BUG: Bad page state in process syz.0.3088 pfn:b36dc
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xb36dc
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: 0000000000000000 3ffffffffffffffe 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349864874686, free_ts 346837930087
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88
BUG: Bad page state in process syz.0.3088 pfn:b36b3
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xb36b3
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349866068662, free_ts 346837890912
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88
BUG: Bad page state in process syz.0.3088 pfn:5454b
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88805454b000 pfn:0x5454b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: ffff88805454b000 0000000000000001 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349866454565, free_ts 346837858623
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88
BUG: Bad page state in process syz.0.3088 pfn:31e43
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888031e431c0 pfn:0x31e43
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: ffff888031e431c0 0000000000000001 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349866892516, free_ts 346837831840
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88
BUG: Bad page state in process syz.0.3088 pfn:ad5ce
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880ad5cec30 pfn:0xad5ce
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: ffff8880ad5cec30 0000000000000001 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349867787699, free_ts 346826792896
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88
BUG: Bad page state in process syz.0.3088 pfn:30d4f
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888030d4f070 pfn:0x30d4f
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: ffff888030d4f070 0000000000000001 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349869264488, free_ts 346826782382
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88
BUG: Bad page state in process syz.0.3088 pfn:ac98e
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880ac98e000 pfn:0xac98e
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: ffff8880ac98e000 0000000000000001 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349870438236, free_ts 346826697616
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88
BUG: Bad page state in process syz.0.3088 pfn:7601a
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x7601a
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: ffff888000000000 0000000000000001 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349870991201, free_ts 346826687401
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88
BUG: Bad page state in process syz.0.3088 pfn:2fa66
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802fa66900 pfn:0x2fa66
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: ffff88802fa66900 0000000000000001 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349871472848, free_ts 346826662145
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88
BUG: Bad page state in process syz.0.3088 pfn:b37cd
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xb37cd
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349865614120, free_ts 346837902736
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88
BUG: Bad page state in process syz.0.3088 pfn:557ac
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880557ace00 pfn:0x557ac
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: ffff8880557ace00 0000000000000001 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349860916405, free_ts 346838189874
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88
BUG: Bad page state in process syz.0.3088 pfn:aaa53
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880aaa53300 pfn:0xaaa53
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801afab000 0000000000000000
raw: ffff8880aaa53300 0000000000000001 00000000f9000000 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 15334, tgid 15329 (syz.2.2353), ts 349861395274, free_ts 346838162873
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
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_alloc_va include/net/page_pool/helpers.h:198 [inline]
page_pool_dev_alloc_va include/net/page_pool/helpers.h:221 [inline]
skb_pp_cow_data+0x287/0x19b0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
__netif_receive_skb_core+0x10e5/0x3170 net/core/dev.c:6012
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
page last free pid 5720 tgid 5720 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
pcpu_free_pages mm/percpu-vm.c:65 [inline]
pcpu_depopulate_chunk+0x45f/0x500 mm/percpu-vm.c:330
pcpu_reclaim_populated mm/percpu.c:2158 [inline]
pcpu_balance_workfn+0x379/0x1010 mm/percpu.c:2214
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 1 UID: 0 PID: 18547 Comm: syz.0.3088 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4220 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4244
____bpf_xdp_adjust_tail net/core/filter.c:4266 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4259
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+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 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+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f025715d68e
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:00007f0254ff3fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0254ff46c0 RCX: 00007f025715d68e
RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007f0257232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0257416308 R14: 00007f0257416270 R15: 00007ffcbb59fd88