GNU find segfault under uftrace

[voltagex]

uftrace ./find/find
WARN: unpaired cygprof exit: dropping...
WARN: Segmentation fault: address not mapped (addr: 0x11)
WARN:  if this happens only with uftrace, please consider -e/--estimate-return option.

WARN: Backtrace from uftrace v0.17 ( x86_64 dwarf python3 luajit tui perf sched dynamic kernel )
WARN: =====================================
WARN: [15] (set_option_defaults[40a2ce] <= main[401afd])
WARN: [14] (compute_bucket_size[41e07c] <= hash_initialize[41e1fa])
WARN: [13] (hash_initialize[41e170] <= mcount_return[7f075aaa9b37])
WARN: [12] (hash_initialize[41e186] <= sharefile_init[40e4b7])
WARN: [11] (sharefile_init[40e450] <= mcount_return[7f075aaa9b37])
WARN: [10] (sharefile_init[40e462] <= main[401ae3])
WARN: [9] (fd_leak_check_is_enabled[417b9e] <= main[401ad1])
WARN: [8] (open_safer[41a1a0] <= save_cwd[42beb9])
WARN: [7] (save_cwd[42be80] <= mcount_return[7f075aaa9b37])
WARN: [6] (save_cwd[42be8c] <= record_initial_cwd[40a444])
WARN: [5] (xmalloc[42e11e] <= record_initial_cwd[40a435])
WARN: [4] (record_initial_cwd[40a410] <= mcount_return[7f075aaa9b37])
WARN: [3] (record_initial_cwd[40a41d] <= main[401aaa])
WARN: [2] (set_program_name[427d32] <= main[401aa5])
WARN: [1] (main[401a70] <= mcount_return[7f075aaa9b37])
WARN: [0] (main[401a80] <= __libc_start_call_main[7f075a761248])

Please report this bug to https://github.com/namhyung/uftrace/issues.

findutils from https://git.savannah.gnu.org/git/findutils.git a78812c62e76830709d80194770c7436c5da725e

[namhyung]

Hello, sorry for the long delay. It seems you added -finstrument-functions flag when you built the findutils. Can you please share CFLAGS or whole compile command (for a file) you used?

[voltagex]

it's been a while since I looked at this, I will try to see if I still have the files and information this week

[namhyung]

Great, thanks!

[voltagex]

All I have is some of the history file from when I was using this, sorry.

2025-01-01 16:42:33     CFLAGS="-pg -finstrument-functions" make -j16   18ms
2025-01-01 16:43:12     CFLAGS="-pg -finstrument-functions" make -j16   4s
2025-01-01 16:43:31     CFLAGS="-pg -finstrument-functions" make -j16   362ms
2025-01-01 16:48:13     CC="gcc -pg -finstrument-functions -Og" CFLAGS="-pg -finstrument-functions" make -j16   2s
2025-01-01 16:52:28     CC="gcc -pg -finstrument-functions -Og -frecord-gcc-switches" CFLAGS="-pg -finstrument-functions" make -j16     370ms
2025-01-01 16:52:59     CC="gcc -pg -finstrument-functions -Og -frecord-gcc-switches" CFLAGS="-pg -finstrument-functions" make -j16     2s
2025-01-01 16:53:38     CC="gcc -pg -finstrument-functions -Og -frecord-gcc-switches" CFLAGS="-pg -finstrument-functions" ./configure   25s
2025-01-01 16:55:55     CC="gcc -pg -finstrument-functions" ./configure 5s
2025-01-01 16:56:07     CC="gcc -pg -finstrument-functions -frecord-switches" ./configure       205ms
2025-01-01 16:56:15     CC="gcc -pg -finstrument-functions -fgcc-record-switches" ./configure   222ms
2025-01-01 16:56:37     CC="gcc -pg -finstrument-functions -frecord-gcc-switches" ./configure   25s

As you can see, I did not know what I was doing.

[voltagex]

This Dockerfile reproduces the crash

I was having issues with the Git server, so this requires git clone --recursive https://git.savannah.gnu.org/git/findutils.git into the same path as your Dockerfile

FROM debian:trixie-slim
RUN apt update && apt install --no-install-recommends ca-certificates build-essential autoconf automake git autopoint bison gettext texinfo wget python3 -y
WORKDIR /src/
#RUN GIT_TRACE=1 git clone --recursive https://git.savannah.gnu.org/git/findutils.git
COPY findutils findutils
WORKDIR /src/findutils
ENV CC="gcc -pg -finstrument-functions -frecord-gcc-switches"
RUN ./autogen.sh && ./configure --disable-dependency-tracking
RUN make -j4

RUN apt install -y uftrace

RUN uftrace ./find/find .

[namhyung]

Please do not use -pg and -finstrument-functions together. Maybe we need to check this in uftrace and warn users not to do that.

[namhyung]

Have you changed the build option and checked if it runs ok?

[voltagex]

Have you changed the build option and checked if it runs ok?

Sorry I haven't been able to get back to this. I believe you are 100% correct and this can be closed