BUG: Bad page state in process syz.0.15 pfn:746e7
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880746e7ee0 pfn:0x746e7
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216e8000 0000000000000000
raw: ffff8880746e7ee0 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 6556, tgid 6555 (syz.0.15), ts 155260046514, free_ts 150745836087
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3858
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
__alloc_pages_noprof mm/page_alloc.c:5182 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5102
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_netmems_slow+0x127/0x740 net/core/page_pool.c:567
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+0xb47/0x13e0 net/core/skbuff.c:951
netif_skb_check_for_xdp net/core/dev.c:5329 [inline]
netif_receive_generic_xdp net/core/dev.c:5370 [inline]
do_xdp_generic+0x699/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
page last free pid 6297 tgid 6297 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbb1/0xd20 mm/page_alloc.c:2895
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xca8/0x1770 kernel/rcu/tree.c:2861
handle_softirqs+0x286/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.0.15 Not tainted 6.16.0-syzkaller-g186f3edfdd41 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1083 [inline]
free_pages_prepare mm/page_alloc.c:1387 [inline]
__free_frozen_pages+0xcd1/0xd20 mm/page_alloc.c:2895
bpf_xdp_shrink_data net/core/filter.c:4181 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4201
____bpf_xdp_adjust_tail net/core/filter.c:4226 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4219
bpf_prog_f476d5219b92964a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:718 [inline]
bpf_prog_run_xdp include/net/xdp.h:657 [inline]
bpf_prog_run_generic_xdp+0x64b/0x14c0 net/core/dev.c:5260
netif_receive_generic_xdp net/core/dev.c:5376 [inline]
do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0893d7e98f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f0894aea020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0893f45fa0 RCX: 00007f0893d7e98f
RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8
RBP: 00007f0893df3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0893f45fa0 R15: 00007fffd069c568
BUG: Bad page state in process syz.0.15 pfn:5a79b
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88805a79bdc0 pfn:0x5a79b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216e8000 0000000000000000
raw: ffff88805a79bdc0 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 6556, tgid 6555 (syz.0.15), ts 155260026844, free_ts 150745876690
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3858
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
__alloc_pages_noprof mm/page_alloc.c:5182 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5102
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_netmems_slow+0x127/0x740 net/core/page_pool.c:567
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+0xb47/0x13e0 net/core/skbuff.c:951
netif_skb_check_for_xdp net/core/dev.c:5329 [inline]
netif_receive_generic_xdp net/core/dev.c:5370 [inline]
do_xdp_generic+0x699/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
page last free pid 6297 tgid 6297 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbb1/0xd20 mm/page_alloc.c:2895
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xca8/0x1770 kernel/rcu/tree.c:2861
handle_softirqs+0x286/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.0.15 Tainted: G B 6.16.0-syzkaller-g186f3edfdd41 #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1083 [inline]
free_pages_prepare mm/page_alloc.c:1387 [inline]
__free_frozen_pages+0xcd1/0xd20 mm/page_alloc.c:2895
bpf_xdp_shrink_data net/core/filter.c:4181 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4201
____bpf_xdp_adjust_tail net/core/filter.c:4226 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4219
bpf_prog_f476d5219b92964a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:718 [inline]
bpf_prog_run_xdp include/net/xdp.h:657 [inline]
bpf_prog_run_generic_xdp+0x64b/0x14c0 net/core/dev.c:5260
netif_receive_generic_xdp net/core/dev.c:5376 [inline]
do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0893d7e98f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f0894aea020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0893f45fa0 RCX: 00007f0893d7e98f
RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8
RBP: 00007f0893df3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0893f45fa0 R15: 00007fffd069c568
BUG: Bad page state in process syz.0.15 pfn:75002
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888075002dc0 pfn:0x75002
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216e8000 0000000000000000
raw: ffff888075002dc0 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 6556, tgid 6555 (syz.0.15), ts 155260006504, free_ts 150745916915
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3858
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
__alloc_pages_noprof mm/page_alloc.c:5182 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5102
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_netmems_slow+0x127/0x740 net/core/page_pool.c:567
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+0xb47/0x13e0 net/core/skbuff.c:951
netif_skb_check_for_xdp net/core/dev.c:5329 [inline]
netif_receive_generic_xdp net/core/dev.c:5370 [inline]
do_xdp_generic+0x699/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
page last free pid 6297 tgid 6297 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbb1/0xd20 mm/page_alloc.c:2895
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xca8/0x1770 kernel/rcu/tree.c:2861
handle_softirqs+0x286/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.0.15 Tainted: G B 6.16.0-syzkaller-g186f3edfdd41 #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1083 [inline]
free_pages_prepare mm/page_alloc.c:1387 [inline]
__free_frozen_pages+0xcd1/0xd20 mm/page_alloc.c:2895
bpf_xdp_shrink_data net/core/filter.c:4181 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4201
____bpf_xdp_adjust_tail net/core/filter.c:4226 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4219
bpf_prog_f476d5219b92964a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:718 [inline]
bpf_prog_run_xdp include/net/xdp.h:657 [inline]
bpf_prog_run_generic_xdp+0x64b/0x14c0 net/core/dev.c:5260
netif_receive_generic_xdp net/core/dev.c:5376 [inline]
do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0893d7e98f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f0894aea020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0893f45fa0 RCX: 00007f0893d7e98f
RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8
RBP: 00007f0893df3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0893f45fa0 R15: 00007fffd069c568
BUG: Bad page state in process syz.0.15 pfn:28522
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888028522780 pfn:0x28522
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216e8000 0000000000000000
raw: ffff888028522780 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 6556, tgid 6555 (syz.0.15), ts 155259986650, free_ts 150747802178
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3858
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
__alloc_pages_noprof mm/page_alloc.c:5182 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5102
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_netmems_slow+0x127/0x740 net/core/page_pool.c:567
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+0xb47/0x13e0 net/core/skbuff.c:951
netif_skb_check_for_xdp net/core/dev.c:5329 [inline]
netif_receive_generic_xdp net/core/dev.c:5370 [inline]
do_xdp_generic+0x699/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
page last free pid 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbb1/0xd20 mm/page_alloc.c:2895
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xca8/0x1770 kernel/rcu/tree.c:2861
handle_softirqs+0x286/0x870 kernel/softirq.c:579
run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968
smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:160
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.0.15 Tainted: G B 6.16.0-syzkaller-g186f3edfdd41 #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1083 [inline]
free_pages_prepare mm/page_alloc.c:1387 [inline]
__free_frozen_pages+0xcd1/0xd20 mm/page_alloc.c:2895
bpf_xdp_shrink_data net/core/filter.c:4181 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4201
____bpf_xdp_adjust_tail net/core/filter.c:4226 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4219
bpf_prog_f476d5219b92964a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:718 [inline]
bpf_prog_run_xdp include/net/xdp.h:657 [inline]
bpf_prog_run_generic_xdp+0x64b/0x14c0 net/core/dev.c:5260
netif_receive_generic_xdp net/core/dev.c:5376 [inline]
do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0893d7e98f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f0894aea020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0893f45fa0 RCX: 00007f0893d7e98f
RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8
RBP: 00007f0893df3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0893f45fa0 R15: 00007fffd069c568
BUG: Bad page state in process syz.0.15 pfn:27da0
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888027da08c0 pfn:0x27da0
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216e8000 0000000000000000
raw: ffff888027da08c0 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 6556, tgid 6555 (syz.0.15), ts 155259966158, free_ts 150747828043
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3858
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
__alloc_pages_noprof mm/page_alloc.c:5182 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5102
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_netmems_slow+0x127/0x740 net/core/page_pool.c:567
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+0xb47/0x13e0 net/core/skbuff.c:951
netif_skb_check_for_xdp net/core/dev.c:5329 [inline]
netif_receive_generic_xdp net/core/dev.c:5370 [inline]
do_xdp_generic+0x699/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
page last free pid 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbb1/0xd20 mm/page_alloc.c:2895
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xca8/0x1770 kernel/rcu/tree.c:2861
handle_softirqs+0x286/0x870 kernel/softirq.c:579
run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968
smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:160
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.0.15 Tainted: G B 6.16.0-syzkaller-g186f3edfdd41 #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1083 [inline]
free_pages_prepare mm/page_alloc.c:1387 [inline]
__free_frozen_pages+0xcd1/0xd20 mm/page_alloc.c:2895
bpf_xdp_shrink_data net/core/filter.c:4181 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4201
____bpf_xdp_adjust_tail net/core/filter.c:4226 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4219
bpf_prog_f476d5219b92964a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:718 [inline]
bpf_prog_run_xdp include/net/xdp.h:657 [inline]
bpf_prog_run_generic_xdp+0x64b/0x14c0 net/core/dev.c:5260
netif_receive_generic_xdp net/core/dev.c:5376 [inline]
do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0893d7e98f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f0894aea020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0893f45fa0 RCX: 00007f0893d7e98f
RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8
RBP: 00007f0893df3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0893f45fa0 R15: 00007fffd069c568
BUG: Bad page state in process syz.0.15 pfn:70f22
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888070f22ee0 pfn:0x70f22
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216e8000 0000000000000000
raw: ffff888070f22ee0 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 6556, tgid 6555 (syz.0.15), ts 155259946073, free_ts 150747951919
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3858
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
__alloc_pages_noprof mm/page_alloc.c:5182 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5102
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_netmems_slow+0x127/0x740 net/core/page_pool.c:567
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+0xb47/0x13e0 net/core/skbuff.c:951
netif_skb_check_for_xdp net/core/dev.c:5329 [inline]
netif_receive_generic_xdp net/core/dev.c:5370 [inline]
do_xdp_generic+0x699/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
page last free pid 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbb1/0xd20 mm/page_alloc.c:2895
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xca8/0x1770 kernel/rcu/tree.c:2861
handle_softirqs+0x286/0x870 kernel/softirq.c:579
run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968
smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:160
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.0.15 Tainted: G B 6.16.0-syzkaller-g186f3edfdd41 #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1083 [inline]
free_pages_prepare mm/page_alloc.c:1387 [inline]
__free_frozen_pages+0xcd1/0xd20 mm/page_alloc.c:2895
bpf_xdp_shrink_data net/core/filter.c:4181 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4201
____bpf_xdp_adjust_tail net/core/filter.c:4226 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4219
bpf_prog_f476d5219b92964a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:718 [inline]
bpf_prog_run_xdp include/net/xdp.h:657 [inline]
bpf_prog_run_generic_xdp+0x64b/0x14c0 net/core/dev.c:5260
netif_receive_generic_xdp net/core/dev.c:5376 [inline]
do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0893d7e98f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f0894aea020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0893f45fa0 RCX: 00007f0893d7e98f
RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8
RBP: 00007f0893df3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0893f45fa0 R15: 00007fffd069c568
BUG: Bad page state in process syz.0.15 pfn:33ed5
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888033ed5ee0 pfn:0x33ed5
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216e8000 0000000000000000
raw: ffff888033ed5ee0 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 6556, tgid 6555 (syz.0.15), ts 155259926259, free_ts 150747980814
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3858
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
__alloc_pages_noprof mm/page_alloc.c:5182 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5102
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_netmems_slow+0x127/0x740 net/core/page_pool.c:567
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+0xb47/0x13e0 net/core/skbuff.c:951
netif_skb_check_for_xdp net/core/dev.c:5329 [inline]
netif_receive_generic_xdp net/core/dev.c:5370 [inline]
do_xdp_generic+0x699/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
page last free pid 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbb1/0xd20 mm/page_alloc.c:2895
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xca8/0x1770 kernel/rcu/tree.c:2861
handle_softirqs+0x286/0x870 kernel/softirq.c:579
run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968
smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:160
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.0.15 Tainted: G B 6.16.0-syzkaller-g186f3edfdd41 #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1083 [inline]
free_pages_prepare mm/page_alloc.c:1387 [inline]
__free_frozen_pages+0xcd1/0xd20 mm/page_alloc.c:2895
bpf_xdp_shrink_data net/core/filter.c:4181 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4201
____bpf_xdp_adjust_tail net/core/filter.c:4226 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4219
bpf_prog_f476d5219b92964a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:718 [inline]
bpf_prog_run_xdp include/net/xdp.h:657 [inline]
bpf_prog_run_generic_xdp+0x64b/0x14c0 net/core/dev.c:5260
netif_receive_generic_xdp net/core/dev.c:5376 [inline]
do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0893d7e98f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f0894aea020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0893f45fa0 RCX: 00007f0893d7e98f
RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8
RBP: 00007f0893df3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0893f45fa0 R15: 00007fffd069c568
BUG: Bad page state in process syz.0.15 pfn:314b2
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880314b2dd0 pfn:0x314b2
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216e8000 0000000000000000
raw: ffff8880314b2dd0 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 6556, tgid 6555 (syz.0.15), ts 155259906701, free_ts 150748005054
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3858
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
__alloc_pages_noprof mm/page_alloc.c:5182 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5102
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_netmems_slow+0x127/0x740 net/core/page_pool.c:567
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+0xb47/0x13e0 net/core/skbuff.c:951
netif_skb_check_for_xdp net/core/dev.c:5329 [inline]
netif_receive_generic_xdp net/core/dev.c:5370 [inline]
do_xdp_generic+0x699/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
page last free pid 15 tgid 15 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbb1/0xd20 mm/page_alloc.c:2895
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0xca8/0x1770 kernel/rcu/tree.c:2861
handle_softirqs+0x286/0x870 kernel/softirq.c:579
run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968
smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:160
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.0.15 Tainted: G B 6.16.0-syzkaller-g186f3edfdd41 #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1083 [inline]
free_pages_prepare mm/page_alloc.c:1387 [inline]
__free_frozen_pages+0xcd1/0xd20 mm/page_alloc.c:2895
bpf_xdp_shrink_data net/core/filter.c:4181 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4201
____bpf_xdp_adjust_tail net/core/filter.c:4226 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4219
bpf_prog_f476d5219b92964a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:718 [inline]
bpf_prog_run_xdp include/net/xdp.h:657 [inline]
bpf_prog_run_generic_xdp+0x64b/0x14c0 net/core/dev.c:5260
netif_receive_generic_xdp net/core/dev.c:5376 [inline]
do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0893d7e98f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f0894aea020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0893f45fa0 RCX: 00007f0893d7e98f
RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8
RBP: 00007f0893df3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0893f45fa0 R15: 00007fffd069c568
BUG: Bad page state in process syz.0.15 pfn:75a03
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888075a03b40 pfn:0x75a03
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216e8000 0000000000000000
raw: ffff888075a03b40 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 6556, tgid 6555 (syz.0.15), ts 155259886423, free_ts 155188140269
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3858
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
__alloc_pages_noprof mm/page_alloc.c:5182 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5102
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_netmems_slow+0x127/0x740 net/core/page_pool.c:567
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+0xb47/0x13e0 net/core/skbuff.c:951
netif_skb_check_for_xdp net/core/dev.c:5329 [inline]
netif_receive_generic_xdp net/core/dev.c:5370 [inline]
do_xdp_generic+0x699/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
page last free pid 59 tgid 59 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbb1/0xd20 mm/page_alloc.c:2895
__slab_free+0x303/0x3c0 mm/slub.c:4591
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4180 [inline]
slab_alloc_node mm/slub.c:4229 [inline]
kmem_cache_alloc_lru_noprof+0x1c6/0x3d0 mm/slub.c:4248
__d_alloc+0x36/0x7a0 fs/dcache.c:1690
d_alloc_parallel+0xe5/0x15e0 fs/dcache.c:2549
__lookup_slow+0x116/0x3d0 fs/namei.c:1793
simple_start_creating+0xfd/0x1e0 fs/libfs.c:2303
start_creating+0x10f/0x180 fs/debugfs/inode.c:387
__debugfs_create_file+0x79/0x4f0 fs/debugfs/inode.c:422
debugfs_create_file_short+0x3f/0x60 fs/debugfs/inode.c:470
ieee80211_sta_debugfs_add+0x1ba/0x850 net/mac80211/debugfs_sta.c:1257
sta_info_insert_finish net/mac80211/sta_info.c:941 [inline]
sta_info_insert_rcu+0xfac/0x1940 net/mac80211/sta_info.c:1009
ieee80211_ibss_finish_sta+0x293/0x380 net/mac80211/ibss.c:568
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.0.15 Tainted: G B 6.16.0-syzkaller-g186f3edfdd41 #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1083 [inline]
free_pages_prepare mm/page_alloc.c:1387 [inline]
__free_frozen_pages+0xcd1/0xd20 mm/page_alloc.c:2895
bpf_xdp_shrink_data net/core/filter.c:4181 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4201
____bpf_xdp_adjust_tail net/core/filter.c:4226 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4219
bpf_prog_f476d5219b92964a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:718 [inline]
bpf_prog_run_xdp include/net/xdp.h:657 [inline]
bpf_prog_run_generic_xdp+0x64b/0x14c0 net/core/dev.c:5260
netif_receive_generic_xdp net/core/dev.c:5376 [inline]
do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0893d7e98f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f0894aea020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0893f45fa0 RCX: 00007f0893d7e98f
RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8
RBP: 00007f0893df3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0893f45fa0 R15: 00007fffd069c568
BUG: Bad page state in process syz.0.15 pfn:7470b
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807470b000 pfn:0x7470b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216e8000 0000000000000000
raw: ffff88807470b000 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 6556, tgid 6555 (syz.0.15), ts 155259866627, free_ts 155193278115
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3858
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
__alloc_pages_noprof mm/page_alloc.c:5182 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5102
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_netmems_slow+0x127/0x740 net/core/page_pool.c:567
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+0xb47/0x13e0 net/core/skbuff.c:951
netif_skb_check_for_xdp net/core/dev.c:5329 [inline]
netif_receive_generic_xdp net/core/dev.c:5370 [inline]
do_xdp_generic+0x699/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
page last free pid 6457 tgid 6457 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbb1/0xd20 mm/page_alloc.c:2895
discard_slab mm/slub.c:2753 [inline]
__put_partials+0x156/0x1a0 mm/slub.c:3218
put_cpu_partial+0x17c/0x250 mm/slub.c:3293
__slab_free+0x2d5/0x3c0 mm/slub.c:4550
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4180 [inline]
slab_alloc_node mm/slub.c:4229 [inline]
kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4236
getname_kernel+0x5a/0x2f0 fs/namei.c:249
kern_path+0x1d/0x50 fs/namei.c:2815
do_loopback+0xea/0x430 fs/namespace.c:3015
do_mount fs/namespace.c:4133 [inline]
__do_sys_mount fs/namespace.c:4344 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4321
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.0.15 Tainted: G B 6.16.0-syzkaller-g186f3edfdd41 #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1083 [inline]
free_pages_prepare mm/page_alloc.c:1387 [inline]
__free_frozen_pages+0xcd1/0xd20 mm/page_alloc.c:2895
bpf_xdp_shrink_data net/core/filter.c:4181 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4201
____bpf_xdp_adjust_tail net/core/filter.c:4226 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4219
bpf_prog_f476d5219b92964a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:718 [inline]
bpf_prog_run_xdp include/net/xdp.h:657 [inline]
bpf_prog_run_generic_xdp+0x64b/0x14c0 net/core/dev.c:5260
netif_receive_generic_xdp net/core/dev.c:5376 [inline]
do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0893d7e98f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f0894aea020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0893f45fa0 RCX: 00007f0893d7e98f
RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8
RBP: 00007f0893df3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0893f45fa0 R15: 00007fffd069c568
BUG: Bad page state in process syz.0.15 pfn:7470c
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807470c000 pfn:0x7470c
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216e8000 0000000000000000
raw: ffff88807470c000 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 6556, tgid 6555 (syz.0.15), ts 155259846928, free_ts 155193296194
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851
prep_new_page mm/page_alloc.c:1859 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3858
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148
__alloc_pages_noprof mm/page_alloc.c:5182 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5102
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_netmems_slow+0x127/0x740 net/core/page_pool.c:567
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+0xb47/0x13e0 net/core/skbuff.c:951
netif_skb_check_for_xdp net/core/dev.c:5329 [inline]
netif_receive_generic_xdp net/core/dev.c:5370 [inline]
do_xdp_generic+0x699/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
page last free pid 6457 tgid 6457 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbb1/0xd20 mm/page_alloc.c:2895
discard_slab mm/slub.c:2753 [inline]
__put_partials+0x156/0x1a0 mm/slub.c:3218
put_cpu_partial+0x17c/0x250 mm/slub.c:3293
__slab_free+0x2d5/0x3c0 mm/slub.c:4550
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4180 [inline]
slab_alloc_node mm/slub.c:4229 [inline]
kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4236
getname_kernel+0x5a/0x2f0 fs/namei.c:249
kern_path+0x1d/0x50 fs/namei.c:2815
do_loopback+0xea/0x430 fs/namespace.c:3015
do_mount fs/namespace.c:4133 [inline]
__do_sys_mount fs/namespace.c:4344 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4321
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.0.15 Tainted: G B 6.16.0-syzkaller-g186f3edfdd41 #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:650
free_page_is_bad mm/page_alloc.c:1083 [inline]
free_pages_prepare mm/page_alloc.c:1387 [inline]
__free_frozen_pages+0xcd1/0xd20 mm/page_alloc.c:2895
bpf_xdp_shrink_data net/core/filter.c:4181 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4201
____bpf_xdp_adjust_tail net/core/filter.c:4226 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4219
bpf_prog_f476d5219b92964a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:718 [inline]
bpf_prog_run_xdp include/net/xdp.h:657 [inline]
bpf_prog_run_generic_xdp+0x64b/0x14c0 net/core/dev.c:5260
netif_receive_generic_xdp net/core/dev.c:5376 [inline]
do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5438
__netif_receive_skb_core+0x17f9/0x4020 net/core/dev.c:5789
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
netif_receive_skb_internal net/core/dev.c:6178 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6237
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x2aa2/0x3e20 drivers/net/tun.c:1950
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1996
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x54b/0xa90 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0893d7e98f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007f0894aea020 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0893f45fa0 RCX: 00007f0893d7e98f
RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8
RBP: 00007f0893df3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0893f45fa0 R15: 00007fffd069c568