Skip protection from double decompression if inode from maps cannot be obtained

[azat]

Under some circumstances, like using qemu-$ARCH-static, /proc/self/maps will not contain information about /proc/self/exe.

Well, strictly speaking it does contain, however qemu will not pass it to the user program:

strace

$ sudo strace -s10000 -f arch-chroot . /qemu-riscv64-static /clickhouse
...
execve("/qemu-riscv64-static", ["/qemu-riscv64-static", "/clickhouse"], 0x7fffffffe458 /* 20 vars */) = 0
readlinkat(AT_FDCWD, "/proc/self/exe", "/qemu-riscv64-static", 4096) = 20
openat(AT_FDCWD, "/proc/self/maps", O_RDONLY|O_CLOEXEC) = 4
[pid  3126] read(4, "00010000-00111000 r--p 00000000 fe:01 30312571                           /clickhouse\n00111000-00119000 r--p 00100000 fe:01 30312571                           /clickhouse\n00119000-0011a000 rw-p 00108000 fe:01 30312571                           /clickhouse\n0011a000-0013d000 rw-p 00000000 00:00 0 \n4000000000-4000001000 ---p 00000000 00:00 0 \n4000001000-4000801000 rw-p 00000000 00:00 0 \n4000801000-400081a000 r--p 00000000 fe:01 30316932                       /lib/riscv64-linux-gnu/ld-2.32.so\n400081a000-400081b000 ---p 00000000 00:00 0 \n400081b000-400081c000 r--p 00019000 fe:01 30316932                       /lib/riscv64-linux-gnu/ld-2.32.so\n400081c000-400081e000 rw-p 0001a000 fe:01 30316932                       /lib/riscv64-linux-gnu/ld-2.32.so\n400081e000-400081f000 r--p 00000000 00:00 0 \n400081f000-4000922000 r--p 00000000 fe:01 30316935 /lib/riscv64-linux-gnu/libc-2.32.so\n4000922000-4000926000 r--p 00102000 fe:01 30316935                       /lib/riscv64-linux-gnu/libc-2.32.so\n4000926000-4000928000 rw-p 00106000 fe:01 30316935                       /lib/riscv64-linux-gnu/libc-2.32.so\n4000928000-400092d000 rw-p 00000000 00:00 0 \n400092d000-40009af000 r--p 00000000 fe:01 30316943                       /lib/riscv64-linux-gnu/libm-2.32.so\n40009af000-40009b0000 r--p 00081000 fe:01 30316943                       /lib/riscv64-linux-gnu/libm-2.32.so\n40009b0000-40009b1000 rw-p 00082000 fe:01 30316943 /lib/riscv64-linux-gnu/libm-2.32.so\n40009b1000-40009c5000 r--p 00000000 fe:01 30316946                       /lib/riscv64-linux-gnu/libpthread-2.32.so\n40009c5000-40009c6000 r--p 00013000 fe:01 30316946                       /lib/riscv64-linux-gnu/libpthread-2.32.so\n40009c6000-40009c7000 rw-p 00014000 fe:01 30316946                       /lib/riscv64-linux-gnu/libpthread-2.32.so\n40009c7000-40009cb000 rw-p 00000000 00:00 0 \n40009cb000-40009cd000 r--p 00000000 fe:01 30316939                       /lib/riscv64-linux-gnu/libdl-2.32.so\n40009cd000-40009ce000 r--p 00001000 fe:01 30316939                       /lib/riscv64-linux-gnu/libdl-2.32.so\n40009ce000-40009cf000 rw-p 00002000 fe:01 30316939                       /lib/riscv64-linux-gnu/libdl-2.32.so\n40009cf000-40009d1000 rw-p 00000000 00:00 0 \n7fffe8000000-7fffeffff000 rwxp 00000000 00:00 0 \n7fffeffff000-7ffff0000000 ---p 00000000 00:00 0 \n7ffff0000000-7ffff0021000 rw-p 00000000 00:00 0 \n7ffff0021000-7ffff4000000 ---p 00000000 00:00 0 \n7ffff6b4b000-7ffff6b5b000 rw-p 00000000 00:00 0 \n7ffff71ff000-7ffff7200000 ---p 00000000 00:00 0 \n7ffff7200000-7ffff7a00000 rw-p 00000000 00:00 0\n7ffff7a00000-7ffff7a3c000 r--p 00000000 fe:01 30316953                   /qemu-riscv64-static\n7ffff7a3c000-7ffff7c74000 r-xp 0003c000 fe:01 30316953                   /qemu-riscv64-static\n7ffff7c74000-7ffff7d77000 r--p 00274000 fe:01 30316953                   /qemu-riscv64-static\n7ffff7d77000-7ffff7dce000 r--p 00377000 fe:01 30316953                   /qemu-riscv64-static\n7ffff7dce000-7ffff7df7000 rw-p 003ce000 fe:01 30316953                   /qemu-riscv64-static\n7ffff7df7000-7ffff7e0c000 rw-p 00000000 00:00 0                          [heap]\n7ffff7e0c000-7ffff7e70000 rw-p 00000000 00:00 0                          [heap]\n7ffff7f42000-7ffff7ff9000 rw-p 00000000 00:00 0 \n7ffff7ff9000-7ffff7ffd000 r--p 00000000 00:00 0                          [vvar]\n7ffff7ffd000-7ffff7fff000 r-xp 00000000 00:00 0                          [vdso]\n7ffffffde000-7ffffffff000 rw-p 00000000 00:00 0                          [stack]\nffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0                  [vsyscall]\n", 4096) = 3608
[pid  3126] read(4, "", 1024)           = 0
[pid  3126] close(4)                    = 0
[pid  3126] write(3, "10000-111000 r-xp 00000000 fe:01 30312571", 41) = 41
[pid  3126] write(3, "                                /clickhouse\n", 44) = 44
[pid  3126] write(3, "111000-119000 r--p 00100000 fe:01 30312571", 42) = 42
[pid  3126] write(3, "                               /clickhouse\n", 43) = 43
[pid  3126] write(3, "119000-11a000 rw-p 00108000 fe:01 30312571", 42) = 42
[pid  3126] write(3, "                               /clickhouse\n", 43) = 43
[pid  3126] write(3, "11a000-13d000 rw-p 00000000 00:00 0", 35) = 35
[pid  3126] write(3, "                                      \n", 39) = 39
[pid  3126] write(3, "4000000000-4000001000 ---p 00000000 00:00 0", 43) = 43
[pid  3126] write(3, "                              \n", 31) = 31
[pid  3126] write(3, "4000001000-4000801000 rw-p 00000000 00:00 0", 43) = 43
[pid  3126] write(3, "                              [stack]\n", 38) = 38
[pid  3126] write(3, "4000801000-400081a000 r-xp 00000000 fe:01 30316932", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/ld-2.32.so\n", 57 <unfinished ...>
[pid  3127] <... clock_nanosleep resumed>0x7ffff79ff060) = 0
[pid  3126] <... write resumed>)        = 57
[pid  3127] clock_nanosleep(CLOCK_REALTIME, 0, {tv_sec=0, tv_nsec=10000000},  <unfinished ...>
[pid  3126] write(3, "400081a000-400081b000 ---p 00000000 00:00 0", 43) = 43
[pid  3126] write(3, "                              \n", 31) = 31
[pid  3126] write(3, "400081b000-400081c000 r--p 00019000 fe:01 30316932", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/ld-2.32.so\n", 57) = 57
[pid  3126] write(3, "400081c000-400081e000 rw-p 0001a000 fe:01 30316932", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/ld-2.32.so\n", 57) = 57
[pid  3126] write(3, "400081e000-400081f000 r-xp 00000000 00:00 0", 43) = 43
[pid  3126] write(3, "                              \n", 31) = 31
[pid  3126] write(3, "400081f000-4000922000 r-xp 00000000 fe:01 30316935", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libc-2.32.so\n", 59) = 59
[pid  3126] write(3, "4000922000-4000926000 r--p 00102000 fe:01 30316935", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libc-2.32.so\n", 59) = 59
[pid  3126] write(3, "4000926000-4000928000 rw-p 00106000 fe:01 30316935", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libc-2.32.so\n", 59) = 59
[pid  3126] write(3, "4000928000-400092d000 rw-p 00000000 00:00 0", 43) = 43
[pid  3126] write(3, "                              \n", 31) = 31
[pid  3126] write(3, "400092d000-40009af000 r-xp 00000000 fe:01 30316943", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libm-2.32.so\n", 59) = 59
[pid  3126] write(3, "40009af000-40009b0000 r--p 00081000 fe:01 30316943", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libm-2.32.so\n", 59) = 59
[pid  3126] write(3, "40009b0000-40009b1000 rw-p 00082000 fe:01 30316943", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libm-2.32.so\n", 59) = 59
[pid  3126] write(3, "40009b1000-40009c5000 r-xp 00000000 fe:01 30316946", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libpthread-2.32.so\n", 65) = 65
[pid  3126] write(3, "40009c5000-40009c6000 r--p 00013000 fe:01 30316946", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libpthread-2.32.so\n", 65) = 65
[pid  3126] write(3, "40009c6000-40009c7000 rw-p 00014000 fe:01 30316946", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libpthread-2.32.so\n", 65) = 65
[pid  3126] write(3, "40009c7000-40009cb000 rw-p 00000000 00:00 0", 43) = 43
[pid  3126] write(3, "                              \n", 31) = 31
[pid  3126] write(3, "40009cb000-40009cd000 r-xp 00000000 fe:01 30316939", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libdl-2.32.so\n", 60) = 60
[pid  3126] write(3, "40009cd000-40009ce000 r--p 00001000 fe:01 30316939", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libdl-2.32.so\n", 60) = 60
[pid  3126] write(3, "40009ce000-40009cf000 rw-p 00002000 fe:01 30316939", 50) = 50
[pid  3126] write(3, "                       /lib/riscv64-linux-gnu/libdl-2.32.so\n", 60) = 60
[pid  3126] write(3, "40009cf000-40009d1000 rw-p 00000000 00:00 0", 43) = 43
[pid  3126] write(3, "                              \n", 31) = 31

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[robot-clickhouse-ci-1]

This is an automated comment for commit 20a671b with description of existing statuses. It's updated for the latest CI running
The full report is available here
The overall status of the commit is 🟢 success

Check name	Description	Status
AST fuzzer	Runs randomly generated queries to catch program errors. The build type is optionally given in parenthesis. If it fails, ask a maintainer for help	🟢 success
CI running	A meta-check that indicates the running CI. Normally, it's in success or pending state. The failed status indicates some problems with the PR	🟢 success
ClickHouse build check	Builds ClickHouse in various configurations for use in further steps. You have to fix the builds that fail. Build logs often has enough information to fix the error, but you might have to reproduce the failure locally. The cmake options can be found in the build log, grepping for cmake. Use these options and follow the general build process	🟢 success
Compatibility check	Checks that clickhouse binary runs on distributions with old libc versions. If it fails, ask a maintainer for help	🟢 success
Docker image for servers	The check to build and optionally push the mentioned image to docker hub	🟢 success
Fast test	Normally this is the first check that is ran for a PR. It builds ClickHouse and runs most of stateless functional tests, omitting some. If it fails, further checks are not started until it is fixed. Look at the report to see which tests fail, then reproduce the failure locally as described here	🟢 success
Flaky tests	Checks if new added or modified tests are flaky by running them repeatedly, in parallel, with more randomization. Functional tests are run 100 times with address sanitizer, and additional randomization of thread scheduling. Integrational tests are run up to 10 times. If at least once a new test has failed, or was too long, this check will be red. We don't allow flaky tests, read the doc	🟢 success
Install packages	Checks that the built packages are installable in a clear environment	🟢 success
Integration tests	The integration tests report. In parenthesis the package type is given, and in square brackets are the optional part/total tests	🟢 success
Mergeable Check	Checks if all other necessary checks are successful	🟢 success
Performance Comparison	Measure changes in query performance. The performance test report is described in detail here. In square brackets are the optional part/total tests	🟢 success
Push to Dockerhub	The check for building and pushing the CI related docker images to docker hub	🟢 success
SQLancer	Fuzzing tests that detect logical bugs with SQLancer tool	🟢 success
Sqllogic	Run clickhouse on the sqllogic test set against sqlite and checks that all statements are passed	🟢 success
Stateful tests	Runs stateful functional tests for ClickHouse binaries built in various configurations -- release, debug, with sanitizers, etc	🟢 success
Stateless tests	Runs stateless functional tests for ClickHouse binaries built in various configurations -- release, debug, with sanitizers, etc	🟢 success
Stress test	Runs stateless functional tests concurrently from several clients to detect concurrency-related errors	🟢 success
Style Check	Runs a set of checks to keep the code style clean. If some of tests failed, see the related log from the report	🟢 success
Unit tests	Runs the unit tests for different release types	🟢 success
Upgrade check	Runs stress tests on server version from last release and then tries to upgrade it to the version from the PR. It checks if the new server can successfully startup without any errors, crashes or sanitizer asserts	🟢 success