From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============4327237027546399728==" MIME-Version: 1.0 From: kernel test robot Subject: drivers/pinctrl/renesas/core.c:131:16: warning: Possible null pointer dereference: r [nullPointer] Date: Wed, 21 Jul 2021 03:56:42 +0800 Message-ID: <202107210334.xdJsJNC9-lkp@intel.com> List-Id: To: kbuild@lists.01.org --===============4327237027546399728== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable CC: kbuild-all(a)lists.01.org CC: linux-kernel(a)vger.kernel.org TO: Julian Braha CC: Andrew Morton CC: Linux Memory Management List Hi Julian, First bad commit (maybe !=3D root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git = master head: 8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b commit: 7d37cb2c912dc5c25ffac784a4f9b98c06c6bd08 lib: fix kconfig dependenc= y on ARCH_WANT_FRAME_POINTERS date: 3 months ago :::::: branch date: 20 hours ago :::::: commit date: 3 months ago compiler: csky-linux-gcc (GCC) 10.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot cppcheck possible warnings: (new ones prefixed by >>, may not real problems) >> drivers/pinctrl/renesas/core.c:131:16: warning: Possible null pointer de= reference: r [nullPointer] if (enum_id < r->begin) ^ drivers/pinctrl/renesas/core.c:323:11: note: Assignment 'range=3DNULL', = assigned value is 0 range =3D NULL; ^ drivers/pinctrl/renesas/core.c:371:46: note: Calling function 'sh_pfc_en= um_in_range', 2nd argument 'range' value is 0 in_range =3D sh_pfc_enum_in_range(enum_id, range); ^ drivers/pinctrl/renesas/core.c:131:16: note: Null pointer dereference if (enum_id < r->begin) ^ drivers/pinctrl/renesas/core.c:134:16: warning: Possible null pointer de= reference: r [nullPointer] if (enum_id > r->end) ^ drivers/pinctrl/renesas/core.c:323:11: note: Assignment 'range=3DNULL', = assigned value is 0 range =3D NULL; ^ drivers/pinctrl/renesas/core.c:371:46: note: Calling function 'sh_pfc_en= um_in_range', 2nd argument 'range' value is 0 in_range =3D sh_pfc_enum_in_range(enum_id, range); ^ drivers/pinctrl/renesas/core.c:134:16: note: Null pointer dereference if (enum_id > r->end) ^ vim +131 drivers/pinctrl/renesas/core.c 934cb02bab9003 drivers/pinctrl/sh-pfc/core.c Laurent Pinchart 2013-02-14 1= 28 = 533743dccb517b drivers/pinctrl/sh-pfc/core.c Laurent Pinchart 2013-07-15 1= 29 static int sh_pfc_enum_in_range(u16 enum_id, const struct pinmux_range = *r) 2967dab1ae37e3 arch/sh/kernel/gpio.c Magnus Damm 2008-10-08 1= 30 { 2967dab1ae37e3 arch/sh/kernel/gpio.c Magnus Damm 2008-10-08 @1= 31 if (enum_id < r->begin) 2967dab1ae37e3 arch/sh/kernel/gpio.c Magnus Damm 2008-10-08 1= 32 return 0; 2967dab1ae37e3 arch/sh/kernel/gpio.c Magnus Damm 2008-10-08 1= 33 = 2967dab1ae37e3 arch/sh/kernel/gpio.c Magnus Damm 2008-10-08 1= 34 if (enum_id > r->end) 2967dab1ae37e3 arch/sh/kernel/gpio.c Magnus Damm 2008-10-08 1= 35 return 0; 2967dab1ae37e3 arch/sh/kernel/gpio.c Magnus Damm 2008-10-08 1= 36 = 2967dab1ae37e3 arch/sh/kernel/gpio.c Magnus Damm 2008-10-08 1= 37 return 1; 2967dab1ae37e3 arch/sh/kernel/gpio.c Magnus Damm 2008-10-08 1= 38 } 2967dab1ae37e3 arch/sh/kernel/gpio.c Magnus Damm 2008-10-08 1= 39 = :::::: The code at line 131 was first introduced by commit :::::: 2967dab1ae37e30f1b71316513b49fd25c42eabe sh: GPIO and pinmux base co= de :::::: TO: Magnus Damm :::::: CC: Paul Mundt --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org --===============4327237027546399728==--