Opened 6 years ago
Closed 6 years ago
#14185 closed bug (invalid)
KDL: SMAP violation (XHCI)
| Reported by: | waddlesplash | Owned by: | korli |
|---|---|---|---|
| Priority: | critical | Milestone: | R1/beta1 |
| Component: | Drivers/USB/XHCI | Version: | R1/Development |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Platform: | All |
Description (last modified by )
Just pkgman full-sync'd to latest (hrev51988?) and got this on boot. Real hardware (Lenovo ThinkPad E550).
Attachments (1)
Change History (4)
by , 6 years ago
| Attachment: | XHCI_KDL.jpg added |
|---|
comment:1 by , 6 years ago
| Description: | modified (diff) |
|---|
comment:2 by , 6 years ago
comment:3 by , 6 years ago
| Resolution: | → invalid |
|---|---|
| Status: | assigned → closed |
As it turned out, I had an old usb bus manager in my non-packaged that was from before your fix to it. Removing it solved the issue.
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Unfortunately this one is odd: the usb stack allocates kernel mapped memory: https://git.haiku-os.org/haiku/tree/src/add-ons/kernel/bus_managers/usb/PhysicalMemoryAllocator.cpp#n79 The reason SMAP is triggered is that a page descriptor for the involved kernel page has the user flag set. Because it happens on boot, there can't really be a userland process involved (I think). Does it happen every time?
The bug would need to be reproduced and more data dumped (areas for instance).