Messages in this thread | | | Subject | Re: UBSAN: Undefined behaviour in net/ipv4/fib_trie.c:1397:22 and UBSAN: Undefined behaviour in ./arch/x86/include/asm/atomic.h:156:2 | From | Eric Dumazet <> | Date | Tue, 26 Jan 2016 13:36:18 -0800 |
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On Tue, 2016-01-26 at 20:45 +0100, Toralf Förster wrote: > at a 32 nbit KVM image of a Gentoo Linux runniogn v4.5-rc1 - attached is /var/log/messages >
Jan 26 20:40:04 n22kvm-clone kernel: ================================================================================ Jan 26 20:40:04 n22kvm-clone kernel: UBSAN: Undefined behaviour in net/ipv4/fib_trie.c:1397:22 Jan 26 20:40:04 n22kvm-clone kernel: shift exponent 32 is too large for 32-bit type 'long unsigned int' Jan 26 20:40:04 n22kvm-clone kernel: CPU: 1 PID: 2050 Comm: dhcpcd Not tainted 4.5.0-rc1 #1 Jan 26 20:40:04 n22kvm-clone kernel: Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.2-0-g33fbe13 by qemu-project.org 04/01/2014
Thanks for the report.
CC netdev and Alexander
Commit 79e5ad2ceb006 ("fib_trie: Remove leaf_info ")
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