BUG: Bad page state in process syz.0.3050 pfn:28480
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888028480500 pfn:0x28480
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216da000 0000000000000000
raw: ffff888028480500 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 21032, tgid 21030 (syz.0.3050), ts 1643918287370, free_ts 1643247629927
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
__alloc_pages_noprof mm/page_alloc.c:4993 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_pages_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:160 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:181 [inline]
skb_pp_cow_data+0xb47/0x13e0 net/core/skbuff.c:952
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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 3482 tgid 3482 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
vfree+0x25a/0x400 mm/vmalloc.c:3426
call_nexthop_notifier net/ipv4/nexthop.c:455 [inline]
nexthops_dump net/ipv4/nexthop.c:3916 [inline]
__unregister_nexthop_notifier+0x149/0x1f0 net/ipv4/nexthop.c:3948
unregister_nexthop_notifier+0x22/0x40 net/ipv4/nexthop.c:3958
nsim_fib_destroy+0x89/0x180 drivers/net/netdevsim/fib.c:1657
nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1665
nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
ops_undo_list+0x187/0x990 net/core/net_namespace.c:235
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/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: 21032 Comm: syz.0.3050 Not tainted 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:506
free_page_is_bad mm/page_alloc.c:939 [inline]
free_pages_prepare mm/page_alloc.c:1240 [inline]
__free_frozen_pages+0xe17/0xe70 mm/page_alloc.c:2706
bpf_xdp_shrink_data net/core/filter.c:4172 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4192
____bpf_xdp_adjust_tail net/core/filter.c:4217 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4210
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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: 0033:0x7f4f62d8d3df
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:00007f4f63b26000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4f62fb5fa0 RCX: 00007f4f62d8d3df
RDX: 0000000000011dc0 RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f4f62e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f62fb5fa0 R15: 00007fff7ba279e8
BUG: Bad page state in process syz.0.3050 pfn:2fca2
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802fca2780 pfn:0x2fca2
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216da000 0000000000000000
raw: ffff88802fca2780 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 21032, tgid 21030 (syz.0.3050), ts 1643918273111, free_ts 1643247649097
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
__alloc_pages_noprof mm/page_alloc.c:4993 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_pages_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:160 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:181 [inline]
skb_pp_cow_data+0xb47/0x13e0 net/core/skbuff.c:952
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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 3482 tgid 3482 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
vfree+0x25a/0x400 mm/vmalloc.c:3426
call_nexthop_notifier net/ipv4/nexthop.c:455 [inline]
nexthops_dump net/ipv4/nexthop.c:3916 [inline]
__unregister_nexthop_notifier+0x149/0x1f0 net/ipv4/nexthop.c:3948
unregister_nexthop_notifier+0x22/0x40 net/ipv4/nexthop.c:3958
nsim_fib_destroy+0x89/0x180 drivers/net/netdevsim/fib.c:1657
nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1665
nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
ops_undo_list+0x187/0x990 net/core/net_namespace.c:235
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/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: 21032 Comm: syz.0.3050 Tainted: G B 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:506
free_page_is_bad mm/page_alloc.c:939 [inline]
free_pages_prepare mm/page_alloc.c:1240 [inline]
__free_frozen_pages+0xe17/0xe70 mm/page_alloc.c:2706
bpf_xdp_shrink_data net/core/filter.c:4172 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4192
____bpf_xdp_adjust_tail net/core/filter.c:4217 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4210
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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: 0033:0x7f4f62d8d3df
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:00007f4f63b26000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4f62fb5fa0 RCX: 00007f4f62d8d3df
RDX: 0000000000011dc0 RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f4f62e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f62fb5fa0 R15: 00007fff7ba279e8
BUG: Bad page state in process syz.0.3050 pfn:32c2c
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888032c2c8c0 pfn:0x32c2c
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216da000 0000000000000000
raw: ffff888032c2c8c0 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 21032, tgid 21030 (syz.0.3050), ts 1643918258850, free_ts 1643247668767
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
__alloc_pages_noprof mm/page_alloc.c:4993 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_pages_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:160 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:181 [inline]
skb_pp_cow_data+0xb47/0x13e0 net/core/skbuff.c:952
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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 3482 tgid 3482 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
vfree+0x25a/0x400 mm/vmalloc.c:3426
call_nexthop_notifier net/ipv4/nexthop.c:455 [inline]
nexthops_dump net/ipv4/nexthop.c:3916 [inline]
__unregister_nexthop_notifier+0x149/0x1f0 net/ipv4/nexthop.c:3948
unregister_nexthop_notifier+0x22/0x40 net/ipv4/nexthop.c:3958
nsim_fib_destroy+0x89/0x180 drivers/net/netdevsim/fib.c:1657
nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1665
nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
ops_undo_list+0x187/0x990 net/core/net_namespace.c:235
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/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: 21032 Comm: syz.0.3050 Tainted: G B 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:506
free_page_is_bad mm/page_alloc.c:939 [inline]
free_pages_prepare mm/page_alloc.c:1240 [inline]
__free_frozen_pages+0xe17/0xe70 mm/page_alloc.c:2706
bpf_xdp_shrink_data net/core/filter.c:4172 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4192
____bpf_xdp_adjust_tail net/core/filter.c:4217 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4210
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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: 0033:0x7f4f62d8d3df
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:00007f4f63b26000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4f62fb5fa0 RCX: 00007f4f62d8d3df
RDX: 0000000000011dc0 RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f4f62e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f62fb5fa0 R15: 00007fff7ba279e8
BUG: Bad page state in process syz.0.3050 pfn:65137
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888065137140 pfn:0x65137
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216da000 0000000000000000
raw: ffff888065137140 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 21032, tgid 21030 (syz.0.3050), ts 1643918244640, free_ts 1643247687267
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
__alloc_pages_noprof mm/page_alloc.c:4993 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_pages_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:160 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:181 [inline]
skb_pp_cow_data+0xb47/0x13e0 net/core/skbuff.c:952
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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 3482 tgid 3482 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
vfree+0x25a/0x400 mm/vmalloc.c:3426
call_nexthop_notifier net/ipv4/nexthop.c:455 [inline]
nexthops_dump net/ipv4/nexthop.c:3916 [inline]
__unregister_nexthop_notifier+0x149/0x1f0 net/ipv4/nexthop.c:3948
unregister_nexthop_notifier+0x22/0x40 net/ipv4/nexthop.c:3958
nsim_fib_destroy+0x89/0x180 drivers/net/netdevsim/fib.c:1657
nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1665
nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
ops_undo_list+0x187/0x990 net/core/net_namespace.c:235
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/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: 21032 Comm: syz.0.3050 Tainted: G B 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:506
free_page_is_bad mm/page_alloc.c:939 [inline]
free_pages_prepare mm/page_alloc.c:1240 [inline]
__free_frozen_pages+0xe17/0xe70 mm/page_alloc.c:2706
bpf_xdp_shrink_data net/core/filter.c:4172 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4192
____bpf_xdp_adjust_tail net/core/filter.c:4217 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4210
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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: 0033:0x7f4f62d8d3df
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:00007f4f63b26000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4f62fb5fa0 RCX: 00007f4f62d8d3df
RDX: 0000000000011dc0 RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f4f62e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f62fb5fa0 R15: 00007fff7ba279e8
BUG: Bad page state in process syz.0.3050 pfn:468dd
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x468dd
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216da000 0000000000000000
raw: 0000000000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 21032, tgid 21030 (syz.0.3050), ts 1643918230440, free_ts 1643247706147
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
__alloc_pages_noprof mm/page_alloc.c:4993 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_pages_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:160 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:181 [inline]
skb_pp_cow_data+0xb47/0x13e0 net/core/skbuff.c:952
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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 3482 tgid 3482 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
vfree+0x25a/0x400 mm/vmalloc.c:3426
call_nexthop_notifier net/ipv4/nexthop.c:455 [inline]
nexthops_dump net/ipv4/nexthop.c:3916 [inline]
__unregister_nexthop_notifier+0x149/0x1f0 net/ipv4/nexthop.c:3948
unregister_nexthop_notifier+0x22/0x40 net/ipv4/nexthop.c:3958
nsim_fib_destroy+0x89/0x180 drivers/net/netdevsim/fib.c:1657
nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1665
nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
ops_undo_list+0x187/0x990 net/core/net_namespace.c:235
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/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: 21032 Comm: syz.0.3050 Tainted: G B 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:506
free_page_is_bad mm/page_alloc.c:939 [inline]
free_pages_prepare mm/page_alloc.c:1240 [inline]
__free_frozen_pages+0xe17/0xe70 mm/page_alloc.c:2706
bpf_xdp_shrink_data net/core/filter.c:4172 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4192
____bpf_xdp_adjust_tail net/core/filter.c:4217 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4210
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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: 0033:0x7f4f62d8d3df
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:00007f4f63b26000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4f62fb5fa0 RCX: 00007f4f62d8d3df
RDX: 0000000000011dc0 RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f4f62e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f62fb5fa0 R15: 00007fff7ba279e8
BUG: Bad page state in process syz.0.3050 pfn:327a9
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x327a9
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216da000 0000000000000000
raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 21032, tgid 21030 (syz.0.3050), ts 1643918216240, free_ts 1643247724687
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
__alloc_pages_noprof mm/page_alloc.c:4993 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_pages_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:160 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:181 [inline]
skb_pp_cow_data+0xb47/0x13e0 net/core/skbuff.c:952
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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 3482 tgid 3482 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
vfree+0x25a/0x400 mm/vmalloc.c:3426
call_nexthop_notifier net/ipv4/nexthop.c:455 [inline]
nexthops_dump net/ipv4/nexthop.c:3916 [inline]
__unregister_nexthop_notifier+0x149/0x1f0 net/ipv4/nexthop.c:3948
unregister_nexthop_notifier+0x22/0x40 net/ipv4/nexthop.c:3958
nsim_fib_destroy+0x89/0x180 drivers/net/netdevsim/fib.c:1657
nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1665
nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
ops_undo_list+0x187/0x990 net/core/net_namespace.c:235
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/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: 21032 Comm: syz.0.3050 Tainted: G B 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:506
free_page_is_bad mm/page_alloc.c:939 [inline]
free_pages_prepare mm/page_alloc.c:1240 [inline]
__free_frozen_pages+0xe17/0xe70 mm/page_alloc.c:2706
bpf_xdp_shrink_data net/core/filter.c:4172 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4192
____bpf_xdp_adjust_tail net/core/filter.c:4217 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4210
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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: 0033:0x7f4f62d8d3df
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:00007f4f63b26000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4f62fb5fa0 RCX: 00007f4f62d8d3df
RDX: 0000000000011dc0 RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f4f62e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f62fb5fa0 R15: 00007fff7ba279e8
BUG: Bad page state in process syz.0.3050 pfn:30fb5
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888030fb5c80 pfn:0x30fb5
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216da000 0000000000000000
raw: ffff888030fb5c80 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 21032, tgid 21030 (syz.0.3050), ts 1643918201701, free_ts 1643247744057
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
__alloc_pages_noprof mm/page_alloc.c:4993 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_pages_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:160 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:181 [inline]
skb_pp_cow_data+0xb47/0x13e0 net/core/skbuff.c:952
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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 3482 tgid 3482 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
vfree+0x25a/0x400 mm/vmalloc.c:3426
call_nexthop_notifier net/ipv4/nexthop.c:455 [inline]
nexthops_dump net/ipv4/nexthop.c:3916 [inline]
__unregister_nexthop_notifier+0x149/0x1f0 net/ipv4/nexthop.c:3948
unregister_nexthop_notifier+0x22/0x40 net/ipv4/nexthop.c:3958
nsim_fib_destroy+0x89/0x180 drivers/net/netdevsim/fib.c:1657
nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1665
nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
ops_undo_list+0x187/0x990 net/core/net_namespace.c:235
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/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: 21032 Comm: syz.0.3050 Tainted: G B 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:506
free_page_is_bad mm/page_alloc.c:939 [inline]
free_pages_prepare mm/page_alloc.c:1240 [inline]
__free_frozen_pages+0xe17/0xe70 mm/page_alloc.c:2706
bpf_xdp_shrink_data net/core/filter.c:4172 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4192
____bpf_xdp_adjust_tail net/core/filter.c:4217 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4210
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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: 0033:0x7f4f62d8d3df
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:00007f4f63b26000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4f62fb5fa0 RCX: 00007f4f62d8d3df
RDX: 0000000000011dc0 RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f4f62e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f62fb5fa0 R15: 00007fff7ba279e8
BUG: Bad page state in process syz.0.3050 pfn:679ea
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880679eadc0 pfn:0x679ea
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216da000 0000000000000000
raw: ffff8880679eadc0 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 21032, tgid 21030 (syz.0.3050), ts 1643918187551, free_ts 1643247763287
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
__alloc_pages_noprof mm/page_alloc.c:4993 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_pages_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:160 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:181 [inline]
skb_pp_cow_data+0xb47/0x13e0 net/core/skbuff.c:952
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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 3482 tgid 3482 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
vfree+0x25a/0x400 mm/vmalloc.c:3426
call_nexthop_notifier net/ipv4/nexthop.c:455 [inline]
nexthops_dump net/ipv4/nexthop.c:3916 [inline]
__unregister_nexthop_notifier+0x149/0x1f0 net/ipv4/nexthop.c:3948
unregister_nexthop_notifier+0x22/0x40 net/ipv4/nexthop.c:3958
nsim_fib_destroy+0x89/0x180 drivers/net/netdevsim/fib.c:1657
nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1665
nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
ops_undo_list+0x187/0x990 net/core/net_namespace.c:235
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/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: 21032 Comm: syz.0.3050 Tainted: G B 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:506
free_page_is_bad mm/page_alloc.c:939 [inline]
free_pages_prepare mm/page_alloc.c:1240 [inline]
__free_frozen_pages+0xe17/0xe70 mm/page_alloc.c:2706
bpf_xdp_shrink_data net/core/filter.c:4172 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4192
____bpf_xdp_adjust_tail net/core/filter.c:4217 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4210
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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: 0033:0x7f4f62d8d3df
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:00007f4f63b26000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4f62fb5fa0 RCX: 00007f4f62d8d3df
RDX: 0000000000011dc0 RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f4f62e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f62fb5fa0 R15: 00007fff7ba279e8
BUG: Bad page state in process syz.0.3050 pfn:604e7
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880604e7000 pfn:0x604e7
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216da000 0000000000000000
raw: ffff8880604e7000 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 21032, tgid 21030 (syz.0.3050), ts 1643918173110, free_ts 1643247783197
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
__alloc_pages_noprof mm/page_alloc.c:4993 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_pages_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:160 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:181 [inline]
skb_pp_cow_data+0xb47/0x13e0 net/core/skbuff.c:952
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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 3482 tgid 3482 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
vfree+0x25a/0x400 mm/vmalloc.c:3426
call_nexthop_notifier net/ipv4/nexthop.c:455 [inline]
nexthops_dump net/ipv4/nexthop.c:3916 [inline]
__unregister_nexthop_notifier+0x149/0x1f0 net/ipv4/nexthop.c:3948
unregister_nexthop_notifier+0x22/0x40 net/ipv4/nexthop.c:3958
nsim_fib_destroy+0x89/0x180 drivers/net/netdevsim/fib.c:1657
nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1665
nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
ops_undo_list+0x187/0x990 net/core/net_namespace.c:235
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/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: 21032 Comm: syz.0.3050 Tainted: G B 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:506
free_page_is_bad mm/page_alloc.c:939 [inline]
free_pages_prepare mm/page_alloc.c:1240 [inline]
__free_frozen_pages+0xe17/0xe70 mm/page_alloc.c:2706
bpf_xdp_shrink_data net/core/filter.c:4172 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4192
____bpf_xdp_adjust_tail net/core/filter.c:4217 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4210
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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: 0033:0x7f4f62d8d3df
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:00007f4f63b26000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4f62fb5fa0 RCX: 00007f4f62d8d3df
RDX: 0000000000011dc0 RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f4f62e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f62fb5fa0 R15: 00007fff7ba279e8
BUG: Bad page state in process syz.0.3050 pfn:2f013
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802f0133c0 pfn:0x2f013
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216da000 0000000000000000
raw: ffff88802f0133c0 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 21032, tgid 21030 (syz.0.3050), ts 1643918158830, free_ts 1643247800747
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
__alloc_pages_noprof mm/page_alloc.c:4993 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_pages_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:160 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:181 [inline]
skb_pp_cow_data+0xb47/0x13e0 net/core/skbuff.c:952
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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 3482 tgid 3482 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
vfree+0x25a/0x400 mm/vmalloc.c:3426
call_nexthop_notifier net/ipv4/nexthop.c:455 [inline]
nexthops_dump net/ipv4/nexthop.c:3916 [inline]
__unregister_nexthop_notifier+0x149/0x1f0 net/ipv4/nexthop.c:3948
unregister_nexthop_notifier+0x22/0x40 net/ipv4/nexthop.c:3958
nsim_fib_destroy+0x89/0x180 drivers/net/netdevsim/fib.c:1657
nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1665
nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
ops_undo_list+0x187/0x990 net/core/net_namespace.c:235
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/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: 21032 Comm: syz.0.3050 Tainted: G B 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:506
free_page_is_bad mm/page_alloc.c:939 [inline]
free_pages_prepare mm/page_alloc.c:1240 [inline]
__free_frozen_pages+0xe17/0xe70 mm/page_alloc.c:2706
bpf_xdp_shrink_data net/core/filter.c:4172 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4192
____bpf_xdp_adjust_tail net/core/filter.c:4217 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4210
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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: 0033:0x7f4f62d8d3df
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:00007f4f63b26000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4f62fb5fa0 RCX: 00007f4f62d8d3df
RDX: 0000000000011dc0 RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f4f62e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f62fb5fa0 R15: 00007fff7ba279e8
BUG: Bad page state in process syz.0.3050 pfn:61b1f
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x61b1f
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff8880216da000 0000000000000000
raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 21032, tgid 21030 (syz.0.3050), ts 1643918144670, free_ts 1643247822077
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
__alloc_pages_noprof mm/page_alloc.c:4993 [inline]
alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:4913
alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline]
__page_pool_alloc_pages_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:160 [inline]
page_pool_dev_alloc include/net/page_pool/helpers.h:181 [inline]
skb_pp_cow_data+0xb47/0x13e0 net/core/skbuff.c:952
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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 3482 tgid 3482 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
vfree+0x25a/0x400 mm/vmalloc.c:3426
call_nexthop_notifier net/ipv4/nexthop.c:455 [inline]
nexthops_dump net/ipv4/nexthop.c:3916 [inline]
__unregister_nexthop_notifier+0x149/0x1f0 net/ipv4/nexthop.c:3948
unregister_nexthop_notifier+0x22/0x40 net/ipv4/nexthop.c:3958
nsim_fib_destroy+0x89/0x180 drivers/net/netdevsim/fib.c:1657
nsim_dev_reload_destroy+0x2e3/0x490 drivers/net/netdevsim/dev.c:1665
nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:968
devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461
devlink_pernet_pre_exit+0x1d9/0x3d0 net/devlink/core.c:509
ops_pre_exit_list net/core/net_namespace.c:162 [inline]
ops_undo_list+0x187/0x990 net/core/net_namespace.c:235
cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/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: 21032 Comm: syz.0.3050 Tainted: G B 6.16.0-rc2-syzkaller-00082-gfb4d33ab452e #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
bad_page+0x180/0x1c0 mm/page_alloc.c:506
free_page_is_bad mm/page_alloc.c:939 [inline]
free_pages_prepare mm/page_alloc.c:1240 [inline]
__free_frozen_pages+0xe17/0xe70 mm/page_alloc.c:2706
bpf_xdp_shrink_data net/core/filter.c:4172 [inline]
bpf_xdp_frags_shrink_tail+0x3a5/0x750 net/core/filter.c:4192
____bpf_xdp_adjust_tail net/core/filter.c:4217 [inline]
bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4210
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+0x1823/0x4180 net/core/dev.c:5788
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
netif_receive_skb_internal net/core/dev.c:6176 [inline]
netif_receive_skb+0x1cb/0x790 net/core/dev.c:6235
tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
tun_get_user+0x298e/0x3ce0 drivers/net/tun.c:1938
tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1984
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: 0033:0x7f4f62d8d3df
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:00007f4f63b26000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4f62fb5fa0 RCX: 00007f4f62d8d3df
RDX: 0000000000011dc0 RSI: 0000200000000040 RDI: 00000000000000c8
RBP: 00007f4f62e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f62fb5fa0 R15: 00007fff7ba279e8