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UEK4 - Kernel WARNING At Net/rds/recv.c:222 Rds_recv_hs_exthdrs+0xf8/0x1e0 [rds]() (Doc ID 2502748.1)

Last updated on MAY 15, 2020

Applies to:

Linux OS - Version Oracle Linux 6.10 with Unbreakable Enterprise Kernel [4.1.12] and later
Linux x86-64


 The following kernel warning messages are seen on an RAC cluster running Oracle Linux 6 and the UEK4 kernel logged to var/log/messages:

Kernel WARNING At Net/rds/recv.c:222 Rds_recv_hs_exthdrs+0xf8/0x1e0 [rds]()

An example message stack is as follows:

WARNING: CPU: 38 PID: 39050 at net/rds/recv.c:222
rds_recv_hs_exthdrs+0xf8/0x1e0 [rds]()
CPU: 38 PID: 39050 Comm: bdsqloflsrv Not tainted
4.1.12-124.14.1.el6uek.x86_64 #2
Hardware name: Oracle Corporation ORACLE SERVER X6-2L/ASM,MOBO TRAY,2U, BIOS
39100300 02/07/2018
0000000000000000 ffff88befdc03bb8 ffffffff816e4505 0000000000000000
ffffffffa04a8dc6 ffff88befdc03bf8 ffffffff8108481a ffff88befdc03be8
0000000000000000 0000000000000000 ffff88bd441c6048 ffff885eae649a90
Call Trace:
<IRQ> [<ffffffff816e4505>] dump_stack+0x63/0x81
[<ffffffff8108481a>] warn_slowpath_common+0x8a/0xc0
[<ffffffff8108490a>] warn_slowpath_null+0x1a/0x20
[<ffffffffa04a01c8>] rds_recv_hs_exthdrs+0xf8/0x1e0 [rds]
[<ffffffffa04a08c6>] rds_recv_local.isra.7+0x396/0x440 [rds]
[<ffffffffa04a0f48>] rds_recv_incoming+0x2d8/0x3c0 [rds]
[<ffffffffa052fbef>] rds_ib_recv_cqe_handler+0x44f/0x6d0 [rds_rdma]
[<ffffffffa0529e4a>] poll_rcq+0x7a/0xa0 [rds_rdma]
[<ffffffffa0529f14>] rds_ib_rx+0xa4/0x220 [rds_rdma]
[<ffffffffa052a0c0>] rds_ib_tasklet_fn_recv+0x30/0x40 [rds_rdma]
[<ffffffff81088aa0>] tasklet_action+0x130/0x140
[<ffffffff81088f00>] __do_softirq+0x120/0x300
[<ffffffff81089305>] irq_exit+0x125/0x130
[<ffffffff816f3e98>] do_IRQ+0x58/0xf0
[<ffffffff816edb12>] common_interrupt+0x192/0x192
---[ end trace 270bebe6a7b7ac09 ]--


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