Re: memory leak in _sctp_make_chunk

From: Xin Long
Date: Tue Dec 17 2019 - 05:15:51 EST

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In reply to: syzbot: "memory leak in _sctp_make_chunk"
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On Tue, Dec 17, 2019 at 2:56 AM syzbot
<syzbot+107c4aff5f392bf1517f@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: 07c4b9e9 Merge tag 'scsi-fixes' of git://git.kernel.org/pu..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=13b03f96e00000
> kernel config: https://syzkaller.appspot.com/x/.config?x=bbf3a35184a3ed64
> dashboard link: https://syzkaller.appspot.com/bug?extid=107c4aff5f392bf1517f
> compiler: gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=144935a6e00000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=176c2361e00000
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+107c4aff5f392bf1517f@xxxxxxxxxxxxxxxxxxxxxxxxx
>
> BUG: memory leak
> unreferenced object 0xffff888111bd0700 (size 224):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 29.950s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 c0 4c 53 11 81 88 ff ff .........LS.....
> backtrace:
> [<00000000912cc8e3>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000912cc8e3>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000912cc8e3>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000912cc8e3>] kmem_cache_alloc_node+0x163/0x2f0 mm/slab.c:3575
> [<0000000010c4e31e>] __alloc_skb+0x6e/0x210 net/core/skbuff.c:197
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
It seems caused by cmd->obj.chunk set by SCTP_CMD_GEN_SHUTDOWN,
but it wasn't queued or freed due to the error returned by SCTP_CMD_GEN_SACK.

We can fix it by:

@@ -1770,11 +1775,17 @@ static int sctp_cmd_interpreter(enum
sctp_event_type event_type,
break;
}

- if (error)
+ if (error) {
+ cmd = sctp_next_cmd(commands);
+ while (cmd) {
+ if (cmd->verb == SCTP_CMD_REPLY)
+ sctp_chunk_free(cmd->obj.chunk);
+ cmd = sctp_next_cmd(commands);
+ }
break;
+ }

> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111eabc00 (size 512):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 29.950s)
> hex dump (first 32 bytes):
> 07 00 00 08 3c 2d 00 1e 2b 00 00 00 31 31 3a 30 ....<-..+...11:0
> 39 3a 32 36 23 20 70 72 6f 66 69 6c 65 3d 30 20 9:26# profile=0
> backtrace:
> [<00000000f3daff16>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000f3daff16>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000f3daff16>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000f3daff16>] kmem_cache_alloc_node_trace+0x161/0x2f0
> mm/slab.c:3593
> [<000000001eece319>] __do_kmalloc_node mm/slab.c:3615 [inline]
> [<000000001eece319>] __kmalloc_node_track_caller+0x38/0x50
> mm/slab.c:3630
> [<00000000c6ac598b>] __kmalloc_reserve.isra.0+0x40/0xb0
> net/core/skbuff.c:141
> [<00000000879c0222>] __alloc_skb+0xa0/0x210 net/core/skbuff.c:209
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
>
> BUG: memory leak
> unreferenced object 0xffff888111b9f700 (size 256):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 29.950s)
> hex dump (first 32 bytes):
> 00 f7 b9 11 81 88 ff ff 00 f7 b9 11 81 88 ff ff ................
> 01 00 00 00 00 00 00 00 18 f7 b9 11 81 88 ff ff ................
> backtrace:
> [<000000005dbe2b50>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<000000005dbe2b50>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<000000005dbe2b50>] slab_alloc mm/slab.c:3320 [inline]
> [<000000005dbe2b50>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
> [<000000001d5acae3>] kmem_cache_zalloc include/linux/slab.h:660 [inline]
> [<000000001d5acae3>] sctp_chunkify+0x2c/0xa0
> net/sctp/sm_make_chunk.c:1332
> [<00000000ada5bf03>] _sctp_make_chunk+0xb0/0x120
> net/sctp/sm_make_chunk.c:1405
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111bd0700 (size 224):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.020s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 c0 4c 53 11 81 88 ff ff .........LS.....
> backtrace:
> [<00000000912cc8e3>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000912cc8e3>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000912cc8e3>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000912cc8e3>] kmem_cache_alloc_node+0x163/0x2f0 mm/slab.c:3575
> [<0000000010c4e31e>] __alloc_skb+0x6e/0x210 net/core/skbuff.c:197
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111eabc00 (size 512):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.020s)
> hex dump (first 32 bytes):
> 07 00 00 08 3c 2d 00 1e 2b 00 00 00 31 31 3a 30 ....<-..+...11:0
> 39 3a 32 36 23 20 70 72 6f 66 69 6c 65 3d 30 20 9:26# profile=0
> backtrace:
> [<00000000f3daff16>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000f3daff16>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000f3daff16>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000f3daff16>] kmem_cache_alloc_node_trace+0x161/0x2f0
> mm/slab.c:3593
> [<000000001eece319>] __do_kmalloc_node mm/slab.c:3615 [inline]
> [<000000001eece319>] __kmalloc_node_track_caller+0x38/0x50
> mm/slab.c:3630
> [<00000000c6ac598b>] __kmalloc_reserve.isra.0+0x40/0xb0
> net/core/skbuff.c:141
> [<00000000879c0222>] __alloc_skb+0xa0/0x210 net/core/skbuff.c:209
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
>
> BUG: memory leak
> unreferenced object 0xffff888111b9f700 (size 256):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.020s)
> hex dump (first 32 bytes):
> 00 f7 b9 11 81 88 ff ff 00 f7 b9 11 81 88 ff ff ................
> 01 00 00 00 00 00 00 00 18 f7 b9 11 81 88 ff ff ................
> backtrace:
> [<000000005dbe2b50>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<000000005dbe2b50>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<000000005dbe2b50>] slab_alloc mm/slab.c:3320 [inline]
> [<000000005dbe2b50>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
> [<000000001d5acae3>] kmem_cache_zalloc include/linux/slab.h:660 [inline]
> [<000000001d5acae3>] sctp_chunkify+0x2c/0xa0
> net/sctp/sm_make_chunk.c:1332
> [<00000000ada5bf03>] _sctp_make_chunk+0xb0/0x120
> net/sctp/sm_make_chunk.c:1405
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111bd0700 (size 224):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.090s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 c0 4c 53 11 81 88 ff ff .........LS.....
> backtrace:
> [<00000000912cc8e3>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000912cc8e3>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000912cc8e3>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000912cc8e3>] kmem_cache_alloc_node+0x163/0x2f0 mm/slab.c:3575
> [<0000000010c4e31e>] __alloc_skb+0x6e/0x210 net/core/skbuff.c:197
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111eabc00 (size 512):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.090s)
> hex dump (first 32 bytes):
> 07 00 00 08 3c 2d 00 1e 2b 00 00 00 31 31 3a 30 ....<-..+...11:0
> 39 3a 32 36 23 20 70 72 6f 66 69 6c 65 3d 30 20 9:26# profile=0
> backtrace:
> [<00000000f3daff16>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000f3daff16>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000f3daff16>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000f3daff16>] kmem_cache_alloc_node_trace+0x161/0x2f0
> mm/slab.c:3593
> [<000000001eece319>] __do_kmalloc_node mm/slab.c:3615 [inline]
> [<000000001eece319>] __kmalloc_node_track_caller+0x38/0x50
> mm/slab.c:3630
> [<00000000c6ac598b>] __kmalloc_reserve.isra.0+0x40/0xb0
> net/core/skbuff.c:141
> [<00000000879c0222>] __alloc_skb+0xa0/0x210 net/core/skbuff.c:209
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
>
> BUG: memory leak
> unreferenced object 0xffff888111b9f700 (size 256):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.090s)
> hex dump (first 32 bytes):
> 00 f7 b9 11 81 88 ff ff 00 f7 b9 11 81 88 ff ff ................
> 01 00 00 00 00 00 00 00 18 f7 b9 11 81 88 ff ff ................
> backtrace:
> [<000000005dbe2b50>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<000000005dbe2b50>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<000000005dbe2b50>] slab_alloc mm/slab.c:3320 [inline]
> [<000000005dbe2b50>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
> [<000000001d5acae3>] kmem_cache_zalloc include/linux/slab.h:660 [inline]
> [<000000001d5acae3>] sctp_chunkify+0x2c/0xa0
> net/sctp/sm_make_chunk.c:1332
> [<00000000ada5bf03>] _sctp_make_chunk+0xb0/0x120
> net/sctp/sm_make_chunk.c:1405
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111bd0700 (size 224):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.160s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 c0 4c 53 11 81 88 ff ff .........LS.....
> backtrace:
> [<00000000912cc8e3>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000912cc8e3>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000912cc8e3>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000912cc8e3>] kmem_cache_alloc_node+0x163/0x2f0 mm/slab.c:3575
> [<0000000010c4e31e>] __alloc_skb+0x6e/0x210 net/core/skbuff.c:197
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111eabc00 (size 512):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.160s)
> hex dump (first 32 bytes):
> 07 00 00 08 3c 2d 00 1e 2b 00 00 00 31 31 3a 30 ....<-..+...11:0
> 39 3a 32 36 23 20 70 72 6f 66 69 6c 65 3d 30 20 9:26# profile=0
> backtrace:
> [<00000000f3daff16>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000f3daff16>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000f3daff16>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000f3daff16>] kmem_cache_alloc_node_trace+0x161/0x2f0
> mm/slab.c:3593
> [<000000001eece319>] __do_kmalloc_node mm/slab.c:3615 [inline]
> [<000000001eece319>] __kmalloc_node_track_caller+0x38/0x50
> mm/slab.c:3630
> [<00000000c6ac598b>] __kmalloc_reserve.isra.0+0x40/0xb0
> net/core/skbuff.c:141
> [<00000000879c0222>] __alloc_skb+0xa0/0x210 net/core/skbuff.c:209
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
>
> BUG: memory leak
> unreferenced object 0xffff888111b9f700 (size 256):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.160s)
> hex dump (first 32 bytes):
> 00 f7 b9 11 81 88 ff ff 00 f7 b9 11 81 88 ff ff ................
> 01 00 00 00 00 00 00 00 18 f7 b9 11 81 88 ff ff ................
> backtrace:
> [<000000005dbe2b50>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<000000005dbe2b50>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<000000005dbe2b50>] slab_alloc mm/slab.c:3320 [inline]
> [<000000005dbe2b50>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
> [<000000001d5acae3>] kmem_cache_zalloc include/linux/slab.h:660 [inline]
> [<000000001d5acae3>] sctp_chunkify+0x2c/0xa0
> net/sctp/sm_make_chunk.c:1332
> [<00000000ada5bf03>] _sctp_make_chunk+0xb0/0x120
> net/sctp/sm_make_chunk.c:1405
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111bd0700 (size 224):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.230s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 c0 4c 53 11 81 88 ff ff .........LS.....
> backtrace:
> [<00000000912cc8e3>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000912cc8e3>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000912cc8e3>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000912cc8e3>] kmem_cache_alloc_node+0x163/0x2f0 mm/slab.c:3575
> [<0000000010c4e31e>] __alloc_skb+0x6e/0x210 net/core/skbuff.c:197
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111eabc00 (size 512):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.230s)
> hex dump (first 32 bytes):
> 07 00 00 08 3c 2d 00 1e 2b 00 00 00 31 31 3a 30 ....<-..+...11:0
> 39 3a 32 36 23 20 70 72 6f 66 69 6c 65 3d 30 20 9:26# profile=0
> backtrace:
> [<00000000f3daff16>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000f3daff16>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000f3daff16>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000f3daff16>] kmem_cache_alloc_node_trace+0x161/0x2f0
> mm/slab.c:3593
> [<000000001eece319>] __do_kmalloc_node mm/slab.c:3615 [inline]
> [<000000001eece319>] __kmalloc_node_track_caller+0x38/0x50
> mm/slab.c:3630
> [<00000000c6ac598b>] __kmalloc_reserve.isra.0+0x40/0xb0
> net/core/skbuff.c:141
> [<00000000879c0222>] __alloc_skb+0xa0/0x210 net/core/skbuff.c:209
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
>
> BUG: memory leak
> unreferenced object 0xffff888111b9f700 (size 256):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.230s)
> hex dump (first 32 bytes):
> 00 f7 b9 11 81 88 ff ff 00 f7 b9 11 81 88 ff ff ................
> 01 00 00 00 00 00 00 00 18 f7 b9 11 81 88 ff ff ................
> backtrace:
> [<000000005dbe2b50>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<000000005dbe2b50>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<000000005dbe2b50>] slab_alloc mm/slab.c:3320 [inline]
> [<000000005dbe2b50>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
> [<000000001d5acae3>] kmem_cache_zalloc include/linux/slab.h:660 [inline]
> [<000000001d5acae3>] sctp_chunkify+0x2c/0xa0
> net/sctp/sm_make_chunk.c:1332
> [<00000000ada5bf03>] _sctp_make_chunk+0xb0/0x120
> net/sctp/sm_make_chunk.c:1405
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111bd0700 (size 224):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.300s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 c0 4c 53 11 81 88 ff ff .........LS.....
> backtrace:
> [<00000000912cc8e3>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000912cc8e3>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000912cc8e3>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000912cc8e3>] kmem_cache_alloc_node+0x163/0x2f0 mm/slab.c:3575
> [<0000000010c4e31e>] __alloc_skb+0x6e/0x210 net/core/skbuff.c:197
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111eabc00 (size 512):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.300s)
> hex dump (first 32 bytes):
> 07 00 00 08 3c 2d 00 1e 2b 00 00 00 31 31 3a 30 ....<-..+...11:0
> 39 3a 32 36 23 20 70 72 6f 66 69 6c 65 3d 30 20 9:26# profile=0
> backtrace:
> [<00000000f3daff16>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000f3daff16>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000f3daff16>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000f3daff16>] kmem_cache_alloc_node_trace+0x161/0x2f0
> mm/slab.c:3593
> [<000000001eece319>] __do_kmalloc_node mm/slab.c:3615 [inline]
> [<000000001eece319>] __kmalloc_node_track_caller+0x38/0x50
> mm/slab.c:3630
> [<00000000c6ac598b>] __kmalloc_reserve.isra.0+0x40/0xb0
> net/core/skbuff.c:141
> [<00000000879c0222>] __alloc_skb+0xa0/0x210 net/core/skbuff.c:209
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
>
> BUG: memory leak
> unreferenced object 0xffff888111b9f700 (size 256):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.300s)
> hex dump (first 32 bytes):
> 00 f7 b9 11 81 88 ff ff 00 f7 b9 11 81 88 ff ff ................
> 01 00 00 00 00 00 00 00 18 f7 b9 11 81 88 ff ff ................
> backtrace:
> [<000000005dbe2b50>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<000000005dbe2b50>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<000000005dbe2b50>] slab_alloc mm/slab.c:3320 [inline]
> [<000000005dbe2b50>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
> [<000000001d5acae3>] kmem_cache_zalloc include/linux/slab.h:660 [inline]
> [<000000001d5acae3>] sctp_chunkify+0x2c/0xa0
> net/sctp/sm_make_chunk.c:1332
> [<00000000ada5bf03>] _sctp_make_chunk+0xb0/0x120
> net/sctp/sm_make_chunk.c:1405
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111bd0700 (size 224):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.370s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 c0 4c 53 11 81 88 ff ff .........LS.....
> backtrace:
> [<00000000912cc8e3>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000912cc8e3>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000912cc8e3>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000912cc8e3>] kmem_cache_alloc_node+0x163/0x2f0 mm/slab.c:3575
> [<0000000010c4e31e>] __alloc_skb+0x6e/0x210 net/core/skbuff.c:197
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111eabc00 (size 512):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.370s)
> hex dump (first 32 bytes):
> 07 00 00 08 3c 2d 00 1e 2b 00 00 00 31 31 3a 30 ....<-..+...11:0
> 39 3a 32 36 23 20 70 72 6f 66 69 6c 65 3d 30 20 9:26# profile=0
> backtrace:
> [<00000000f3daff16>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000f3daff16>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000f3daff16>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000f3daff16>] kmem_cache_alloc_node_trace+0x161/0x2f0
> mm/slab.c:3593
> [<000000001eece319>] __do_kmalloc_node mm/slab.c:3615 [inline]
> [<000000001eece319>] __kmalloc_node_track_caller+0x38/0x50
> mm/slab.c:3630
> [<00000000c6ac598b>] __kmalloc_reserve.isra.0+0x40/0xb0
> net/core/skbuff.c:141
> [<00000000879c0222>] __alloc_skb+0xa0/0x210 net/core/skbuff.c:209
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
>
> BUG: memory leak
> unreferenced object 0xffff888111b9f700 (size 256):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.370s)
> hex dump (first 32 bytes):
> 00 f7 b9 11 81 88 ff ff 00 f7 b9 11 81 88 ff ff ................
> 01 00 00 00 00 00 00 00 18 f7 b9 11 81 88 ff ff ................
> backtrace:
> [<000000005dbe2b50>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<000000005dbe2b50>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<000000005dbe2b50>] slab_alloc mm/slab.c:3320 [inline]
> [<000000005dbe2b50>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
> [<000000001d5acae3>] kmem_cache_zalloc include/linux/slab.h:660 [inline]
> [<000000001d5acae3>] sctp_chunkify+0x2c/0xa0
> net/sctp/sm_make_chunk.c:1332
> [<00000000ada5bf03>] _sctp_make_chunk+0xb0/0x120
> net/sctp/sm_make_chunk.c:1405
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111bd0700 (size 224):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.440s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 c0 4c 53 11 81 88 ff ff .........LS.....
> backtrace:
> [<00000000912cc8e3>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000912cc8e3>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000912cc8e3>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000912cc8e3>] kmem_cache_alloc_node+0x163/0x2f0 mm/slab.c:3575
> [<0000000010c4e31e>] __alloc_skb+0x6e/0x210 net/core/skbuff.c:197
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff888111eabc00 (size 512):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.440s)
> hex dump (first 32 bytes):
> 07 00 00 08 3c 2d 00 1e 2b 00 00 00 31 31 3a 30 ....<-..+...11:0
> 39 3a 32 36 23 20 70 72 6f 66 69 6c 65 3d 30 20 9:26# profile=0
> backtrace:
> [<00000000f3daff16>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<00000000f3daff16>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<00000000f3daff16>] slab_alloc_node mm/slab.c:3263 [inline]
> [<00000000f3daff16>] kmem_cache_alloc_node_trace+0x161/0x2f0
> mm/slab.c:3593
> [<000000001eece319>] __do_kmalloc_node mm/slab.c:3615 [inline]
> [<000000001eece319>] __kmalloc_node_track_caller+0x38/0x50
> mm/slab.c:3630
> [<00000000c6ac598b>] __kmalloc_reserve.isra.0+0x40/0xb0
> net/core/skbuff.c:141
> [<00000000879c0222>] __alloc_skb+0xa0/0x210 net/core/skbuff.c:209
> [<00000000c69717ec>] alloc_skb include/linux/skbuff.h:1049 [inline]
> [<00000000c69717ec>] _sctp_make_chunk+0x51/0x120
> net/sctp/sm_make_chunk.c:1394
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
>
> BUG: memory leak
> unreferenced object 0xffff888111b9f700 (size 256):
> comm "syz-executor974", pid 7118, jiffies 4294954926 (age 30.440s)
> hex dump (first 32 bytes):
> 00 f7 b9 11 81 88 ff ff 00 f7 b9 11 81 88 ff ff ................
> 01 00 00 00 00 00 00 00 18 f7 b9 11 81 88 ff ff ................
> backtrace:
> [<000000005dbe2b50>] kmemleak_alloc_recursive
> include/linux/kmemleak.h:43 [inline]
> [<000000005dbe2b50>] slab_post_alloc_hook mm/slab.h:586 [inline]
> [<000000005dbe2b50>] slab_alloc mm/slab.c:3320 [inline]
> [<000000005dbe2b50>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
> [<000000001d5acae3>] kmem_cache_zalloc include/linux/slab.h:660 [inline]
> [<000000001d5acae3>] sctp_chunkify+0x2c/0xa0
> net/sctp/sm_make_chunk.c:1332
> [<00000000ada5bf03>] _sctp_make_chunk+0xb0/0x120
> net/sctp/sm_make_chunk.c:1405
> [<0000000098c40eef>] sctp_make_control net/sctp/sm_make_chunk.c:1441
> [inline]
> [<0000000098c40eef>] sctp_make_shutdown+0x4c/0xc0
> net/sctp/sm_make_chunk.c:864
> [<0000000019ed61c1>] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1435
> [inline]
> [<0000000019ed61c1>] sctp_side_effects net/sctp/sm_sideeffect.c:1189
> [inline]
> [<0000000019ed61c1>] sctp_do_sm+0xf4f/0x1da0
> net/sctp/sm_sideeffect.c:1160
> [<00000000c34b32c2>] sctp_assoc_bh_rcv+0x166/0x250
> net/sctp/associola.c:1045
> [<00000000fdcbee1b>] sctp_inq_push+0x7f/0xb0 net/sctp/inqueue.c:80
> [<000000002b119f75>] sctp_backlog_rcv+0x84/0x3d0 net/sctp/input.c:344
> [<00000000ad5696f2>] sk_backlog_rcv include/net/sock.h:949 [inline]
> [<00000000ad5696f2>] __release_sock+0xab/0x110 net/core/sock.c:2437
> [<00000000a7bc65ae>] release_sock+0x37/0xd0 net/core/sock.c:2953
> [<00000000c411aefa>] inet_shutdown+0xa8/0x150 net/ipv4/af_inet.c:898
> [<00000000b8775f62>] __sys_shutdown+0x68/0xb0 net/socket.c:2193
> [<000000003f1a0d0e>] __do_sys_shutdown net/socket.c:2201 [inline]
> [<000000003f1a0d0e>] __se_sys_shutdown net/socket.c:2199 [inline]
> [<000000003f1a0d0e>] __x64_sys_shutdown+0x1a/0x20 net/socket.c:2199
> [<000000007a408433>] do_syscall_64+0x73/0x220
> arch/x86/entry/common.c:294
> [<0000000017fd31b8>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
>
>
> ---
> This bug is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxxx
>
> syzbot will keep track of this bug report. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> syzbot can test patches for this bug, for details see:
> https://goo.gl/tpsmEJ#testing-patches

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