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Bug #12246
closed
pci_get_irq_routing_table() leaks under UEFI
Start date:
Due date:
% Done:
100%
Estimated time:
Difficulty:
Bite-size
Tags:
Gerrit CR:
Description
Under a UEFI environment, pci_bios_get_irq_routing() returns 0 and also sets *nneededp to 0; this causes a small leak in pci_get_irq_routing_table().
kmem_alloc_512 leak: 1 buffer, 512 bytes
ADDR BUFADDR TIMESTAMP THREAD
CACHE LASTLOG CONTENTS
ffffff0708721018 ffffff0708706b80 0 fffffffffbc53040
ffffff06e1038648 ffffff06e6017a00 0
kmem_cache_alloc_debug+0x2fc
kmem_cache_alloc+0x25b
kmem_zalloc+0x47
pci_get_irq_routing_table+0x27
startup_pci_bios+9
startup+0x4a
main+0x96
_locore_start+0x90
Updated by Andy Fiddaman over 2 years ago
Review at: https://illumos.org/rb/r/2496/
Testing¶
UEFI¶
bloody% tr '\0' '\n' < /system/boot/environment | grep efi
efi-version=2.70
bloody% pfexec mdb -ke pci_irq_nroutes/X
pci_irq_nroutes:
pci_irq_nroutes:0
bloody% pfexec reboot -d
...
bloody# mdb -ke ::findleaks {unix,vmcore}.7
findleaks: no memory leaks detected
BIOS¶
bloody% tr '\0' '\n' < /system/boot/environment | grep efi
bloody% pfexec mdb -ke pci_irq_nroutes/X
pci_irq_nroutes:
pci_irq_nroutes:20
bloody% pfexec reboot -d
...
bloody# mdb -ke ::findleaks {unix,vmcore}.8
findleaks: no memory leaks detected
Updated by Electric Monk over 2 years ago
- Status changed from In Progress to Closed
- % Done changed from 0 to 100
git commit d851c23803d14c57f342f6cca648ec3bfb5ea9d1
commit d851c23803d14c57f342f6cca648ec3bfb5ea9d1
Author: Andy Fiddaman <omnios@citrus-it.co.uk>
Date: 2020-01-24T23:49:13.000Z
12246 pci_get_irq_routing_table() leaks under UEFI
Reviewed by: Dan McDonald <danmcd@joyent.com>
Reviewed by: Matthias Scheler <mscheler@tintri.com>
Reviewed by: Toomas Soome <tsoome@me.com>
Approved by: Gordon Ross <gordon.w.ross@gmail.com>
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