BUG: Bad page state in process syz.0.1322 pfn:78ece
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x78ece
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: ffff888000000000 3ffffffffffffffe 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 13, tgid 13 (kworker/u8:1), ts 180756075286, free_ts 180685506990
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1076
page_pool_alloc_netmem include/net/page_pool/helpers.h:131 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_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+0x287/0x1bb0 net/core/skbuff.c:949
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
__netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6005
__netif_receive_skb_one_core net/core/dev.c:6193 [inline]
__netif_receive_skb net/core/dev.c:6308 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6659
__napi_poll+0xae/0x340 net/core/dev.c:7723
napi_poll net/core/dev.c:7786 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7943
handle_softirqs+0x22a/0x870 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:924 [inline]
__dev_queue_xmit+0x1efe/0x3870 net/core/dev.c:4891
page last free pid 9723 tgid 9723 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
__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:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x870 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8
BUG: Bad page state in process syz.0.1322 pfn:2cc95
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2cc95
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 11229, tgid 11228 (syz.0.1322), ts 213269946210, free_ts 213238339464
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
vfree+0x25a/0x400 mm/vmalloc.c:3479
delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3398
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8
BUG: Bad page state in process syz.0.1322 pfn:2cc96
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2cc96
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 11229, tgid 11228 (syz.0.1322), ts 213269921501, free_ts 213238352647
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
vfree+0x25a/0x400 mm/vmalloc.c:3479
delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3398
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8
BUG: Bad page state in process syz.0.1322 pfn:2cc97
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2cc97
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 11229, tgid 11228 (syz.0.1322), ts 213269902869, free_ts 213238366214
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
vfree+0x25a/0x400 mm/vmalloc.c:3479
delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3398
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8
BUG: Bad page state in process syz.0.1322 pfn:7f880
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807f884000 pfn:0x7f880
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: ffff88807f884000 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 11229, tgid 11228 (syz.0.1322), ts 213269883562, free_ts 213238421854
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
vfree+0x25a/0x400 mm/vmalloc.c:3479
delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3398
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8
BUG: Bad page state in process syz.0.1322 pfn:7f881
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffffffffffffffff pfn:0x7f881
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: ffffffffffffffff 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 11229, tgid 11228 (syz.0.1322), ts 213269864321, free_ts 213238435348
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
vfree+0x25a/0x400 mm/vmalloc.c:3479
delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3398
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8
BUG: Bad page state in process syz.0.1322 pfn:7f882
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7f882
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 11229, tgid 11228 (syz.0.1322), ts 213269845050, free_ts 213238449335
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
vfree+0x25a/0x400 mm/vmalloc.c:3479
delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3398
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8
BUG: Bad page state in process syz.0.1322 pfn:7f883
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7f883
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 11229, tgid 11228 (syz.0.1322), ts 213269825494, free_ts 213238463090
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
vfree+0x25a/0x400 mm/vmalloc.c:3479
delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3398
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8
BUG: Bad page state in process syz.0.1322 pfn:7f884
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7f884
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 11229, tgid 11228 (syz.0.1322), ts 213269806420, free_ts 213238476408
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
vfree+0x25a/0x400 mm/vmalloc.c:3479
delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3398
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8
BUG: Bad page state in process syz.0.1322 pfn:7f885
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7f885
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 11229, tgid 11228 (syz.0.1322), ts 213269787503, free_ts 213238489734
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
vfree+0x25a/0x400 mm/vmalloc.c:3479
delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3398
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8
BUG: Bad page state in process syz.0.1322 pfn:7f886
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7f886
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 11229, tgid 11228 (syz.0.1322), ts 213269768215, free_ts 213238503050
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
vfree+0x25a/0x400 mm/vmalloc.c:3479
delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3398
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8
BUG: Bad page state in process syz.0.1322 pfn:7f887
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7f887
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022eff000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 11229, tgid 11228 (syz.0.1322), ts 213269749145, free_ts 213238516282
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
prep_new_page mm/page_alloc.c:1897 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
__alloc_pages_noprof mm/page_alloc.c:5284 [inline]
alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616
page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5543 [inline]
netif_receive_generic_xdp net/core/dev.c:5584 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
vfree+0x25a/0x400 mm/vmalloc.c:3479
delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3398
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 11229 Comm: syz.0.1322 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978
bpf_xdp_shrink_data net/core/filter.c:4215 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239
____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:723 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5474
netif_receive_generic_xdp net/core/dev.c:5590 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5652
tun_get_user+0x24f0/0x3ed0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f650eb5d04e
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:00007f650cdf5fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f650cdf66c0 RCX: 00007f650eb5d04e
RDX: 000000000000fdef RSI: 0000200000000080 RDI: 00000000000000c8
RBP: 00007f650ec32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f650ee16038 R14: 00007f650ee15fa0 R15: 00007ffe69a64dd8