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Arnaldo Carvalho de Melo c2b52963fd perf bench inject-buildid: Handle writen() errors 
[ Upstream commit edf7b4a2d85e37a1ee77156bddaed4aa6af9c5e1 ]

The build on fedora:35 and fedora:rawhide with clang is failing with:

  49    41.00 fedora:35                     : FAIL clang version 13.0.0 (Fedora 13.0.0~rc1-1.fc35)
    bench/inject-buildid.c:351:6: error: variable 'len' set but not used [-Werror,-Wunused-but-set-variable]
            u64 len = 0;
                ^
    1 error generated.
    make[3]: *** [/git/perf-5.14.0-rc7/tools/build/Makefile.build:139: bench] Error 2
  50    41.11 fedora:rawhide                : FAIL clang version 13.0.0 (Fedora 13.0.0~rc1-1.fc35)
    bench/inject-buildid.c:351:6: error: variable 'len' set but not used [-Werror,-Wunused-but-set-variable]
            u64 len = 0;
                ^
    1 error generated.
    make[3]: *** [/git/perf-5.14.0-rc7/tools/build/Makefile.build:139: bench] Error 2

That 'len' variable is not used at all, so just make sure all the
synthesize_RECORD() routines return ssize_t to propagate the writen()
return, as it may fail, ditch the 'ret' var and bail out if those
routines fail.

Fixes: 0bf02a0d80 ("perf bench: Add build-id injection benchmark")
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/CAM9d7cgEZNSor+B+7Y2C+QYGme_v5aH0Zn0RLfxoQ+Fy83EHrg@mail.gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-09-22 12:28:04 +02:00
arch ARC: export clear_user_page() for modules 2021-09-22 12:28:04 +02:00
block block, bfq: honor already-setup queue merges 2021-09-22 12:28:01 +02:00
certs certs: Trigger creation of RSA module signing key if it's not an RSA key 2021-09-15 09:50:29 +02:00
crypto crypto: sm2 - fix a memory leak in sm2 2021-07-14 16:56:06 +02:00
Documentation dt-bindings: mtd: gpmc: Fix the ECC bytes vs. OOB bytes equation 2021-09-22 12:27:59 +02:00
drivers mtd: rawnand: cafe: Fix a resource leak in the error handling path of 'cafe_nand_probe()' 2021-09-22 12:28:04 +02:00
fs fuse: fix use after free in fuse_read_interrupt() 2021-09-22 12:28:00 +02:00
include PCI: Sync __pci_register_driver() stub for CONFIG_PCI=n 2021-09-22 12:28:04 +02:00
init sched/core: Initialize the idle task with preemption disabled 2021-07-14 16:55:50 +02:00
ipc ipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry 2021-05-26 12:06:54 +02:00
kernel tracing/boot: Fix a hist trigger dependency for boot time tracing 2021-09-22 12:28:03 +02:00
lib lib/test_stackinit: Fix static initializer test 2021-09-18 13:40:37 +02:00
LICENSES
mm mm/memory_hotplug: use "unsigned long" for PFN in zone_for_pfn_range() 2021-09-22 12:27:59 +02:00
net netfilter: nft_ct: protect nft_ct_pcpu_template_refcnt with mutex 2021-09-22 12:28:03 +02:00
samples samples: bpf: Fix tracex7 error raised on the missing argument 2021-09-18 13:40:23 +02:00
scripts gen_compile_commands: fix missing 'sys' package 2021-09-22 12:27:58 +02:00
security Smack: Fix wrong semantics in smk_access_entry() 2021-09-18 13:40:18 +02:00
sound ASoC: rockchip: i2s: Fixup config for DAIFMT_DSP_A/B 2021-09-18 13:40:33 +02:00
tools perf bench inject-buildid: Handle writen() errors 2021-09-22 12:28:04 +02:00
usr
virt KVM: Do not leak memory for duplicate debugfs directories 2021-08-12 13:22:17 +02:00
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Makefile Linux 5.10.67 2021-09-18 13:40:38 +02:00
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