BUG: Bad page state in process syz.4.3921 pfn:7e8f8
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807e8f8000 pfn:0x7e8f8
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 0000000000000000
raw: ffff88807e8f8000 3fffffffffffffff 00000000ffffffff 0000000000000000
page dumped because: page_pool leak
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 17509, tgid 17508 (syz.4.3921), ts 851666439683, free_ts 851572976513
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
page_pool_alloc_netmems net/core/page_pool.c:593 [inline]
page_pool_alloc_frag_netmem+0x59c/0x940 net/core/page_pool.c:998
page_pool_alloc_netmem include/net/page_pool/helpers.h:131 [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+0xcea/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23 tgid 23 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
run_ksoftirqd+0xca/0x130 kernel/softirq.c:950
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Not tainted 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8
BUG: Bad page state in process syz.4.3921 pfn:2876b
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802876b000 pfn:0x2876b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 0000000000000000
raw: ffff88802876b000 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 17509, tgid 17508 (syz.4.3921), ts 851666421080, free_ts 851572994383
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
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+0xcc8/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23 tgid 23 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
run_ksoftirqd+0xca/0x130 kernel/softirq.c:950
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Tainted: G B 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8
BUG: Bad page state in process syz.4.3921 pfn:2f4c0
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802f4c0000 pfn:0x2f4c0
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 0000000000000000
raw: ffff88802f4c0000 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 17509, tgid 17508 (syz.4.3921), ts 851666408338, free_ts 851573013088
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
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+0xcc8/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23 tgid 23 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
run_ksoftirqd+0xca/0x130 kernel/softirq.c:950
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Tainted: G B 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8
BUG: Bad page state in process syz.4.3921 pfn:69e8d
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888069e8d000 pfn:0x69e8d
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 0000000000000000
raw: ffff888069e8d000 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 17509, tgid 17508 (syz.4.3921), ts 851666394839, free_ts 851588147622
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
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+0xcc8/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5198 tgid 5198 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Tainted: G B 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8
BUG: Bad page state in process syz.4.3921 pfn:5e592
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88805e592000 pfn:0x5e592
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 0000000000000000
raw: ffff88805e592000 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 17509, tgid 17508 (syz.4.3921), ts 851666381496, free_ts 851588173996
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
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+0xcc8/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5198 tgid 5198 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Tainted: G B 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8
BUG: Bad page state in process syz.4.3921 pfn:68aac
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888068aac000 pfn:0x68aac
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 0000000000000000
raw: ffff888068aac000 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 17509, tgid 17508 (syz.4.3921), ts 851666368461, free_ts 851588197781
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
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+0xcc8/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5198 tgid 5198 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Tainted: G B 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8
BUG: Bad page state in process syz.4.3921 pfn:7bc74
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807bc74000 pfn:0x7bc74
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 0000000000000000
raw: ffff88807bc74000 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 17509, tgid 17508 (syz.4.3921), ts 851666355064, free_ts 851588223750
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
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+0xcc8/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5198 tgid 5198 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Tainted: G B 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8
BUG: Bad page state in process syz.4.3921 pfn:33c91
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888033c91000 pfn:0x33c91
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 0000000000000000
raw: ffff888033c91000 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 17509, tgid 17508 (syz.4.3921), ts 851666341658, free_ts 851588247866
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
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+0xcc8/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5198 tgid 5198 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Tainted: G B 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8
BUG: Bad page state in process syz.4.3921 pfn:32da0
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888032da0000 pfn:0x32da0
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 0000000000000000
raw: ffff888032da0000 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 17509, tgid 17508 (syz.4.3921), ts 851666328524, free_ts 851588273375
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
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+0xcc8/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5198 tgid 5198 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Tainted: G B 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8
BUG: Bad page state in process syz.4.3921 pfn:3541e
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88803541e380 pfn:0x3541e
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 0000000000000000
raw: ffff88803541e380 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 17509, tgid 17508 (syz.4.3921), ts 851666315381, free_ts 851628715330
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
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+0xcc8/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23 tgid 23 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
pagetable_free include/linux/mm.h:2923 [inline]
pagetable_dtor_free include/linux/mm.h:3021 [inline]
__tlb_remove_table+0x33c/0x420 include/asm-generic/tlb.h:216
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x76/0xf0 mm/mmu_gather.c:282
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
run_ksoftirqd+0xca/0x130 kernel/softirq.c:950
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Tainted: G B 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8
BUG: Bad page state in process syz.4.3921 pfn:35449
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x35449
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 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 17509, tgid 17508 (syz.4.3921), ts 851666302258, free_ts 851628739050
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
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+0xcc8/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23 tgid 23 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
pagetable_free include/linux/mm.h:2923 [inline]
pagetable_dtor_free include/linux/mm.h:3021 [inline]
__tlb_remove_table+0x33c/0x420 include/asm-generic/tlb.h:216
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x76/0xf0 mm/mmu_gather.c:282
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
run_ksoftirqd+0xca/0x130 kernel/softirq.c:950
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Tainted: G B 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8
BUG: Bad page state in process syz.4.3921 pfn:6956d
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6956d
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 dead000000000040 ffff888022aff000 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 17509, tgid 17508 (syz.4.3921), ts 851666288964, free_ts 851628760800
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4740
__alloc_pages_noprof mm/page_alloc.c:4774 [inline]
alloc_pages_bulk_noprof+0x847/0xae0 mm/page_alloc.c:4694
alloc_pages_bulk_node_noprof include/linux/gfp.h:235 [inline]
__page_pool_alloc_pages_slow+0x11f/0x690 net/core/page_pool.c:542
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+0xcc8/0x1720 net/core/skbuff.c:893
netif_skb_check_for_xdp net/core/dev.c:5259 [inline]
netif_receive_generic_xdp net/core/dev.c:5298 [inline]
do_xdp_generic+0x505/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 23 tgid 23 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe04/0x10e0 mm/page_alloc.c:2660
pagetable_free include/linux/mm.h:2923 [inline]
pagetable_dtor_free include/linux/mm.h:3021 [inline]
__tlb_remove_table+0x33c/0x420 include/asm-generic/tlb.h:216
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x76/0xf0 mm/mmu_gather.c:282
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
run_ksoftirqd+0xca/0x130 kernel/softirq.c:950
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Modules linked in:
CPU: 1 UID: 0 PID: 17509 Comm: syz.4.3921 Tainted: G B 6.14.0-syzkaller-00685-g3ba7dfb8da62 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
bad_page+0x176/0x1d0 mm/page_alloc.c:501
free_page_is_bad mm/page_alloc.c:923 [inline]
free_pages_prepare mm/page_alloc.c:1119 [inline]
free_frozen_pages+0x1079/0x10e0 mm/page_alloc.c:2660
bpf_xdp_shrink_data net/core/filter.c:4155 [inline]
bpf_xdp_frags_shrink_tail+0x3b3/0x780 net/core/filter.c:4175
____bpf_xdp_adjust_tail net/core/filter.c:4200 [inline]
bpf_xdp_adjust_tail+0x1c6/0x210 net/core/filter.c:4193
bpf_prog_f476d5219b92964a+0x1e/0x20
__bpf_prog_run include/linux/filter.h:701 [inline]
bpf_prog_run_xdp include/net/xdp.h:654 [inline]
bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:5191
netif_receive_generic_xdp net/core/dev.c:5304 [inline]
do_xdp_generic+0x757/0xd30 net/core/dev.c:5366
tun_get_user+0x2a4b/0x4860 drivers/net/tun.c:1929
tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0xacf/0xd10 fs/read_write.c:684
ksys_write+0x18f/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f507d78bc1f
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:00007f507e5a7000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f507d9a5fa0 RCX: 00007f507d78bc1f
RDX: 000000000000fdef RSI: 0000200000000a80 RDI: 00000000000000c8
RBP: 00007f507d80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f507d9a5fa0 R15: 00007ffda7d2a7e8