kernel/drivers/scsi/bfa/bfa_fcs_lport.c, branch linux-6.9.y

scsi: bfa: Fix function pointer type mismatch for state machines

2024-02-27T02:16:48Z

The bfa driver is full of state machines and a generic abstraction layer for them. This relies on casting function pointers, but that is no longer allowed when CONFIG_CFI_CLANG is enabled and causes a huge number of warnings like: drivers/scsi/bfa/bfad.c:169:3: error: cast from 'void (*)(struct bfad_s *, enum bfad_sm_event)' to 'bfa_sm_t' (aka 'void (*)(void *, int)') converts to incompatible function type [-Werror,-Wcast-function-type-strict] bfa_sm_set_state(bfad, bfad_sm_created); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Rework the mechanism to no longer require the function pointer casts, by having separate types for each individual state machine. This in turn requires moving the enum definitions for each state machine into the header files in order to define the typedef. Reviewed-by: Kees Cook Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20240222124433.2046570-2-arnd@kernel.org Signed-off-by: Martin K. Petersen

scsi: bfa: Replace all non-returning strlcpy() with strscpy()

2023-05-17T01:38:36Z

strlcpy() reads the entire source buffer first. This read may exceed the destination size limit. This is both inefficient and can lead to linear read overflows if a source string is not NUL-terminated [1]. In an effort to remove strlcpy() completely [2], replace strlcpy() here with strscpy(). No return values were used, so direct replacement is safe. [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy [2] https://github.com/KSPP/linux/issues/89 Signed-off-by: Azeem Shaikh Link: https://lore.kernel.org/r/20230516013345.723623-1-azeemshaikh38@gmail.com Reviewed-by: Kees Cook Signed-off-by: Martin K. Petersen

scsi: bfa: Move a large struct from the stack onto the heap

2021-03-16T02:28:58Z

Fixes the following W=1 kernel build warning(s): drivers/scsi/bfa/bfa_fcs_lport.c: In function ‘bfa_fcs_lport_fdmi_build_rhba_pyld’: drivers/scsi/bfa/bfa_fcs_lport.c:2152:1: warning: the frame size of 1200 bytes is larger than 1024 bytes [-Wframe-larger-than=] Link: https://lore.kernel.org/r/20210312094738.2207817-15-lee.jones@linaro.org Cc: Anil Gurumurthy Cc: Sudarsana Kalluru Cc: "James E.J. Bottomley" Cc: "Martin K. Petersen" Cc: linux-scsi@vger.kernel.org Signed-off-by: Lee Jones Signed-off-by: Martin K. Petersen

scsi: bfa: Fix fall-through warnings for Clang

2020-12-02T17:59:46Z

In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple warnings by explicitly adding a couple break statements and replacing /* fall through */ comments with the new pseudo-keyword macro fallthrough; instead of just letting the code fall through to the next case. Notice that Clang doesn't recognize /* fall through */ comments as implicit fall-through markings. Link: https://github.com/KSPP/linux/issues/115 Link: https://lore.kernel.org/r/2ae1cafd858238b85fc5e7fe5cc183843e21ec9f.1605896059.git.gustavoars@kernel.org Signed-off-by: Gustavo A. R. Silva Signed-off-by: Martin K. Petersen

treewide: Use fallthrough pseudo-keyword

2020-08-23T22:36:59Z

Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva

scsi: bfa: Remove unneeded semicolon in bfa_fcs_lport_ns_sm_online()

2020-04-24T22:21:15Z

Fix the following coccicheck warning: drivers/scsi/bfa/bfa_fcs_lport.c:4361:3-4: Unneeded semicolon Link: https://lore.kernel.org/r/20200418070553.11262-1-yanaijie@huawei.com Reported-by: Hulk Robot Signed-off-by: Jason Yan Signed-off-by: Martin K. Petersen

scsi: bfa: bfa_fcs_lport.c: make bfa_fcport_get_loop_attr() static

2020-04-15T01:34:51Z

Fix the following sparse warning: drivers/scsi/bfa/bfa_fcs_lport.c:1287:1: warning: symbol 'bfa_fcport_get_loop_attr' was not declared. Should it be static? Link: https://lore.kernel.org/r/20200407032202.36789-5-yanaijie@huawei.com Reported-by: Hulk Robot Signed-off-by: Jason Yan Signed-off-by: Martin K. Petersen

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 292

2019-06-05T15:36:38Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license gpl version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 66 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Alexios Zavras Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.606369721@linutronix.de Signed-off-by: Greg Kroah-Hartman

scsi: bfa: bfa_fcs_lport: Mark expected switch fall-throughs

2019-01-12T02:47:47Z

In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that, in this particular case, I replaced "!!! fall through !!!" with a "fall through" annotation, which is what GCC is expecting to find. Signed-off-by: Gustavo A. R. Silva Acked-by: Sudarsana Kalluru Signed-off-by: Martin K. Petersen

scsi: bfa: convert to strlcpy/strlcat

2017-12-12T02:30:46Z

The bfa driver has a number of real issues with string termination that gcc-8 now points out: drivers/scsi/bfa/bfad_bsg.c: In function 'bfad_iocmd_port_get_attr': drivers/scsi/bfa/bfad_bsg.c:320:9: error: argument to 'sizeof' in 'strncpy' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess] drivers/scsi/bfa/bfa_fcs.c: In function 'bfa_fcs_fabric_psymb_init': drivers/scsi/bfa/bfa_fcs.c:775:9: error: argument to 'sizeof' in 'strncat' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess] drivers/scsi/bfa/bfa_fcs.c:781:9: error: argument to 'sizeof' in 'strncat' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess] drivers/scsi/bfa/bfa_fcs.c:788:9: error: argument to 'sizeof' in 'strncat' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess] drivers/scsi/bfa/bfa_fcs.c:801:10: error: argument to 'sizeof' in 'strncat' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess] drivers/scsi/bfa/bfa_fcs.c:808:10: error: argument to 'sizeof' in 'strncat' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess] drivers/scsi/bfa/bfa_fcs.c: In function 'bfa_fcs_fabric_nsymb_init': drivers/scsi/bfa/bfa_fcs.c:837:10: error: argument to 'sizeof' in 'strncat' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess] drivers/scsi/bfa/bfa_fcs.c:844:10: error: argument to 'sizeof' in 'strncat' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess] drivers/scsi/bfa/bfa_fcs.c:852:10: error: argument to 'sizeof' in 'strncat' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess] drivers/scsi/bfa/bfa_fcs.c: In function 'bfa_fcs_fabric_psymb_init': drivers/scsi/bfa/bfa_fcs.c:778:2: error: 'strncat' output may be truncated copying 10 bytes from a string of length 63 [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcs.c:784:2: error: 'strncat' output may be truncated copying 30 bytes from a string of length 63 [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcs.c:803:3: error: 'strncat' output may be truncated copying 44 bytes from a string of length 63 [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcs.c:811:3: error: 'strncat' output may be truncated copying 16 bytes from a string of length 63 [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcs.c: In function 'bfa_fcs_fabric_nsymb_init': drivers/scsi/bfa/bfa_fcs.c:840:2: error: 'strncat' output may be truncated copying 10 bytes from a string of length 63 [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcs.c:847:2: error: 'strncat' output may be truncated copying 30 bytes from a string of length 63 [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcs_lport.c: In function 'bfa_fcs_fdmi_get_hbaattr': drivers/scsi/bfa/bfa_fcs_lport.c:2657:10: error: argument to 'sizeof' in 'strncat' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess] drivers/scsi/bfa/bfa_fcs_lport.c:2659:11: error: argument to 'sizeof' in 'strncat' call is the same expression as the source; did you mean to use the size of the destination? [-Werror=sizeof-pointer-memaccess] drivers/scsi/bfa/bfa_fcs_lport.c: In function 'bfa_fcs_lport_ms_gmal_response': drivers/scsi/bfa/bfa_fcs_lport.c:3232:5: error: 'strncpy' output may be truncated copying 16 bytes from a string of length 247 [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcs_lport.c: In function 'bfa_fcs_lport_ns_send_rspn_id': drivers/scsi/bfa/bfa_fcs_lport.c:4670:3: error: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcs_lport.c:4682:3: error: 'strncat' output truncated before terminating nul copying as many bytes from a string as its length [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcs_lport.c: In function 'bfa_fcs_lport_ns_util_send_rspn_id': drivers/scsi/bfa/bfa_fcs_lport.c:5206:3: error: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcs_lport.c:5215:3: error: 'strncat' output truncated before terminating nul copying as many bytes from a string as its length [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcs_lport.c: In function 'bfa_fcs_fdmi_get_portattr': drivers/scsi/bfa/bfa_fcs_lport.c:2751:2: error: 'strncpy' specified bound 128 equals destination size [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcbuild.c: In function 'fc_rspnid_build': drivers/scsi/bfa/bfa_fcbuild.c:1254:2: error: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Werror=stringop-truncation] drivers/scsi/bfa/bfa_fcbuild.c:1253:25: note: length computed here drivers/scsi/bfa/bfa_fcbuild.c: In function 'fc_rsnn_nn_build': drivers/scsi/bfa/bfa_fcbuild.c:1275:2: error: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Werror=stringop-truncation] In most cases, this can be addressed by correctly calling strlcpy and strlcat instead of strncpy/strncat, with the size of the destination buffer as the last argument. For consistency, I'm changing the other callers of strncpy() in this driver the same way. Signed-off-by: Arnd Bergmann Reviewed-by: Johannes Thumshirn Acked-by: Sudarsana Kalluru Signed-off-by: Martin K. Petersen