Messages in this thread | | | Date | Thu, 10 May 2001 20:44:27 +0200 | From | Jesper Juhl <> | Subject | mmap2 causes SIGBUS on 2.4.4-ac6 |
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After compiling and installing a 2.4.4-ac6 kernel I noticed that some programs (notably 'grep') started crashing with 'Bus error's and captured some 'strace' output... In all cases the last four lines of output from strace are:
mmap2(0x8059000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0x8059000 mmap2(0x8059000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0xe00008) = 0x8059000 --- SIGBUS (Bus error) --- +++ killed by SIGBUS +++
For those who would like to try and reproduce it, this command generates it every time:
$ grep foo /usr/src/linux/Documentation/*
So there seems to be some mmap related problem with 2.4.4-ac6. I tried running the exact same commands on a 2.2.17 and 2.2.19 and they do not exhibit this behaviour. I can try some more 2.4.x kernels if the information would be valuable? If there is any other relevant information I can gather, then please let me know and I'll be happy to provide it.
I tried searching for "mmap2" and "SIGBUS" on http://www.uwsg.indiana.edu/hypermail/linux/kernel/ but could not find any posts related to this, so I thought it would be ok to post this.
Best regards, Jesper Juhl - juhl@eisenstein.dk
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