1089614 - logalloc causes a deadlock on shutdown

Status: NEW

(Core :: Memory Allocator, defect)

Description

[Guilherme Gonçalves [:ggp]]

Attachment: stack

When logalloc is being used to record memory allocations and XPCOM is being shutdown, the write() call made by FdPrintf causes malloc() to be called. But we are, of course, already inside replace_malloc(), and re-entering causes it to attempt to lock an already locked sLock. This makes the browser hang on shutdown.

I have reproduced this on Mac (stack attached), but it might also happen in other platforms. Maybe.

Comment 1

[Guilherme Gonçalves [:ggp]]

This looks like a rather similar, but Mac-specific, variant of bug 1087245. The Mac-specific part comes from the fact that the stack is different, but the general problem -- PoisonIOInterposer allocating memory -- is the same.