diff options
| author | Pavel Tikhomirov <ptikhomirov@virtuozzo.com> | 2024-07-25 07:12:16 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-02 06:25:50 +0300 |
| commit | e0b2fdb352b7991664b23ae5e15b537cd79a7820 (patch) | |
| tree | 6f7b55bdbff68cfbe97ed160a5ee6529e33a91cb /samples | |
| parent | 6c99d4eb7c5e0999349cdb9d824ea0ac450d0c8f (diff) | |
| download | linux-e0b2fdb352b7991664b23ae5e15b537cd79a7820.tar.xz | |
kmemleak-test: add percpu leak
Add a per-CPU memory leak, which will be reported like:
unreferenced object 0x3efa840195f8 (size 64):
comm "modprobe", pid 4667, jiffies 4294688677
hex dump (first 32 bytes on cpu 0):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace (crc 0):
[<ffffffffa7fa87af>] pcpu_alloc+0x3df/0x840
[<ffffffffc11642d9>] kmemleak_test_init+0x2c9/0x2f0 [kmemleak_test]
[<ffffffffa7c02264>] do_one_initcall+0x44/0x300
[<ffffffffa7de9e10>] do_init_module+0x60/0x240
[<ffffffffa7deb946>] init_module_from_file+0x86/0xc0
[<ffffffffa7deba99>] idempotent_init_module+0x109/0x2a0
[<ffffffffa7debd2a>] __x64_sys_finit_module+0x5a/0xb0
[<ffffffffa88f4f3a>] do_syscall_64+0x7a/0x160
[<ffffffffa8a0012b>] entry_SYSCALL_64_after_hwframe+0x76/0x7e
Link: https://lkml.kernel.org/r/20240725041223.872472-3-ptikhomirov@virtuozzo.com
Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Cc: Chen Jun <chenjun102@huawei.com>
Cc: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/kmemleak/kmemleak-test.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/samples/kmemleak/kmemleak-test.c b/samples/kmemleak/kmemleak-test.c index f7470ed85a79..544c36d51d56 100644 --- a/samples/kmemleak/kmemleak-test.c +++ b/samples/kmemleak/kmemleak-test.c @@ -79,6 +79,8 @@ static int kmemleak_test_init(void) per_cpu(kmemleak_test_pointer, i)); } + pr_info("__alloc_percpu(64, 4) = %p\n", __alloc_percpu(64, 4)); + return 0; } module_init(kmemleak_test_init); |