd8d97f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f
RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8
RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003
 </TASK>
BUG: Bad page state in process syz.0.17  pfn:75ee3
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x75ee3
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000
raw: ffff888000000000 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 6017, tgid 6017 (syz.0.17), ts 102376669462, free_ts 101955408987
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
 __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612
 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+0xb47/0x13e0 net/core/skbuff.c:952
 netif_skb_check_for_xdp net/core/dev.c:5469 [inline]
 netif_receive_generic_xdp net/core/dev.c:5510 [inline]
 do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 __tlb_remove_table_free mm/mmu_gather.c:227 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 bad_page+0x180/0x1c0 mm/page_alloc.c:649
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_pages_prepare mm/page_alloc.c:1386 [inline]
 __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906
 bpf_xdp_shrink_data net/core/filter.c:4190 [inline]
 bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214
 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline]
 bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:721 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400
 netif_receive_generic_xdp net/core/dev.c:5516 [inline]
 do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1abcd8d97f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f
RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8
RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003
 </TASK>
BUG: Bad page state in process syz.0.17  pfn:327c5
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880327c58c0 pfn:0x327c5
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000
raw: ffff8880327c58c0 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 6017, tgid 6017 (syz.0.17), ts 102376659464, free_ts 101955431649
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
 __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612
 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+0xb47/0x13e0 net/core/skbuff.c:952
 netif_skb_check_for_xdp net/core/dev.c:5469 [inline]
 netif_receive_generic_xdp net/core/dev.c:5510 [inline]
 do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 __tlb_remove_table_free mm/mmu_gather.c:227 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 bad_page+0x180/0x1c0 mm/page_alloc.c:649
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_pages_prepare mm/page_alloc.c:1386 [inline]
 __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906
 bpf_xdp_shrink_data net/core/filter.c:4190 [inline]
 bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214
 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline]
 bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:721 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400
 netif_receive_generic_xdp net/core/dev.c:5516 [inline]
 do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1abcd8d97f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f
RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8
RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003
 </TASK>
BUG: Bad page state in process syz.0.17  pfn:77c31
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x77c31
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000
raw: ffff888000000000 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 6017, tgid 6017 (syz.0.17), ts 102376649558, free_ts 101955458047
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
 __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612
 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+0xb47/0x13e0 net/core/skbuff.c:952
 netif_skb_check_for_xdp net/core/dev.c:5469 [inline]
 netif_receive_generic_xdp net/core/dev.c:5510 [inline]
 do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 __tlb_remove_table_free mm/mmu_gather.c:227 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 bad_page+0x180/0x1c0 mm/page_alloc.c:649
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_pages_prepare mm/page_alloc.c:1386 [inline]
 __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906
 bpf_xdp_shrink_data net/core/filter.c:4190 [inline]
 bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214
 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline]
 bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:721 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400
 netif_receive_generic_xdp net/core/dev.c:5516 [inline]
 do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1abcd8d97f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f
RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8
RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003
 </TASK>
BUG: Bad page state in process syz.0.17  pfn:7f880
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x7f880
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000
raw: ffff888000000000 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 6017, tgid 6017 (syz.0.17), ts 102376639585, free_ts 101955470686
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
 __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612
 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+0xb47/0x13e0 net/core/skbuff.c:952
 netif_skb_check_for_xdp net/core/dev.c:5469 [inline]
 netif_receive_generic_xdp net/core/dev.c:5510 [inline]
 do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 __tlb_remove_table_free mm/mmu_gather.c:227 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 bad_page+0x180/0x1c0 mm/page_alloc.c:649
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_pages_prepare mm/page_alloc.c:1386 [inline]
 __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906
 bpf_xdp_shrink_data net/core/filter.c:4190 [inline]
 bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214
 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline]
 bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:721 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400
 netif_receive_generic_xdp net/core/dev.c:5516 [inline]
 do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1abcd8d97f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f
RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8
RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003
 </TASK>
BUG: Bad page state in process syz.0.17  pfn:758a4
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880758a4000 pfn:0x758a4
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000
raw: ffff8880758a4000 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 6017, tgid 6017 (syz.0.17), ts 102376629515, free_ts 101955483764
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
 __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612
 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+0xb47/0x13e0 net/core/skbuff.c:952
 netif_skb_check_for_xdp net/core/dev.c:5469 [inline]
 netif_receive_generic_xdp net/core/dev.c:5510 [inline]
 do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 bad_page+0x180/0x1c0 mm/page_alloc.c:649
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_pages_prepare mm/page_alloc.c:1386 [inline]
 __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906
 bpf_xdp_shrink_data net/core/filter.c:4190 [inline]
 bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214
 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline]
 bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:721 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400
 netif_receive_generic_xdp net/core/dev.c:5516 [inline]
 do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1abcd8d97f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f
RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8
RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003
 </TASK>
BUG: Bad page state in process syz.0.17  pfn:23716
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888023716cc0 pfn:0x23716
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000
raw: ffff888023716cc0 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 6017, tgid 6017 (syz.0.17), ts 102376618810, free_ts 101957268766
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
 __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612
 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+0xb47/0x13e0 net/core/skbuff.c:952
 netif_skb_check_for_xdp net/core/dev.c:5469 [inline]
 netif_receive_generic_xdp net/core/dev.c:5510 [inline]
 do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 bad_page+0x180/0x1c0 mm/page_alloc.c:649
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_pages_prepare mm/page_alloc.c:1386 [inline]
 __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906
 bpf_xdp_shrink_data net/core/filter.c:4190 [inline]
 bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214
 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline]
 bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:721 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400
 netif_receive_generic_xdp net/core/dev.c:5516 [inline]
 do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1abcd8d97f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f
RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8
RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003
 </TASK>
BUG: Bad page state in process syz.0.17  pfn:71eb1
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888071eb1000 pfn:0x71eb1
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000
raw: ffff888071eb1000 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 6017, tgid 6017 (syz.0.17), ts 102376608898, free_ts 101957282730
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
 __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612
 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+0xb47/0x13e0 net/core/skbuff.c:952
 netif_skb_check_for_xdp net/core/dev.c:5469 [inline]
 netif_receive_generic_xdp net/core/dev.c:5510 [inline]
 do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 bad_page+0x180/0x1c0 mm/page_alloc.c:649
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_pages_prepare mm/page_alloc.c:1386 [inline]
 __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906
 bpf_xdp_shrink_data net/core/filter.c:4190 [inline]
 bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214
 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline]
 bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:721 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400
 netif_receive_generic_xdp net/core/dev.c:5516 [inline]
 do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1abcd8d97f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f
RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8
RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003
 </TASK>
BUG: Bad page state in process syz.0.17  pfn:71eb0
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888071eb0dc0 pfn:0x71eb0
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000
raw: ffff888071eb0dc0 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 6017, tgid 6017 (syz.0.17), ts 102376599036, free_ts 101957296391
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
 __alloc_pages_noprof mm/page_alloc.c:5217 [inline]
 alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137
 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
 __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612
 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+0xb47/0x13e0 net/core/skbuff.c:952
 netif_skb_check_for_xdp net/core/dev.c:5469 [inline]
 netif_receive_generic_xdp net/core/dev.c:5510 [inline]
 do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1394 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Tainted: G    B               syzkaller #0 PREEMPT(full) 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 bad_page+0x180/0x1c0 mm/page_alloc.c:649
 free_page_is_bad mm/page_alloc.c:1082 [inline]
 free_pages_prepare mm/page_alloc.c:1386 [inline]
 __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906
 bpf_xdp_shrink_data net/core/filter.c:4190 [inline]
 bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214
 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline]
 bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:721 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400
 netif_receive_generic_xdp net/core/dev.c:5516 [inline]
 do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578
 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929
 __netif_receive_skb_one_core net/core/dev.c:6117 [inline]
 __netif_receive_skb+0x72/0x380 net/core/dev.c:6232
 netif_receive_skb_internal net/core/dev.c:6318 [inline]
 netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1abcd8d97f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f
RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8
RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003
 </TASK>