BUG: Bad page state in process syz.1.2610  pfn:35fa1
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x2000000a6 pfn:0x35fa1
flags: 0x80000000000000(node=0|zone=1)
raw: 0080000000000000 dead000000000040 ffff88801ab68000 0000000000000000
raw: 00000002000000a6 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 14039, tgid 14035 (syz.1.2610), ts 690474815006, free_ts 677279170371
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x262a/0x26a0 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
 alloc_pages_bulk_noprof+0x67e/0x890 mm/page_alloc.c:5230
 alloc_pages_bulk_node_noprof include/linux/gfp.h:261 [inline]
 __page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
 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+0xcd0/0x19a0 net/core/skbuff.c:984
 netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x5f2/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 20 tgid 20 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x10e7/0x11c0 mm/page_alloc.c:2950
 __tlb_remove_table_free mm/mmu_gather.c:228 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core kernel/rcu/tree.c:2897 [inline]
 rcu_cpu_kthread+0x950/0x1480 kernel/rcu/tree.c:2985
 smpboot_thread_fn+0x57c/0xa80 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 14039 Comm: syz.1.2610 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 bad_page+0x17f/0x1c0 mm/page_alloc.c:643
 free_page_is_bad mm/page_alloc.c:1078 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0x1172/0x11c0 mm/page_alloc.c:2950
 bpf_xdp_shrink_data net/core/filter.c:4289 [inline]
 bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4313
 ____bpf_xdp_adjust_tail net/core/filter.c:4335 [inline]
 bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4328
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
 netif_receive_generic_xdp net/core/dev.c:5608 [inline]
 do_xdp_generic+0x894/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb0a43e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fdb086b4fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdb086b56c0 RCX: 00007fdb0a43e68e
RDX: 0000000000011dc0 RSI: 0000200000000300 RDI: 00000000000000c8
RBP: 00007fdb0a513e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb0a706128 R14: 00007fdb0a706090 R15: 00007ffe99d389e8
 </TASK>
BUG: Bad page state in process syz.1.2610  pfn:35fa0
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x44f pfn:0x35fa0
flags: 0x80000000000000(node=0|zone=1)
raw: 0080000000000000 dead000000000040 ffff88801ab68000 0000000000000000
raw: 000000000000044f 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 14039, tgid 14035 (syz.1.2610), ts 690474792498, free_ts 678343852135
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x262a/0x26a0 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
 alloc_pages_bulk_noprof+0x67e/0x890 mm/page_alloc.c:5230
 alloc_pages_bulk_node_noprof include/linux/gfp.h:261 [inline]
 __page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
 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+0xcd0/0x19a0 net/core/skbuff.c:984
 netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x5f2/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 13809 tgid 13809 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 free_unref_folios+0xcd4/0x1910 mm/page_alloc.c:3011
 folios_put_refs+0x815/0x920 mm/swap.c:1057
 folio_batch_release include/linux/folio_batch.h:101 [inline]
 shmem_undo_range+0x4e6/0x15d0 mm/shmem.c:1149
 shmem_truncate_range mm/shmem.c:1277 [inline]
 shmem_evict_inode+0x280/0xa80 mm/shmem.c:1407
 evict+0x624/0xb50 fs/inode.c:825
 dentry_kill+0x1b9/0x880 fs/dcache.c:826
 finish_dput+0x1a/0x260 fs/dcache.c:1001
 __fput+0x699/0xa80 fs/file_table.c:520
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x1fa/0x730 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Modules linked in:
CPU: 0 UID: 0 PID: 14039 Comm: syz.1.2610 Tainted: G    B        L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 bad_page+0x17f/0x1c0 mm/page_alloc.c:643
 free_page_is_bad mm/page_alloc.c:1078 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0x1172/0x11c0 mm/page_alloc.c:2950
 bpf_xdp_shrink_data net/core/filter.c:4289 [inline]
 bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4313
 ____bpf_xdp_adjust_tail net/core/filter.c:4335 [inline]
 bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4328
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
 netif_receive_generic_xdp net/core/dev.c:5608 [inline]
 do_xdp_generic+0x894/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb0a43e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fdb086b4fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdb086b56c0 RCX: 00007fdb0a43e68e
RDX: 0000000000011dc0 RSI: 0000200000000300 RDI: 00000000000000c8
RBP: 00007fdb0a513e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb0a706128 R14: 00007fdb0a706090 R15: 00007ffe99d389e8
 </TASK>
BUG: Bad page state in process syz.1.2610  pfn:539d1
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x450 pfn:0x539d1
flags: 0x80000000000000(node=0|zone=1)
raw: 0080000000000000 dead000000000040 ffff88801ab68000 0000000000000000
raw: 0000000000000450 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 14039, tgid 14035 (syz.1.2610), ts 690474770373, free_ts 678343865918
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x262a/0x26a0 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
 alloc_pages_bulk_noprof+0x67e/0x890 mm/page_alloc.c:5230
 alloc_pages_bulk_node_noprof include/linux/gfp.h:261 [inline]
 __page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
 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+0xcd0/0x19a0 net/core/skbuff.c:984
 netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x5f2/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 13809 tgid 13809 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 free_unref_folios+0xcd4/0x1910 mm/page_alloc.c:3011
 folios_put_refs+0x815/0x920 mm/swap.c:1057
 folio_batch_release include/linux/folio_batch.h:101 [inline]
 shmem_undo_range+0x4e6/0x15d0 mm/shmem.c:1149
 shmem_truncate_range mm/shmem.c:1277 [inline]
 shmem_evict_inode+0x280/0xa80 mm/shmem.c:1407
 evict+0x624/0xb50 fs/inode.c:825
 dentry_kill+0x1b9/0x880 fs/dcache.c:826
 finish_dput+0x1a/0x260 fs/dcache.c:1001
 __fput+0x699/0xa80 fs/file_table.c:520
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x1fa/0x730 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Modules linked in:
CPU: 0 UID: 0 PID: 14039 Comm: syz.1.2610 Tainted: G    B        L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 bad_page+0x17f/0x1c0 mm/page_alloc.c:643
 free_page_is_bad mm/page_alloc.c:1078 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0x1172/0x11c0 mm/page_alloc.c:2950
 bpf_xdp_shrink_data net/core/filter.c:4289 [inline]
 bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4313
 ____bpf_xdp_adjust_tail net/core/filter.c:4335 [inline]
 bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4328
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
 netif_receive_generic_xdp net/core/dev.c:5608 [inline]
 do_xdp_generic+0x894/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb0a43e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fdb086b4fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdb086b56c0 RCX: 00007fdb0a43e68e
RDX: 0000000000011dc0 RSI: 0000200000000300 RDI: 00000000000000c8
RBP: 00007fdb0a513e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb0a706128 R14: 00007fdb0a706090 R15: 00007ffe99d389e8
 </TASK>
BUG: Bad page state in process syz.1.2610  pfn:539d0
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x539d0
flags: 0x80000000000000(node=0|zone=1)
raw: 0080000000000000 dead000000000040 ffff88801ab68000 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 14039, tgid 14035 (syz.1.2610), ts 690474728040, free_ts 678248773777
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x262a/0x26a0 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
 alloc_pages_bulk_noprof+0x67e/0x890 mm/page_alloc.c:5230
 alloc_pages_bulk_node_noprof include/linux/gfp.h:261 [inline]
 __page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
 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+0xcd0/0x19a0 net/core/skbuff.c:984
 netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x5f2/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 28 tgid 28 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x10e7/0x11c0 mm/page_alloc.c:2950
 __tlb_remove_table_free mm/mmu_gather.c:228 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core kernel/rcu/tree.c:2897 [inline]
 rcu_cpu_kthread+0x950/0x1480 kernel/rcu/tree.c:2985
 smpboot_thread_fn+0x57c/0xa80 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 14039 Comm: syz.1.2610 Tainted: G    B        L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 bad_page+0x17f/0x1c0 mm/page_alloc.c:643
 free_page_is_bad mm/page_alloc.c:1078 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0x1172/0x11c0 mm/page_alloc.c:2950
 bpf_xdp_shrink_data net/core/filter.c:4289 [inline]
 bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4313
 ____bpf_xdp_adjust_tail net/core/filter.c:4335 [inline]
 bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4328
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
 netif_receive_generic_xdp net/core/dev.c:5608 [inline]
 do_xdp_generic+0x894/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb0a43e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fdb086b4fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdb086b56c0 RCX: 00007fdb0a43e68e
RDX: 0000000000011dc0 RSI: 0000200000000300 RDI: 00000000000000c8
RBP: 00007fdb0a513e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb0a706128 R14: 00007fdb0a706090 R15: 00007ffe99d389e8
 </TASK>
BUG: Bad page state in process syz.1.2610  pfn:656b9
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x49a pfn:0x656b9
flags: 0x80000000000000(node=0|zone=1)
raw: 0080000000000000 dead000000000040 ffff88801ab68000 0000000000000000
raw: 000000000000049a 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 14039, tgid 14035 (syz.1.2610), ts 690471264416, free_ts 686742514326
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x262a/0x26a0 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
 alloc_pages_bulk_noprof+0x67e/0x890 mm/page_alloc.c:5230
 alloc_pages_bulk_node_noprof include/linux/gfp.h:261 [inline]
 __page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
 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+0xcd0/0x19a0 net/core/skbuff.c:984
 netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x5f2/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 20 tgid 20 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x10e7/0x11c0 mm/page_alloc.c:2950
 __tlb_remove_table_free mm/mmu_gather.c:228 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core kernel/rcu/tree.c:2897 [inline]
 rcu_cpu_kthread+0x950/0x1480 kernel/rcu/tree.c:2985
 smpboot_thread_fn+0x57c/0xa80 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 14039 Comm: syz.1.2610 Tainted: G    B        L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 bad_page+0x17f/0x1c0 mm/page_alloc.c:643
 free_page_is_bad mm/page_alloc.c:1078 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0x1172/0x11c0 mm/page_alloc.c:2950
 bpf_xdp_shrink_data net/core/filter.c:4289 [inline]
 bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4313
 ____bpf_xdp_adjust_tail net/core/filter.c:4335 [inline]
 bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4328
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
 netif_receive_generic_xdp net/core/dev.c:5608 [inline]
 do_xdp_generic+0x894/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb0a43e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fdb086b4fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdb086b56c0 RCX: 00007fdb0a43e68e
RDX: 0000000000011dc0 RSI: 0000200000000300 RDI: 00000000000000c8
RBP: 00007fdb0a513e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb0a706128 R14: 00007fdb0a706090 R15: 00007ffe99d389e8
 </TASK>
BUG: Bad page state in process syz.1.2610  pfn:2b742
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802b742000 pfn:0x2b742
flags: 0x80000000000000(node=0|zone=1)
raw: 0080000000000000 dead000000000040 ffff88801ab68000 0000000000000000
raw: ffff88802b742000 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 14039, tgid 14035 (syz.1.2610), ts 690471242590, free_ts 686742974682
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x262a/0x26a0 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
 alloc_pages_bulk_noprof+0x67e/0x890 mm/page_alloc.c:5230
 alloc_pages_bulk_node_noprof include/linux/gfp.h:261 [inline]
 __page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
 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+0xcd0/0x19a0 net/core/skbuff.c:984
 netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x5f2/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 20 tgid 20 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x10e7/0x11c0 mm/page_alloc.c:2950
 __tlb_remove_table_free mm/mmu_gather.c:228 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core kernel/rcu/tree.c:2897 [inline]
 rcu_cpu_kthread+0x950/0x1480 kernel/rcu/tree.c:2985
 smpboot_thread_fn+0x57c/0xa80 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 14039 Comm: syz.1.2610 Tainted: G    B        L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 bad_page+0x17f/0x1c0 mm/page_alloc.c:643
 free_page_is_bad mm/page_alloc.c:1078 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0x1172/0x11c0 mm/page_alloc.c:2950
 bpf_xdp_shrink_data net/core/filter.c:4289 [inline]
 bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4313
 ____bpf_xdp_adjust_tail net/core/filter.c:4335 [inline]
 bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4328
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
 netif_receive_generic_xdp net/core/dev.c:5608 [inline]
 do_xdp_generic+0x894/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb0a43e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fdb086b4fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdb086b56c0 RCX: 00007fdb0a43e68e
RDX: 0000000000011dc0 RSI: 0000200000000300 RDI: 00000000000000c8
RBP: 00007fdb0a513e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb0a706128 R14: 00007fdb0a706090 R15: 00007ffe99d389e8
 </TASK>
BUG: Bad page state in process syz.1.2610  pfn:6456c
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6456c
flags: 0x80000000000000(node=0|zone=1)
raw: 0080000000000000 dead000000000040 ffff88801ab68000 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 14039, tgid 14035 (syz.1.2610), ts 690471216627, free_ts 686766035129
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x262a/0x26a0 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
 alloc_pages_bulk_noprof+0x67e/0x890 mm/page_alloc.c:5230
 alloc_pages_bulk_node_noprof include/linux/gfp.h:261 [inline]
 __page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
 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+0xcd0/0x19a0 net/core/skbuff.c:984
 netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x5f2/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 20 tgid 20 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x10e7/0x11c0 mm/page_alloc.c:2950
 __tlb_remove_table_free mm/mmu_gather.c:228 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core kernel/rcu/tree.c:2897 [inline]
 rcu_cpu_kthread+0x950/0x1480 kernel/rcu/tree.c:2985
 smpboot_thread_fn+0x57c/0xa80 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 14039 Comm: syz.1.2610 Tainted: G    B        L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 bad_page+0x17f/0x1c0 mm/page_alloc.c:643
 free_page_is_bad mm/page_alloc.c:1078 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0x1172/0x11c0 mm/page_alloc.c:2950
 bpf_xdp_shrink_data net/core/filter.c:4289 [inline]
 bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4313
 ____bpf_xdp_adjust_tail net/core/filter.c:4335 [inline]
 bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4328
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
 netif_receive_generic_xdp net/core/dev.c:5608 [inline]
 do_xdp_generic+0x894/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb0a43e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fdb086b4fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdb086b56c0 RCX: 00007fdb0a43e68e
RDX: 0000000000011dc0 RSI: 0000200000000300 RDI: 00000000000000c8
RBP: 00007fdb0a513e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb0a706128 R14: 00007fdb0a706090 R15: 00007ffe99d389e8
 </TASK>
BUG: Bad page state in process syz.1.2610  pfn:35d6a
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888035d6adc0 pfn:0x35d6a
flags: 0x80000000000000(node=0|zone=1)
raw: 0080000000000000 dead000000000040 ffff88801ab68000 0000000000000000
raw: ffff888035d6adc0 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 14039, tgid 14035 (syz.1.2610), ts 690471194082, free_ts 686766056215
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x262a/0x26a0 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
 alloc_pages_bulk_noprof+0x67e/0x890 mm/page_alloc.c:5230
 alloc_pages_bulk_node_noprof include/linux/gfp.h:261 [inline]
 __page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
 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+0xcd0/0x19a0 net/core/skbuff.c:984
 netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x5f2/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 20 tgid 20 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x10e7/0x11c0 mm/page_alloc.c:2950
 __tlb_remove_table_free mm/mmu_gather.c:228 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core kernel/rcu/tree.c:2897 [inline]
 rcu_cpu_kthread+0x950/0x1480 kernel/rcu/tree.c:2985
 smpboot_thread_fn+0x57c/0xa80 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 14039 Comm: syz.1.2610 Tainted: G    B        L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 bad_page+0x17f/0x1c0 mm/page_alloc.c:643
 free_page_is_bad mm/page_alloc.c:1078 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0x1172/0x11c0 mm/page_alloc.c:2950
 bpf_xdp_shrink_data net/core/filter.c:4289 [inline]
 bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4313
 ____bpf_xdp_adjust_tail net/core/filter.c:4335 [inline]
 bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4328
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
 netif_receive_generic_xdp net/core/dev.c:5608 [inline]
 do_xdp_generic+0x894/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb0a43e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fdb086b4fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdb086b56c0 RCX: 00007fdb0a43e68e
RDX: 0000000000011dc0 RSI: 0000200000000300 RDI: 00000000000000c8
RBP: 00007fdb0a513e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb0a706128 R14: 00007fdb0a706090 R15: 00007ffe99d389e8
 </TASK>
BUG: Bad page state in process syz.1.2610  pfn:2580f
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802580f000 pfn:0x2580f
flags: 0x80000000000000(node=0|zone=1)
raw: 0080000000000000 dead000000000040 ffff88801ab68000 0000000000000000
raw: ffff88802580f000 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 14039, tgid 14035 (syz.1.2610), ts 690471170515, free_ts 686766086982
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x262a/0x26a0 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
 alloc_pages_bulk_noprof+0x67e/0x890 mm/page_alloc.c:5230
 alloc_pages_bulk_node_noprof include/linux/gfp.h:261 [inline]
 __page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
 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+0xcd0/0x19a0 net/core/skbuff.c:984
 netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x5f2/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 20 tgid 20 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x10e7/0x11c0 mm/page_alloc.c:2950
 __tlb_remove_table_free mm/mmu_gather.c:228 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core kernel/rcu/tree.c:2897 [inline]
 rcu_cpu_kthread+0x950/0x1480 kernel/rcu/tree.c:2985
 smpboot_thread_fn+0x57c/0xa80 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 14039 Comm: syz.1.2610 Tainted: G    B        L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 bad_page+0x17f/0x1c0 mm/page_alloc.c:643
 free_page_is_bad mm/page_alloc.c:1078 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0x1172/0x11c0 mm/page_alloc.c:2950
 bpf_xdp_shrink_data net/core/filter.c:4289 [inline]
 bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4313
 ____bpf_xdp_adjust_tail net/core/filter.c:4335 [inline]
 bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4328
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
 netif_receive_generic_xdp net/core/dev.c:5608 [inline]
 do_xdp_generic+0x894/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb0a43e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fdb086b4fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdb086b56c0 RCX: 00007fdb0a43e68e
RDX: 0000000000011dc0 RSI: 0000200000000300 RDI: 00000000000000c8
RBP: 00007fdb0a513e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb0a706128 R14: 00007fdb0a706090 R15: 00007ffe99d389e8
 </TASK>
BUG: Bad page state in process syz.1.2610  pfn:5d879
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88805d879dc0 pfn:0x5d879
flags: 0x80000000000000(node=0|zone=1)
raw: 0080000000000000 dead000000000040 ffff88801ab68000 0000000000000000
raw: ffff88805d879dc0 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 14039, tgid 14035 (syz.1.2610), ts 690471137623, free_ts 686766117616
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x262a/0x26a0 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
 alloc_pages_bulk_noprof+0x67e/0x890 mm/page_alloc.c:5230
 alloc_pages_bulk_node_noprof include/linux/gfp.h:261 [inline]
 __page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
 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+0xcd0/0x19a0 net/core/skbuff.c:984
 netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x5f2/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 20 tgid 20 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x10e7/0x11c0 mm/page_alloc.c:2950
 __tlb_remove_table_free mm/mmu_gather.c:228 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core kernel/rcu/tree.c:2897 [inline]
 rcu_cpu_kthread+0x950/0x1480 kernel/rcu/tree.c:2985
 smpboot_thread_fn+0x57c/0xa80 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 14039 Comm: syz.1.2610 Tainted: G    B        L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 bad_page+0x17f/0x1c0 mm/page_alloc.c:643
 free_page_is_bad mm/page_alloc.c:1078 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0x1172/0x11c0 mm/page_alloc.c:2950
 bpf_xdp_shrink_data net/core/filter.c:4289 [inline]
 bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4313
 ____bpf_xdp_adjust_tail net/core/filter.c:4335 [inline]
 bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4328
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
 netif_receive_generic_xdp net/core/dev.c:5608 [inline]
 do_xdp_generic+0x894/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb0a43e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fdb086b4fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdb086b56c0 RCX: 00007fdb0a43e68e
RDX: 0000000000011dc0 RSI: 0000200000000300 RDI: 00000000000000c8
RBP: 00007fdb0a513e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb0a706128 R14: 00007fdb0a706090 R15: 00007ffe99d389e8
 </TASK>
BUG: Bad page state in process syz.1.2610  pfn:5f51d
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x5f51d
flags: 0x80000000000000(node=0|zone=1)
raw: 0080000000000000 dead000000000040 ffff88801ab68000 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 14039, tgid 14035 (syz.1.2610), ts 690471115279, free_ts 686766148354
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x262a/0x26a0 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
 alloc_pages_bulk_noprof+0x67e/0x890 mm/page_alloc.c:5230
 alloc_pages_bulk_node_noprof include/linux/gfp.h:261 [inline]
 __page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
 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+0xcd0/0x19a0 net/core/skbuff.c:984
 netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
 netif_receive_generic_xdp net/core/dev.c:5602 [inline]
 do_xdp_generic+0x5f2/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 20 tgid 20 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x10e7/0x11c0 mm/page_alloc.c:2950
 __tlb_remove_table_free mm/mmu_gather.c:228 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
 rcu_do_batch kernel/rcu/tree.c:2645 [inline]
 rcu_core kernel/rcu/tree.c:2897 [inline]
 rcu_cpu_kthread+0x950/0x1480 kernel/rcu/tree.c:2985
 smpboot_thread_fn+0x57c/0xa80 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 14039 Comm: syz.1.2610 Tainted: G    B        L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 bad_page+0x17f/0x1c0 mm/page_alloc.c:643
 free_page_is_bad mm/page_alloc.c:1078 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0x1172/0x11c0 mm/page_alloc.c:2950
 bpf_xdp_shrink_data net/core/filter.c:4289 [inline]
 bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4313
 ____bpf_xdp_adjust_tail net/core/filter.c:4335 [inline]
 bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4328
 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run_xdp include/net/xdp.h:696 [inline]
 bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
 netif_receive_generic_xdp net/core/dev.c:5608 [inline]
 do_xdp_generic+0x894/0xed0 net/core/dev.c:5670
 tun_get_user+0x2463/0x4380 drivers/net/tun.c:1905
 tun_chr_write_iter+0x119/0x200 drivers/net/tun.c:2032
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdb0a43e68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fdb086b4fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdb086b56c0 RCX: 00007fdb0a43e68e
RDX: 0000000000011dc0 RSI: 0000200000000300 RDI: 00000000000000c8
RBP: 00007fdb0a513e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb0a706128 R14: 00007fdb0a706090 R15: 00007ffe99d389e8
 </TASK>