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| ID | Category | Severity | Reproducibility | Date Submitted | Last Update | ||||
| 0005627 | [Resin] | major | always | 01-03-14 13:16 | 09-12-14 10:50 | ||||
| Reporter | bean | View Status | public | ||||||
| Assigned To | ferg | ||||||||
| Priority | normal | Resolution | fixed | ||||||
| Status | closed | Product Version | 4.0.38 | ||||||
| Summary | 0005627: data corruption due to improper handing of EINTR | ||||||||
| Description |
several JNI methods do not handle an errno of EINTR. The result is corrupted data. EINTR is the status return of a syscall that was interrupted in order to deliver a signal to the thread. In general, the user process should just restart the syscall. The problem is most likely to occur when resin is sitting on a recv() waiting to get data and the recv syscall gets interrupted by a signal. The bad methods are: common/streams.c: std_read(), std_write(), cse_fill_buffer() resin_os/std.c: std_read(), std_read_nonblock(), std_write(), std_write_nonblock() |
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| Additional Information |
(1) The Azul JVM, Zing, can sometimes have a high signal rate, which has then hit this problem. (2) I've uploaded a fixed version of std.c, with the code ifdef'd by #ifdef FIX_EINTR, to illustrate the correct behavior. |
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| Attached Files |
 std.c [^] (11,818 bytes) 01-03-14 13:16 std.c.2 [^] (11,855 bytes) 01-15-14 08:30 |
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Notes |
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(0006389) bean 01-15-14 08:32 |
I found a typo in std.c after uploading it. The next file, std.c.2, has the typo fixed as well as identifying on other place where EINTR was not correctly handled. |
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Issue History |
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| Date Modified | Username | Field | Change |
| 01-03-14 13:16 | bean | New Issue | |
| 01-03-14 13:16 | bean | File Added: std.c | |
| 01-15-14 08:25 | bean | Issue Monitored: bean | |
| 01-15-14 08:30 | bean | File Added: std.c.2 | |
| 01-15-14 08:32 | bean | Note Added: 0006389 | |
| 09-12-14 10:50 | ferg | Assigned To | => ferg |
| 09-12-14 10:50 | ferg | Status | new => closed |
| 09-12-14 10:50 | ferg | Resolution | open => fixed |
| 09-12-14 10:50 | ferg | Fixed in Version | => 4.0.41 |
| 09-12-14 10:50 | ferg | Additional Information Updated | |
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