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Re: [PATCH] ppc: free 'fdt' after reset the machine
From: |
Greg Kurz |
Subject: |
Re: [PATCH] ppc: free 'fdt' after reset the machine |
Date: |
Fri, 14 Feb 2020 16:48:16 +0100 |
On Fri, 14 Feb 2020 11:32:06 +0800
<address@hidden> wrote:
> From: Pan Nengyuan <address@hidden>
>
> 'fdt' forgot to clean both e500 and pnv when we call 'system_reset' on ppc,
> this patch fix it. The leak stacks are as follow:
>
> Direct leak of 4194304 byte(s) in 4 object(s) allocated from:
> #0 0x7fafe37dd970 in __interceptor_calloc (/lib64/libasan.so.5+0xef970)
> #1 0x7fafe2e3149d in g_malloc0 (/lib64/libglib-2.0.so.0+0x5249d)
> #2 0x561876f7f80d in create_device_tree
> /mnt/sdb/qemu-new/qemu/device_tree.c:40
> #3 0x561876b7ac29 in ppce500_load_device_tree
> /mnt/sdb/qemu-new/qemu/hw/ppc/e500.c:364
> #4 0x561876b7f437 in ppce500_reset_device_tree
> /mnt/sdb/qemu-new/qemu/hw/ppc/e500.c:617
> #5 0x56187718b1ae in qemu_devices_reset
> /mnt/sdb/qemu-new/qemu/hw/core/reset.c:69
> #6 0x561876f6938d in qemu_system_reset /mnt/sdb/qemu-new/qemu/vl.c:1412
> #7 0x561876f6a25b in main_loop_should_exit
> /mnt/sdb/qemu-new/qemu/vl.c:1645
> #8 0x561876f6a398 in main_loop /mnt/sdb/qemu-new/qemu/vl.c:1679
> #9 0x561876f7da8e in main /mnt/sdb/qemu-new/qemu/vl.c:4438
> #10 0x7fafde16b812 in __libc_start_main ../csu/libc-start.c:308
> #11 0x5618765c055d in _start
> (/mnt/sdb/qemu-new/qemu/build/ppc64-softmmu/qemu-system-ppc64+0x2b1555d)
>
> Direct leak of 1048576 byte(s) in 1 object(s) allocated from:
> #0 0x7fc0a6f1b970 in __interceptor_calloc (/lib64/libasan.so.5+0xef970)
> #1 0x7fc0a656f49d in g_malloc0 (/lib64/libglib-2.0.so.0+0x5249d)
> #2 0x55eb05acd2ca in pnv_dt_create /mnt/sdb/qemu-new/qemu/hw/ppc/pnv.c:507
> #3 0x55eb05ace5bf in pnv_reset /mnt/sdb/qemu-new/qemu/hw/ppc/pnv.c:578
> #4 0x55eb05f2f395 in qemu_system_reset /mnt/sdb/qemu-new/qemu/vl.c:1410
> #5 0x55eb05f43850 in main /mnt/sdb/qemu-new/qemu/vl.c:4403
> #6 0x7fc0a18a9812 in __libc_start_main ../csu/libc-start.c:308
> #7 0x55eb0558655d in _start
> (/mnt/sdb/qemu-new/qemu/build/ppc64-softmmu/qemu-system-ppc64+0x2b1555d)
>
> Reported-by: Euler Robot <address@hidden>
The recipient list and 'git log' seem to agree on the fact that 'Euler Robot'
has its own email address, that is not yours ;-)
Reported-by: Euler Robot <address@hidden>
I guess David can fix this when applying the patch. No need to repost
unless explicitly asked to do so.
> Signed-off-by: Pan Nengyuan <address@hidden>
> ---
Reviewed-by: Greg Kurz <address@hidden>
> hw/ppc/e500.c | 1 +
> hw/ppc/pnv.c | 2 ++
> 2 files changed, 3 insertions(+)
>
> diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
> index 886442e54f..af537bba2b 100644
> --- a/hw/ppc/e500.c
> +++ b/hw/ppc/e500.c
> @@ -594,6 +594,7 @@ done:
> cpu_physical_memory_write(addr, fdt, fdt_size);
> }
> ret = fdt_size;
> + g_free(fdt);
>
> out:
> g_free(pci_map);
> diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
> index 139c857b1e..e98038b809 100644
> --- a/hw/ppc/pnv.c
> +++ b/hw/ppc/pnv.c
> @@ -582,6 +582,8 @@ static void pnv_reset(MachineState *machine)
>
> qemu_fdt_dumpdtb(fdt, fdt_totalsize(fdt));
> cpu_physical_memory_write(PNV_FDT_ADDR, fdt, fdt_totalsize(fdt));
> +
> + g_free(fdt);
> }
>
> static ISABus *pnv_chip_power8_isa_create(PnvChip *chip, Error **errp)