On Mon, Apr 08, 2024 at 09:39:07AM +0300, Leon Romanovsky wrote: > On Mon, Apr 08, 2024 at 02:03:51PM +0800, Yi Zhang wrote: > > Hi > > I found the below kmemleak issue during blktests nvme/rdma on the > > latest linux-rdma/for-next, please help check it and let me know if > > you need any info/testing for it, thanks. > > > > # dmesg | grep kmemleak > > [ 67.130652] kmemleak: Kernel memory leak detector initialized (mem > > pool available: 36041) > > [ 67.130728] kmemleak: Automatic memory scanning thread started > > [ 1051.771867] kmemleak: 2 new suspected memory leaks (see > > /sys/kernel/debug/kmemleak) > > [ 1832.796189] kmemleak: 8 new suspected memory leaks (see > > /sys/kernel/debug/kmemleak) > > [ 2578.189075] kmemleak: 17 new suspected memory leaks (see > > /sys/kernel/debug/kmemleak) > > [ 3330.710984] kmemleak: 4 new suspected memory leaks (see > > /sys/kernel/debug/kmemleak) > > > > unreferenced object 0xffff88855da53400 (size 192): > > comm "rdma", pid 10630, jiffies 4296575922 > > hex dump (first 32 bytes): > > 37 00 00 00 00 00 00 00 c0 ff ff ff 1f 00 00 00 7............... > > 10 34 a5 5d 85 88 ff ff 10 34 a5 5d 85 88 ff ff .4.].....4.].... > > backtrace (crc 47f66721): > > [<ffffffff911251bd>] kmalloc_trace+0x30d/0x3b0 > > [<ffffffffc2640ff7>] alloc_gid_entry+0x47/0x380 [ib_core] > > [<ffffffffc2642206>] add_modify_gid+0x166/0x930 [ib_core] > > [<ffffffffc2643468>] ib_cache_update.part.0+0x6d8/0x910 [ib_core] > > [<ffffffffc2644e1a>] ib_cache_setup_one+0x24a/0x350 [ib_core] > > [<ffffffffc263949e>] ib_register_device+0x9e/0x3a0 [ib_core] > > [<ffffffffc2a3d389>] 0xffffffffc2a3d389 > > [<ffffffffc2688cd8>] nldev_newlink+0x2b8/0x520 [ib_core] > > My guess is that your test didn't call too nldev_dellink() and left > device registered. Sorry, I was wrong, it looks like GID entry leak. Thanks > > Thanks > > > [<ffffffffc2645fe3>] rdma_nl_rcv_msg+0x2c3/0x520 [ib_core] > > [<ffffffffc264648c>] > > rdma_nl_rcv_skb.constprop.0.isra.0+0x23c/0x3a0 [ib_core] > > [<ffffffff9270e7b5>] netlink_unicast+0x445/0x710 > > [<ffffffff9270f1f1>] netlink_sendmsg+0x761/0xc40 > > [<ffffffff9249db29>] __sys_sendto+0x3a9/0x420 > > [<ffffffff9249dc8c>] __x64_sys_sendto+0xdc/0x1b0 > > [<ffffffff92db0ad3>] do_syscall_64+0x93/0x180 > > [<ffffffff92e00126>] entry_SYSCALL_64_after_hwframe+0x71/0x79 > > > > -- > > Best Regards, > > Yi Zhang > > > > >
