[scan-admin at coverity.com: New Defects reported by Coverity Scan for Das U-Boot]
Tom Rini
trini at konsulko.com
Tue Jul 27 04:52:10 CEST 2021
----- Forwarded message from scan-admin at coverity.com -----
Date: Tue, 27 Jul 2021 01:10:27 +0000 (UTC)
From: scan-admin at coverity.com
To: tom.rini at gmail.com
Subject: New Defects reported by Coverity Scan for Das U-Boot
Hi,
Please find the latest report on new defect(s) introduced to Das U-Boot found with Coverity Scan.
6 new defect(s) introduced to Das U-Boot found with Coverity Scan.
9 defect(s), reported by Coverity Scan earlier, were marked fixed in the recent build analyzed by Coverity Scan.
New defect(s) Reported-by: Coverity Scan
Showing 6 of 6 defect(s)
** CID 332931: Control flow issues (NO_EFFECT)
/drivers/clk/clk_kendryte.c: 852 in k210_pll_set_rate()
________________________________________________________________________________________________________
*** CID 332931: Control flow issues (NO_EFFECT)
/drivers/clk/clk_kendryte.c: 852 in k210_pll_set_rate()
846 int err;
847 const struct k210_pll_params *pll = &k210_plls[id];
848 struct k210_pll_config config = {};
849 u32 reg;
850 ulong calc_rate;
851
>>> CID 332931: Control flow issues (NO_EFFECT)
>>> This less-than-zero comparison of an unsigned value is never true. "rate_in < 0UL".
852 if (rate_in < 0)
853 return rate_in;
854
855 err = k210_pll_calc_config(rate, rate_in, &config);
856 if (err)
857 return err;
** CID 332930: Integer handling issues (NO_EFFECT)
/lib/display_options.c: 216 in print_buffer()
________________________________________________________________________________________________________
*** CID 332930: Integer handling issues (NO_EFFECT)
/lib/display_options.c: 216 in print_buffer()
210 while (count) {
211 uint thislinelen;
212 char buf[HEXDUMP_MAX_BUF_LENGTH(width * linelen)];
213
214 thislinelen = hexdump_line(addr, data, width, count, linelen,
215 buf, sizeof(buf));
>>> CID 332930: Integer handling issues (NO_EFFECT)
>>> This greater-than-or-equal-to-zero comparison of an unsigned value is always true. "thislinelen >= 0U".
216 assert(thislinelen >= 0);
217 puts(buf);
218 putc('\n');
219
220 /* update references */
221 data += thislinelen * width;
** CID 332929: Integer handling issues (NO_EFFECT)
/drivers/clk/clk_kendryte.c: 898 in k210_pll_get_rate()
________________________________________________________________________________________________________
*** CID 332929: Integer handling issues (NO_EFFECT)
/drivers/clk/clk_kendryte.c: 898 in k210_pll_get_rate()
892 static ulong k210_pll_get_rate(struct k210_clk_priv *priv, int id,
893 ulong rate_in)
894 {
895 u64 r, f, od;
896 u32 reg = readl(priv->base + k210_plls[id].off);
897
>>> CID 332929: Integer handling issues (NO_EFFECT)
>>> This less-than-zero comparison of an unsigned value is never true. "rate_in < 0UL".
898 if (rate_in < 0 || (reg & K210_PLL_BYPASS))
899 return rate_in;
900
901 if (!(reg & K210_PLL_PWRD))
902 return 0;
903
** CID 332928: Integer handling issues (NO_EFFECT)
/common/log.c: 305 in _log_buffer()
________________________________________________________________________________________________________
*** CID 332928: Integer handling issues (NO_EFFECT)
/common/log.c: 305 in _log_buffer()
299 while (count) {
300 uint thislinelen;
301 char buf[HEXDUMP_MAX_BUF_LENGTH(width * linelen)];
302
303 thislinelen = hexdump_line(addr, data, width, count, linelen,
304 buf, sizeof(buf));
>>> CID 332928: Integer handling issues (NO_EFFECT)
>>> This greater-than-or-equal-to-zero comparison of an unsigned value is always true. "thislinelen >= 0U".
305 assert(thislinelen >= 0);
306 _log(cat, level, file, line, func, "%s\n", buf);
307
308 /* update references */
309 data += thislinelen * width;
310 addr += thislinelen * width;
** CID 332927: (DIVIDE_BY_ZERO)
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
________________________________________________________________________________________________________
*** CID 332927: (DIVIDE_BY_ZERO)
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
778 } else {
779 /*
780 * There is no way to only divide once; we need
781 * to examine the frequency with and without the
782 * effect of od.
783 */
>>> CID 332927: (DIVIDE_BY_ZERO)
>>> In function call "__div64_32", division by expression "__base" which may be zero has undefined behavior.
784 u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
785
786 if (vco > 1750000000 || vco < 340000000)
787 out_of_spec = true;
788 }
789
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
778 } else {
779 /*
780 * There is no way to only divide once; we need
781 * to examine the frequency with and without the
782 * effect of od.
783 */
>>> CID 332927: (DIVIDE_BY_ZERO)
>>> In expression "(u32)_tmp % __base", modulo by expression "__base" which may be zero has undefined behavior.
784 u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
785
786 if (vco > 1750000000 || vco < 340000000)
787 out_of_spec = true;
788 }
789
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
778 } else {
779 /*
780 * There is no way to only divide once; we need
781 * to examine the frequency with and without the
782 * effect of od.
783 */
>>> CID 332927: (DIVIDE_BY_ZERO)
>>> In function call "__div64_32", division by expression "__base" which may be zero has undefined behavior.
784 u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
785
786 if (vco > 1750000000 || vco < 340000000)
787 out_of_spec = true;
788 }
789
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
778 } else {
779 /*
780 * There is no way to only divide once; we need
781 * to examine the frequency with and without the
782 * effect of od.
783 */
>>> CID 332927: (DIVIDE_BY_ZERO)
>>> In function call "__div64_32", division by expression "__base" which may be zero has undefined behavior.
784 u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
785
786 if (vco > 1750000000 || vco < 340000000)
787 out_of_spec = true;
788 }
789
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
778 } else {
779 /*
780 * There is no way to only divide once; we need
781 * to examine the frequency with and without the
782 * effect of od.
783 */
>>> CID 332927: (DIVIDE_BY_ZERO)
>>> In function call "__div64_32", division by expression "__base" which may be zero has undefined behavior.
784 u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
785
786 if (vco > 1750000000 || vco < 340000000)
787 out_of_spec = true;
788 }
789
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
778 } else {
779 /*
780 * There is no way to only divide once; we need
781 * to examine the frequency with and without the
782 * effect of od.
783 */
>>> CID 332927: (DIVIDE_BY_ZERO)
>>> In function call "__div64_32", division by expression "__base" which may be zero has undefined behavior.
784 u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
785
786 if (vco > 1750000000 || vco < 340000000)
787 out_of_spec = true;
788 }
789
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
778 } else {
779 /*
780 * There is no way to only divide once; we need
781 * to examine the frequency with and without the
782 * effect of od.
783 */
>>> CID 332927: (DIVIDE_BY_ZERO)
>>> In expression "(u32)_tmp % __base", modulo by expression "__base" which may be zero has undefined behavior.
784 u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
785
786 if (vco > 1750000000 || vco < 340000000)
787 out_of_spec = true;
788 }
789
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
778 } else {
779 /*
780 * There is no way to only divide once; we need
781 * to examine the frequency with and without the
782 * effect of od.
783 */
>>> CID 332927: (DIVIDE_BY_ZERO)
>>> In expression "(u32)_tmp % __base", modulo by expression "__base" which may be zero has undefined behavior.
784 u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
785
786 if (vco > 1750000000 || vco < 340000000)
787 out_of_spec = true;
788 }
789
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
778 } else {
779 /*
780 * There is no way to only divide once; we need
781 * to examine the frequency with and without the
782 * effect of od.
783 */
>>> CID 332927: (DIVIDE_BY_ZERO)
>>> In expression "(u32)_tmp % __base", modulo by expression "__base" which may be zero has undefined behavior.
784 u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
785
786 if (vco > 1750000000 || vco < 340000000)
787 out_of_spec = true;
788 }
789
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
778 } else {
779 /*
780 * There is no way to only divide once; we need
781 * to examine the frequency with and without the
782 * effect of od.
783 */
>>> CID 332927: (DIVIDE_BY_ZERO)
>>> In expression "(u32)_tmp % __base", modulo by expression "__base" which may be zero has undefined behavior.
784 u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
785
786 if (vco > 1750000000 || vco < 340000000)
787 out_of_spec = true;
788 }
789
/drivers/clk/clk_kendryte.c: 784 in k210_pll_calc_config()
778 } else {
779 /*
780 * There is no way to only divide once; we need
781 * to examine the frequency with and without the
782 * effect of od.
783 */
>>> CID 332927: (DIVIDE_BY_ZERO)
>>> In expression "(u32)_tmp % __base", modulo by expression "__base" which may be zero has undefined behavior.
784 u64 vco = DIV_ROUND_CLOSEST_ULL(rate_in * f, r);
785
786 if (vco > 1750000000 || vco < 340000000)
787 out_of_spec = true;
788 }
789
** CID 332926: API usage errors (CHAR_IO)
/common/autoboot.c: 95 in passwd_abort_crypt()
________________________________________________________________________________________________________
*** CID 332926: API usage errors (CHAR_IO)
/common/autoboot.c: 95 in passwd_abort_crypt()
89 do {
90 if (tstc()) {
91 /* Check for input string overflow */
92 if (presskey_len >= sizeof(presskey))
93 return 0;
94
>>> CID 332926: API usage errors (CHAR_IO)
>>> Assigning the return value of "getchar" to char "presskey[presskey_len]" truncates its value.
95 presskey[presskey_len] = getchar();
96
97 if ((presskey[presskey_len] == '\r') ||
98 (presskey[presskey_len] == '\n')) {
99 if (IS_ENABLED(CONFIG_AUTOBOOT_NEVER_TIMEOUT) &&
100 !presskey_len) {
________________________________________________________________________________________________________
To view the defects in Coverity Scan visit, https://u15810271.ct.sendgrid.net/ls/click?upn=HRESupC-2F2Czv4BOaCWWCy7my0P0qcxCbhZ31OYv50yoA22WlOQ-2By3ieUvdbKmOyw68TMVT4Kip-2BBzfOGWXJ5yIiYplmPF9KAnKIja4Zd7tU-3DgJHe_EEm8SbLgSDsaDZif-2Bv7ch8WqhKpLoKErHi4nXpwDNTvYvjbZ9T6kqAgpHsL-2FhWyLWnQSgvdEHm6q866xWqhF8Kmj20Sw-2BzKXCiftzibA0uYIZFV1vWC-2FCXF6Dh6IUI5qabfVwsX4r17fuZmWj1IE9lgKHs0WTSBRQjnbruexWDlIvVYutFNrdA8azZiOmUFO6-2FIEOap-2BpBRs7mGOMMevZw-3D-3D
To manage Coverity Scan email notifications for "tom.rini at gmail.com", click https://u15810271.ct.sendgrid.net/ls/click?upn=HRESupC-2F2Czv4BOaCWWCy7my0P0qcxCbhZ31OYv50yped04pjJnmXOsUBtKYNIXxWeIHzDeopm-2BEWQ6S6K-2FtUHv9ZTk8qZbuzkkz9sa-2BJFw4elYDyedRVZOC-2ButxjBZdouVmTGuWB6Aj6G7lm7t25-2Biv1B-2B9082pHzCCex2kqMs-3DJ_Gj_EEm8SbLgSDsaDZif-2Bv7ch8WqhKpLoKErHi4nXpwDNTvYvjbZ9T6kqAgpHsL-2FhWyLCbMsoi8Sh2iVNRO-2F4TymJeWpR6YUe5abzfxZiSqdMBZVlERkyaxx1HaUIY6r92vdxJPh9Y1P2q2Jzb9e1sOCST8P9RzKNS5Cgy-2F0NiCXVB-2F-2BEazUIg-2BeJSNSm4v-2Bke0oWlGf3b6Paw7Los1KuqTOiQ-3D-3D
----- End forwarded message -----
--
Tom
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