* memory leak in xdp_umem_create
@ 2020-10-23 14:26 syzbot
2020-10-24 16:22 ` Magnus Karlsson
0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2020-10-23 14:26 UTC (permalink / raw)
To: andrii, ast, bjorn.topel, bpf, daniel, davem, hawk,
john.fastabend, jonathan.lemon, kafai, kpsingh, kuba,
linux-kernel, magnus.karlsson, netdev, songliubraving,
syzkaller-bugs, yhs
Hello,
syzbot found the following issue on:
HEAD commit: f804b315 Merge tag 'linux-watchdog-5.10-rc1' of git://www...
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1797677f900000
kernel config: https://syzkaller.appspot.com/x/.config?x=504c0405f28172a
dashboard link: https://syzkaller.appspot.com/bug?extid=eb71df123dc2be2c1456
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10f27544500000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12fc4de8500000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+eb71df123dc2be2c1456@syzkaller.appspotmail.com
Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts.
executing program
executing program
BUG: memory leak
unreferenced object 0xffff888110c1e400 (size 96):
comm "syz-executor230", pid 8462, jiffies 4294942469 (age 13.280s)
hex dump (first 32 bytes):
00 50 e0 00 00 c9 ff ff 00 00 02 00 00 00 00 00 .P..............
00 00 00 00 00 10 00 00 20 00 00 00 20 00 00 00 ........ ... ...
backtrace:
[<00000000c4608c2b>] kmalloc include/linux/slab.h:554 [inline]
[<00000000c4608c2b>] kzalloc include/linux/slab.h:666 [inline]
[<00000000c4608c2b>] xdp_umem_create+0x33/0x630 net/xdp/xdp_umem.c:229
[<00000000551a05ed>] xsk_setsockopt+0x4ad/0x590 net/xdp/xsk.c:852
[<00000000f143ff32>] __sys_setsockopt+0x1b0/0x360 net/socket.c:2132
[<0000000076c65982>] __do_sys_setsockopt net/socket.c:2143 [inline]
[<0000000076c65982>] __se_sys_setsockopt net/socket.c:2140 [inline]
[<0000000076c65982>] __x64_sys_setsockopt+0x22/0x30 net/socket.c:2140
[<00000000d47a7174>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
[<00000000fb8e5852>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
BUG: memory leak
unreferenced object 0xffff88810e018f00 (size 256):
comm "syz-executor230", pid 8462, jiffies 4294942469 (age 13.280s)
hex dump (first 32 bytes):
00 00 4f 04 00 ea ff ff 40 00 4f 04 00 ea ff ff ..O.....@.O.....
80 00 4f 04 00 ea ff ff c0 00 4f 04 00 ea ff ff ..O.......O.....
backtrace:
[<00000000257d0c74>] kmalloc_array include/linux/slab.h:594 [inline]
[<00000000257d0c74>] kcalloc include/linux/slab.h:605 [inline]
[<00000000257d0c74>] xdp_umem_pin_pages net/xdp/xdp_umem.c:89 [inline]
[<00000000257d0c74>] xdp_umem_reg net/xdp/xdp_umem.c:207 [inline]
[<00000000257d0c74>] xdp_umem_create+0x3cc/0x630 net/xdp/xdp_umem.c:240
[<00000000551a05ed>] xsk_setsockopt+0x4ad/0x590 net/xdp/xsk.c:852
[<00000000f143ff32>] __sys_setsockopt+0x1b0/0x360 net/socket.c:2132
[<0000000076c65982>] __do_sys_setsockopt net/socket.c:2143 [inline]
[<0000000076c65982>] __se_sys_setsockopt net/socket.c:2140 [inline]
[<0000000076c65982>] __x64_sys_setsockopt+0x22/0x30 net/socket.c:2140
[<00000000d47a7174>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
[<00000000fb8e5852>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
---
This report 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@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: memory leak in xdp_umem_create
2020-10-23 14:26 memory leak in xdp_umem_create syzbot
@ 2020-10-24 16:22 ` Magnus Karlsson
0 siblings, 0 replies; 2+ messages in thread
From: Magnus Karlsson @ 2020-10-24 16:22 UTC (permalink / raw)
To: syzbot
Cc: andrii, Alexei Starovoitov, Björn Töpel, bpf,
Daniel Borkmann, David S. Miller, hawk, John Fastabend,
Jonathan Lemon, Martin KaFai Lau, kpsingh, Jakub Kicinski,
linux-kernel, Karlsson, Magnus, Network Development, Song Liu,
syzkaller-bugs, Yonghong Song
On Fri, Oct 23, 2020 at 6:24 PM syzbot
<syzbot+eb71df123dc2be2c1456@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: f804b315 Merge tag 'linux-watchdog-5.10-rc1' of git://www...
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=1797677f900000
> kernel config: https://syzkaller.appspot.com/x/.config?x=504c0405f28172a
> dashboard link: https://syzkaller.appspot.com/bug?extid=eb71df123dc2be2c1456
> compiler: gcc (GCC) 10.1.0-syz 20200507
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10f27544500000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12fc4de8500000
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+eb71df123dc2be2c1456@syzkaller.appspotmail.com
>
> Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts.
> executing program
> executing program
> BUG: memory leak
> unreferenced object 0xffff888110c1e400 (size 96):
> comm "syz-executor230", pid 8462, jiffies 4294942469 (age 13.280s)
> hex dump (first 32 bytes):
> 00 50 e0 00 00 c9 ff ff 00 00 02 00 00 00 00 00 .P..............
> 00 00 00 00 00 10 00 00 20 00 00 00 20 00 00 00 ........ ... ...
> backtrace:
> [<00000000c4608c2b>] kmalloc include/linux/slab.h:554 [inline]
> [<00000000c4608c2b>] kzalloc include/linux/slab.h:666 [inline]
> [<00000000c4608c2b>] xdp_umem_create+0x33/0x630 net/xdp/xdp_umem.c:229
> [<00000000551a05ed>] xsk_setsockopt+0x4ad/0x590 net/xdp/xsk.c:852
> [<00000000f143ff32>] __sys_setsockopt+0x1b0/0x360 net/socket.c:2132
> [<0000000076c65982>] __do_sys_setsockopt net/socket.c:2143 [inline]
> [<0000000076c65982>] __se_sys_setsockopt net/socket.c:2140 [inline]
> [<0000000076c65982>] __x64_sys_setsockopt+0x22/0x30 net/socket.c:2140
> [<00000000d47a7174>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
> [<00000000fb8e5852>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
> BUG: memory leak
> unreferenced object 0xffff88810e018f00 (size 256):
> comm "syz-executor230", pid 8462, jiffies 4294942469 (age 13.280s)
> hex dump (first 32 bytes):
> 00 00 4f 04 00 ea ff ff 40 00 4f 04 00 ea ff ff ..O.....@.O.....
> 80 00 4f 04 00 ea ff ff c0 00 4f 04 00 ea ff ff ..O.......O.....
> backtrace:
> [<00000000257d0c74>] kmalloc_array include/linux/slab.h:594 [inline]
> [<00000000257d0c74>] kcalloc include/linux/slab.h:605 [inline]
> [<00000000257d0c74>] xdp_umem_pin_pages net/xdp/xdp_umem.c:89 [inline]
> [<00000000257d0c74>] xdp_umem_reg net/xdp/xdp_umem.c:207 [inline]
> [<00000000257d0c74>] xdp_umem_create+0x3cc/0x630 net/xdp/xdp_umem.c:240
> [<00000000551a05ed>] xsk_setsockopt+0x4ad/0x590 net/xdp/xsk.c:852
> [<00000000f143ff32>] __sys_setsockopt+0x1b0/0x360 net/socket.c:2132
> [<0000000076c65982>] __do_sys_setsockopt net/socket.c:2143 [inline]
> [<0000000076c65982>] __se_sys_setsockopt net/socket.c:2140 [inline]
> [<0000000076c65982>] __x64_sys_setsockopt+0x22/0x30 net/socket.c:2140
> [<00000000d47a7174>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
> [<00000000fb8e5852>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
>
>
>
> ---
> This report 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@googlegroups.com.
>
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> syzbot can test patches for this issue, for details see:
> https://goo.gl/tpsmEJ#testing-patches
Thank you Mr Syzbot! I will take a look at this.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-10-23 14:26 memory leak in xdp_umem_create syzbot
2020-10-24 16:22 ` Magnus Karlsson
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