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authorChristian Krinitsin <mail@krinitsin.com>2025-07-05 20:00:38 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-07-05 20:00:38 +0200
commit96049c939b1916d80532630d63c14e04d5244f1d (patch)
tree7fb9df428f074078e714f1e038210cdff887185a /results/classifier/user-mode-bugs/1261
parent40bbb77d4dfebff4f99c2f90b2c0db737b0ecc5a (diff)
downloadqemu-analysis-96049c939b1916d80532630d63c14e04d5244f1d.tar.gz
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lock user-mode and semantic-bugs
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+
+qemu-user syscall 439 (faccessat2) not implemented - loongarch64
+Description of problem:
+On LoongArch64 architecture faccessat syscall is missing and only faccessat2 is present, but it is not handled in  linux-user/syscall
+Steps to reproduce:
+1. Launch a simple bash test script (call it test.sh): if [[ -r test.sh ]] ; then echo OK ; else echo ERROR ; fi
+2. The result is "ERROR" even if the file "test.sh" exists and it is readeable
+3. The correct result should be "OK"
+Additional information:
+test.sh:
+   ```
+   if [[ -r test.sh ]] ; then echo OK ; else echo ERROR ; fi
+   ```
+qemu-loongarch -strace log:
+   ```
+[...]
+12579 statx(255,"",AT_EMPTY_PATH|AT_NO_AUTOMOUNT,STATX_BASIC_STATS,0x0000004000802a50) = 0
+12579 lseek(255,0,SEEK_CUR) = 0
+12579 read(255,0x2016d490,56) = 56
+12579 Unknown syscall 439
+12579 write(1,0x20172010,6) = 6
+12579 read(255,0x2016d490,56) = 0
+12579 rt_sigprocmask(SIG_BLOCK,0x0000004000802b60,0x0000004000802be0) = 0
+12579 rt_sigprocmask(SIG_SETMASK,0x0000004000802be0,NULL) = 0
+12579 exit_group(0)
+   ```