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[Qemu-devel] [Bug 1837094] [NEW] UndefinedBehaviorSanitizer crash around
From: |
Philippe Mathieu-Daudé |
Subject: |
[Qemu-devel] [Bug 1837094] [NEW] UndefinedBehaviorSanitizer crash around slirp::ip_reass() |
Date: |
Thu, 18 Jul 2019 17:47:39 -0000 |
Public bug reported:
tag: v4.1.0-rc1
./configure --enable-sanitizers --extra-cflags=-O1
==26130==ERROR: UndefinedBehaviorSanitizer: SEGV on unknown address
0x000000000008 (pc 0x00000046d588 bp 0x7fff6ee9f940 sp 0x7fff6ee9f8e8 T26130)
==26130==The signal is caused by a WRITE memory access.
==26130==Hint: address points to the zero page.
#0 0x0000561ad346d587 in ip_deq() at slirp/src/ip_input.c:411:55
#1 0x0000561ad346cffb in ip_reass() at slirp/src/ip_input.c:304:9
#2 0x0000561ad346cb6f in ip_input() at slirp/src/ip_input.c:184:18
I only had access to the last packet which isn't the culprit, I'm now
seeing how to log the network traffic of the guest to provide more
useful information.
** Affects: qemu
Importance: Undecided
Status: New
** Tags: slirp
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https://bugs.launchpad.net/bugs/1837094
Title:
UndefinedBehaviorSanitizer crash around slirp::ip_reass()
Status in QEMU:
New
Bug description:
tag: v4.1.0-rc1
./configure --enable-sanitizers --extra-cflags=-O1
==26130==ERROR: UndefinedBehaviorSanitizer: SEGV on unknown address
0x000000000008 (pc 0x00000046d588 bp 0x7fff6ee9f940 sp 0x7fff6ee9f8e8 T26130)
==26130==The signal is caused by a WRITE memory access.
==26130==Hint: address points to the zero page.
#0 0x0000561ad346d587 in ip_deq() at slirp/src/ip_input.c:411:55
#1 0x0000561ad346cffb in ip_reass() at slirp/src/ip_input.c:304:9
#2 0x0000561ad346cb6f in ip_input() at slirp/src/ip_input.c:184:18
I only had access to the last packet which isn't the culprit, I'm now
seeing how to log the network traffic of the guest to provide more
useful information.
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- [Qemu-devel] [Bug 1837094] [NEW] UndefinedBehaviorSanitizer crash around slirp::ip_reass(),
Philippe Mathieu-Daudé <=