On Fri, Oct 23, 2020 at 6:24 PM syzbot <syzbot+eb71df123dc2be2c1456@xxxxxxxxxxxxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxxxxxxxxxxxx > > 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@xxxxxxxxxxxxxxxx. > > 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.
