Hello, syzbot found the following issue on: HEAD commit: 7fca4dee Merge tag 'powerpc-5.9-2' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15ea92a1900000 kernel config: https://syzkaller.appspot.com/x/.config?x=e320bbff976a5cdc dashboard link: https://syzkaller.appspot.com/bug?extid=f7f6e564f4202d8601c6 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1286db9a900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1143ddf6900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f7f6e564f4202d8601c6@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: memory leak unreferenced object 0xffff88812b18e6e0 (size 32): comm "syz-executor286", pid 6490, jiffies 4294993450 (age 13.120s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 20 00 10 00 00 00 00 00 ........ ....... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000f286b99c>] kmalloc include/linux/slab.h:559 [inline] [<00000000f286b99c>] read_adv_mon_features+0xa1/0x150 net/bluetooth/mgmt.c:4180 [<00000000f0f16504>] hci_mgmt_cmd net/bluetooth/hci_sock.c:1603 [inline] [<00000000f0f16504>] hci_sock_sendmsg+0xb01/0xc60 net/bluetooth/hci_sock.c:1738 [<000000001560da71>] sock_sendmsg_nosec net/socket.c:651 [inline] [<000000001560da71>] sock_sendmsg+0x4c/0x60 net/socket.c:671 [<000000007d7be9f6>] sock_write_iter+0xc5/0x140 net/socket.c:998 [<00000000e3633d41>] call_write_iter include/linux/fs.h:1882 [inline] [<00000000e3633d41>] new_sync_write+0x173/0x210 fs/read_write.c:503 [<0000000021a87df2>] vfs_write+0x21d/0x280 fs/read_write.c:578 [<0000000003f07ff6>] ksys_write+0xd8/0x120 fs/read_write.c:631 [<0000000003a7df09>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<000000005ecd28f6>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88812b18e660 (size 32): comm "syz-executor286", pid 6495, jiffies 4294993998 (age 7.640s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 20 00 10 00 00 00 00 00 ........ ....... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000f286b99c>] kmalloc include/linux/slab.h:559 [inline] [<00000000f286b99c>] read_adv_mon_features+0xa1/0x150 net/bluetooth/mgmt.c:4180 [<00000000f0f16504>] hci_mgmt_cmd net/bluetooth/hci_sock.c:1603 [inline] [<00000000f0f16504>] hci_sock_sendmsg+0xb01/0xc60 net/bluetooth/hci_sock.c:1738 [<000000001560da71>] sock_sendmsg_nosec net/socket.c:651 [inline] [<000000001560da71>] sock_sendmsg+0x4c/0x60 net/socket.c:671 [<000000007d7be9f6>] sock_write_iter+0xc5/0x140 net/socket.c:998 [<00000000e3633d41>] call_write_iter include/linux/fs.h:1882 [inline] [<00000000e3633d41>] new_sync_write+0x173/0x210 fs/read_write.c:503 [<0000000021a87df2>] vfs_write+0x21d/0x280 fs/read_write.c:578 [<0000000003f07ff6>] ksys_write+0xd8/0x120 fs/read_write.c:631 [<0000000003a7df09>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<000000005ecd28f6>] 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
