================================================================== BUG: KASAN: slab-out-of-bounds in copy_from_sockptr_offset include/linux/sockptr.h:49 [inline] BUG: KASAN: slab-out-of-bounds in do_replace net/ipv4/netfilter/ip_tables.c:1129 [inline] BUG: KASAN: slab-out-of-bounds in do_ipt_set_ctl+0xd57/0x1240 net/ipv4/netfilter/ip_tables.c:1631 Read of size 1088 at addr ffff88802a21e060 by task syz-executor.3/11768 CPU: 0 PID: 11768 Comm: syz-executor.3 Not tainted 6.9.0-rc2-next-20240405-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 copy_from_sockptr_offset include/linux/sockptr.h:49 [inline] do_replace net/ipv4/netfilter/ip_tables.c:1129 [inline] do_ipt_set_ctl+0xd57/0x1240 net/ipv4/netfilter/ip_tables.c:1631 nf_setsockopt+0x295/0x2c0 net/netfilter/nf_sockopt.c:101 do_sock_setsockopt+0x3af/0x720 net/socket.c:2311 __sys_setsockopt+0x1ae/0x250 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2340 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x72/0x7a RIP: 0033:0x7ffa7f47de69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffa802450c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007ffa7f5abf80 RCX: 00007ffa7f47de69 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007ffa7f4ca47a R08: 000000000000045c R09: 0000000000000000 R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ffa7f5abf80 R15: 00007ffc24083318 Allocated by task 11768: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4078 [inline] __kmalloc_noprof+0x200/0x400 mm/slub.c:4091 kmalloc_noprof include/linux/slab.h:664 [inline] kzalloc_noprof include/linux/slab.h:775 [inline] sockopt_alloc_buf kernel/bpf/cgroup.c:1776 [inline] __cgroup_bpf_run_filter_setsockopt+0x2e9/0x1050 kernel/bpf/cgroup.c:1817 do_sock_setsockopt+0x6b4/0x720 net/socket.c:2293 __sys_setsockopt+0x1ae/0x250 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2340 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x72/0x7a The buggy address belongs to the object at ffff88802a21e000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 96 bytes inside of allocated 1116-byte region [ffff88802a21e000, ffff88802a21e45c) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2a218 head: order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff80000000040(head|node=0|zone=1|lastcpupid=0xfff) page_type: 0xffffefff(slab) raw: 00fff80000000040 ffff888015042000 ffffea0001f65400 dead000000000002 raw: 0000000000000000 0000000080080008 00000001ffffefff 0000000000000000 head: 00fff80000000040 ffff888015042000 ffffea0001f65400 dead000000000002 head: 0000000000000000 0000000080080008 00000001ffffefff 0000000000000000 head: 00fff80000000003 ffffea0000a88601 ffffea0000a88648 00000000ffffffff head: 0000000800000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid -1936297500 (swapper/0), ts 1, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1490 prep_new_page mm/page_alloc.c:1498 [inline] get_page_from_freelist+0x2e7e/0x2f40 mm/page_alloc.c:3454 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4712 __alloc_pages_node_noprof include/linux/gfp.h:244 [inline] alloc_pages_node_noprof include/linux/gfp.h:271 [inline] alloc_slab_page+0x5f/0x120 mm/slub.c:2259 allocate_slab+0x5a/0x2e0 mm/slub.c:2422 new_slab mm/slub.c:2475 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3624 __slab_alloc+0x58/0xa0 mm/slub.c:3714 __slab_alloc_node mm/slub.c:3767 [inline] slab_alloc_node mm/slub.c:3945 [inline] __do_kmalloc_node mm/slub.c:4077 [inline] __kmalloc_noprof+0x25e/0x400 mm/slub.c:4091 kmalloc_noprof include/linux/slab.h:664 [inline] sk_prot_alloc+0xe0/0x210 net/core/sock.c:2080 sk_alloc+0x38/0x370 net/core/sock.c:2133 __netlink_create+0x6c/0x280 net/netlink/af_netlink.c:647 __netlink_kernel_create+0x1d8/0x780 net/netlink/af_netlink.c:2030 netlink_kernel_create include/linux/netlink.h:62 [inline] xfrm_user_net_init+0xa2/0x150 net/xfrm/xfrm_user.c:3846 ops_init+0x352/0x610 net/core/net_namespace.c:136 __register_pernet_operations net/core/net_namespace.c:1243 [inline] register_pernet_operations+0x2cb/0x660 net/core/net_namespace.c:1312 register_pernet_subsys+0x28/0x40 net/core/net_namespace.c:1353 page_owner free stack trace missing Memory state around the buggy address: ffff88802a21e300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802a21e380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88802a21e400: 00 00 00 00 00 00 00 00 00 00 00 04 fc fc fc fc ^ ffff88802a21e480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88802a21e500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================