Buildresult: gustavoars/nds32-allmodconfig/nds32le-gcc8 built on Jun 18 2021, 03:01

kisskb

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Status:	OK
Date/Time:	Jun 18 2021, 03:01
Duration:	0:17:43.581875
Builder:	blade4b
Revision:	media: siano: Fix out-of-bounds warnings in smscore_load_firmware_family2() (`305b46ebb0ead283ed6589172c91e851eb483141)`
Target:	gustavoars/nds32-allmodconfig/nds32le-gcc8
Branch:	gustavoars
Compiler:	nds32le-gcc8 (nds32le-linux-gcc (GCC) 8.1.0 / GNU ld (GNU Binutils) 2.30.51.20180307)
Config:	allmodconfig (download)
Log:	Download original Possible warnings (6) <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] arch/nds32/kernel/setup.c:247:26: warning: unused variable 'region' [-Wunused-variable] drivers/input/joystick/analog.c:160:2: warning: #warning Precise timer not defined for this architecture. [-Wcpp] #warning Precise timer not defined for this architecture. WARNING: modpost: EXPORT symbol "clear_page" [vmlinux] version generation failed, symbol will not be versioned. WARNING: modpost: EXPORT symbol "copy_page" [vmlinux] version generation failed, symbol will not be versioned. Full Log # git rev-parse -q --verify 305b46ebb0ead283ed6589172c91e851eb483141^{commit} 305b46ebb0ead283ed6589172c91e851eb483141 already have revision, skipping fetch # git checkout -q -f -B kisskb 305b46ebb0ead283ed6589172c91e851eb483141 # git clean -qxdf # < git log -1 # commit 305b46ebb0ead283ed6589172c91e851eb483141 # Author: Gustavo A. R. Silva <gustavoars@kernel.org> # Date: Wed Mar 10 19:40:43 2021 -0600 # # media: siano: Fix out-of-bounds warnings in smscore_load_firmware_family2() # # Rename struct sms_msg_data4 to sms_msg_data5 and increase the size of # its msg_data array from 4 to 5 elements. Notice that at some point # the 5th element of msg_data is being accessed in function # smscore_load_firmware_family2(): # # 1006 trigger_msg->msg_data[4] = 4; /* Task ID / # # Also, there is no need for the object _trigger_msg_ of type struct # sms_msg_data , when _msg_ can be used, directly. Notice that msg_data # in struct sms_msg_data is a one-element array, which causes multiple # out-of-bounds warnings when accessing beyond its first element # in function smscore_load_firmware_family2(): # # 992 struct sms_msg_data trigger_msg = # 993 (struct sms_msg_data ) msg; # 994 # 995 pr_debug("sending MSG_SMS_SWDOWNLOAD_TRIGGER_REQ\n"); # 996 SMS_INIT_MSG(&msg->x_msg_header, # 997 MSG_SMS_SWDOWNLOAD_TRIGGER_REQ, # 998 sizeof(struct sms_msg_hdr) + # 999 sizeof(u32) * 5); # 1000 # 1001 trigger_msg->msg_data[0] = firmware->start_address; # 1002 /* Entry point / # 1003 trigger_msg->msg_data[1] = 6; / Priority / # 1004 trigger_msg->msg_data[2] = 0x200; / Stack size / # 1005 trigger_msg->msg_data[3] = 0; / Parameter / # 1006 trigger_msg->msg_data[4] = 4; / Task ID / # # even when enough dynamic memory is allocated for _msg_: # # 929 / PAGE_SIZE buffer shall be enough and dma aligned / # 930 msg = kmalloc(PAGE_SIZE, GFP_KERNEL \| coredev->gfp_buf_flags); # # but as _msg_ is casted to (struct sms_msg_data ): # # 992 struct sms_msg_data trigger_msg = # 993 (struct sms_msg_data ) msg; # # the out-of-bounds warnings are actually valid and should be addressed. # # Fix this by declaring object _msg_ of type struct sms_msg_data5 , # which contains a 5-elements array, instead of just 4. And use # _msg_ directly, instead of creating object trigger_msg. # # This helps with the ongoing efforts to enable -Warray-bounds by fixing # the following warnings: # # CC [M] drivers/media/common/siano/smscoreapi.o # drivers/media/common/siano/smscoreapi.c: In function ‘smscore_load_firmware_family2’: # drivers/media/common/siano/smscoreapi.c:1003:24: warning: array subscript 1 is above array bounds of ‘u32[1]’ {aka ‘unsigned int[1]’} [-Warray-bounds] # 1003 \| trigger_msg->msg_data[1] = 6; / Priority / # \| ~~~~~~~~~~~~~~~~~~~~~^~~ # In file included from drivers/media/common/siano/smscoreapi.c:12: # drivers/media/common/siano/smscoreapi.h:619:6: note: while referencing ‘msg_data’ # 619 \| u32 msg_data[1]; # \| ^~~~~~~~ # drivers/media/common/siano/smscoreapi.c:1004:24: warning: array subscript 2 is above array bounds of ‘u32[1]’ {aka ‘unsigned int[1]’} [-Warray-bounds] # 1004 \| trigger_msg->msg_data[2] = 0x200; / Stack size / # \| ~~~~~~~~~~~~~~~~~~~~~^~~ # In file included from drivers/media/common/siano/smscoreapi.c:12: # drivers/media/common/siano/smscoreapi.h:619:6: note: while referencing ‘msg_data’ # 619 \| u32 msg_data[1]; # \| ^~~~~~~~ # drivers/media/common/siano/smscoreapi.c:1005:24: warning: array subscript 3 is above array bounds of ‘u32[1]’ {aka ‘unsigned int[1]’} [-Warray-bounds] # 1005 \| trigger_msg->msg_data[3] = 0; / Parameter / # \| ~~~~~~~~~~~~~~~~~~~~~^~~ # In file included from drivers/media/common/siano/smscoreapi.c:12: # drivers/media/common/siano/smscoreapi.h:619:6: note: while referencing ‘msg_data’ # 619 \| u32 msg_data[1]; # \| ^~~~~~~~ # drivers/media/common/siano/smscoreapi.c:1006:24: warning: array subscript 4 is above array bounds of ‘u32[1]’ {aka ‘unsigned int[1]’} [-Warray-bounds] # 1006 \| trigger_msg->msg_data[4] = 4; / Task ID / # \| ~~~~~~~~~~~~~~~~~~~~~^~~ # In file included from drivers/media/common/siano/smscoreapi.c:12: # drivers/media/common/siano/smscoreapi.h:619:6: note: while referencing ‘msg_data’ # 619 \| u32 msg_data[1]; # \| ^~~~~~~~ # # Fixes: 018b0c6f8acb ("[media] siano: make load firmware logic to work with newer firmwares") # Co-developed-by: Kees Cook <keescook@chromium.org> # Signed-off-by: Kees Cook <keescook@chromium.org> # Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux-ld --version # < git log --format=%s --max-count=1 305b46ebb0ead283ed6589172c91e851eb483141 # < make -s -j 24 ARCH=nds32 O=/kisskb/build/gustavoars_nds32-allmodconfig_nds32le-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux- allmodconfig # < make -s -j 24 ARCH=nds32 O=/kisskb/build/gustavoars_nds32-allmodconfig_nds32le-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux- help # make -s -j 24 ARCH=nds32 O=/kisskb/build/gustavoars_nds32-allmodconfig_nds32le-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux- olddefconfig # make -s -j 24 ARCH=nds32 O=/kisskb/build/gustavoars_nds32-allmodconfig_nds32le-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/nds32le-linux/bin/nds32le-linux- <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] /kisskb/src/arch/nds32/kernel/setup.c: In function 'setup_memory': /kisskb/src/arch/nds32/kernel/setup.c:247:26: warning: unused variable 'region' [-Wunused-variable] struct memblock_region region; ^~~~~~ /kisskb/src/drivers/input/joystick/analog.c:160:2: warning: #warning Precise timer not defined for this architecture. [-Wcpp] #warning Precise timer not defined for this architecture. ^~~~~~~ WARNING: modpost: EXPORT symbol "clear_page" [vmlinux] version generation failed, symbol will not be versioned. WARNING: modpost: EXPORT symbol "copy_page" [vmlinux] version generation failed, symbol will not be versioned. Completed OK # rm -rf /kisskb/build/gustavoars_nds32-allmodconfig_nds32le-gcc8 # Build took: 0:17:43.581875

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