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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:1127 [inline]
BUG: KASAN: slab-out-of-bounds in do_ipt_set_ctl+0x1499/0x3dd0 net/ipv4/netfilter/ip_tables.c:1627
Read of size 712 at addr ffff88807d700060 by task syz-executor.2/7762

CPU: 0 PID: 7762 Comm: syz-executor.2 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __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:1127 [inline]
 do_ipt_set_ctl+0x1499/0x3dd0 net/ipv4/netfilter/ip_tables.c:1627
 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+0x6d/0x75
RIP: 0033:0x7fe9cd67de69
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:00007fe9ce3970c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fe9cd7abf80 RCX: 00007fe9cd67de69
RDX: 0000000000000040 RSI: 0004000000000000 RDI: 000000000000000a
RBP: 00007fe9cd6ca47a R08: 000000000000016d R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fe9cd7abf80 R15: 00007ffdea8ff498
 </TASK>

Allocated by task 7762:
 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:3966 [inline]
 __kmalloc+0x233/0x4a0 mm/slub.c:3979
 kmalloc include/linux/slab.h:632 [inline]
 kzalloc include/linux/slab.h:749 [inline]
 sockopt_alloc_buf kernel/bpf/cgroup.c:1776 [inline]
 __cgroup_bpf_run_filter_setsockopt+0x2e9/0x1040 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+0x6d/0x75

The buggy address belongs to the object at ffff88807d700000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 96 bytes inside of
 allocated 365-byte region [ffff88807d700000, ffff88807d70016d)

The buggy address belongs to the physical page:
page:ffffea0001f5c000 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88807d703400 pfn:0x7d700
head:ffffea0001f5c000 order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888014c41c80 ffffea0000a5a600 dead000000000002
raw: ffff88807d703400 000000008010000f 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 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 929, tgid 929 (kworker/0:3), ts 78742710714, free_ts 78685842584
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1533
 prep_new_page mm/page_alloc.c:1540 [inline]
 get_page_from_freelist+0x33ea/0x3580 mm/page_alloc.c:3311
 __alloc_pages+0x256/0x680 mm/page_alloc.c:4569
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page+0x5f/0x160 mm/slub.c:2175
 allocate_slab mm/slub.c:2338 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2391
 ___slab_alloc+0xc73/0x1260 mm/slub.c:3525
 __slab_alloc mm/slub.c:3610 [inline]
 __slab_alloc_node mm/slub.c:3663 [inline]
 slab_alloc_node mm/slub.c:3835 [inline]
 __do_kmalloc_node mm/slub.c:3965 [inline]
 __kmalloc+0x2e5/0x4a0 mm/slub.c:3979
 kmalloc include/linux/slab.h:632 [inline]
 kzalloc include/linux/slab.h:749 [inline]
 fib6_info_alloc+0x2e/0xf0 net/ipv6/ip6_fib.c:155
 ip6_route_info_create+0x445/0x12b0 net/ipv6/route.c:3759
 ip6_route_add+0x28/0x160 net/ipv6/route.c:3851
 addrconf_prefix_route net/ipv6/addrconf.c:2483 [inline]
 addrconf_add_linklocal+0x61a/0xa30 net/ipv6/addrconf.c:3314
 addrconf_addr_gen+0x510/0xbb0
 addrconf_dev_config net/ipv6/addrconf.c:3489 [inline]
 addrconf_init_auto_addrs+0x96a/0xeb0 net/ipv6/addrconf.c:3567
 addrconf_notify+0xaff/0x1020 net/ipv6/addrconf.c:3740
 notifier_call_chain+0x18f/0x3b0 kernel/notifier.c:93
 netdev_state_change+0x11f/0x1a0 net/core/dev.c:1332
page last free pid 5076 tgid 5076 stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1140 [inline]
 free_unref_page_prepare+0x95d/0xa80 mm/page_alloc.c:2346
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486
 discard_slab mm/slub.c:2437 [inline]
 __put_partials+0xeb/0x130 mm/slub.c:2906
 put_cpu_partial+0x17c/0x250 mm/slub.c:2981
 __slab_free+0x2ea/0x3d0 mm/slub.c:4151
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x5e/0xc0 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3798 [inline]
 slab_alloc_node mm/slub.c:3845 [inline]
 kmem_cache_alloc_node+0x194/0x380 mm/slub.c:3888
 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:658
 netlink_sendmsg+0x637/0xcb0 net/netlink/af_netlink.c:1880
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 __sys_sendto+0x3a4/0x4f0 net/socket.c:2191
 __do_sys_sendto net/socket.c:2203 [inline]
 __se_sys_sendto net/socket.c:2199 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2199
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

Memory state around the buggy address:
 ffff88807d700000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88807d700080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88807d700100: 00 00 00 00 00 00 00 00 00 00 00 00 00 05 fc fc
                                                          ^
 ffff88807d700180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88807d700200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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