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BUG: KASAN: slab-use-after-free in lockdep_register_key+0x253/0x3f0 kernel/locking/lockdep.c:1225
Read of size 8 at addr ffff88802aec3298 by task syz-executor.1/5735

CPU: 1 PID: 5735 Comm: syz-executor.1 Not tainted 6.9.0-rc5-syzkaller-01459-gc2e6a872bde9 #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
 lockdep_register_key+0x253/0x3f0 kernel/locking/lockdep.c:1225
 htab_map_alloc+0x9b/0xe60 kernel/bpf/hashtab.c:506
 map_create+0x90c/0x1200 kernel/bpf/syscall.c:1333
 __sys_bpf+0x6d1/0x810 kernel/bpf/syscall.c:5659
 __do_sys_bpf kernel/bpf/syscall.c:5784 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5782 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5782
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f67ab87dea9
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:00007f67ab3ff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f67ab9abf80 RCX: 00007f67ab87dea9
RDX: 0000000000000048 RSI: 0000000020000140 RDI: 0100000000000000
RBP: 00007f67ab8ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f67ab9abf80 R15: 00007ffe62817df8
 </TASK>

Allocated by task 5580:
 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_node+0x253/0x4e0 mm/slub.c:3973
 kmalloc_node include/linux/slab.h:648 [inline]
 kzalloc_node include/linux/slab.h:760 [inline]
 qdisc_alloc+0x9c/0xa90 net/sched/sch_generic.c:941
 qdisc_create+0x182/0x1190 net/sched/sch_api.c:1299
 tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1776
 rtnetlink_rcv_msg+0x89b/0x10d0 net/core/rtnetlink.c:6594
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2564
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5580:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xa6/0xe0 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2106 [inline]
 slab_free mm/slub.c:4280 [inline]
 kfree+0x153/0x3a0 mm/slub.c:4390
 qdisc_create+0xf9e/0x1190 net/sched/sch_api.c:1393
 tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1776
 rtnetlink_rcv_msg+0x89b/0x10d0 net/core/rtnetlink.c:6594
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2564
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88802aec3000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 664 bytes inside of
 freed 1024-byte region [ffff88802aec3000, ffff88802aec3400)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2aec0
head: order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff80000000840(slab|head|node=0|zone=1|lastcpupid=0xfff)
page_type: 0xffffffff()
raw: 00fff80000000840 ffff888015041dc0 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
head: 00fff80000000840 ffff888015041dc0 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
head: 00fff80000000003 ffffea0000abb001 ffffea0000abb048 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 -538534872 (swapper/0), ts 1, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1534
 prep_new_page mm/page_alloc.c:1541 [inline]
 get_page_from_freelist+0x3410/0x35b0 mm/page_alloc.c:3317
 __alloc_pages+0x256/0x6c0 mm/page_alloc.c:4575
 __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]
 net_alloc_generic net/core/net_namespace.c:75 [inline]
 net_assign_generic net/core/net_namespace.c:95 [inline]
 ops_init+0x203/0x610 net/core/net_namespace.c:130
 __register_pernet_operations net/core/net_namespace.c:1244 [inline]
 register_pernet_operations+0x2cb/0x660 net/core/net_namespace.c:1313
 register_pernet_device+0x33/0x80 net/core/net_namespace.c:1400
 dp_init+0x95/0x160 net/openvswitch/datapath.c:2744
 do_one_initcall+0x248/0x880 init/main.c:1245
 do_initcall_level+0x157/0x210 init/main.c:1307
 do_initcalls+0x3f/0x80 init/main.c:1323
 kernel_init_freeable+0x435/0x5d0 init/main.c:1555
 kernel_init+0x1d/0x2b0 init/main.c:1444
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88802aec3180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802aec3200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88802aec3280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff88802aec3300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802aec3380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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