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Message-ID: <YwkH9zTmLRvDHHbP@krava>
Date: Fri, 26 Aug 2022 19:50:47 +0200
From: Jiri Olsa <olsajiri@...il.com>
To: netdev@...r.kernel.org, bpf@...r.kernel.org,
Daniel Borkmann <daniel@...earbox.net>
Cc: Jakub Kicinski <kuba@...nel.org>,
Eric Dumazet <edumazet@...gle.com>
Subject: memory leaks after running bpf selftests
hi,
I'm getting memory leaks report after running test_progs,
on latest bpf-next/master, looks networking related
jirka
---
unreferenced object 0xffff888102b816c0 (size 232):
comm "(ostnamed)", pid 534, jiffies 4294672162 (age 704.879s)
hex dump (first 32 bytes):
18 17 3c 19 81 88 ff ff c0 0a b8 02 81 88 ff ff ..<.............
00 c0 a6 1c 81 88 ff ff 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff81c2c45e>] napi_skb_cache_get+0x4e/0x60
[<ffffffff81c2c532>] __alloc_skb+0x52/0x1c0
[<ffffffff81c2c6db>] __napi_alloc_skb+0x3b/0xe0
[<ffffffff81c8af09>] napi_get_frags+0x29/0x50
[<ffffffff81c4e3e5>] netif_napi_add_weight+0x135/0x280
[<ffffffff81cbc22a>] gro_cells_init+0x8a/0xe0
[<ffffffff81ed8960>] ip6_tnl_dev_init+0xe0/0x1b0
[<ffffffff81c567ea>] register_netdevice+0x19a/0x6b0
[<ffffffff81c56d1a>] register_netdev+0x1a/0x30
[<ffffffff81eda4b2>] ip6_tnl_init_net+0x1c2/0x440
[<ffffffff81c3b678>] ops_init+0x38/0x160
[<ffffffff81c3c1cf>] setup_net+0x17f/0x340
[<ffffffff81c3dd7c>] copy_net_ns+0x10c/0x270
[<ffffffff81181a67>] create_new_namespaces+0x117/0x300
[<ffffffff811820a5>] unshare_nsproxy_namespaces+0x55/0xb0
[<ffffffff8114e1bc>] ksys_unshare+0x19c/0x3b0
unreferenced object 0xffff888102b80ac0 (size 232):
comm "(ostnamed)", pid 534, jiffies 4294672162 (age 704.879s)
hex dump (first 32 bytes):
c0 16 b8 02 81 88 ff ff 40 00 b8 02 81 88 ff ff ........@.......
00 c0 a6 1c 81 88 ff ff 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff81c2c45e>] napi_skb_cache_get+0x4e/0x60
[<ffffffff81c2c532>] __alloc_skb+0x52/0x1c0
[<ffffffff81c2c6db>] __napi_alloc_skb+0x3b/0xe0
[<ffffffff81c8af09>] napi_get_frags+0x29/0x50
[<ffffffff81c4e3e5>] netif_napi_add_weight+0x135/0x280
[<ffffffff81cbc22a>] gro_cells_init+0x8a/0xe0
[<ffffffff81ed8960>] ip6_tnl_dev_init+0xe0/0x1b0
[<ffffffff81c567ea>] register_netdevice+0x19a/0x6b0
[<ffffffff81c56d1a>] register_netdev+0x1a/0x30
[<ffffffff81eda4b2>] ip6_tnl_init_net+0x1c2/0x440
[<ffffffff81c3b678>] ops_init+0x38/0x160
[<ffffffff81c3c1cf>] setup_net+0x17f/0x340
[<ffffffff81c3dd7c>] copy_net_ns+0x10c/0x270
[<ffffffff81181a67>] create_new_namespaces+0x117/0x300
[<ffffffff811820a5>] unshare_nsproxy_namespaces+0x55/0xb0
[<ffffffff8114e1bc>] ksys_unshare+0x19c/0x3b0
unreferenced object 0xffff888102b80040 (size 232):
comm "(ostnamed)", pid 534, jiffies 4294672162 (age 704.879s)
hex dump (first 32 bytes):
c0 0a b8 02 81 88 ff ff c0 0d b8 02 81 88 ff ff ................
00 c0 a6 1c 81 88 ff ff 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff81c2c45e>] napi_skb_cache_get+0x4e/0x60
[<ffffffff81c2c532>] __alloc_skb+0x52/0x1c0
[<ffffffff81c2c6db>] __napi_alloc_skb+0x3b/0xe0
[<ffffffff81c8af09>] napi_get_frags+0x29/0x50
[<ffffffff81c4e3e5>] netif_napi_add_weight+0x135/0x280
[<ffffffff81cbc22a>] gro_cells_init+0x8a/0xe0
[<ffffffff81ed8960>] ip6_tnl_dev_init+0xe0/0x1b0
[<ffffffff81c567ea>] register_netdevice+0x19a/0x6b0
[<ffffffff81c56d1a>] register_netdev+0x1a/0x30
[<ffffffff81eda4b2>] ip6_tnl_init_net+0x1c2/0x440
[<ffffffff81c3b678>] ops_init+0x38/0x160
[<ffffffff81c3c1cf>] setup_net+0x17f/0x340
[<ffffffff81c3dd7c>] copy_net_ns+0x10c/0x270
[<ffffffff81181a67>] create_new_namespaces+0x117/0x300
[<ffffffff811820a5>] unshare_nsproxy_namespaces+0x55/0xb0
[<ffffffff8114e1bc>] ksys_unshare+0x19c/0x3b0
unreferenced object 0xffff888102b80dc0 (size 232):
comm "(ostnamed)", pid 534, jiffies 4294672162 (age 704.893s)
hex dump (first 32 bytes):
40 00 b8 02 81 88 ff ff 18 17 3c 19 81 88 ff ff @.........<.....
00 c0 a6 1c 81 88 ff ff 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff81c2c45e>] napi_skb_cache_get+0x4e/0x60
[<ffffffff81c2c532>] __alloc_skb+0x52/0x1c0
[<ffffffff81c2c6db>] __napi_alloc_skb+0x3b/0xe0
[<ffffffff81c8af09>] napi_get_frags+0x29/0x50
[<ffffffff81c4e3e5>] netif_napi_add_weight+0x135/0x280
[<ffffffff81cbc22a>] gro_cells_init+0x8a/0xe0
[<ffffffff81ed8960>] ip6_tnl_dev_init+0xe0/0x1b0
[<ffffffff81c567ea>] register_netdevice+0x19a/0x6b0
[<ffffffff81c56d1a>] register_netdev+0x1a/0x30
[<ffffffff81eda4b2>] ip6_tnl_init_net+0x1c2/0x440
[<ffffffff81c3b678>] ops_init+0x38/0x160
[<ffffffff81c3c1cf>] setup_net+0x17f/0x340
[<ffffffff81c3dd7c>] copy_net_ns+0x10c/0x270
[<ffffffff81181a67>] create_new_namespaces+0x117/0x300
[<ffffffff811820a5>] unshare_nsproxy_namespaces+0x55/0xb0
[<ffffffff8114e1bc>] ksys_unshare+0x19c/0x3b0
unreferenced object 0xffff88812c3a3400 (size 1024):
comm "test_progs", pid 686, jiffies 4294713342 (age 663.722s)
hex dump (first 32 bytes):
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
backtrace:
[<ffffffff81c2c566>] __alloc_skb+0x86/0x1c0
[<ffffffff81c2c6db>] __napi_alloc_skb+0x3b/0xe0
[<ffffffff81c8af09>] napi_get_frags+0x29/0x50
[<ffffffff81a0a952>] tun_get_user+0x242/0x1250
[<ffffffff81a0c2c0>] tun_chr_write_iter+0x50/0x90
[<ffffffff81436faf>] do_iter_readv_writev+0xdf/0x140
[<ffffffff81438fc4>] do_iter_write+0x84/0x1d0
[<ffffffff81439205>] vfs_writev+0xc5/0x290
[<ffffffff8143944f>] do_writev+0x7f/0x160
[<ffffffff81fbd157>] do_syscall_64+0x37/0x90
[<ffffffff8200009b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
unreferenced object 0xffff88812c3a4000 (size 1024):
comm "test_progs", pid 686, jiffies 4294713342 (age 663.722s)
hex dump (first 32 bytes):
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
backtrace:
[<ffffffff81c2c566>] __alloc_skb+0x86/0x1c0
[<ffffffff81c2c6db>] __napi_alloc_skb+0x3b/0xe0
[<ffffffff81c8af09>] napi_get_frags+0x29/0x50
[<ffffffff81a0a952>] tun_get_user+0x242/0x1250
[<ffffffff81a0c2c0>] tun_chr_write_iter+0x50/0x90
[<ffffffff81436faf>] do_iter_readv_writev+0xdf/0x140
[<ffffffff81438fc4>] do_iter_write+0x84/0x1d0
[<ffffffff81439205>] vfs_writev+0xc5/0x290
[<ffffffff8143944f>] do_writev+0x7f/0x160
[<ffffffff81fbd157>] do_syscall_64+0x37/0x90
[<ffffffff8200009b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
unreferenced object 0xffff88812c3a1000 (size 1024):
comm "test_progs", pid 686, jiffies 4294713342 (age 663.722s)
hex dump (first 32 bytes):
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
backtrace:
[<ffffffff81c2c566>] __alloc_skb+0x86/0x1c0
[<ffffffff81c2c6db>] __napi_alloc_skb+0x3b/0xe0
[<ffffffff81c8af09>] napi_get_frags+0x29/0x50
[<ffffffff81a0a952>] tun_get_user+0x242/0x1250
[<ffffffff81a0c2c0>] tun_chr_write_iter+0x50/0x90
[<ffffffff81436faf>] do_iter_readv_writev+0xdf/0x140
[<ffffffff81438fc4>] do_iter_write+0x84/0x1d0
[<ffffffff81439205>] vfs_writev+0xc5/0x290
[<ffffffff8143944f>] do_writev+0x7f/0x160
[<ffffffff81fbd157>] do_syscall_64+0x37/0x90
[<ffffffff8200009b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
unreferenced object 0xffff88812c3a1c00 (size 1024):
comm "test_progs", pid 686, jiffies 4294713342 (age 663.741s)
hex dump (first 32 bytes):
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
backtrace:
[<ffffffff81c2c566>] __alloc_skb+0x86/0x1c0
[<ffffffff81c2c6db>] __napi_alloc_skb+0x3b/0xe0
[<ffffffff81c8af09>] napi_get_frags+0x29/0x50
[<ffffffff81a0a952>] tun_get_user+0x242/0x1250
[<ffffffff81a0c2c0>] tun_chr_write_iter+0x50/0x90
[<ffffffff81436faf>] do_iter_readv_writev+0xdf/0x140
[<ffffffff81438fc4>] do_iter_write+0x84/0x1d0
[<ffffffff81439205>] vfs_writev+0xc5/0x290
[<ffffffff8143944f>] do_writev+0x7f/0x160
[<ffffffff81fbd157>] do_syscall_64+0x37/0x90
[<ffffffff8200009b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
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