odroidgoA: Patches to build with GCC 10 #410

Backport of 168200b upstream Signed-off-by: Gleb Mazovetskiy <[email protected]>

Based on https://git.yoctoproject.org/cgit/cgit.cgi/meta-arm/tree/meta-arm-bsp/recipes-kernel/linux/linux-yocto-5.3/0003-perf-bench-Share-some-global-variables-to-fix-build-.patch Signed-off-by: Gleb Mazovetskiy <[email protected]>

Based on http://lore.kernel.org/lkml/[email protected] Signed-off-by: Gleb Mazovetskiy <[email protected]>

GCC9 introduced string hardening mechanisms, which exhibits the error during fs api compilation: error: '__builtin_strncpy' specified bound 4096 equals destination size [-Werror=stringop-truncation] This comes when the length of copy passed to strncpy is is equal to destination size, which could potentially lead to buffer overflow. There is a need to mitigate this potential issue by limiting the size of destination by 1 and explicitly terminate the destination with NULL. Signed-off-by: Andrey Zhizhikin <[email protected]> Reviewed-by: Petr Mladek <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Andrii Nakryiko <[email protected]> Cc: Daniel Borkmann <[email protected]> Cc: Kefeng Wang <[email protected]> Cc: Martin KaFai Lau <[email protected]> Cc: Petr Mladek <[email protected]> Cc: Sergey Senozhatsky <[email protected]> Cc: Song Liu <[email protected]> Cc: Yonghong Song <[email protected]> Cc: [email protected] Cc: [email protected] Link: http://lore.kernel.org/lkml/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Backport https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0b999ae3614d09d97a1575936bcee884f912b10e Signed-off-by: Gleb Mazovetskiy <[email protected]>

gcc-10 emits the following error: > warning: array subscript 0 is outside the bounds of an interior zero-length array 'u8[0]' {aka 'unsigned char[0]'} [-Wzero-length-bounds] Based on https://lkml.org/lkml/2020/4/30/1476 Signed-off-by: Gleb Mazovetskiy <[email protected]>

Fixes the following W=1 kernel build warning(s): Cc: Kalle Valo <[email protected]> Cc: "David S. Miller" <[email protected]> Cc: Jakub Kicinski <[email protected]> Cc: Luciano Coelho <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: Lee Jones <[email protected]> Signed-off-by: Kalle Valo <[email protected]> Link: https://lore.kernel.org/r/[email protected]

Backport of https://lkml.org/lkml/2020/4/30/1475 Signed-off-by: Gleb Mazovetskiy <[email protected]>

Backport of 9d82973 Original description below --- Due to a bug-report that was compiler-dependent, I updated one of my machines to gcc-10. That shows a lot of new warnings. Happily they seem to be mostly the valid kind, but it's going to cause a round of churn for getting rid of them.. This is the really low-hanging fruit of removing a couple of zero-sized arrays in some core code. We have had a round of these patches before, and we'll have many more coming, and there is nothing special about these except that they were particularly trivial, and triggered more warnings than most. Signed-off-by: Linus Torvalds <[email protected]>

drivers/input/joystick/analog.c: In function 'analog_connect': drivers/input/joystick/analog.c:444:3: warning: 'snprintf' argument 4 overlaps destination object '<unknown>' [-Wrestrict] error, forbidden warning:analog.c:444 444 | snprintf(analog->name, sizeof(analog->name), "%s %d-hat", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 445 | analog->name, hweight16(analog->mask & ANALOG_HATS_ALL)); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Gleb Mazovetskiy <[email protected]>

Fixes drivers/net/phy/mdio_bus.c: In function 'phy_registers_show': drivers/net/phy/mdio_bus.c:665:3: warning: 'sprintf' argument 3 overlaps destination object 'buf' [-Wrestrict] error, forbidden warning:mdio_bus.c:665 665 | sprintf(buf, "%s%2d: 0x%x\n", buf, index, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 666 | phy_read(phydev, index)); | ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/phy/mdio_bus.c:659:77: note: destination object referenced by 'restrict'-qualified argument 1 was declared here 659 | phy_registers_show(struct device *dev, struct device_attribute *attr, char *buf) | ~~~~~~^~~ Signed-off-by: Gleb Mazovetskiy <[email protected]>

Fixes errors such as: drivers/net/wireless/rtl8821cu/os_dep/linux/ioctl_mp.c: In function 'rtw_mp_txpower_index': drivers/net/wireless/rtl8821cu/os_dep/linux/ioctl_mp.c:573:4: warning: 'sprintf' argument 3 overlaps destination object 'extra' [-Wrestrict] error, forbidden warning:ioctl_mp.c:573 573 | sprintf(extra, "%s,pathb=%d", extra, txpower_inx); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/rtl8821cu/os_dep/linux/ioctl_mp.c:546:34: note: destination object referenced by 'restrict'-qualified argument 1 was declared here 546 | struct iw_point *wrqu, char *extra) | ~~~~~~^~~~~ Signed-off-by: Gleb Mazovetskiy <[email protected]>

Signed-off-by: Al Viro <[email protected]>

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odroidgoA: Patches to build with GCC 10 #410

odroidgoA: Patches to build with GCC 10 #410

Commits on Jan 25, 2021

odroidgoA: Patches to build with GCC 10 #410

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odroidgoA: Patches to build with GCC 10 #410

Commits on Jan 25, 2021