BUG: Bad page state in process syz.2.151 pfn:53ed1
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53ed1
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 0000000000000000
raw: 0000000000000000 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 6504, tgid 6502 (syz.2.151), ts 93179047714, free_ts 93114844530
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1076
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+0xb7b/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8
BUG: Bad page state in process syz.2.151 pfn:53ef0
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53ef0
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 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 6504, tgid 6502 (syz.2.151), ts 93179038301, free_ts 93114884574
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
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+0xb59/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8
BUG: Bad page state in process syz.2.151 pfn:53ef5
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53ef5
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 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 6504, tgid 6502 (syz.2.151), ts 93179029162, free_ts 93114924821
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
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+0xb59/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8
BUG: Bad page state in process syz.2.151 pfn:5663e
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5663e
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 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 6504, tgid 6502 (syz.2.151), ts 93179020234, free_ts 93114944091
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
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+0xb59/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8
BUG: Bad page state in process syz.2.151 pfn:53eed
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53eed
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 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 6504, tgid 6502 (syz.2.151), ts 93179010959, free_ts 93114984188
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
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+0xb59/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8
BUG: Bad page state in process syz.2.151 pfn:53eec
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53eec
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 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 6504, tgid 6502 (syz.2.151), ts 93179001532, free_ts 93115024723
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
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+0xb59/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8
BUG: Bad page state in process syz.2.151 pfn:53eeb
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53eeb
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 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 6504, tgid 6502 (syz.2.151), ts 93178992402, free_ts 93115064348
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
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+0xb59/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8
BUG: Bad page state in process syz.2.151 pfn:53eea
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53eea
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 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 6504, tgid 6502 (syz.2.151), ts 93178983047, free_ts 93115103052
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
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+0xb59/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8
BUG: Bad page state in process syz.2.151 pfn:53ee9
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53ee9
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 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 6504, tgid 6502 (syz.2.151), ts 93178974222, free_ts 93115142920
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
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+0xb59/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8
BUG: Bad page state in process syz.2.151 pfn:53ee8
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53ee8
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 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 6504, tgid 6502 (syz.2.151), ts 93178965256, free_ts 93115190368
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
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+0xb59/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8
BUG: Bad page state in process syz.2.151 pfn:53ee7
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53ee7
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 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 6504, tgid 6502 (syz.2.151), ts 93178956130, free_ts 93115230488
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
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+0xb59/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8
BUG: Bad page state in process syz.2.151 pfn:53ee6
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53ee6
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888020ad8000 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 6504, tgid 6502 (syz.2.151), ts 93178946837, free_ts 93115270496
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x228/0x280 mm/page_alloc.c:1857
prep_new_page mm/page_alloc.c:1865 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3915
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5210
__alloc_pages_noprof mm/page_alloc.c:5244 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5164
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
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+0xb59/0x1410 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5506 [inline]
netif_receive_generic_xdp net/core/dev.c:5547 [inline]
do_xdp_generic+0x715/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 0 tgid 0 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xbb0/0xd10 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xc9e/0x1750 kernel/rcu/tree.c:2857
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 6504 Comm: syz.2.151 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1094 [inline]
free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xcc2/0xd10 mm/page_alloc.c:2943
bpf_xdp_shrink_data net/core/filter.c:4202 [inline]
bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4226
____bpf_xdp_adjust_tail net/core/filter.c:4248 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4241
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+0x623/0x13f0 net/core/dev.c:5437
netif_receive_generic_xdp net/core/dev.c:5553 [inline]
do_xdp_generic+0xa6f/0x1280 net/core/dev.c:5615
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:686
ksys_write+0x150/0x270 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8648b5b58e
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:00007f8649a81fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8649a826c0 RCX: 00007f8648b5b58e
RDX: 000000000000fed7 RSI: 00002000000002c0 RDI: 00000000000000c8
RBP: 00007f8648c08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8648e16128 R14: 00007f8648e16090 R15: 00007fff0f4e77e8