kernel-hacking-2024-linux-s.../block/partitions
Riyan Dhiman 26e197b7f9 block: fix potential invalid pointer dereference in blk_add_partition
The blk_add_partition() function initially used a single if-condition
(IS_ERR(part)) to check for errors when adding a partition. This was
modified to handle the specific case of -ENXIO separately, allowing the
function to proceed without logging the error in this case. However,
this change unintentionally left a path where md_autodetect_dev()
could be called without confirming that part is a valid pointer.

This commit separates the error handling logic by splitting the
initial if-condition, improving code readability and handling specific
error scenarios explicitly. The function now distinguishes the general
error case from -ENXIO without altering the existing behavior of
md_autodetect_dev() calls.

Fixes: b72053072c (block: allow partitions on host aware zone devices)
Signed-off-by: Riyan Dhiman <riyandhiman14@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240911132954.5874-1-riyandhiman14@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-09-12 08:46:40 -06:00
..
acorn.c
aix.c
amiga.c
atari.c
atari.h
check.h
cmdline.c block: fix and simplify blkdevparts= cmdline parsing 2024-05-03 09:57:53 -06:00
core.c block: fix potential invalid pointer dereference in blk_add_partition 2024-09-12 08:46:40 -06:00
efi.c
efi.h
ibm.c
karma.c
Kconfig
ldm.c block/partitions/ldm: convert strncpy() to strscpy() 2024-04-25 21:07:07 -07:00
ldm.h
mac.c block: partitions: only define function mac_fix_string for CONFIG_PPC_PMAC 2024-03-09 07:31:42 -07:00
mac.h
Makefile
msdos.c
osf.c
sgi.c
sun.c
sysv68.c
ultrix.c