Bug #7730
libzfs`add_config() leaks config nvl when reading spare/l2cache devices
Start date:
2017-01-05
Due date:
% Done:
100%
Estimated time:
Difficulty:
Bite-size
Tags:
Gerrit CR:
Description
antares:root:~# mdb /usr/sbin/zpool
> ::sysbp _exit
> ::run import
pool: data
id: 2093977168778024605
state: ONLINE
action: The pool can be imported using its name or numeric identifier.
config:
data ONLINE
c6t0d0 ONLINE
c6t1d0 ONLINE
cache
c6t2d0
mdb: stop on entry to _exit
mdb: target stopped at:
0xfee556ba: nop
mdb: You've got symbols!
Loading modules: [ ld.so.1 libumem.so.1 libc.so.1 libtopo.so.1 libavl.so.1 libnvpair.so.1 ]
> ::findleaks -d
BYTES LEAKED VMEM_SEG CALLER
4096 10 fda7b000 MMAP
8192 1 fea8d000 MMAP
8192 1 fe76d000 MMAP
8192 1 fe66e000 MMAP
4096 1 fe570000 MMAP
8192 1 fe470000 MMAP
4096 1 fe372000 MMAP
4096 1 fe273000 MMAP
8192 1 fe173000 MMAP
4096 1 fde77000 MMAP
------------------------------------------------------------------------
Total 10 oversized leaks, 61440 bytes
CACHE LEAKED BUFCTL CALLER
080cb590 1 080f6010 libnvpair.so.1`nv_alloc_sys+0x1b
080cb590 1 080f6088 libnvpair.so.1`nv_alloc_sys+0x1b
080cd590 3 082a33f8 libnvpair.so.1`nv_alloc_sys+0x1b
------------------------------------------------------------------------
Total 5 buffers, 208 bytes
mmap(2) leak: [fda7b000, fda7c000), 4096 bytes
mmap(2) leak: [fea8d000, fea8f000), 8192 bytes
mmap(2) leak: [fe76d000, fe76f000), 8192 bytes
mmap(2) leak: [fe66e000, fe670000), 8192 bytes
mmap(2) leak: [fe570000, fe571000), 4096 bytes
mmap(2) leak: [fe470000, fe472000), 8192 bytes
mmap(2) leak: [fe372000, fe373000), 4096 bytes
mmap(2) leak: [fe273000, fe274000), 4096 bytes
mmap(2) leak: [fe173000, fe175000), 8192 bytes
mmap(2) leak: [fde77000, fde78000), 4096 bytes
umem_alloc_32 leak: 1 buffer, 32 bytes
ADDR BUFADDR TIMESTAMP THREAD
CACHE LASTLOG CONTENTS
80f6010 80f2c38 5cc3c226dbb 9
80cb590 809b190 0
libumem.so.1`umem_cache_alloc_debug+0x1fe
libumem.so.1`umem_cache_alloc+0x18f
libumem.so.1`umem_alloc+0x50
libumem.so.1`umem_malloc+0x36
libnvpair.so.1`nv_alloc_sys+0x1b
libnvpair.so.1`nv_priv_alloc+0x13
libnvpair.so.1`nvlist_xalloc+0x1c
libnvpair.so.1`nvlist_xunpack+0x34
libnvpair.so.1`nvlist_unpack+0x29
libzfs.so.1`zpool_read_label+0x126
libzfs.so.1`zpool_open_func+0xe3
libc_hwcap2.so.1`tpool_worker+0x1b2
libc_hwcap2.so.1`_thrp_setup+0x88
libc_hwcap2.so.1`_lwp_start
umem_alloc_32 leak: 1 buffer, 32 bytes
ADDR BUFADDR TIMESTAMP THREAD
CACHE LASTLOG CONTENTS
80f6088 80f2c08 5cc3c2285df 9
80cb590 809b1f4 0
libumem.so.1`umem_cache_alloc_debug+0x1fe
libumem.so.1`umem_cache_alloc+0x18f
libumem.so.1`umem_alloc+0x50
libumem.so.1`umem_malloc+0x36
libnvpair.so.1`nv_alloc_sys+0x1b
libnvpair.so.1`nv_mem_zalloc+0x25
libnvpair.so.1`nvlist_xalloc+0x37
libnvpair.so.1`nvlist_xunpack+0x34
libnvpair.so.1`nvlist_unpack+0x29
libzfs.so.1`zpool_read_label+0x126
libzfs.so.1`zpool_open_func+0xe3
libc_hwcap2.so.1`tpool_worker+0x1b2
libc_hwcap2.so.1`_thrp_setup+0x88
libc_hwcap2.so.1`_lwp_start
umem_alloc_48 leak: 3 buffers, 48 bytes each, 144 bytes total
ADDR BUFADDR TIMESTAMP THREAD
CACHE LASTLOG CONTENTS
82a33f8 82a0f80 5cc3c22a29a 9
80cd590 809b258 0
libumem.so.1`umem_cache_alloc_debug+0x1fe
libumem.so.1`umem_cache_alloc+0x18f
libumem.so.1`umem_alloc+0x50
libumem.so.1`umem_malloc+0x36
libnvpair.so.1`nv_alloc_sys+0x1b
libnvpair.so.1`nv_mem_zalloc+0x25
libnvpair.so.1`nvp_buf_alloc+0x19
libnvpair.so.1`nvs_decode_pairs+0x3c
libnvpair.so.1`nvs_operation+0x5e
libnvpair.so.1`nvs_xdr+0x53
libnvpair.so.1`nvlist_common+0xc5
libnvpair.so.1`nvlist_xunpack+0x53
libnvpair.so.1`nvlist_unpack+0x29
libzfs.so.1`zpool_read_label+0x126
libzfs.so.1`zpool_open_func+0xe3
Related issues
Updated by Electric Monk about 4 years ago
- Status changed from In Progress to Closed
- % Done changed from 50 to 100
git commit 105686550ee9cbf5d033166a8a2a5a763667d436
commit 105686550ee9cbf5d033166a8a2a5a763667d436
Author: Yuri Pankov <yuri.pankov@nexenta.com>
Date: 2017-01-13T18:18:20.000Z
7730 libzfs`add_config() leaks config nvl when reading spare/l2cache devices
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Serapheim Dimitropoulos <serapheim@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Updated by Yuri Pankov almost 4 years ago
- Has duplicate Bug #6120: libzfs leaks a config nvlist for spares and l2arc added