Messages in this thread |  | | | Date | Sun, 10 Apr 2011 19:15:58 +0200 | | Subject | Re: Crash with kfree(null) on MacBook? kobject_set_name_vargs | | From | Rafał Miłecki <> |
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W dniu 10 kwietnia 2011 19:14 użytkownik Rafał Miłecki <zajec5@gmail.com> napisał: > I'm writing new axi bus driver and one of the early testers reported > it crashing for him. Andy is using MacBook and backtrace+debugging > pretty clearly point to kfree being called on null string. > > The most interesting part of code is: > axi_info("[axi_register_cores][%d] current name: %s\n", i, core->dev.kobj.name); > axi_info("[axi_register_cores][%d] calling dev_set_name with %d, %d > for 0x%03X\n", i, 0/*bus->busnumber*/, dev_id, core->id.id); > err = dev_set_name(&core->dev, "axi%d:%d", 0/*bus->busnumber*/, dev_id); > axi_info("[axi_register_cores][%d] dev_set_name result: %d\n", i, err); > > The result is: > [axi_register_cores][1] current name: (null) > [axi_register_cores][1] calling dev_set_name with 0, 0 for 0x812 > BUG: unable to handle kernel paging request at ffffeba400000000 > IP: [<ffffffff8108c4d4>] kfree+0x2a/0x8a > > Whole code: http://pastie.org/1779473 > Whole result: http://pastie.org/1779416 > > Can you help me with this issue, please? On my machine everything goes fine: > [axi_register_cores][1] current name: (null) > [axi_register_cores][1] calling dev_set_name with 0, 0 for 0x812 > [axi_register_cores][1] dev_set_name result: 0 > [axi_register_cores][1] Register dev for core 0x812 > > bcopeland on #linux-wireless suggested turning on SLAB or SLUB. Is > this going to provide some interesting info?
Link to kobject_set_name_vargs for lazy ;) http://lxr.free-electrons.com/source/lib/kobject.c#L215
-- Rafał -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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