BUG: Bad page state in process syz.1.320 pfn:7cfb0
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x7cfb0
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff888000000000 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 6889, tgid 6888 (syz.1.320), ts 104133053000
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
page_pool_alloc_netmems net/core/page_pool.c:688 [inline]
page_pool_alloc_frag_netmem+0x561/0x9b0 net/core/page_pool.c:1090
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+0xc2c/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5621 tgid 5621 ts 103967268380 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
___free_pages_bulk mm/kasan/shadow.c:333 [inline]
__kasan_populate_vmalloc_do mm/kasan/shadow.c:385 [inline]
__kasan_populate_vmalloc+0x12d/0x1c0 mm/kasan/shadow.c:424
kasan_populate_vmalloc include/linux/kasan.h:580 [inline]
alloc_vmap_area+0xd1a/0x1420 mm/vmalloc.c:2145
__get_vm_area_node+0x200/0x2f0 mm/vmalloc.c:3248
__vmalloc_node_range_noprof+0x343/0x1540 mm/vmalloc.c:4064
__vmalloc_node_noprof mm/vmalloc.c:4165 [inline]
vzalloc_noprof+0xb2/0xe0 mm/vmalloc.c:4243
alloc_counters net/ipv4/netfilter/arp_tables.c:671 [inline]
copy_entries_to_user net/ipv4/netfilter/arp_tables.c:692 [inline]
get_entries net/ipv4/netfilter/arp_tables.c:787 [inline]
do_arpt_get_ctl+0x915/0x1270 net/ipv4/netfilter/arp_tables.c:1013
nf_getsockopt+0x26e/0x290 net/netfilter/nf_sockopt.c:116
ip_getsockopt+0x19e/0x230 net/ipv4/ip_sockglue.c:1777
do_sock_getsockopt+0x51d/0x7e0 net/socket.c:2503
__sys_getsockopt net/socket.c:2534 [inline]
__do_sys_getsockopt net/socket.c:2541 [inline]
__se_sys_getsockopt net/socket.c:2538 [inline]
__x64_sys_getsockopt+0x1a4/0x240 net/socket.c:2538
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
BUG: Bad page state in process syz.1.320 pfn:22b7a
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888022b7a000 pfn:0x22b7a
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff888022b7a000 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 6889, tgid 6888 (syz.1.320), ts 104133033709
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
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+0xc08/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 24 tgid 24 ts 103974101315 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2650 [inline]
rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919
handle_softirqs+0x226/0x860 kernel/softirq.c:645
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099
smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
BUG: Bad page state in process syz.1.320 pfn:58ad1
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x58ad1
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6889, tgid 6888 (syz.1.320), ts 104133018043
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
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+0xc08/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 24 tgid 24 ts 103974129724 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2650 [inline]
rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919
handle_softirqs+0x226/0x860 kernel/softirq.c:645
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099
smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
BUG: Bad page state in process syz.1.320 pfn:77b9f
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x77b9f
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6889, tgid 6888 (syz.1.320), ts 104132999972
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
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+0xc08/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 24 tgid 24 ts 103974155723 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2650 [inline]
rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919
handle_softirqs+0x226/0x860 kernel/softirq.c:645
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099
smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
BUG: Bad page state in process syz.1.320 pfn:58a06
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888058a06000 pfn:0x58a06
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff888058a06000 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 6889, tgid 6888 (syz.1.320), ts 104132981844
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
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+0xc08/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 24 tgid 24 ts 103974172263 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2650 [inline]
rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919
handle_softirqs+0x226/0x860 kernel/softirq.c:645
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099
smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
BUG: Bad page state in process syz.1.320 pfn:599cc
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880599cc000 pfn:0x599cc
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff8880599cc000 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 6889, tgid 6888 (syz.1.320), ts 104132963634
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
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+0xc08/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 24 tgid 24 ts 103974195471 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2650 [inline]
rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919
handle_softirqs+0x226/0x860 kernel/softirq.c:645
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099
smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
BUG: Bad page state in process syz.1.320 pfn:584fe
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x584fe
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6889, tgid 6888 (syz.1.320), ts 104132945436
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
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+0xc08/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 24 tgid 24 ts 103974216418 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2650 [inline]
rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919
handle_softirqs+0x226/0x860 kernel/softirq.c:645
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099
smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
BUG: Bad page state in process syz.1.320 pfn:75aa1
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888075aa1640 pfn:0x75aa1
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff888075aa1640 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 6889, tgid 6888 (syz.1.320), ts 104132925804
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
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+0xc08/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 24 tgid 24 ts 103974229430 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2650 [inline]
rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919
handle_softirqs+0x226/0x860 kernel/softirq.c:645
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099
smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
BUG: Bad page state in process syz.1.320 pfn:2f0a1
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x2f0a1
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6889, tgid 6888 (syz.1.320), ts 104132905000
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
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+0xc08/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 24 tgid 24 ts 103974258289 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2650 [inline]
rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919
handle_softirqs+0x226/0x860 kernel/softirq.c:645
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099
smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
BUG: Bad page state in process syz.1.320 pfn:75963
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x75963
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6889, tgid 6888 (syz.1.320), ts 104132148270
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
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+0xc08/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 24 tgid 24 ts 103974280445 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2650 [inline]
rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919
handle_softirqs+0x226/0x860 kernel/softirq.c:645
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099
smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
BUG: Bad page state in process syz.1.320 pfn:783ed
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880783ed280 pfn:0x783ed
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff8880783ed280 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 6889, tgid 6888 (syz.1.320), ts 104132133333
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
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+0xc08/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 24 tgid 24 ts 103974293720 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2650 [inline]
rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919
handle_softirqs+0x226/0x860 kernel/softirq.c:645
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099
smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
BUG: Bad page state in process syz.1.320 pfn:782e0
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x782e0
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c167000 0000000000000000
raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6889, tgid 6888 (syz.1.320), ts 104132116973
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5471
alloc_pages_bulk_noprof+0x5fa/0x7c0 mm/page_alloc.c:5295
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_netmems_slow+0x14f/0x720 net/core/page_pool.c:637
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+0xc08/0x18e0 net/core/skbuff.c:990
netif_skb_check_for_xdp net/core/dev.c:5652 [inline]
netif_receive_generic_xdp net/core/dev.c:5693 [inline]
do_xdp_generic+0x78f/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 24 tgid 24 ts 103974319771 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2650 [inline]
rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919
handle_softirqs+0x226/0x860 kernel/softirq.c:645
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1099
smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 6889 Comm: syz.1.320 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:647
free_page_is_bad mm/page_alloc.c:1082 [inline]
__free_pages_prepare mm/page_alloc.c:1409 [inline]
__free_frozen_pages+0xd37/0xd90 mm/page_alloc.c:2962
bpf_xdp_shrink_data net/core/filter.c:4383 [inline]
bpf_xdp_frags_shrink_tail+0x4ed/0x800 net/core/filter.c:4407
____bpf_xdp_adjust_tail net/core/filter.c:4429 [inline]
bpf_xdp_adjust_tail+0x1ce/0x210 net/core/filter.c:4422
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:779 [inline]
bpf_prog_run_xdp include/net/xdp.h:701 [inline]
bpf_prog_run_generic_xdp+0x612/0x1560 net/core/dev.c:5579
netif_receive_generic_xdp net/core/dev.c:5699 [inline]
do_xdp_generic+0xae1/0x12f0 net/core/dev.c:5761
tun_get_user+0x248b/0x4450 drivers/net/tun.c:1967
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2094
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:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc64615ed8e
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:00007fc64704bfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc64704c6c0 RCX: 00007fc64615ed8e
RDX: 000000000000fdef RSI: 0000200000000ac0 RDI: 00000000000000c8
RBP: 00007fc646235ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc646426038 R14: 00007fc646425fa0 R15: 00007ffc8b922af8
netlink: 'syz.1.320': attribute type 10 has an invalid length.
netlink: 40 bytes leftover after parsing attributes in process `syz.1.320'.
dummy0: entered promiscuous mode