BUG: Bad page state in process syz.0.17 pfn:34b1e
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888034b1e000 pfn:0x34b1e
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff888034b1e000 3fffffffffffffff 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438777874, free_ts 112265589849
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_netmems net/core/page_pool.c:672 [inline]
page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1101
page_pool_alloc_netmem include/net/page_pool/helpers.h:131 [inline]
page_pool_alloc include/net/page_pool/helpers.h:167 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline]
skb_pp_cow_data+0xcb7/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
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:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
__tlb_remove_table_free mm/mmu_gather.c:228 [inline]
tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0
BUG: Bad page state in process syz.0.17 pfn:2aa44
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802aa44640 pfn:0x2aa44
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff88802aa44640 0000000000000001 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438747120, free_ts 112279950601
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_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+0xc91/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5761 tgid 5761 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0
BUG: Bad page state in process syz.0.17 pfn:33d0d
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888033d0ddc0 pfn:0x33d0d
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff888033d0ddc0 0000000000000001 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438730265, free_ts 112279990326
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_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+0xc91/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5761 tgid 5761 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0
BUG: Bad page state in process syz.0.17 pfn:759ed
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880759edb40 pfn:0x759ed
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff8880759edb40 0000000000000001 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438712889, free_ts 112280018594
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_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+0xc91/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5761 tgid 5761 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0
BUG: Bad page state in process syz.0.17 pfn:759e6
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880759e6780 pfn:0x759e6
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff8880759e6780 0000000000000001 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438695913, free_ts 112280036880
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_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+0xc91/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5761 tgid 5761 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0
BUG: Bad page state in process syz.0.17 pfn:759e8
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880759e8280 pfn:0x759e8
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff8880759e8280 0000000000000001 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438678454, free_ts 112280085534
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_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+0xc91/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5761 tgid 5761 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0
BUG: Bad page state in process syz.0.17 pfn:759f4
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880759f4140 pfn:0x759f4
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff8880759f4140 0000000000000001 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438661636, free_ts 112280146890
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_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+0xc91/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5761 tgid 5761 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0
BUG: Bad page state in process syz.0.17 pfn:759db
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880759db000 pfn:0x759db
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff8880759db000 0000000000000001 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438645652, free_ts 112280208165
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_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+0xc91/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5761 tgid 5761 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0
BUG: Bad page state in process syz.0.17 pfn:759d8
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880759d8000 pfn:0x759d8
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff8880759d8000 0000000000000001 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438629813, free_ts 112280226200
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_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+0xc91/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5761 tgid 5761 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0
BUG: Bad page state in process syz.0.17 pfn:759d7
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880759d7000 pfn:0x759d7
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff8880759d7000 0000000000000001 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438614406, free_ts 112280311815
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_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+0xc91/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5761 tgid 5761 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0
BUG: Bad page state in process syz.0.17 pfn:759dd
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880759dd000 pfn:0x759dd
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff8880759dd000 0000000000000001 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438598564, free_ts 112280359096
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_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+0xc91/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
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:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0
BUG: Bad page state in process syz.0.17 pfn:759ea
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880759ea000 pfn:0x759ea
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f9(unknown)
raw: 00fff00000000000 0000000000000000 ffff88801af50000 0000000000000000
raw: ffff8880759ea000 0000000000000001 00000000f9000000 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 5847, tgid 5847 (syz.0.17), ts 112438583286, free_ts 112280375441
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
prep_new_page mm/page_alloc.c:1866 [inline]
get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260
alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180
alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline]
__page_pool_alloc_netmems_slow+0x151/0x7b0 net/core/page_pool.c:621
page_pool_alloc_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+0xc91/0x19b0 net/core/skbuff.c:982
netif_skb_check_for_xdp net/core/dev.c:5557 [inline]
netif_receive_generic_xdp net/core/dev.c:5598 [inline]
do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
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:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
run_ksoftirqd+0x36/0x60 kernel/softirq.c:1076
smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
CPU: 0 UID: 0 PID: 5847 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
bad_page+0x17f/0x1c0 mm/page_alloc.c:632
bpf_xdp_shrink_data net/core/filter.c:4211 [inline]
bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235
____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250
bpf_prog_5d7dc57dfd7f985a+0x1e/0x24
__bpf_prog_run include/linux/filter.h:722 [inline]
bpf_prog_run_xdp include/net/xdp.h:696 [inline]
bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488
netif_receive_generic_xdp net/core/dev.c:5604 [inline]
do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666
tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x61d/0xb90 fs/read_write.c:688
ksys_write+0x150/0x270 fs/read_write.c:740
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f58e5f5d60e
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:00007ffdf21d6048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000555568bf4500 RCX: 00007f58e5f5d60e
RDX: 000000000000fe54 RSI: 0000200000001b00 RDI: 00000000000000c8
RBP: 00007f58e6032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f58e6215fac R14: 00007f58e6215fa0 R15: 00007f58e6215fa0