tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 449dc8c97089a6e09fb2dac4d92b1b7ac0eb7c1e commit: 5f1f79bbc9e26fa9412fa9522f957bb8f030c442 virtio-mem: Paravirtualized memory hotplug date: 9 weeks ago config: x86_64-randconfig-m001-20200808 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> New smatch warnings: drivers/virtio/virtio_mem.c:1031 virtio_mem_mb_plug_any_sb() error: uninitialized symbol 'rc'. drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dce_calcs.c:1607 calculate_bandwidth() warn: Function too hairy. No more merges. Old smatch warnings: drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dce_calcs.c:3387 bw_calcs() warn: inconsistent indenting vim +/rc +1031 drivers/virtio/virtio_mem.c 978 979 /* 980 * Try to plug the desired number of subblocks of a memory block that 981 * is already added to Linux. 982 * 983 * Will modify the state of the memory block. 984 * 985 * Note: Can fail after some subblocks were successfully plugged. 986 */ 987 static int virtio_mem_mb_plug_any_sb(struct virtio_mem *vm, unsigned long mb_id, 988 uint64_t *nb_sb, bool online) 989 { 990 unsigned long pfn, nr_pages; 991 int sb_id, count; 992 int rc; 993 994 if (WARN_ON_ONCE(!*nb_sb)) 995 return -EINVAL; 996 997 while (*nb_sb) { 998 sb_id = virtio_mem_mb_first_unplugged_sb(vm, mb_id); 999 if (sb_id >= vm->nb_sb_per_mb) 1000 break; 1001 count = 1; 1002 while (count < *nb_sb && 1003 sb_id + count < vm->nb_sb_per_mb && 1004 !virtio_mem_mb_test_sb_plugged(vm, mb_id, sb_id + count, 1005 1)) 1006 count++; 1007 1008 rc = virtio_mem_mb_plug_sb(vm, mb_id, sb_id, count); 1009 if (rc) 1010 return rc; 1011 *nb_sb -= count; 1012 if (!online) 1013 continue; 1014 1015 /* fake-online the pages if the memory block is online */ 1016 pfn = PFN_DOWN(virtio_mem_mb_id_to_phys(mb_id) + 1017 sb_id * vm->subblock_size); 1018 nr_pages = PFN_DOWN(count * vm->subblock_size); 1019 virtio_mem_fake_online(pfn, nr_pages); 1020 } 1021 1022 if (virtio_mem_mb_test_sb_plugged(vm, mb_id, 0, vm->nb_sb_per_mb)) { 1023 if (online) 1024 virtio_mem_mb_set_state(vm, mb_id, 1025 VIRTIO_MEM_MB_STATE_ONLINE); 1026 else 1027 virtio_mem_mb_set_state(vm, mb_id, 1028 VIRTIO_MEM_MB_STATE_OFFLINE); 1029 } 1030 > 1031 return rc; 1032 } 1033 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
