BUG: Bad page state in process syz.3.4625 pfn:2903e
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x2903e
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 0000000000000000
raw: ffff888000000000 3fffffffffffffff 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 23279, tgid 23277 (syz.3.4625), ts 1804971336299, free_ts 1803609434663
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
page_pool_alloc_frag_netmem+0x21d/0xa00 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+0x5be/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18
BUG: Bad page state in process syz.3.4625 pfn:2903d
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x2903d
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 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 23279, tgid 23277 (syz.3.4625), ts 1804971316599, free_ts 1803609468653
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
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+0x7f9/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18
BUG: Bad page state in process syz.3.4625 pfn:3519b
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x3519b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 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 23279, tgid 23277 (syz.3.4625), ts 1804971297179, free_ts 1803609503804
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
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+0x7f9/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18
BUG: Bad page state in process syz.3.4625 pfn:29df8
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888029df8000 pfn:0x29df8
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 0000000000000000
raw: ffff888029df8000 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 23279, tgid 23277 (syz.3.4625), ts 1804971277089, free_ts 1803609538813
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
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+0x7f9/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18
BUG: Bad page state in process syz.3.4625 pfn:321ad
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880321addc0 pfn:0x321ad
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 0000000000000000
raw: ffff8880321addc0 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 23279, tgid 23277 (syz.3.4625), ts 1804971251489, free_ts 1803609574513
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
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+0x7f9/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18
BUG: Bad page state in process syz.3.4625 pfn:93a87
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888093a87dc0 pfn:0x93a87
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 0000000000000000
raw: ffff888093a87dc0 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 23279, tgid 23277 (syz.3.4625), ts 1804971231919, free_ts 1803609610513
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
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+0x7f9/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18
BUG: Bad page state in process syz.3.4625 pfn:21bdc
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888021bdcdc0 pfn:0x21bdc
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 0000000000000000
raw: ffff888021bdcdc0 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 23279, tgid 23277 (syz.3.4625), ts 1804971212499, free_ts 1803609646153
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
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+0x7f9/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18
BUG: Bad page state in process syz.3.4625 pfn:96f3c
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x96f3c
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 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 23279, tgid 23277 (syz.3.4625), ts 1804971192519, free_ts 1803609682844
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
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+0x7f9/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18
BUG: Bad page state in process syz.3.4625 pfn:66f84
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x66f84
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 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 23279, tgid 23277 (syz.3.4625), ts 1804971172859, free_ts 1803609717953
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
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+0x7f9/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18
BUG: Bad page state in process syz.3.4625 pfn:3468d
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x3468d
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 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 23279, tgid 23277 (syz.3.4625), ts 1804971152268, free_ts 1803609754173
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
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+0x7f9/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18
BUG: Bad page state in process syz.3.4625 pfn:88ac8
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888088acc000 pfn:0x88ac8
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 0000000000000000
raw: ffff888088acc000 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 23279, tgid 23277 (syz.3.4625), ts 1804971132628, free_ts 1803609790294
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
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+0x7f9/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18
BUG: Bad page state in process syz.3.4625 pfn:5d82e
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x200000000 pfn:0x5d82e
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888023af2000 0000000000000000
raw: 0000000200000000 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 23279, tgid 23277 (syz.3.4625), ts 1804971113449, free_ts 1803609828033
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x153/0x170 mm/page_alloc.c:1888
prep_new_page mm/page_alloc.c:1896 [inline]
get_page_from_freelist+0x111d/0x3140 mm/page_alloc.c:3961
__alloc_frozen_pages_noprof+0x27c/0x2ba0 mm/page_alloc.c:5249
__alloc_pages_noprof mm/page_alloc.c:5283 [inline]
alloc_pages_bulk_noprof+0x782/0x1490 mm/page_alloc.c:5203
alloc_pages_bulk_node_noprof include/linux/gfp.h:255 [inline]
__page_pool_alloc_netmems_slow+0x1c6/0xc10 net/core/page_pool.c:616
page_pool_alloc_netmems net/core/page_pool.c:667 [inline]
page_pool_alloc_netmems+0xc4/0x1a0 net/core/page_pool.c:654
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+0x7f9/0xea0 net/core/skbuff.c:993
skb_cow_data_for_xdp+0x88/0xb0 net/core/skbuff.c:1027
netif_skb_check_for_xdp net/core/dev.c:5497 [inline]
netif_receive_generic_xdp net/core/dev.c:5538 [inline]
do_xdp_generic+0x56b/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23260 tgid 23258 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0x7ca/0x10a0 mm/page_alloc.c:2977
__pagetable_free include/linux/mm.h:3204 [inline]
pagetable_free include/linux/mm.h:3228 [inline]
pagetable_dtor_free include/linux/mm.h:3332 [inline]
__tlb_remove_table include/asm-generic/tlb.h:221 [inline]
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x2b2/0x390 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/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+0xa3/0xc0 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: 23279 Comm: syz.3.4625 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
bad_page.cold+0xbe/0xdf mm/page_alloc.c:676
free_page_is_bad mm/page_alloc.c:1120 [inline]
free_page_is_bad mm/page_alloc.c:1114 [inline]
__free_pages_prepare mm/page_alloc.c:1424 [inline]
__free_frozen_pages+0x7fe/0x10a0 mm/page_alloc.c:2977
page_frag_free+0x284/0x2e0 mm/page_frag_cache.c:169
__xdp_return+0x3cd/0xb90 net/core/xdp.c:448
bpf_xdp_shrink_data net/core/filter.c:4204 [inline]
bpf_xdp_frags_shrink_tail net/core/filter.c:4228 [inline]
____bpf_xdp_adjust_tail net/core/filter.c:4250 [inline]
bpf_xdp_adjust_tail+0x854/0xb60 net/core/filter.c:4243
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+0x614/0x1610 net/core/dev.c:5428
netif_receive_generic_xdp net/core/dev.c:5544 [inline]
do_xdp_generic+0x92e/0x12c0 net/core/dev.c:5606
tun_get_user+0x1bd2/0x3e10 drivers/net/tun.c:1872
tun_chr_write_iter+0xdc/0x200 drivers/net/tun.c:1999
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x6ac/0x1070 fs/read_write.c:688
ksys_write+0x12a/0x250 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f778db5cece
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:00007f778e9c7fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f778e9c86c0 RCX: 00007f778db5cece
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f778dc32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f778de16128 R14: 00007f778de16090 R15: 00007ffc91e0fa18