c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 02:27:36 +03:00
Code Issues Packages Projects Releases Wiki Activity

Replace P2ALIGN with P2ALIGN_TYPED and delete P2ALIGN.

Browse Source 
In P2ALIGN, the result would be incorrect when align is unsigned
integer and x is larger than max value of the type of align.
In that case, -(align) would be a positive integer, which means
high bits would be zero and finally stay zero after '&' when
align is converted to a larger integer type.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Youzhong Yang <yyang@mathworks.com>
Signed-off-by: Qiuhao Chen <chenqiuhao1997@gmail.com>
Closes #15940
This commit is contained in:
chenqiuhao1997
2024-05-10 23:47:21 +08:00
committed by Brian Behlendorf
parent 2566592045
commit 9edf6af4ae
16 changed files with 40 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/libefi/rdwr_efi.c
+2 -2
View File
@@ -1175,8 +1175,8 @@ efi_use_whole_disk(int fd)
* (for performance reasons). The alignment should match the
* alignment used by the "zpool_label_disk" function.
*/
limit = P2ALIGN(efi_label->efi_last_lba - nblocks - EFI_MIN_RESV_SIZE,
PARTITION_END_ALIGNMENT);
limit = P2ALIGN_TYPED(efi_label->efi_last_lba - nblocks -
EFI_MIN_RESV_SIZE, PARTITION_END_ALIGNMENT, diskaddr_t);
if (data_start + data_size != limit || resv_start != limit)
sync_needed = B_TRUE;