> Hello, > > syzbot found the following issue on: > > HEAD commit: 7503345ac5f5 Merge tag 'block-6.13-20241207' of git://git... > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=1784c820580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=335e39020523e2ed > dashboard link: https://syzkaller.appspot.com/bug?extid=ff145014d6b0ce64a173 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=177a8b30580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17d80c0f980000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/21582041bcc6/disk-7503345a.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/3752facf1019/vmlinux-7503345a.xz > kernel image: https://storage.googleapis.com/syzbot-assets/3b1c3c4d3bd9/bzImage-7503345a.xz > > The issue was bisected to: > > commit e6d5dbdd20aa6a86974af51deb9414cd2e7794cb > Author: Lorenzo Bianconi > Date: Mon Feb 12 09:50:56 2024 +0000 > > xdp: add multi-buff support for xdp running in generic mode > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=129acb30580000 > final oops: https://syzkaller.appspot.com/x/report.txt?x=119acb30580000 > console output: https://syzkaller.appspot.com/x/log.txt?x=169acb30580000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+ff145014d6b0ce64a173@syzkaller.appspotmail.com > Fixes: e6d5dbdd20aa ("xdp: add multi-buff support for xdp running in generic mode") > > BUG: Bad page state in process syz-executor285 pfn:2d302 > page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2d302 > flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) > raw: 00fff00000000000 dead000000000040 ffff888022ab2000 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 5820, tgid 5820 (syz-executor285), ts 62999485029, free_ts 54592867285 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 > prep_new_page mm/page_alloc.c:1564 [inline] > get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 > alloc_pages_bulk_noprof+0x70b/0xcc0 mm/page_alloc.c:4699 > alloc_pages_bulk_array_node_noprof include/linux/gfp.h:239 [inline] > __page_pool_alloc_pages_slow+0x122/0x690 net/core/page_pool.c:538 > page_pool_alloc_netmem net/core/page_pool.c:590 [inline] > page_pool_alloc_pages+0xd0/0x1c0 net/core/page_pool.c:597 > page_pool_alloc include/net/page_pool/helpers.h:129 [inline] > page_pool_dev_alloc include/net/page_pool/helpers.h:167 [inline] > skb_pp_cow_data+0xc43/0x1640 net/core/skbuff.c:983 > netif_skb_check_for_xdp net/core/dev.c:5041 [inline] > netif_receive_generic_xdp net/core/dev.c:5080 [inline] > do_xdp_generic+0x505/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > page last free pid 5807 tgid 5807 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1127 [inline] > free_unref_page+0xde3/0x1130 mm/page_alloc.c:2657 > __folio_put+0x2c7/0x440 mm/swap.c:112 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:484 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:565 > ksys_read+0x18f/0x2b0 fs/read_write.c:708 > 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 > Modules linked in: According to the stack trace above this seems an issue in the page_pool codebase since we are trying to get a new page from the page allocator (__page_pool_alloc_pages_slow()) but the new page we receive is already marked with PP_SIGNATURE in pp_magic field (bad reason is set to "page_pool leak" in page_bad_reason()) so it already belongs to the pool. @Jesper, Ilias: any input on it? Regards, Lorenzo > CPU: 0 UID: 0 PID: 5820 Comm: syz-executor285 Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > 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_unref_page+0x1048/0x1130 mm/page_alloc.c:2657 > bpf_xdp_shrink_data net/core/filter.c:4148 [inline] > bpf_xdp_frags_shrink_tail+0x3ee/0x7e0 net/core/filter.c:4169 > ____bpf_xdp_adjust_tail net/core/filter.c:4194 [inline] > bpf_xdp_adjust_tail+0x1c3/0x200 net/core/filter.c:4187 > bpf_prog_f476d5219b92964a+0x1e/0x20 > __bpf_prog_run include/linux/filter.h:701 [inline] > bpf_prog_run_xdp include/net/xdp.h:514 [inline] > bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:4973 > netif_receive_generic_xdp net/core/dev.c:5086 [inline] > do_xdp_generic+0x757/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > 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: 0033:0x7f941abf7db0 > Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 e2 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 > RSP: 002b:00007ffc09852f28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f941abf7db0 > RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8 > RBP: 0000000000000000 R08: 00007ffc09853058 R09: 00007ffc09853058 > R10: 00007ffc09853058 R11: 0000000000000202 R12: 00007f941ac460de > R13: 0000000000000000 R14: 00007ffc09852f60 R15: 00007ffc09852f50 > > BUG: Bad page state in process syz-executor285 pfn:2d301 > page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x8 pfn:0x2d301 > flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) > raw: 00fff00000000000 dead000000000040 ffff888022ab2000 0000000000000000 > raw: 0000000000000008 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 5820, tgid 5820 (syz-executor285), ts 62999478821, free_ts 55944947211 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 > prep_new_page mm/page_alloc.c:1564 [inline] > get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 > alloc_pages_bulk_noprof+0x70b/0xcc0 mm/page_alloc.c:4699 > alloc_pages_bulk_array_node_noprof include/linux/gfp.h:239 [inline] > __page_pool_alloc_pages_slow+0x122/0x690 net/core/page_pool.c:538 > page_pool_alloc_netmem net/core/page_pool.c:590 [inline] > page_pool_alloc_pages+0xd0/0x1c0 net/core/page_pool.c:597 > page_pool_alloc include/net/page_pool/helpers.h:129 [inline] > page_pool_dev_alloc include/net/page_pool/helpers.h:167 [inline] > skb_pp_cow_data+0xc43/0x1640 net/core/skbuff.c:983 > netif_skb_check_for_xdp net/core/dev.c:5041 [inline] > netif_receive_generic_xdp net/core/dev.c:5080 [inline] > do_xdp_generic+0x505/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > page last free pid 5810 tgid 5810 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1127 [inline] > free_unref_page+0xde3/0x1130 mm/page_alloc.c:2657 > __folio_put+0x2c7/0x440 mm/swap.c:112 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:484 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:565 > ksys_read+0x18f/0x2b0 fs/read_write.c:708 > 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 > Modules linked in: > CPU: 0 UID: 0 PID: 5820 Comm: syz-executor285 Tainted: G B 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 > Tainted: [B]=BAD_PAGE > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > 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_unref_page+0x1048/0x1130 mm/page_alloc.c:2657 > bpf_xdp_shrink_data net/core/filter.c:4148 [inline] > bpf_xdp_frags_shrink_tail+0x3ee/0x7e0 net/core/filter.c:4169 > ____bpf_xdp_adjust_tail net/core/filter.c:4194 [inline] > bpf_xdp_adjust_tail+0x1c3/0x200 net/core/filter.c:4187 > bpf_prog_f476d5219b92964a+0x1e/0x20 > __bpf_prog_run include/linux/filter.h:701 [inline] > bpf_prog_run_xdp include/net/xdp.h:514 [inline] > bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:4973 > netif_receive_generic_xdp net/core/dev.c:5086 [inline] > do_xdp_generic+0x757/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > 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: 0033:0x7f941abf7db0 > Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 e2 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 > RSP: 002b:00007ffc09852f28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f941abf7db0 > RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8 > RBP: 0000000000000000 R08: 00007ffc09853058 R09: 00007ffc09853058 > R10: 00007ffc09853058 R11: 0000000000000202 R12: 00007f941ac460de > R13: 0000000000000000 R14: 00007ffc09852f60 R15: 00007ffc09852f50 > > BUG: Bad page state in process syz-executor285 pfn:2d300 > page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802d304000 pfn:0x2d300 > flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) > raw: 00fff00000000000 dead000000000040 ffff888022ab2000 0000000000000000 > raw: ffff88802d304000 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 5820, tgid 5820 (syz-executor285), ts 62999472559, free_ts 55944400344 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 > prep_new_page mm/page_alloc.c:1564 [inline] > get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 > alloc_pages_bulk_noprof+0x70b/0xcc0 mm/page_alloc.c:4699 > alloc_pages_bulk_array_node_noprof include/linux/gfp.h:239 [inline] > __page_pool_alloc_pages_slow+0x122/0x690 net/core/page_pool.c:538 > page_pool_alloc_netmem net/core/page_pool.c:590 [inline] > page_pool_alloc_pages+0xd0/0x1c0 net/core/page_pool.c:597 > page_pool_alloc include/net/page_pool/helpers.h:129 [inline] > page_pool_dev_alloc include/net/page_pool/helpers.h:167 [inline] > skb_pp_cow_data+0xc43/0x1640 net/core/skbuff.c:983 > netif_skb_check_for_xdp net/core/dev.c:5041 [inline] > netif_receive_generic_xdp net/core/dev.c:5080 [inline] > do_xdp_generic+0x505/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > page last free pid 5810 tgid 5810 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1127 [inline] > free_unref_page+0xde3/0x1130 mm/page_alloc.c:2657 > __folio_put+0x2c7/0x440 mm/swap.c:112 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:484 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:565 > ksys_read+0x18f/0x2b0 fs/read_write.c:708 > 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 > Modules linked in: > CPU: 0 UID: 0 PID: 5820 Comm: syz-executor285 Tainted: G B 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 > Tainted: [B]=BAD_PAGE > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > 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_unref_page+0x1048/0x1130 mm/page_alloc.c:2657 > bpf_xdp_shrink_data net/core/filter.c:4148 [inline] > bpf_xdp_frags_shrink_tail+0x3ee/0x7e0 net/core/filter.c:4169 > ____bpf_xdp_adjust_tail net/core/filter.c:4194 [inline] > bpf_xdp_adjust_tail+0x1c3/0x200 net/core/filter.c:4187 > bpf_prog_f476d5219b92964a+0x1e/0x20 > __bpf_prog_run include/linux/filter.h:701 [inline] > bpf_prog_run_xdp include/net/xdp.h:514 [inline] > bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:4973 > netif_receive_generic_xdp net/core/dev.c:5086 [inline] > do_xdp_generic+0x757/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > 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: 0033:0x7f941abf7db0 > Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 e2 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 > RSP: 002b:00007ffc09852f28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f941abf7db0 > RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8 > RBP: 0000000000000000 R08: 00007ffc09853058 R09: 00007ffc09853058 > R10: 00007ffc09853058 R11: 0000000000000202 R12: 00007f941ac460de > R13: 0000000000000000 R14: 00007ffc09852f60 R15: 00007ffc09852f50 > > BUG: Bad page state in process syz-executor285 pfn:72d3b > page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x72d3b > flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) > raw: 00fff00000000000 dead000000000040 ffff888022ab2000 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 5820, tgid 5820 (syz-executor285), ts 62999466297, free_ts 54575113729 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 > prep_new_page mm/page_alloc.c:1564 [inline] > get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 > alloc_pages_bulk_noprof+0x70b/0xcc0 mm/page_alloc.c:4699 > alloc_pages_bulk_array_node_noprof include/linux/gfp.h:239 [inline] > __page_pool_alloc_pages_slow+0x122/0x690 net/core/page_pool.c:538 > page_pool_alloc_netmem net/core/page_pool.c:590 [inline] > page_pool_alloc_pages+0xd0/0x1c0 net/core/page_pool.c:597 > page_pool_alloc include/net/page_pool/helpers.h:129 [inline] > page_pool_dev_alloc include/net/page_pool/helpers.h:167 [inline] > skb_pp_cow_data+0xc43/0x1640 net/core/skbuff.c:983 > netif_skb_check_for_xdp net/core/dev.c:5041 [inline] > netif_receive_generic_xdp net/core/dev.c:5080 [inline] > do_xdp_generic+0x505/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > page last free pid 5807 tgid 5807 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1127 [inline] > free_unref_page+0xde3/0x1130 mm/page_alloc.c:2657 > __folio_put+0x2c7/0x440 mm/swap.c:112 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:484 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:565 > ksys_read+0x18f/0x2b0 fs/read_write.c:708 > 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 > Modules linked in: > CPU: 0 UID: 0 PID: 5820 Comm: syz-executor285 Tainted: G B 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 > Tainted: [B]=BAD_PAGE > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > 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_unref_page+0x1048/0x1130 mm/page_alloc.c:2657 > bpf_xdp_shrink_data net/core/filter.c:4148 [inline] > bpf_xdp_frags_shrink_tail+0x3ee/0x7e0 net/core/filter.c:4169 > ____bpf_xdp_adjust_tail net/core/filter.c:4194 [inline] > bpf_xdp_adjust_tail+0x1c3/0x200 net/core/filter.c:4187 > bpf_prog_f476d5219b92964a+0x1e/0x20 > __bpf_prog_run include/linux/filter.h:701 [inline] > bpf_prog_run_xdp include/net/xdp.h:514 [inline] > bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:4973 > netif_receive_generic_xdp net/core/dev.c:5086 [inline] > do_xdp_generic+0x757/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > 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: 0033:0x7f941abf7db0 > Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 e2 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 > RSP: 002b:00007ffc09852f28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f941abf7db0 > RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8 > RBP: 0000000000000000 R08: 00007ffc09853058 R09: 00007ffc09853058 > R10: 00007ffc09853058 R11: 0000000000000202 R12: 00007f941ac460de > R13: 0000000000000000 R14: 00007ffc09852f60 R15: 00007ffc09852f50 > > BUG: Bad page state in process syz-executor285 pfn:72d3a > page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x72d3a > flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) > raw: 00fff00000000000 dead000000000040 ffff888022ab2000 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 5820, tgid 5820 (syz-executor285), ts 62999460106, free_ts 54575122306 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 > prep_new_page mm/page_alloc.c:1564 [inline] > get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 > alloc_pages_bulk_noprof+0x70b/0xcc0 mm/page_alloc.c:4699 > alloc_pages_bulk_array_node_noprof include/linux/gfp.h:239 [inline] > __page_pool_alloc_pages_slow+0x122/0x690 net/core/page_pool.c:538 > page_pool_alloc_netmem net/core/page_pool.c:590 [inline] > page_pool_alloc_pages+0xd0/0x1c0 net/core/page_pool.c:597 > page_pool_alloc include/net/page_pool/helpers.h:129 [inline] > page_pool_dev_alloc include/net/page_pool/helpers.h:167 [inline] > skb_pp_cow_data+0xc43/0x1640 net/core/skbuff.c:983 > netif_skb_check_for_xdp net/core/dev.c:5041 [inline] > netif_receive_generic_xdp net/core/dev.c:5080 [inline] > do_xdp_generic+0x505/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > page last free pid 5807 tgid 5807 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1127 [inline] > free_unref_page+0xde3/0x1130 mm/page_alloc.c:2657 > __folio_put+0x2c7/0x440 mm/swap.c:112 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:484 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:565 > ksys_read+0x18f/0x2b0 fs/read_write.c:708 > 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 > Modules linked in: > CPU: 0 UID: 0 PID: 5820 Comm: syz-executor285 Tainted: G B 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 > Tainted: [B]=BAD_PAGE > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > 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_unref_page+0x1048/0x1130 mm/page_alloc.c:2657 > bpf_xdp_shrink_data net/core/filter.c:4148 [inline] > bpf_xdp_frags_shrink_tail+0x3ee/0x7e0 net/core/filter.c:4169 > ____bpf_xdp_adjust_tail net/core/filter.c:4194 [inline] > bpf_xdp_adjust_tail+0x1c3/0x200 net/core/filter.c:4187 > bpf_prog_f476d5219b92964a+0x1e/0x20 > __bpf_prog_run include/linux/filter.h:701 [inline] > bpf_prog_run_xdp include/net/xdp.h:514 [inline] > bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:4973 > netif_receive_generic_xdp net/core/dev.c:5086 [inline] > do_xdp_generic+0x757/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > 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: 0033:0x7f941abf7db0 > Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 e2 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 > RSP: 002b:00007ffc09852f28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f941abf7db0 > RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8 > RBP: 0000000000000000 R08: 00007ffc09853058 R09: 00007ffc09853058 > R10: 00007ffc09853058 R11: 0000000000000202 R12: 00007f941ac460de > R13: 0000000000000000 R14: 00007ffc09852f60 R15: 00007ffc09852f50 > > BUG: Bad page state in process syz-executor285 pfn:72d39 > page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x72d39 > flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) > raw: 00fff00000000000 dead000000000040 ffff888022ab2000 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 5820, tgid 5820 (syz-executor285), ts 62999453972, free_ts 54575963863 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 > prep_new_page mm/page_alloc.c:1564 [inline] > get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 > alloc_pages_bulk_noprof+0x70b/0xcc0 mm/page_alloc.c:4699 > alloc_pages_bulk_array_node_noprof include/linux/gfp.h:239 [inline] > __page_pool_alloc_pages_slow+0x122/0x690 net/core/page_pool.c:538 > page_pool_alloc_netmem net/core/page_pool.c:590 [inline] > page_pool_alloc_pages+0xd0/0x1c0 net/core/page_pool.c:597 > page_pool_alloc include/net/page_pool/helpers.h:129 [inline] > page_pool_dev_alloc include/net/page_pool/helpers.h:167 [inline] > skb_pp_cow_data+0xc43/0x1640 net/core/skbuff.c:983 > netif_skb_check_for_xdp net/core/dev.c:5041 [inline] > netif_receive_generic_xdp net/core/dev.c:5080 [inline] > do_xdp_generic+0x505/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > page last free pid 5807 tgid 5807 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1127 [inline] > free_unref_page+0xde3/0x1130 mm/page_alloc.c:2657 > __folio_put+0x2c7/0x440 mm/swap.c:112 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:484 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:565 > ksys_read+0x18f/0x2b0 fs/read_write.c:708 > 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 > Modules linked in: > CPU: 0 UID: 0 PID: 5820 Comm: syz-executor285 Tainted: G B 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 > Tainted: [B]=BAD_PAGE > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > 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_unref_page+0x1048/0x1130 mm/page_alloc.c:2657 > bpf_xdp_shrink_data net/core/filter.c:4148 [inline] > bpf_xdp_frags_shrink_tail+0x3ee/0x7e0 net/core/filter.c:4169 > ____bpf_xdp_adjust_tail net/core/filter.c:4194 [inline] > bpf_xdp_adjust_tail+0x1c3/0x200 net/core/filter.c:4187 > bpf_prog_f476d5219b92964a+0x1e/0x20 > __bpf_prog_run include/linux/filter.h:701 [inline] > bpf_prog_run_xdp include/net/xdp.h:514 [inline] > bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:4973 > netif_receive_generic_xdp net/core/dev.c:5086 [inline] > do_xdp_generic+0x757/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > 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: 0033:0x7f941abf7db0 > Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 e2 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 > RSP: 002b:00007ffc09852f28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f941abf7db0 > RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8 > RBP: 0000000000000000 R08: 00007ffc09853058 R09: 00007ffc09853058 > R10: 00007ffc09853058 R11: 0000000000000202 R12: 00007f941ac460de > R13: 0000000000000000 R14: 00007ffc09852f60 R15: 00007ffc09852f50 > > BUG: Bad page state in process syz-executor285 pfn:72d38 > page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x72d38 > flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) > raw: 00fff00000000000 dead000000000040 ffff888022ab2000 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 5820, tgid 5820 (syz-executor285), ts 62999447572, free_ts 54575218247 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 > prep_new_page mm/page_alloc.c:1564 [inline] > get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 > alloc_pages_bulk_noprof+0x70b/0xcc0 mm/page_alloc.c:4699 > alloc_pages_bulk_array_node_noprof include/linux/gfp.h:239 [inline] > __page_pool_alloc_pages_slow+0x122/0x690 net/core/page_pool.c:538 > page_pool_alloc_netmem net/core/page_pool.c:590 [inline] > page_pool_alloc_pages+0xd0/0x1c0 net/core/page_pool.c:597 > page_pool_alloc include/net/page_pool/helpers.h:129 [inline] > page_pool_dev_alloc include/net/page_pool/helpers.h:167 [inline] > skb_pp_cow_data+0xc43/0x1640 net/core/skbuff.c:983 > netif_skb_check_for_xdp net/core/dev.c:5041 [inline] > netif_receive_generic_xdp net/core/dev.c:5080 [inline] > do_xdp_generic+0x505/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > page last free pid 5807 tgid 5807 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1127 [inline] > free_unref_page+0xde3/0x1130 mm/page_alloc.c:2657 > __folio_put+0x2c7/0x440 mm/swap.c:112 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:484 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:565 > ksys_read+0x18f/0x2b0 fs/read_write.c:708 > 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 > Modules linked in: > CPU: 0 UID: 0 PID: 5820 Comm: syz-executor285 Tainted: G B 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 > Tainted: [B]=BAD_PAGE > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > 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_unref_page+0x1048/0x1130 mm/page_alloc.c:2657 > bpf_xdp_shrink_data net/core/filter.c:4148 [inline] > bpf_xdp_frags_shrink_tail+0x3ee/0x7e0 net/core/filter.c:4169 > ____bpf_xdp_adjust_tail net/core/filter.c:4194 [inline] > bpf_xdp_adjust_tail+0x1c3/0x200 net/core/filter.c:4187 > bpf_prog_f476d5219b92964a+0x1e/0x20 > __bpf_prog_run include/linux/filter.h:701 [inline] > bpf_prog_run_xdp include/net/xdp.h:514 [inline] > bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:4973 > netif_receive_generic_xdp net/core/dev.c:5086 [inline] > do_xdp_generic+0x757/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > 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: 0033:0x7f941abf7db0 > Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 e2 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 > RSP: 002b:00007ffc09852f28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f941abf7db0 > RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8 > RBP: 0000000000000000 R08: 00007ffc09853058 R09: 00007ffc09853058 > R10: 00007ffc09853058 R11: 0000000000000202 R12: 00007f941ac460de > R13: 0000000000000000 R14: 00007ffc09852f60 R15: 00007ffc09852f50 > > BUG: Bad page state in process syz-executor285 pfn:76907 > page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x76907 > flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) > raw: 00fff00000000000 dead000000000040 ffff888022ab2000 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 5820, tgid 5820 (syz-executor285), ts 62999441200, free_ts 54582364655 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 > prep_new_page mm/page_alloc.c:1564 [inline] > get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 > alloc_pages_bulk_noprof+0x70b/0xcc0 mm/page_alloc.c:4699 > alloc_pages_bulk_array_node_noprof include/linux/gfp.h:239 [inline] > __page_pool_alloc_pages_slow+0x122/0x690 net/core/page_pool.c:538 > page_pool_alloc_netmem net/core/page_pool.c:590 [inline] > page_pool_alloc_pages+0xd0/0x1c0 net/core/page_pool.c:597 > page_pool_alloc include/net/page_pool/helpers.h:129 [inline] > page_pool_dev_alloc include/net/page_pool/helpers.h:167 [inline] > skb_pp_cow_data+0xc43/0x1640 net/core/skbuff.c:983 > netif_skb_check_for_xdp net/core/dev.c:5041 [inline] > netif_receive_generic_xdp net/core/dev.c:5080 [inline] > do_xdp_generic+0x505/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > page last free pid 5807 tgid 5807 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1127 [inline] > free_unref_page+0xde3/0x1130 mm/page_alloc.c:2657 > __folio_put+0x2c7/0x440 mm/swap.c:112 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:484 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:565 > ksys_read+0x18f/0x2b0 fs/read_write.c:708 > 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 > Modules linked in: > CPU: 0 UID: 0 PID: 5820 Comm: syz-executor285 Tainted: G B 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 > Tainted: [B]=BAD_PAGE > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > 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_unref_page+0x1048/0x1130 mm/page_alloc.c:2657 > bpf_xdp_shrink_data net/core/filter.c:4148 [inline] > bpf_xdp_frags_shrink_tail+0x3ee/0x7e0 net/core/filter.c:4169 > ____bpf_xdp_adjust_tail net/core/filter.c:4194 [inline] > bpf_xdp_adjust_tail+0x1c3/0x200 net/core/filter.c:4187 > bpf_prog_f476d5219b92964a+0x1e/0x20 > __bpf_prog_run include/linux/filter.h:701 [inline] > bpf_prog_run_xdp include/net/xdp.h:514 [inline] > bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:4973 > netif_receive_generic_xdp net/core/dev.c:5086 [inline] > do_xdp_generic+0x757/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > 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: 0033:0x7f941abf7db0 > Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 e2 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 > RSP: 002b:00007ffc09852f28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f941abf7db0 > RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8 > RBP: 0000000000000000 R08: 00007ffc09853058 R09: 00007ffc09853058 > R10: 00007ffc09853058 R11: 0000000000000202 R12: 00007f941ac460de > R13: 0000000000000000 R14: 00007ffc09852f60 R15: 00007ffc09852f50 > > BUG: Bad page state in process syz-executor285 pfn:76906 > page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x76906 > flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) > raw: 00fff00000000000 dead000000000040 ffff888022ab2000 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 5820, tgid 5820 (syz-executor285), ts 62999421067, free_ts 54582851254 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 > prep_new_page mm/page_alloc.c:1564 [inline] > get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 > alloc_pages_bulk_noprof+0x70b/0xcc0 mm/page_alloc.c:4699 > alloc_pages_bulk_array_node_noprof include/linux/gfp.h:239 [inline] > __page_pool_alloc_pages_slow+0x122/0x690 net/core/page_pool.c:538 > page_pool_alloc_netmem net/core/page_pool.c:590 [inline] > page_pool_alloc_pages+0xd0/0x1c0 net/core/page_pool.c:597 > page_pool_alloc include/net/page_pool/helpers.h:129 [inline] > page_pool_dev_alloc include/net/page_pool/helpers.h:167 [inline] > skb_pp_cow_data+0xc43/0x1640 net/core/skbuff.c:983 > netif_skb_check_for_xdp net/core/dev.c:5041 [inline] > netif_receive_generic_xdp net/core/dev.c:5080 [inline] > do_xdp_generic+0x505/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > page last free pid 5807 tgid 5807 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1127 [inline] > free_unref_page+0xde3/0x1130 mm/page_alloc.c:2657 > __folio_put+0x2c7/0x440 mm/swap.c:112 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:484 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:565 > ksys_read+0x18f/0x2b0 fs/read_write.c:708 > 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 > Modules linked in: > CPU: 0 UID: 0 PID: 5820 Comm: syz-executor285 Tainted: G B 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 > Tainted: [B]=BAD_PAGE > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > 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_unref_page+0x1048/0x1130 mm/page_alloc.c:2657 > bpf_xdp_shrink_data net/core/filter.c:4148 [inline] > bpf_xdp_frags_shrink_tail+0x3ee/0x7e0 net/core/filter.c:4169 > ____bpf_xdp_adjust_tail net/core/filter.c:4194 [inline] > bpf_xdp_adjust_tail+0x1c3/0x200 net/core/filter.c:4187 > bpf_prog_f476d5219b92964a+0x1e/0x20 > __bpf_prog_run include/linux/filter.h:701 [inline] > bpf_prog_run_xdp include/net/xdp.h:514 [inline] > bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:4973 > netif_receive_generic_xdp net/core/dev.c:5086 [inline] > do_xdp_generic+0x757/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > 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: 0033:0x7f941abf7db0 > Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 e2 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 > RSP: 002b:00007ffc09852f28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f941abf7db0 > RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8 > RBP: 0000000000000000 R08: 00007ffc09853058 R09: 00007ffc09853058 > R10: 00007ffc09853058 R11: 0000000000000202 R12: 00007f941ac460de > R13: 0000000000000000 R14: 00007ffc09852f60 R15: 00007ffc09852f50 > > BUG: Bad page state in process syz-executor285 pfn:76905 > page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x76905 > flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) > raw: 00fff00000000000 dead000000000040 ffff888022ab2000 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 5820, tgid 5820 (syz-executor285), ts 62999414838, free_ts 54582871367 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 > prep_new_page mm/page_alloc.c:1564 [inline] > get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 > alloc_pages_bulk_noprof+0x70b/0xcc0 mm/page_alloc.c:4699 > alloc_pages_bulk_array_node_noprof include/linux/gfp.h:239 [inline] > __page_pool_alloc_pages_slow+0x122/0x690 net/core/page_pool.c:538 > page_pool_alloc_netmem net/core/page_pool.c:590 [inline] > page_pool_alloc_pages+0xd0/0x1c0 net/core/page_pool.c:597 > page_pool_alloc include/net/page_pool/helpers.h:129 [inline] > page_pool_dev_alloc include/net/page_pool/helpers.h:167 [inline] > skb_pp_cow_data+0xc43/0x1640 net/core/skbuff.c:983 > netif_skb_check_for_xdp net/core/dev.c:5041 [inline] > netif_receive_generic_xdp net/core/dev.c:5080 [inline] > do_xdp_generic+0x505/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > page last free pid 5807 tgid 5807 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1127 [inline] > free_unref_page+0xde3/0x1130 mm/page_alloc.c:2657 > __folio_put+0x2c7/0x440 mm/swap.c:112 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:484 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:565 > ksys_read+0x18f/0x2b0 fs/read_write.c:708 > 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 > Modules linked in: > CPU: 0 UID: 0 PID: 5820 Comm: syz-executor285 Tainted: G B 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 > Tainted: [B]=BAD_PAGE > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > 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_unref_page+0x1048/0x1130 mm/page_alloc.c:2657 > bpf_xdp_shrink_data net/core/filter.c:4148 [inline] > bpf_xdp_frags_shrink_tail+0x3ee/0x7e0 net/core/filter.c:4169 > ____bpf_xdp_adjust_tail net/core/filter.c:4194 [inline] > bpf_xdp_adjust_tail+0x1c3/0x200 net/core/filter.c:4187 > bpf_prog_f476d5219b92964a+0x1e/0x20 > __bpf_prog_run include/linux/filter.h:701 [inline] > bpf_prog_run_xdp include/net/xdp.h:514 [inline] > bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:4973 > netif_receive_generic_xdp net/core/dev.c:5086 [inline] > do_xdp_generic+0x757/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > 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: 0033:0x7f941abf7db0 > Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 e2 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 > RSP: 002b:00007ffc09852f28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f941abf7db0 > RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8 > RBP: 0000000000000000 R08: 00007ffc09853058 R09: 00007ffc09853058 > R10: 00007ffc09853058 R11: 0000000000000202 R12: 00007f941ac460de > R13: 0000000000000000 R14: 00007ffc09852f60 R15: 00007ffc09852f50 > > BUG: Bad page state in process syz-executor285 pfn:76904 > page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x76904 > flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) > raw: 00fff00000000000 dead000000000040 ffff888022ab2000 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 5820, tgid 5820 (syz-executor285), ts 62999408239, free_ts 54582895841 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 > prep_new_page mm/page_alloc.c:1564 [inline] > get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3474 > __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 > alloc_pages_bulk_noprof+0x70b/0xcc0 mm/page_alloc.c:4699 > alloc_pages_bulk_array_node_noprof include/linux/gfp.h:239 [inline] > __page_pool_alloc_pages_slow+0x122/0x690 net/core/page_pool.c:538 > page_pool_alloc_netmem net/core/page_pool.c:590 [inline] > page_pool_alloc_pages+0xd0/0x1c0 net/core/page_pool.c:597 > page_pool_alloc include/net/page_pool/helpers.h:129 [inline] > page_pool_dev_alloc include/net/page_pool/helpers.h:167 [inline] > skb_pp_cow_data+0xc43/0x1640 net/core/skbuff.c:983 > netif_skb_check_for_xdp net/core/dev.c:5041 [inline] > netif_receive_generic_xdp net/core/dev.c:5080 [inline] > do_xdp_generic+0x505/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > page last free pid 5807 tgid 5807 stack trace: > reset_page_owner include/linux/page_owner.h:25 [inline] > free_pages_prepare mm/page_alloc.c:1127 [inline] > free_unref_page+0xde3/0x1130 mm/page_alloc.c:2657 > __folio_put+0x2c7/0x440 mm/swap.c:112 > pipe_buf_release include/linux/pipe_fs_i.h:219 [inline] > pipe_update_tail fs/pipe.c:224 [inline] > pipe_read+0x6ed/0x13e0 fs/pipe.c:344 > new_sync_read fs/read_write.c:484 [inline] > vfs_read+0x991/0xb70 fs/read_write.c:565 > ksys_read+0x18f/0x2b0 fs/read_write.c:708 > 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 > Modules linked in: > CPU: 0 UID: 0 PID: 5820 Comm: syz-executor285 Tainted: G B 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 > Tainted: [B]=BAD_PAGE > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 > 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_unref_page+0x1048/0x1130 mm/page_alloc.c:2657 > bpf_xdp_shrink_data net/core/filter.c:4148 [inline] > bpf_xdp_frags_shrink_tail+0x3ee/0x7e0 net/core/filter.c:4169 > ____bpf_xdp_adjust_tail net/core/filter.c:4194 [inline] > bpf_xdp_adjust_tail+0x1c3/0x200 net/core/filter.c:4187 > bpf_prog_f476d5219b92964a+0x1e/0x20 > __bpf_prog_run include/linux/filter.h:701 [inline] > bpf_prog_run_xdp include/net/xdp.h:514 [inline] > bpf_prog_run_generic_xdp+0x686/0x1510 net/core/dev.c:4973 > netif_receive_generic_xdp net/core/dev.c:5086 [inline] > do_xdp_generic+0x757/0xd30 net/core/dev.c:5148 > __netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492 > __netif_receive_skb_one_core net/core/dev.c:5670 [inline] > __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 > netif_receive_skb_internal net/core/dev.c:5871 [inline] > netif_receive_skb+0x1e8/0x890 net/core/dev.c:5930 > tun_rx_batched+0x1b7/0x8f0 drivers/net/tun.c:1550 > tun_get_user+0x30d6/0x4890 drivers/net/tun.c:2007 > tun_chr_write_iter+0x10d/0x1f0 drivers/net/tun.c:2053 > new_sync_write fs/read_write.c:586 [inline] > vfs_write+0xaeb/0xd30 fs/read_write.c:679 > ksys_write+0x18f/0x2b0 fs/read_write.c:731 > 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: 0033:0x7f941abf7db0 > Code: 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 80 3d f1 e2 07 00 00 74 17 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 48 83 ec 28 48 89 > RSP: 002b:00007ffc09852f28 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f941abf7db0 > RDX: 0000000000011dc0 RSI: 00000000200004c0 RDI: 00000000000000c8 > RBP: 0000000000000000 R08: 00007ffc09853058 R09: 00007ffc09853058 > R10: 00007ffc09853058 R11: 0000000000000202 R12: 00007f941ac460de > R13: 0000000000000000 R14: 00007ffc09852f60 R15: 00007ffc09852f50 > > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want syzbot to run the reproducer, reply with: > #syz test: git://repo/address.git branch-or-commit-hash > If you attach or paste a git patch, syzbot will apply it before testing. > > If you want to overwrite report's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the report is a duplicate of another one, reply with: > #syz dup: exact-subject-of-another-report > > If you want to undo deduplication, reply with: > #syz undup