Re: [PATCH] image: Fix potentially uninitialized data variable
On Mon, Feb 27, 2023 at 08:56:31PM +0100, Marek Vasut wrote: > In case fitImage support is disabled, and image_locate_script() is > passed a fitImage, then the 'data' variable is used uninitialized. > Drop into the default: branch of the switch-case statement and do > not return the uninitialized data, and do not modify the return > pointer either, just print an error message. > > Reported by clang build: > " > $ make HOSTCC=clang CC=clang KCFLAGS=-Werror sandbox64_defconfig && make > HOSTCC=clang CC=clang KCFLAGS=-Werror > ... > boot/image-board.c:1006:7: error: variable 'data' is used uninitialized > whenever switch case is taken [-Werror,-Wsometimes-uninitialized] > case IMAGE_FORMAT_LEGACY: > ^~~ > include/image.h:608:29: note: expanded from macro 'IMAGE_FORMAT_LEGACY' > ^~~~ > boot/image-board.c:1128:19: note: uninitialized use occurs here > *datap = (char *)data; > ^~~~ > boot/image-board.c:1001:11: note: initialize the variable 'data' to silence > this warning > u32 *data; > ^ > = NULL > " > > Signed-off-by: Marek Vasut > Reviewed-by: Tom Rini > Reviewed-by: Simon Glass Applied to u-boot/next, thanks! -- Tom signature.asc Description: PGP signature
Re: [PATCH] image: Fix potentially uninitialized data variable
On 3/1/23 17:02, Tom Rini wrote: On Mon, Feb 27, 2023 at 08:56:31PM +0100, Marek Vasut wrote: In case fitImage support is disabled, and image_locate_script() is passed a fitImage, then the 'data' variable is used uninitialized. Drop into the default: branch of the switch-case statement and do not return the uninitialized data, and do not modify the return pointer either, just print an error message. Reported by clang build: " $ make HOSTCC=clang CC=clang KCFLAGS=-Werror sandbox64_defconfig && make HOSTCC=clang CC=clang KCFLAGS=-Werror ... boot/image-board.c:1006:7: error: variable 'data' is used uninitialized whenever switch case is taken [-Werror,-Wsometimes-uninitialized] case IMAGE_FORMAT_LEGACY: ^~~ include/image.h:608:29: note: expanded from macro 'IMAGE_FORMAT_LEGACY' ^~~~ boot/image-board.c:1128:19: note: uninitialized use occurs here *datap = (char *)data; ^~~~ boot/image-board.c:1001:11: note: initialize the variable 'data' to silence this warning u32 *data; ^ = NULL " Signed-off-by: Marek Vasut Reviewed-by: Tom Rini And can you please do a follow-up that adds sandbox64 + clang, after the sandbox + clang test in GitLab/Azure? The CI is chewing on it here: ahttps://source.denx.de/u-boot/custodians/u-boot-sh/-/commit/f80a434c2ea4fdae7adf0e4c4a0ecd9784d6808e
Re: [PATCH] image: Fix potentially uninitialized data variable
On Mon, 27 Feb 2023 at 12:56, Marek Vasut wrote: > > In case fitImage support is disabled, and image_locate_script() is > passed a fitImage, then the 'data' variable is used uninitialized. > Drop into the default: branch of the switch-case statement and do > not return the uninitialized data, and do not modify the return > pointer either, just print an error message. > > Reported by clang build: > " > $ make HOSTCC=clang CC=clang KCFLAGS=-Werror sandbox64_defconfig && make > HOSTCC=clang CC=clang KCFLAGS=-Werror > ... > boot/image-board.c:1006:7: error: variable 'data' is used uninitialized > whenever switch case is taken [-Werror,-Wsometimes-uninitialized] > case IMAGE_FORMAT_LEGACY: > ^~~ > include/image.h:608:29: note: expanded from macro 'IMAGE_FORMAT_LEGACY' > ^~~~ > boot/image-board.c:1128:19: note: uninitialized use occurs here > *datap = (char *)data; > ^~~~ > boot/image-board.c:1001:11: note: initialize the variable 'data' to silence > this warning > u32 *data; > ^ > = NULL > " > > Signed-off-by: Marek Vasut > --- > Cc: Heinrich Schuchardt > Cc: Michal Simek > Cc: Oleksandr Suvorov > Cc: Simon Glass > Cc: Stefan Roese > Cc: Tom Rini > --- > boot/image-board.c | 15 +++ > 1 file changed, 11 insertions(+), 4 deletions(-) > Reviewed-by: Simon Glass
Re: [PATCH] image: Fix potentially uninitialized data variable
On Mon, Feb 27, 2023 at 08:56:31PM +0100, Marek Vasut wrote: > In case fitImage support is disabled, and image_locate_script() is > passed a fitImage, then the 'data' variable is used uninitialized. > Drop into the default: branch of the switch-case statement and do > not return the uninitialized data, and do not modify the return > pointer either, just print an error message. > > Reported by clang build: > " > $ make HOSTCC=clang CC=clang KCFLAGS=-Werror sandbox64_defconfig && make > HOSTCC=clang CC=clang KCFLAGS=-Werror > ... > boot/image-board.c:1006:7: error: variable 'data' is used uninitialized > whenever switch case is taken [-Werror,-Wsometimes-uninitialized] > case IMAGE_FORMAT_LEGACY: > ^~~ > include/image.h:608:29: note: expanded from macro 'IMAGE_FORMAT_LEGACY' > ^~~~ > boot/image-board.c:1128:19: note: uninitialized use occurs here > *datap = (char *)data; > ^~~~ > boot/image-board.c:1001:11: note: initialize the variable 'data' to silence > this warning > u32 *data; > ^ > = NULL > " > > Signed-off-by: Marek Vasut Reviewed-by: Tom Rini And can you please do a follow-up that adds sandbox64 + clang, after the sandbox + clang test in GitLab/Azure? -- Tom signature.asc Description: PGP signature
