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Groups > linux.kernel > #1318320 > unrolled thread
| Started by | Toralf Förster <toralf.foerster@gmx.de> |
|---|---|
| First post | 2016-01-26 20:50 +0100 |
| Last post | 2016-01-26 22:40 +0100 |
| Articles | 2 — 2 participants |
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UBSAN: Undefined behaviour in net/ipv4/fib_trie.c:1397:22 and UBSAN: Undefined behaviour in ./arch/x86/include/asm/atomic.h:156:2 Toralf Förster <toralf.foerster@gmx.de> - 2016-01-26 20:50 +0100
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 Eric Dumazet <eric.dumazet@gmail.com> - 2016-01-26 22:40 +0100
| From | Toralf Förster <toralf.foerster@gmx.de> |
|---|---|
| Date | 2016-01-26 20:50 +0100 |
| Subject | UBSAN: Undefined behaviour in net/ipv4/fib_trie.c:1397:22 and UBSAN: Undefined behaviour in ./arch/x86/include/asm/atomic.h:156:2 |
| Message-ID | <qVhMK-qV-9@gated-at.bofh.it> |
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at a 32 nbit KVM image of a Gentoo Linux runniogn v4.5-rc1 - attached is /var/log/messages -- Toralf, pgp: C4EACDDE 0076E94E
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| From | Eric Dumazet <eric.dumazet@gmail.com> |
|---|---|
| Date | 2016-01-26 22:40 +0100 |
| 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 |
| Message-ID | <qVjvc-1Q5-7@gated-at.bofh.it> |
| In reply to | #1318320 |
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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