================================================================== BUG: KASAN: use-after-free in hlist_add_head_rcu include/linux/rculist.h:593 [inline] BUG: KASAN: use-after-free in nf_nat_setup_info+0x1bb1/0x28d0 net/netfilter/nf_nat_core.c:633 Write of size 8 at addr ffff88807f06c8d8 by task ksoftirqd/0/15 CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.1.114-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 hlist_add_head_rcu include/linux/rculist.h:593 [inline] nf_nat_setup_info+0x1bb1/0x28d0 net/netfilter/nf_nat_core.c:633 __nf_nat_alloc_null_binding net/netfilter/nf_nat_core.c:664 [inline] nf_nat_alloc_null_binding net/netfilter/nf_nat_core.c:670 [inline] nf_nat_inet_fn+0x9d1/0xce0 net/netfilter/nf_nat_core.c:759 nf_nat_ipv4_fn net/netfilter/nf_nat_proto.c:645 [inline] nf_nat_ipv4_local_in+0x227/0x5a0 net/netfilter/nf_nat_proto.c:708 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline] nf_hook_slow+0xae/0x1e0 net/netfilter/core.c:614 nf_hook include/linux/netfilter.h:257 [inline] NF_HOOK+0x29a/0x450 include/linux/netfilter.h:300 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302 __netif_receive_skb_one_core net/core/dev.c:5532 [inline] __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5646 process_backlog+0x381/0x760 net/core/dev.c:5974 __napi_poll+0xc7/0x470 net/core/dev.c:6541 napi_poll net/core/dev.c:6608 [inline] net_rx_action+0x70f/0xeb0 net/core/dev.c:6722 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 run_ksoftirqd+0xc6/0x120 kernel/softirq.c:938 smpboot_thread_fn+0x52c/0xa30 kernel/smpboot.c:164 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Allocated by task 15: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:557 [inline] kzalloc include/linux/slab.h:693 [inline] nf_ct_tmpl_alloc+0x7a/0x220 net/netfilter/nf_conntrack_core.c:550 nft_ct_set_zone_eval+0x3b9/0x5c0 net/netfilter/nft_ct.c:270 expr_call_ops_eval net/netfilter/nf_tables_core.c:214 [inline] nft_do_chain+0x4ee/0x1b70 net/netfilter/nf_tables_core.c:264 nft_do_chain_ipv4+0x1f7/0x310 net/netfilter/nft_chain_filter.c:23 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline] nf_hook_slow+0xae/0x1e0 net/netfilter/core.c:614 nf_hook include/linux/netfilter.h:257 [inline] NF_HOOK+0x29a/0x450 include/linux/netfilter.h:300 __netif_receive_skb_one_core net/core/dev.c:5532 [inline] __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5646 process_backlog+0x381/0x760 net/core/dev.c:5974 __napi_poll+0xc7/0x470 net/core/dev.c:6541 napi_poll net/core/dev.c:6608 [inline] net_rx_action+0x70f/0xeb0 net/core/dev.c:6722 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 run_ksoftirqd+0xc6/0x120 kernel/softirq.c:938 smpboot_thread_fn+0x52c/0xa30 kernel/smpboot.c:164 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Freed by task 15: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x25c/0x3c0 mm/slub.c:3674 nf_conntrack_destroy+0x121/0x2c0 net/netfilter/core.c:703 nf_conntrack_put include/linux/netfilter/nf_conntrack_common.h:37 [inline] skb_release_head_state+0x165/0x230 net/core/skbuff.c:846 skb_release_all net/core/skbuff.c:854 [inline] __kfree_skb net/core/skbuff.c:870 [inline] kfree_skb_reason+0x13d/0x390 net/core/skbuff.c:893 nf_hook_slow+0x173/0x1e0 net/netfilter/core.c:619 nf_hook include/linux/netfilter.h:257 [inline] NF_HOOK+0x29a/0x450 include/linux/netfilter.h:300 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302 __netif_receive_skb_one_core net/core/dev.c:5532 [inline] __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5646 process_backlog+0x381/0x760 net/core/dev.c:5974 __napi_poll+0xc7/0x470 net/core/dev.c:6541 napi_poll net/core/dev.c:6608 [inline] net_rx_action+0x70f/0xeb0 net/core/dev.c:6722 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 run_ksoftirqd+0xc6/0x120 kernel/softirq.c:938 smpboot_thread_fn+0x52c/0xa30 kernel/smpboot.c:164 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the object at ffff88807f06c800 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 216 bytes inside of 512-byte region [ffff88807f06c800, ffff88807f06ca00) The buggy address belongs to the physical page: page:ffffea0001fc1b00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88807f06c400 pfn:0x7f06c head:ffffea0001fc1b00 order:2 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea00009ea208 ffffea00016e6a08 ffff888017c41c80 raw: ffff88807f06c400 000000000010000d 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3591, tgid 3591 (modprobe), ts 22703681572, free_ts 22701882226 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517 prep_new_page mm/page_alloc.c:2524 [inline] get_page_from_freelist+0x322e/0x33b0 mm/page_alloc.c:4290 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5558 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x84/0x2d0 mm/slub.c:1992 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:935 [inline] __kmalloc+0xa1/0x230 mm/slab_common.c:949 kmalloc include/linux/slab.h:562 [inline] kzalloc include/linux/slab.h:693 [inline] tomoyo_init_log+0x1b37/0x2040 security/tomoyo/audit.c:275 tomoyo_supervisor+0x396/0x12d0 security/tomoyo/common.c:2088 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission+0x243/0x360 security/tomoyo/file.c:587 tomoyo_path_perm+0x478/0x710 security/tomoyo/file.c:838 security_inode_getattr+0xcf/0x120 security/security.c:1361 vfs_getattr+0x26/0x360 fs/stat.c:158 vfs_statx+0x194/0x4b0 fs/stat.c:233 vfs_fstatat fs/stat.c:267 [inline] __do_sys_newfstatat fs/stat.c:437 [inline] __se_sys_newfstatat fs/stat.c:431 [inline] __x64_sys_newfstatat+0x151/0x1e0 fs/stat.c:431 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1444 [inline] free_pcp_prepare mm/page_alloc.c:1494 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3369 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3464 __stack_depot_save+0x409/0x470 lib/stackdepot.c:506 kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x60/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737 kmem_cache_alloc_bulk+0x3a2/0x4d0 mm/slub.c:3854 mt_alloc_bulk lib/maple_tree.c:157 [inline] mas_alloc_nodes+0x3df/0x800 lib/maple_tree.c:1299 mas_node_count_gfp lib/maple_tree.c:1359 [inline] mas_preallocate+0x12d/0x350 lib/maple_tree.c:5804 vma_link+0x15b/0x300 mm/mmap.c:475 insert_vm_struct+0x30c/0x3e0 mm/mmap.c:3295 __install_special_mapping+0x193/0x2f0 mm/mmap.c:3543 map_vdso+0x15b/0x2e0 arch/x86/entry/vdso/vma.c:268 load_elf_binary+0x1e97/0x2720 fs/binfmt_elf.c:1288 search_binary_handler fs/exec.c:1744 [inline] exec_binprm fs/exec.c:1785 [inline] bprm_execve+0x96a/0x18a0 fs/exec.c:1854 kernel_execve+0x8e6/0xa10 fs/exec.c:2019 Memory state around the buggy address: ffff88807f06c780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807f06c800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88807f06c880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88807f06c900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88807f06c980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================