* [BUG] atm: idt77252: Found a bug when removing the module
@ 2022-05-21 11:48 Zheyu Ma
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From: Zheyu Ma @ 2022-05-21 11:48 UTC (permalink / raw)
To: 3chas3; +Cc: linux-atm-general, netdev, Linux Kernel Mailing List
Hello,
I found a bug in the driver idt77252, when removing the module, I got
the following flaw:
[ 14.576507] BUG: KASAN: use-after-free in
idt77252_interrupt+0xfde/0x13c0 [idt77252]
[ 14.576980] Read of size 8 at addr ffff88800a428008 by task modprobe/292
[ 14.578516] Call Trace:
[ 14.580577] idt77252_interrupt+0xfde/0x13c0 [idt77252]
The bug occurs in line 2770, I guess that the reason is that the
driver free the irq too late.
Zheyu Ma
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2022-05-21 11:48 [BUG] atm: idt77252: Found a bug when removing the module Zheyu Ma
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