BUG: Bad page state in process syz.3.7535 pfn:8f9e3
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8f9e3
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 0000000000000000
raw: 0000000000000000 3fffffffffffffff 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 900, tgid 899 (syz.3.7535), ts 736088723509, free_ts 736056546589
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_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xc43/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638
BUG: Bad page state in process syz.3.7535 pfn:8f9e4
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8f9e4
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 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 900, tgid 899 (syz.3.7535), ts 736088705584, free_ts 736056585929
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+0xc21/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638
BUG: Bad page state in process syz.3.7535 pfn:8f9e5
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8f9e5
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 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 900, tgid 899 (syz.3.7535), ts 736088689377, free_ts 736056603454
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+0xc21/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638
BUG: Bad page state in process syz.3.7535 pfn:ae8a2
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880ae8a2f50 pfn:0xae8a2
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 0000000000000000
raw: ffff8880ae8a2f50 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 900, tgid 899 (syz.3.7535), ts 736088661234, free_ts 736056642998
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+0xc21/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638
BUG: Bad page state in process syz.3.7535 pfn:61e06
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x61e06
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 0000000000000000
raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 900, tgid 899 (syz.3.7535), ts 736088642999, free_ts 736056691390
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+0xc21/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638
BUG: Bad page state in process syz.3.7535 pfn:5f1b1
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88805f1b1000 pfn:0x5f1b1
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 0000000000000000
raw: ffff88805f1b1000 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 900, tgid 899 (syz.3.7535), ts 736088626364, free_ts 736056725357
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+0xc21/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638
BUG: Bad page state in process syz.3.7535 pfn:4654f
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88804654f000 pfn:0x4654f
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 0000000000000000
raw: ffff88804654f000 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 900, tgid 899 (syz.3.7535), ts 736088610997, free_ts 736056764201
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+0xc21/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638
BUG: Bad page state in process syz.3.7535 pfn:254f7
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x254f7
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 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 900, tgid 899 (syz.3.7535), ts 736088593243, free_ts 736056805355
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+0xc21/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638
BUG: Bad page state in process syz.3.7535 pfn:254f6
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x254f6
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 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 900, tgid 899 (syz.3.7535), ts 736088577282, free_ts 736056854864
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+0xc21/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638
BUG: Bad page state in process syz.3.7535 pfn:254f5
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x254f5
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 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 900, tgid 899 (syz.3.7535), ts 736088561973, free_ts 736056895611
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+0xc21/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638
BUG: Bad page state in process syz.3.7535 pfn:254f4
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x254f4
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 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 900, tgid 899 (syz.3.7535), ts 736088545913, free_ts 736056936361
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+0xc21/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638
BUG: Bad page state in process syz.3.7535 pfn:254f3
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x254f3
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff88801c2ed000 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 900, tgid 899 (syz.3.7535), ts 736088529766, free_ts 736056976668
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+0xc21/0x1680 net/core/skbuff.c:993
netif_skb_check_for_xdp net/core/dev.c:5515 [inline]
netif_receive_generic_xdp net/core/dev.c:5556 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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 882 tgid 880 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_call_function_single arch/x86/kernel/smp.c:266 [inline]
sysvec_call_function_single+0xa3/0xc0 arch/x86/kernel/smp.c:266
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:704
Modules linked in:
CPU: 0 UID: 0 PID: 900 Comm: syz.3.7535 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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:4203 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4227
____bpf_xdp_adjust_tail net/core/filter.c:4249 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4242
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:5446
netif_receive_generic_xdp net/core/dev.c:5562 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5624
tun_get_user+0x247d/0x3dd0 drivers/net/tun.c:1872
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c: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: 0033:0x7f332175cfce
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:00007f3322701fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f33227026c0 RCX: 00007f332175cfce
RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8
RBP: 00007f3321832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3321a16038 R14: 00007f3321a15fa0 R15: 00007fffe7052638