[FS#3277] malta/mipseb64:

OpenWrt Bugs openwrt-bugs at lists.openwrt.org
Fri Aug 14 10:42:50 EDT 2020


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The following task has a new comment added:

FS#3277 - malta/mipseb64:
User who did this - Tony Ambardar (guidosarducci)

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BTW, I realized the "exitcode" refers to a status returned by wait() which, in the case of signal termination, encodes the signal in the low byte. So yes, 0x0b is SIGSEGV.

I also keep coming back to the fact the invalid read access address and the epc are the same. It seems like there's a crazy jump being made into inaccessible memory, from somewhere well away (ra=000000fffc2f05f0) from the init code.

While booting with "init=/bin/sh" a few times, I could manually mount /proc and look at the self memory map. The previous ra seems very close to the [vvar]/[vdso] regions, which could make sense given a long jump, and gives me some ideas/clues to follow up on.

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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3277#comment8662

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