Arnd Bergmann 17bdba70a8 autofs: use flexible array in ioctl structure ... commit e910c8e3aa upstream. Commit df8fc4e934 ("kbuild: Enable -fstrict-flex-arrays=3") introduced a warning for the autofs_dev_ioctl structure: In function 'check_name', inlined from 'validate_dev_ioctl' at fs/autofs/dev-ioctl.c:131:9, inlined from '_autofs_dev_ioctl' at fs/autofs/dev-ioctl.c:624:8: fs/autofs/dev-ioctl.c:33:14: error: 'strchr' reading 1 or more bytes from a region of size 0 [-Werror=stringop-overread] 33 | if (!strchr(name, '/')) | ^~~~~~~~~~~~~~~~~ In file included from include/linux/auto_dev-ioctl.h:10, from fs/autofs/autofs_i.h:10, from fs/autofs/dev-ioctl.c:14: include/uapi/linux/auto_dev-ioctl.h: In function '_autofs_dev_ioctl': include/uapi/linux/auto_dev-ioctl.h:112:14: note: source object 'path' of size 0 112 | char path[0]; | ^~~~ This is easily fixed by changing the gnu 0-length array into a c99 flexible array. Since this is a uapi structure, we have to be careful about possible regressions but this one should be fine as they are equivalent here. While it would break building with ancient gcc versions that predate c99, it helps building with --std=c99 and -Wpedantic builds in user space, as well as non-gnu compilers. This means we probably also want it fixed in stable kernels. Cc: stable@vger.kernel.org Cc: Kees Cook <keescook@chromium.org> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230523081944.581710-1-arnd@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-07-23 13:47:33 +02:00
..
asm-generic	signal: Deliver SIGTRAP on perf event asynchronously if blocked	2022-06-09 10:22:48 +02:00
drm	drm/fourcc: Add packed 10bit YUV 4:2:0 format	2022-12-31 13:14:10 +01:00
linux	autofs: use flexible array in ioctl structure	2023-07-23 13:47:33 +02:00
misc	habanalabs: fix resetting args in wait for CS IOCTL	2021-09-29 12:18:48 +03:00
mtd	mtd: add OTP (one-time-programmable) erase ioctl	2021-03-28 19:24:54 +02:00
rdma	RDMA/mlx5: Don't compare mkey tags in DEVX indirect mkey	2022-10-26 12:35:03 +02:00
scsi	scsi: fc: Add EDC ELS definition	2021-08-24 22:56:33 -04:00
sound	ASoC: Intel: Skylake: Fix declaration of enum skl_ch_cfg	2023-05-30 13:55:33 +01:00
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