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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-06-04 16:47:17 -0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-06-10 08:43:32 -0400 |
| commit | b85fffec7f5ba1c43171c63c046a97bac30a4561 (patch) | |
| tree | 48e671ef1e7d171396ec689cedcef27140cd9d46 /arch/x86/xen/spinlock.c | |
| parent | ee336e10d5650d408efb66f634d462b9eb39c191 (diff) | |
| download | linux-stable-b85fffec7f5ba1c43171c63c046a97bac30a4561.tar.gz linux-stable-b85fffec7f5ba1c43171c63c046a97bac30a4561.tar.bz2 linux-stable-b85fffec7f5ba1c43171c63c046a97bac30a4561.zip | |
xen/smp: Don't leak interrupt name when offlining.
When the user does:
echo 0 > /sys/devices/system/cpu/cpu1/online
echo 1 > /sys/devices/system/cpu/cpu1/online
kmemleak reports:
kmemleak: 7 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
unreferenced object 0xffff88003fa51240 (size 32):
comm "swapper/0", pid 1, jiffies 4294667339 (age 1027.789s)
hex dump (first 32 bytes):
72 65 73 63 68 65 64 31 00 00 00 00 00 00 00 00 resched1........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff81660721>] kmemleak_alloc+0x21/0x50
[<ffffffff81190aac>] __kmalloc_track_caller+0xec/0x2a0
[<ffffffff812fe1bb>] kvasprintf+0x5b/0x90
[<ffffffff812fe228>] kasprintf+0x38/0x40
[<ffffffff81047ed1>] xen_smp_intr_init+0x41/0x2c0
[<ffffffff816636d3>] xen_cpu_up+0x393/0x3e8
[<ffffffff8166bbf5>] _cpu_up+0xd1/0x14b
[<ffffffff8166bd48>] cpu_up+0xd9/0xec
[<ffffffff81ae6e4a>] smp_init+0x4b/0xa3
[<ffffffff81ac4981>] kernel_init_freeable+0xdb/0x1e6
[<ffffffff8165ce39>] kernel_init+0x9/0xf0
[<ffffffff8167edfc>] ret_from_fork+0x7c/0xb0
[<ffffffffffffffff>] 0xffffffffffffffff
This patch fixes some of it by using the 'struct xen_common_irq->name'
field to stash away the char so that it can be freed when
the interrupt line is destroyed.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/xen/spinlock.c')
0 files changed, 0 insertions, 0 deletions