Messages in this thread |  | | Subject | Re: WARNING: suspicious RCU usage in fib6_info_alloc | From | Eric Dumazet <> | Date | Wed, 18 Apr 2018 14:16:56 -0700 |
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On 04/18/2018 02:04 PM, David Ahern wrote: > On 4/18/18 3:02 PM, syzbot wrote: >> stack backtrace: >> CPU: 1 PID: 25 Comm: kworker/1:1 Not tainted 4.16.0+ #5 >> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS >> Google 01/01/2011 >> Workqueue: ipv6_addrconf addrconf_dad_work >> Call Trace: >> __dump_stack lib/dump_stack.c:77 [inline] >> dump_stack+0x1b9/0x294 lib/dump_stack.c:113 >> lockdep_rcu_suspicious+0x14a/0x153 kernel/locking/lockdep.c:4592 >> ___might_sleep+0x2e7/0x320 kernel/sched/core.c:6153 >> __might_sleep+0x95/0x190 kernel/sched/core.c:6141 >> slab_pre_alloc_hook mm/slab.h:421 [inline] >> slab_alloc mm/slab.c:3378 [inline] >> kmem_cache_alloc_trace+0x2bc/0x780 mm/slab.c:3618 >> kmalloc include/linux/slab.h:512 [inline] >> kzalloc include/linux/slab.h:701 [inline] >> fib6_info_alloc+0xbb/0x280 net/ipv6/ip6_fib.c:152 >> ip6_route_info_create+0x7bf/0x3240 net/ipv6/route.c:2891 >> ip6_route_add+0x23/0xb0 net/ipv6/route.c:3030 >> addrconf_prefix_route.isra.47+0x4f7/0x6f0 net/ipv6/addrconf.c:2347 >> __ipv6_ifa_notify+0x591/0xa00 net/ipv6/addrconf.c:5620 > > Eric is faster than the robot ;-)
Not really ;)
> > Patch is queued up; will send later today. >
David, I simply looked at the report before allowing the bot to send it ;)
I determined the bug was added recently, and warned you about it.
Thanks !
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