| Message ID | 20200513134046.1089-1-cai@lca.pw (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | powerpc/xive: silence kmemleak false positives | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/merge (93369d50dc0f266ee67adcc6053c96700236d8be) |
| snowpatch_ozlabs/build-ppc64le | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64be | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64e | success | Build succeeded |
| snowpatch_ozlabs/build-pmac32 | success | Build succeeded |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 16 lines checked |
| snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c index 5218fdc4b29a..2d19f28967a6 100644 --- a/arch/powerpc/sysdev/xive/native.c +++ b/arch/powerpc/sysdev/xive/native.c @@ -18,6 +18,7 @@ #include <linux/delay.h> #include <linux/cpumask.h> #include <linux/mm.h> +#include <linux/kmemleak.h> #include <asm/machdep.h> #include <asm/prom.h> @@ -647,6 +648,9 @@ static bool xive_native_provision_pages(void) pr_err("Failed to allocate provisioning page\n"); return false; } + /* Kmemleak is unable to track the physical address. */ + kmemleak_ignore(p); + opal_xive_donate_page(chip, __pa(p)); } return true;
opal_xive_donate_page() will reference the newly allocated memory using __pa(). Since kmemleak is unable to track the physical memory resulting in false positives, silence those by using kmemleak_ignore(). unreferenced object 0xc000201b53e90000 (size 65536): comm "qemu-kvm", pid 124557, jiffies 4295650285 (age 364.370s) hex dump (first 32 bytes): 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: [<00000000acc2fb77>] xive_native_alloc_vp_block+0x168/0x210 xive_native_provision_pages at arch/powerpc/sysdev/xive/native.c:645 (inlined by) xive_native_alloc_vp_block at arch/powerpc/sysdev/xive/native.c:674 [<000000004d5c7964>] kvmppc_xive_compute_vp_id+0x20c/0x3b0 [kvm] [<0000000055317cd2>] kvmppc_xive_connect_vcpu+0xa4/0x4a0 [kvm] [<0000000093dfc014>] kvm_arch_vcpu_ioctl+0x388/0x508 [kvm] [<00000000d25aea0f>] kvm_vcpu_ioctl+0x15c/0x950 [kvm] [<0000000048155cd6>] ksys_ioctl+0xd8/0x130 [<0000000041ffeaa7>] sys_ioctl+0x28/0x40 [<000000004afc4310>] system_call_exception+0x114/0x1e0 [<00000000fb70a873>] system_call_common+0xf0/0x278 Signed-off-by: Qian Cai <cai@lca.pw> --- arch/powerpc/sysdev/xive/native.c | 4 ++++ 1 file changed, 4 insertions(+)