BUG: Bad page state in process syz.4.793 pfn:364a1
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880364a1318 pfn:0x364a1
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 0000000000000000
raw: ffff8880364a1318 3fffffffffffffff 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 9222, tgid 9221 (syz.4.793), ts 187089624033, free_ts 187081916779
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+0x21fa/0x2270 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+0x5f5/0x7b0 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_netmems net/core/page_pool.c:670 [inline]
page_pool_alloc_frag_netmem+0x563/0x9b0 net/core/page_pool.c:1079
page_pool_alloc_netmem include/net/page_pool/helpers.h:131 [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+0xcf6/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588
BUG: Bad page state in process syz.4.793 pfn:765fb
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880765fbd68 pfn:0x765fb
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 0000000000000000
raw: ffff8880765fbd68 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 9222, tgid 9221 (syz.4.793), ts 187089604535, free_ts 187081950576
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+0x21fa/0x2270 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+0x5f5/0x7b0 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:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588
BUG: Bad page state in process syz.4.793 pfn:2c157
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802c157140 pfn:0x2c157
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 0000000000000000
raw: ffff88802c157140 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 9222, tgid 9221 (syz.4.793), ts 187089585956, free_ts 187081978442
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+0x21fa/0x2270 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+0x5f5/0x7b0 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:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588
BUG: Bad page state in process syz.4.793 pfn:53bd4
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888053bd4af0 pfn:0x53bd4
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 0000000000000000
raw: ffff888053bd4af0 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 9222, tgid 9221 (syz.4.793), ts 187089566601, free_ts 187082005376
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+0x21fa/0x2270 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+0x5f5/0x7b0 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:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588
BUG: Bad page state in process syz.4.793 pfn:66b07
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888066b07000 pfn:0x66b07
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 0000000000000000
raw: ffff888066b07000 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 9222, tgid 9221 (syz.4.793), ts 187089547488, free_ts 187082032631
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+0x21fa/0x2270 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+0x5f5/0x7b0 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:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588
BUG: Bad page state in process syz.4.793 pfn:7631a
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807631a640 pfn:0x7631a
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 0000000000000000
raw: ffff88807631a640 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 9222, tgid 9221 (syz.4.793), ts 187089528541, free_ts 187082060165
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+0x21fa/0x2270 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+0x5f5/0x7b0 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:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588
BUG: Bad page state in process syz.4.793 pfn:58e72
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888058e72d90 pfn:0x58e72
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 0000000000000000
raw: ffff888058e72d90 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 9222, tgid 9221 (syz.4.793), ts 187089509691, free_ts 187082086909
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+0x21fa/0x2270 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+0x5f5/0x7b0 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:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588
BUG: Bad page state in process syz.4.793 pfn:35793
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x35793
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 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 9222, tgid 9221 (syz.4.793), ts 187089485597, free_ts 187082165616
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+0x21fa/0x2270 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+0x5f5/0x7b0 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:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588
BUG: Bad page state in process syz.4.793 pfn:57234
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888057234a00 pfn:0x57234
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 0000000000000000
raw: ffff888057234a00 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 9222, tgid 9221 (syz.4.793), ts 187088167629, free_ts 187082192546
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+0x21fa/0x2270 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+0x5f5/0x7b0 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:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588
BUG: Bad page state in process syz.4.793 pfn:78340
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888078340d80 pfn:0x78340
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 0000000000000000
raw: ffff888078340d80 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 9222, tgid 9221 (syz.4.793), ts 187088149190, free_ts 187082219132
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+0x21fa/0x2270 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+0x5f5/0x7b0 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:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588
BUG: Bad page state in process syz.4.793 pfn:4a613
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x4a613
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 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 9222, tgid 9221 (syz.4.793), ts 187088130635, free_ts 187082246067
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+0x21fa/0x2270 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+0x5f5/0x7b0 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:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588
BUG: Bad page state in process syz.4.793 pfn:666a6
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880666a6200 pfn:0x666a6
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880236d6000 0000000000000000
raw: ffff8880666a6200 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 9222, tgid 9221 (syz.4.793), ts 187088112004, free_ts 187082273146
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+0x21fa/0x2270 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+0x5f5/0x7b0 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:5564 [inline]
netif_receive_generic_xdp net/core/dev.c:5605 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 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+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
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: 9222 Comm: syz.4.793 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
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+0xcc2/0xd10 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:724 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5495
netif_receive_generic_xdp net/core/dev.c:5611 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5673
tun_get_user+0x24f8/0x4370 drivers/net/tun.c:1905
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2032
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 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: 0033:0x7f8586f5e68e
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 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f8587e8dfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8587e8e6c0 RCX: 00007f8586f5e68e
RDX: 0000000000010e80 RSI: 00002000000000c0 RDI: 00000000000000c8
RBP: 00007f8587033e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8587226038 R14: 00007f8587225fa0 R15: 00007fffd72a1588