==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
BUG: KASAN: use-after-free in atomic_dec_and_test include/asm-generic/atomic-instrumented.h:748 [inline]
BUG: KASAN: use-after-free in nf_conntrack_put include/linux/netfilter/nf_conntrack_common.h:33 [inline]
BUG: KASAN: use-after-free in nf_ct_put include/net/netfilter/nf_conntrack.h:176 [inline]
BUG: KASAN: use-after-free in nft_ct_tmpl_put_pcpu+0x135/0x1e0 net/netfilter/nft_ct.c:356
Write of size 4 at addr ffff888028719c00 by task syz-executor.1/25822

CPU: 1 PID: 25822 Comm: syz-executor.1 Not tainted 5.13.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:233
 __kasan_report mm/kasan/report.c:419 [inline]
 kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:436
 check_region_inline mm/kasan/generic.c:180 [inline]
 kasan_check_range+0x13d/0x180 mm/kasan/generic.c:186
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_dec_and_test include/asm-generic/atomic-instrumented.h:748 [inline]
 nf_conntrack_put include/linux/netfilter/nf_conntrack_common.h:33 [inline]
 nf_ct_put include/net/netfilter/nf_conntrack.h:176 [inline]
 nft_ct_tmpl_put_pcpu+0x135/0x1e0 net/netfilter/nft_ct.c:356
 __nft_ct_set_destroy net/netfilter/nft_ct.c:529 [inline]
 __nft_ct_set_destroy net/netfilter/nft_ct.c:518 [inline]
 nft_ct_set_init+0x41e/0x750 net/netfilter/nft_ct.c:614
 nf_tables_newexpr net/netfilter/nf_tables_api.c:2725 [inline]
 nft_expr_init+0x145/0x2d0 net/netfilter/nf_tables_api.c:2763
 nft_set_elem_expr_alloc+0x27/0x280 net/netfilter/nf_tables_api.c:5292
 nf_tables_newset+0x1b78/0x32a0 net/netfilter/nf_tables_api.c:4352
 nfnetlink_rcv_batch+0x1788/0x25c0 net/netfilter/nfnetlink.c:510
 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:631 [inline]
 nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:649
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433
 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline]
 __do_fast_syscall_32+0x67/0xe0 arch/x86/entry/common.c:143
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:168
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f18549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f55125fc EFLAGS: 00000296 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000200000c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

Allocated by task 25822:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:428 [inline]
 ____kasan_kmalloc mm/kasan/common.c:507 [inline]
 ____kasan_kmalloc mm/kasan/common.c:466 [inline]
 __kasan_kmalloc+0x9b/0xd0 mm/kasan/common.c:516
 kmalloc include/linux/slab.h:556 [inline]
 kzalloc include/linux/slab.h:686 [inline]
 nf_ct_tmpl_alloc+0x88/0x230 net/netfilter/nf_conntrack_core.c:565
 nft_ct_tmpl_alloc_pcpu net/netfilter/nft_ct.c:371 [inline]
 nft_ct_set_init+0x4d6/0x750 net/netfilter/nft_ct.c:567
 nf_tables_newexpr net/netfilter/nf_tables_api.c:2725 [inline]
 nft_expr_init+0x145/0x2d0 net/netfilter/nf_tables_api.c:2763
 nft_set_elem_expr_alloc+0x27/0x280 net/netfilter/nf_tables_api.c:5292
 nf_tables_newset+0x1b78/0x32a0 net/netfilter/nf_tables_api.c:4352
 nfnetlink_rcv_batch+0x1788/0x25c0 net/netfilter/nfnetlink.c:510
 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:631 [inline]
 nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:649
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433
 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline]
 __do_fast_syscall_32+0x67/0xe0 arch/x86/entry/common.c:143
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:168
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Freed by task 25821:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:357
 ____kasan_slab_free mm/kasan/common.c:360 [inline]
 ____kasan_slab_free mm/kasan/common.c:325 [inline]
 __kasan_slab_free+0xfb/0x130 mm/kasan/common.c:368
 kasan_slab_free include/linux/kasan.h:212 [inline]
 slab_free_hook mm/slub.c:1581 [inline]
 slab_free_freelist_hook+0xdf/0x240 mm/slub.c:1606
 slab_free mm/slub.c:3166 [inline]
 kfree+0xe5/0x7f0 mm/slub.c:4216
 nf_ct_tmpl_free net/netfilter/nf_conntrack_core.c:586 [inline]
 destroy_conntrack+0x225/0x2c0 net/netfilter/nf_conntrack_core.c:609
 nf_conntrack_destroy+0xdd/0x220 net/netfilter/core.c:677
 nf_conntrack_put include/linux/netfilter/nf_conntrack_common.h:34 [inline]
 nf_ct_put include/net/netfilter/nf_conntrack.h:176 [inline]
 nft_ct_tmpl_put_pcpu+0x15e/0x1e0 net/netfilter/nft_ct.c:356
 __nft_ct_set_destroy net/netfilter/nft_ct.c:529 [inline]
 __nft_ct_set_destroy net/netfilter/nft_ct.c:518 [inline]
 nft_ct_set_init+0x41e/0x750 net/netfilter/nft_ct.c:614
 nf_tables_newexpr net/netfilter/nf_tables_api.c:2725 [inline]
 nft_expr_init+0x145/0x2d0 net/netfilter/nf_tables_api.c:2763
 nft_set_elem_expr_alloc+0x27/0x280 net/netfilter/nf_tables_api.c:5292
 nf_tables_newset+0x1b78/0x32a0 net/netfilter/nf_tables_api.c:4352
 nfnetlink_rcv_batch+0x1788/0x25c0 net/netfilter/nfnetlink.c:510
 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:631 [inline]
 nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:649
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433
 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline]
 __do_fast_syscall_32+0x67/0xe0 arch/x86/entry/common.c:143
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:168
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Last potentially related work creation:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_record_aux_stack+0xe5/0x110 mm/kasan/generic.c:345
 __call_rcu kernel/rcu/tree.c:3038 [inline]
 call_rcu+0xb1/0x750 kernel/rcu/tree.c:3113
 put_ctx kernel/events/core.c:1272 [inline]
 put_ctx+0x116/0x1e0 kernel/events/core.c:1265
 perf_event_exit_task_context kernel/events/core.c:12661 [inline]
 perf_event_exit_task+0x527/0x740 kernel/events/core.c:12690
 do_exit+0xc0c/0x2a60 kernel/exit.c:835
 do_group_exit+0x125/0x310 kernel/exit.c:923
 get_signal+0x47f/0x2150 kernel/signal.c:2818
 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:789
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x171/0x280 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301
 __do_fast_syscall_32+0x74/0xe0 arch/x86/entry/common.c:146
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:168
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Second to last potentially related work creation:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_record_aux_stack+0xe5/0x110 mm/kasan/generic.c:345
 insert_work+0x48/0x370 kernel/workqueue.c:1331
 __queue_work+0x5c1/0xed0 kernel/workqueue.c:1497
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1431
 expire_timers kernel/time/timer.c:1471 [inline]
 __run_timers.part.0+0x4a6/0xa50 kernel/time/timer.c:1745
 __run_timers kernel/time/timer.c:1726 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1758
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559

The buggy address belongs to the object at ffff888028719c00
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 0 bytes inside of
 512-byte region [ffff888028719c00, ffff888028719e00)
The buggy address belongs to the page:
page:ffffea0000a1c600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x28718
head:ffffea0000a1c600 order:2 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888011041c80
raw: 0000000000000000 0000000080100010 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, ts 17340639738, free_ts 0
 prep_new_page mm/page_alloc.c:2358 [inline]
 get_page_from_freelist+0x1033/0x2b60 mm/page_alloc.c:3994
 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5200
 alloc_page_interleave+0x1e/0x1d0 mm/mempolicy.c:2147
 alloc_pages+0x238/0x2a0 mm/mempolicy.c:2270
 alloc_slab_page mm/slub.c:1644 [inline]
 allocate_slab+0x2c5/0x4c0 mm/slub.c:1784
 new_slab mm/slub.c:1847 [inline]
 new_slab_objects mm/slub.c:2593 [inline]
 ___slab_alloc+0x4a1/0x810 mm/slub.c:2756
 __slab_alloc.constprop.0+0xa7/0xf0 mm/slub.c:2796
 slab_alloc_node mm/slub.c:2878 [inline]
 __kmalloc_node_track_caller+0x2e6/0x350 mm/slub.c:4595
 kmalloc_reserve net/core/skbuff.c:354 [inline]
 __alloc_skb+0xde/0x340 net/core/skbuff.c:425
 alloc_skb include/linux/skbuff.h:1107 [inline]
 nlmsg_new include/net/netlink.h:953 [inline]
 mpls_netconf_notify_devconf+0x4a/0x110 net/mpls/af_mpls.c:1188
 mpls_dev_sysctl_register+0x1fe/0x2d0 net/mpls/af_mpls.c:1425
 mpls_add_dev net/mpls/af_mpls.c:1472 [inline]
 mpls_dev_notify+0x214/0x8b0 net/mpls/af_mpls.c:1588
 call_netdevice_notifier net/core/dev.c:1821 [inline]
 call_netdevice_register_notifiers net/core/dev.c:1829 [inline]
 call_netdevice_register_net_notifiers+0xdd/0x2b0 net/core/dev.c:1859
 register_netdevice_notifier+0xf5/0x260 net/core/dev.c:1910
 mpls_init+0x3a/0x13b net/mpls/af_mpls.c:2725
 do_one_initcall+0x103/0x650 init/main.c:1249
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888028719b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888028719b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888028719c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff888028719c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888028719d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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