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| author | John Crispin <john@openwrt.org> | 2015-10-26 10:39:41 +0000 |
|---|---|---|
| committer | John Crispin <john@openwrt.org> | 2015-10-26 10:39:41 +0000 |
| commit | c89fc7a75a13c18b9bb219b52e4c3828dc8988b5 (patch) | |
| tree | b5d57427823e4f28bebcaa2764356f000d4be801 | |
| parent | 06b032d6dcb8d7a610af08a7a28561e7bcd5b2de (diff) | |
| download | mtk-20170518-c89fc7a75a13c18b9bb219b52e4c3828dc8988b5.zip mtk-20170518-c89fc7a75a13c18b9bb219b52e4c3828dc8988b5.tar.gz mtk-20170518-c89fc7a75a13c18b9bb219b52e4c3828dc8988b5.tar.bz2 | |
kernel: Fix environment pointer setup in ar71xx/ath79
Observed on ar71xx/ath79 platforms such as Ubiquiti RouterStations.Reported in #20642.:
(https://dev.openwrt.org/ticket/20642).
If embedded command-line text exists with CONFIG_IMAGE_CMDLINE_HACK=y,firmware
init doesn't initialize environment pointer (fw_init_cmdline not called).
arcs_cmdline is not initialized before calling strlcat.
Signed-off-by: Ted Hess <thess@kitschensync.net>
Tested-by: Stijn Tintel <stijn@linux-ipv6.be>
SVN-Revision: 47270
| -rw-r--r-- | target/linux/ar71xx/patches-4.1/508-MIPS-ath79-prom-image-command-line-hack.patch | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/target/linux/ar71xx/patches-4.1/508-MIPS-ath79-prom-image-command-line-hack.patch b/target/linux/ar71xx/patches-4.1/508-MIPS-ath79-prom-image-command-line-hack.patch index ff9f1aa..cfa5e72 100644 --- a/target/linux/ar71xx/patches-4.1/508-MIPS-ath79-prom-image-command-line-hack.patch +++ b/target/linux/ar71xx/patches-4.1/508-MIPS-ath79-prom-image-command-line-hack.patch @@ -1,6 +1,6 @@ --- a/arch/mips/ath79/prom.c +++ b/arch/mips/ath79/prom.c -@@ -33,6 +33,35 @@ static void __init ath79_prom_append_cmd +@@ -33,6 +33,41 @@ static void __init ath79_prom_append_cmd strlcat(arcs_cmdline, ath79_cmdline_buf, sizeof(arcs_cmdline)); } @@ -27,6 +27,12 @@ + strlcat(arcs_cmdline, p, sizeof(arcs_cmdline)); + } + ++ /* Validate and setup environment pointer */ ++ if (fw_arg2 < CKSEG0) ++ _fw_envp = NULL; ++ else ++ _fw_envp = (int *)fw_arg2; ++ + return 1; +} +#else @@ -36,7 +42,7 @@ static int __init ath79_prom_init_myloader(void) { struct myloader_info *mylo; -@@ -61,6 +90,8 @@ static int __init ath79_prom_init_myload +@@ -61,6 +96,8 @@ static int __init ath79_prom_init_myload ath79_prom_append_cmdline("ethaddr", mac_buf); @@ -45,7 +51,7 @@ return 1; } -@@ -71,7 +102,8 @@ void __init prom_init(void) +@@ -71,7 +108,8 @@ void __init prom_init(void) if (ath79_prom_init_myloader()) return; @@ -55,3 +61,13 @@ env = fw_getenv("ethaddr"); if (env) +--- a/arch/mips/fw/lib/cmdline.c ++++ b/arch/mips/fw/lib/cmdline.c +@@ -35,6 +35,7 @@ void __init fw_init_cmdline(void) + else + _fw_envp = (int *)fw_arg2; + ++ arcs_cmdline[0] = '\0'; + for (i = 1; i < fw_argc; i++) { + strlcat(arcs_cmdline, fw_argv(i), COMMAND_LINE_SIZE); + if (i < (fw_argc - 1)) |