Re: [v3] powerpc: msi: mark bitmap with kmemleak_not_leak()
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2015-10-12 11:21:23
On Wed, 2015-16-09 at 19:26:14 UTC, Denis Kirjanov wrote:
During the MSI bitmap test on boot kmemleak spews the following trace:
unreferenced object 0xc00000016e86c900 (size 64):
comm "swapper/0", pid 1, jiffies 4294893173 (age 518.024s)
hex dump (first 32 bytes):
00 00 01 ff 7f ff 7f 37 00 00 00 00 00 00 00 00
.......7........
ff ff ff ff ff ff ff ff 01 ff ff ff ff
ff ff ff
................
backtrace:
[<c00000000003eebc>] .zalloc_maybe_bootmem+0x3c/0x380
[<c000000000042d6c>] .msi_bitmap_alloc+0x3c/0xb0
[<c000000000a9aff8>] .msi_bitmap_selftest+0x30/0x2b4
[<c0000000000090f4>] .do_one_initcall+0xd4/0x270
[<c000000000a8e250>] .kernel_init_freeable+0x1a0/0x280
[<c000000000009b5c>] .kernel_init+0x1c/0x120
[<c000000000007fbc>] .ret_from_kernel_thread+0x58/0x9c
Added a flag to msi_bitmap for tracking allocations
from slab and memblock so we can properly free/handle
memory in msi_bitmap_free().
Signed-off-by: Denis Kirjanov <redacted>Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/cb2d3883c6033831e2a93b39 cheers