Bug 198271
| Summary: | BUG warnings in dmesg log - avahi-daemon | ||
|---|---|---|---|
| Product: | Networking | Reporter: | Chris Rankin (rankincj) |
| Component: | IPV6 | Assignee: | Hideaki YOSHIFUJI (yoshfuji) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | normal | CC: | alexander, makovick |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 4.14.9 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
dmesg output containing multiple BUG warnings.
dmesg with commit 9704f81 reverted Patch to suppress the warnings |
||
On 26 December 2017 at 06:21, Willy Tarreau <w@1wt.eu> wrote: > Hi Chris, > > On Tue, Dec 26, 2017 at 01:49:59AM +0000, Chris Rankin wrote: > (...) >> [ 35.100181] Call Trace: >> [ 35.102709] dump_stack+0x46/0x59 >> [ 35.106095] check_preemption_disabled+0xca/0xda >> [ 35.110786] ip6_pol_route+0x46b/0x509 [ipv6] > (...) > > One patch touched this area between 4.14.8 and 4.14.9, you may try > to revert it to see if it fixes the issue : > > 9704f81 ("ipv6: grab rt->rt6i_ref before allocating pcpu rt") Reverting this patch seems to have fixed the problem. Created attachment 273315 [details]
dmesg with commit 9704f81 reverted
Created attachment 273319 [details]
Patch to suppress the warnings
This patch avoids the warnings, although I am not sure if it does not just sweep an actual bug under the rug.
Problem fixed by reverting commit #9704f81. |
Created attachment 273309 [details] dmesg output containing multiple BUG warnings. Just booted 4.14.9 and seen lots of BUG warnings in the log. The dmesg output is attached. It looks like avahi-daemon is doing strange things with IPv6, possibly related to netfilter.