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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 05:34:00 +08:00
linux-next/tools
Andrii Nakryiko 9fb156bb82 selftests/bpf: Print backtrace on SIGSEGV in test_progs
Due to various bugs in tests clean up code (usually), if host system is
misconfigured, it happens that test_progs will just crash in the middle of
running a test with little to no indication of where and why the crash
happened. For cases where coredump is not readily available (e.g., inside
a CI), it's very helpful to have a stack trace, which lead to crash, to be
printed out. This change adds a signal handler that will capture and print out
symbolized backtrace:

  $ sudo ./test_progs -t mmap
  test_mmap:PASS:skel_open_and_load 0 nsec
  test_mmap:PASS:bss_mmap 0 nsec
  test_mmap:PASS:data_mmap 0 nsec
  Caught signal #11!
  Stack trace:
  ./test_progs(crash_handler+0x18)[0x42a888]
  /lib64/libpthread.so.0(+0xf5d0)[0x7f2aab5175d0]
  ./test_progs(test_mmap+0x3c0)[0x41f0a0]
  ./test_progs(main+0x160)[0x407d10]
  /lib64/libc.so.6(__libc_start_main+0xf5)[0x7f2aab15d3d5]
  ./test_progs[0x407ebc]
  [1]    1988412 segmentation fault (core dumped)  sudo ./test_progs -t mmap

Unfortunately, glibc's symbolization support is unable to symbolize static
functions, only global ones will be present in stack trace. But it's still a
step forward without adding extra libraries to get a better symbolization.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200225000847.3965188-1-andriin@fb.com
2020-02-25 22:43:02 +01:00
..
accounting
arch tools headers kvm: Sync kvm headers with the kernel sources 2020-02-12 12:41:20 -03:00
bootconfig tools/bootconfig: Suppress non-error messages 2020-02-10 17:22:56 -05:00
bpf bpftool: Don't crash on missing xlated program instructions 2020-02-07 22:29:45 +01:00
build perf/ui/gtk: Fix gtk2 build 2020-01-14 12:40:33 -03:00
cgroup iocost: Fix iocost_monitor.py due to helper type mismatch 2020-01-17 11:54:35 -08:00
debugging
firewire
firmware
gpio tools: gpio: Correctly add make dependencies for gpio_utils 2019-11-13 13:46:04 +01:00
hv Tools: hv: Reopen the devices if read() or write() returns errors 2020-01-26 22:10:10 -05:00
iio tools: iio: Correctly add make dependency for iio_utils 2019-11-10 17:11:06 +00:00
include Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-02-21 15:22:45 -08:00
io_uring
kvm/kvm_stat tools/kvm_stat: Fix kvm_exit filter name 2020-01-23 09:51:06 +01:00
laptop
leds
lib Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-02-21 15:22:45 -08:00
memory-model tools/memory-model/Documentation: Add plain accesses and data races to explanation.txt 2019-10-05 11:59:44 -07:00
nfsd
objtool objtool: Fix ARCH=x86_64 build error 2020-01-22 07:54:57 +01:00
pci tools: PCI: Fix fd leakage 2019-10-29 12:04:18 +00:00
pcmcia
perf perf llvm: Fix script used to obtain kernel make directives to work with new kbuild 2020-02-14 10:06:00 -03:00
power More power manadement updates for 5.6-rc1 2020-01-31 14:36:35 -08:00
scripts
spi
testing selftests/bpf: Print backtrace on SIGSEGV in test_progs 2020-02-25 22:43:02 +01:00
thermal/tmon
time
usb usbip: Fix unsafe unaligned pointer usage 2020-01-09 16:44:26 +01:00
virtio tools/virtio: xen stub 2019-10-13 09:38:27 -04:00
vm tools/vm/slabinfo: fix sanity checks enabling 2020-01-31 10:30:38 -08:00
wmi
Makefile tools: bootconfig: Add bootconfig command 2020-01-13 13:19:39 -05:00