BUG: memory leak
unreferenced object 0xffff88811c24e1c0 (size 32):
  comm "syz-executor801", pid 6897, jiffies 4294944383 (age 18.170s)
  hex dump (first 32 bytes):
    73 69 74 34 00 67 72 65 70 00 00 00 00 00 00 00  sit4.grep.......
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000016291163>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<0000000016291163>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<0000000016291163>] slab_alloc mm/slab.c:3319 [inline]
    [<0000000016291163>] __do_kmalloc mm/slab.c:3653 [inline]
    [<0000000016291163>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3670
    [<000000007d8333ba>] kstrdup+0x3a/0x70 mm/util.c:60
    [<00000000387c5017>] kstrdup_const+0x48/0x60 mm/util.c:82
    [<00000000a7e76f4a>] kvasprintf_const+0x7e/0xe0 lib/kasprintf.c:48
    [<000000005cd858c3>] kobject_set_name_vargs+0x40/0xe0 lib/kobject.c:289
    [<00000000642a0a72>] dev_set_name+0x63/0x90 drivers/base/core.c:2006
    [<00000000f4b37cee>] netdev_register_kobject+0x5a/0x1b0 net/core/net-sysfs.c:1727
    [<00000000fff4224c>] register_netdevice+0x397/0x610 net/core/dev.c:8781
    [<00000000a6288591>] ipip6_tunnel_create+0x7c/0xd0 net/ipv6/sit.c:208
    [<0000000031f17de3>] ipip6_newlink+0xb1/0x170 net/ipv6/sit.c:1589
    [<00000000327cfb74>] __rtnl_newlink+0x892/0xb30 net/core/rtnetlink.c:3196
    [<0000000008da991d>] rtnl_newlink+0x4e/0x80 net/core/rtnetlink.c:3254
    [<00000000219f8f0d>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5223
    [<0000000022e7befb>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477
    [<0000000034991cca>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5241
    [<000000000243cb16>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
    [<000000000243cb16>] netlink_unicast+0x1ec/0x2d0 net/netlink/af_netlink.c:1328

BUG: memory leak
unreferenced object 0xffff88811c24e1c0 (size 32):
  comm "syz-executor801", pid 6897, jiffies 4294944383 (age 19.200s)
  hex dump (first 32 bytes):
    73 69 74 34 00 67 72 65 70 00 00 00 00 00 00 00  sit4.grep.......
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000016291163>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<0000000016291163>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<0000000016291163>] slab_alloc mm/slab.c:3319 [inline]
    [<0000000016291163>] __do_kmalloc mm/slab.c:3653 [inline]
    [<0000000016291163>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3670
    [<000000007d8333ba>] kstrdup+0x3a/0x70 mm/util.c:60
    [<00000000387c5017>] kstrdup_const+0x48/0x60 mm/util.c:82
    [<00000000a7e76f4a>] kvasprintf_const+0x7e/0xe0 lib/kasprintf.c:48
    [<000000005cd858c3>] kobject_set_name_vargs+0x40/0xe0 lib/kobject.c:289
    [<00000000642a0a72>] dev_set_name+0x63/0x90 drivers/base/core.c:2006
    [<00000000f4b37cee>] netdev_register_kobject+0x5a/0x1b0 net/core/net-sysfs.c:1727
    [<00000000fff4224c>] register_netdevice+0x397/0x610 net/core/dev.c:8781
    [<00000000a6288591>] ipip6_tunnel_create+0x7c/0xd0 net/ipv6/sit.c:208
    [<0000000031f17de3>] ipip6_newlink+0xb1/0x170 net/ipv6/sit.c:1589
    [<00000000327cfb74>] __rtnl_newlink+0x892/0xb30 net/core/rtnetlink.c:3196
    [<0000000008da991d>] rtnl_newlink+0x4e/0x80 net/core/rtnetlink.c:3254
    [<00000000219f8f0d>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5223
    [<0000000022e7befb>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477
    [<0000000034991cca>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5241
    [<000000000243cb16>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
    [<000000000243cb16>] netlink_unicast+0x1ec/0x2d0 net/netlink/af_netlink.c:1328

BUG: memory leak
unreferenced object 0xffff88811c24e1c0 (size 32):
  comm "syz-executor801", pid 6897, jiffies 4294944383 (age 20.160s)
  hex dump (first 32 bytes):
    73 69 74 34 00 67 72 65 70 00 00 00 00 00 00 00  sit4.grep.......
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000016291163>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<0000000016291163>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<0000000016291163>] slab_alloc mm/slab.c:3319 [inline]
    [<0000000016291163>] __do_kmalloc mm/slab.c:3653 [inline]
    [<0000000016291163>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3670
    [<000000007d8333ba>] kstrdup+0x3a/0x70 mm/util.c:60
    [<00000000387c5017>] kstrdup_const+0x48/0x60 mm/util.c:82
    [<00000000a7e76f4a>] kvasprintf_const+0x7e/0xe0 lib/kasprintf.c:48
    [<000000005cd858c3>] kobject_set_name_vargs+0x40/0xe0 lib/kobject.c:289
    [<00000000642a0a72>] dev_set_name+0x63/0x90 drivers/base/core.c:2006
    [<00000000f4b37cee>] netdev_register_kobject+0x5a/0x1b0 net/core/net-sysfs.c:1727
    [<00000000fff4224c>] register_netdevice+0x397/0x610 net/core/dev.c:8781
    [<00000000a6288591>] ipip6_tunnel_create+0x7c/0xd0 net/ipv6/sit.c:208
    [<0000000031f17de3>] ipip6_newlink+0xb1/0x170 net/ipv6/sit.c:1589
    [<00000000327cfb74>] __rtnl_newlink+0x892/0xb30 net/core/rtnetlink.c:3196
    [<0000000008da991d>] rtnl_newlink+0x4e/0x80 net/core/rtnetlink.c:3254
    [<00000000219f8f0d>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5223
    [<0000000022e7befb>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477
    [<0000000034991cca>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5241
    [<000000000243cb16>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
    [<000000000243cb16>] netlink_unicast+0x1ec/0x2d0 net/netlink/af_netlink.c:1328

BUG: memory leak
unreferenced object 0xffff88811c24e1c0 (size 32):
  comm "syz-executor801", pid 6897, jiffies 4294944383 (age 21.120s)
  hex dump (first 32 bytes):
    73 69 74 34 00 67 72 65 70 00 00 00 00 00 00 00  sit4.grep.......
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000016291163>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<0000000016291163>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<0000000016291163>] slab_alloc mm/slab.c:3319 [inline]
    [<0000000016291163>] __do_kmalloc mm/slab.c:3653 [inline]
    [<0000000016291163>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3670
    [<000000007d8333ba>] kstrdup+0x3a/0x70 mm/util.c:60
    [<00000000387c5017>] kstrdup_const+0x48/0x60 mm/util.c:82
    [<00000000a7e76f4a>] kvasprintf_const+0x7e/0xe0 lib/kasprintf.c:48
    [<000000005cd858c3>] kobject_set_name_vargs+0x40/0xe0 lib/kobject.c:289
    [<00000000642a0a72>] dev_set_name+0x63/0x90 drivers/base/core.c:2006
    [<00000000f4b37cee>] netdev_register_kobject+0x5a/0x1b0 net/core/net-sysfs.c:1727
    [<00000000fff4224c>] register_netdevice+0x397/0x610 net/core/dev.c:8781
    [<00000000a6288591>] ipip6_tunnel_create+0x7c/0xd0 net/ipv6/sit.c:208
    [<0000000031f17de3>] ipip6_newlink+0xb1/0x170 net/ipv6/sit.c:1589
    [<00000000327cfb74>] __rtnl_newlink+0x892/0xb30 net/core/rtnetlink.c:3196
    [<0000000008da991d>] rtnl_newlink+0x4e/0x80 net/core/rtnetlink.c:3254
    [<00000000219f8f0d>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5223
    [<0000000022e7befb>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477
    [<0000000034991cca>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5241
    [<000000000243cb16>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
    [<000000000243cb16>] netlink_unicast+0x1ec/0x2d0 net/netlink/af_netlink.c:1328

BUG: memory leak
unreferenced object 0xffff88811c24e1c0 (size 32):
  comm "syz-executor801", pid 6897, jiffies 4294944383 (age 21.170s)
  hex dump (first 32 bytes):
    73 69 74 34 00 67 72 65 70 00 00 00 00 00 00 00  sit4.grep.......
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000016291163>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<0000000016291163>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<0000000016291163>] slab_alloc mm/slab.c:3319 [inline]
    [<0000000016291163>] __do_kmalloc mm/slab.c:3653 [inline]
    [<0000000016291163>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3670
    [<000000007d8333ba>] kstrdup+0x3a/0x70 mm/util.c:60
    [<00000000387c5017>] kstrdup_const+0x48/0x60 mm/util.c:82
    [<00000000a7e76f4a>] kvasprintf_const+0x7e/0xe0 lib/kasprintf.c:48
    [<000000005cd858c3>] kobject_set_name_vargs+0x40/0xe0 lib/kobject.c:289
    [<00000000642a0a72>] dev_set_name+0x63/0x90 drivers/base/core.c:2006
    [<00000000f4b37cee>] netdev_register_kobject+0x5a/0x1b0 net/core/net-sysfs.c:1727
    [<00000000fff4224c>] register_netdevice+0x397/0x610 net/core/dev.c:8781
    [<00000000a6288591>] ipip6_tunnel_create+0x7c/0xd0 net/ipv6/sit.c:208
    [<0000000031f17de3>] ipip6_newlink+0xb1/0x170 net/ipv6/sit.c:1589
    [<00000000327cfb74>] __rtnl_newlink+0x892/0xb30 net/core/rtnetlink.c:3196
    [<0000000008da991d>] rtnl_newlink+0x4e/0x80 net/core/rtnetlink.c:3254
    [<00000000219f8f0d>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5223
    [<0000000022e7befb>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477
    [<0000000034991cca>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5241
    [<000000000243cb16>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
    [<000000000243cb16>] netlink_unicast+0x1ec/0x2d0 net/netlink/af_netlink.c:1328

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executing program
executing program