Merge tag 'bootconfig-fixes-v6.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

Pull bootconfig fix from Masami Hiramatsu:
"Fix negative seeks on 32-bit with LFS enabled

On 32bit architecture, -BOOTCONFIG_FOOTER_SIZE (size_t, 32bit) becomes
a positive value when it is passed to lseek() because it is cast to
off_t (64bit). Thus, add type casts"

* tag 'bootconfig-fixes-v6.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
bootconfig: Fix negative seeks on 32-bit with LFS enabled

Linus Torvalds 7 months ago 43f981b7 41cd3fd1

+2 -2

1 changed file

expand all

tools

bootconfig

main.c

+2 -2

tools/bootconfig/main.c

··· 193 193 if (stat.st_size < BOOTCONFIG_FOOTER_SIZE) 194 194 return 0; 195 195 196 - if (lseek(fd, -BOOTCONFIG_MAGIC_LEN, SEEK_END) < 0) 196 + if (lseek(fd, -(off_t)BOOTCONFIG_MAGIC_LEN, SEEK_END) < 0) 197 197 return pr_errno("Failed to lseek for magic", -errno); 198 198 199 199 if (read(fd, magic, BOOTCONFIG_MAGIC_LEN) < 0) ··· 203 203 if (memcmp(magic, BOOTCONFIG_MAGIC, BOOTCONFIG_MAGIC_LEN) != 0) 204 204 return 0; 205 205 206 - if (lseek(fd, -BOOTCONFIG_FOOTER_SIZE, SEEK_END) < 0) 206 + if (lseek(fd, -(off_t)BOOTCONFIG_FOOTER_SIZE, SEEK_END) < 0) 207 207 return pr_errno("Failed to lseek for size", -errno); 208 208 209 209 if (read(fd, &size, sizeof(uint32_t)) < 0)