BUG: Bad page state in process syz.0.17 pfn:32920
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888032920780 pfn:0x32920
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff888032920780 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 5840, tgid 5840 (syz.0.17), ts 80790666706, free_ts 80643877656
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [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:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 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:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0
BUG: Bad page state in process syz.0.17 pfn:35169
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888035169e70 pfn:0x35169
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff888035169e70 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 5840, tgid 5840 (syz.0.17), ts 80790653469, free_ts 80643887621
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcd0/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0
BUG: Bad page state in process syz.0.17 pfn:7f5c9
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807f5c9528 pfn:0x7f5c9
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff88807f5c9528 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 5840, tgid 5840 (syz.0.17), ts 80790642116, free_ts 80643920044
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcd0/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0
BUG: Bad page state in process syz.0.17 pfn:34640
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888034640c80 pfn:0x34640
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff888034640c80 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 5840, tgid 5840 (syz.0.17), ts 80790630226, free_ts 80643931095
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcd0/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0
BUG: Bad page state in process syz.0.17 pfn:341ac
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880341acc80 pfn:0x341ac
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff8880341acc80 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 5840, tgid 5840 (syz.0.17), ts 80790618744, free_ts 80643942751
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcd0/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0
BUG: Bad page state in process syz.0.17 pfn:34641
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880346418c0 pfn:0x34641
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff8880346418c0 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 5840, tgid 5840 (syz.0.17), ts 80790606934, free_ts 80643953441
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcd0/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0
BUG: Bad page state in process syz.0.17 pfn:79889
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880798898c0 pfn:0x79889
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff8880798898c0 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 5840, tgid 5840 (syz.0.17), ts 80790594976, free_ts 80643971015
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcd0/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0
BUG: Bad page state in process syz.0.17 pfn:7988a
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807988adc0 pfn:0x7988a
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff88807988adc0 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 5840, tgid 5840 (syz.0.17), ts 80790583005, free_ts 80643981491
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcd0/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0
BUG: Bad page state in process syz.0.17 pfn:7988b
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807988b640 pfn:0x7988b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff88807988b640 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 5840, tgid 5840 (syz.0.17), ts 80790571274, free_ts 80643991152
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcd0/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0
BUG: Bad page state in process syz.0.17 pfn:213a2
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880213a2640 pfn:0x213a2
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff8880213a2640 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 5840, tgid 5840 (syz.0.17), ts 80790559374, free_ts 80644001406
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcd0/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0
BUG: Bad page state in process syz.0.17 pfn:77f8c
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888077f8c500 pfn:0x77f8c
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff888077f8c500 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 5840, tgid 5840 (syz.0.17), ts 80790546919, free_ts 80644012462
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcd0/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0
BUG: Bad page state in process syz.0.17 pfn:123d7
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880123d7210 pfn:0x123d7
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aed000 0000000000000000
raw: ffff8880123d7210 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 5840, tgid 5840 (syz.0.17), ts 80790535005, free_ts 80644023521
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x22d/0x280 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x24ae/0x2530 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5221
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5255
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5175
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:619
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcd0/0x19a0 net/core/skbuff.c:984
netif_skb_check_for_xdp net/core/dev.c:5561 [inline]
netif_receive_generic_xdp net/core/dev.c:5602 [inline]
do_xdp_generic+0x770/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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 5836 tgid 5836 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
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
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
Modules linked in:
CPU: 0 UID: 0 PID: 5840 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
free_page_is_bad mm/page_alloc.c:1076 [inline]
__free_pages_prepare mm/page_alloc.c:1388 [inline]
__free_frozen_pages+0xcca/0xd20 mm/page_alloc.c:2938
bpf_xdp_shrink_data net/core/filter.c:4247 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4271
____bpf_xdp_adjust_tail net/core/filter.c:4293 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4286
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x5e3/0x14b0 net/core/dev.c:5492
netif_receive_generic_xdp net/core/dev.c:5608 [inline]
do_xdp_generic+0xac2/0x12d0 net/core/dev.c:5670
tun_get_user+0x24a0/0x4350 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: 0033:0x7f980b75d68e
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:00007ffe26ab8ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556b38e500 RCX: 00007f980b75d68e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f980b832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f980ba15fac R14: 00007f980ba15fa0 R15: 00007f980ba15fa0