Bug #75409 [NEW]: accept EFAULT in addition to ENOSYS as indicator that getrandom() is missing
From: martin dot zdrahal at s-team dot at
Operating system: Linux
PHP version: 7.1.10
Package: *Encryption and hash functions
Bug Type: Bug
Bug description:accept EFAULT in addition to ENOSYS as indicator that getrandom() is missing
Description:
------------
When running php -r '\random_int(0,20);' on my QNAP NAS, PHP always
returns an error. The kernel on my NAS returns EPERM instead of ENOSYS,
thus degrading to /dev/urandom does not happen.
This has been fixed in python a while back
(https://bugs.python.org/issue27955, albeit it does not catch EFAULT).
I suspect this behaviour exists in every PHP version that uses the
getrandom() syscall
Test script:
---------------
\random_int(0,20);
Actual result:
--------------
PHP Fatal error: Uncaught Exception: Could not gather sufficient random
data in Command line code:1
Stack trace:
#0 Command line code(1): random_int(0, 20)
#1 {main}
thrown in Command line code on line 1
strace output:
getrandom(0xbde13510, 4, 0) = -1 EFAULT (Bad address)
brk(0xb6587000) = 0xb6587000
writev(2, [{iov_base="", iov_len=0}, {iov_base="PHP Fatal error:
Uncaught Excep"..., iov_len=206}], 2PHP Fatal error: Uncaught
Exception: Could not gather sufficient random data in Command line
code:1
Stack trace:
#0 Command line code(1): random_int(0, 20)
#1 {main}
thrown in Command line code on line 1) = 206
writev(2, [{iov_base="\n", iov_len=1}, {iov_base=NULL, iov_len=0}], 2
--
Edit bug report at https://bugs.php.net/bug.php?id=75409&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75409&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75409&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75409&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=75409&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=75409&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=75409&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=75409&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=75409&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=75409&r=support
Expected behavior: https://bugs.php.net/fix.php?id=75409&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=75409&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=75409&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=75409&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75409&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=75409&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=75409&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=75409&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=75409&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=75409&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=75409&r=mysqlcfg
Thread (7 messages)
- martin dot zdrahal at s-team dot at