Linux OS: kernel WARNING at net/ipv4/tcp_input.c:2225 tcp_mark_head_lost+0x226/0x230()

(Doc ID 2349713.1)

Last updated on FEBRUARY 09, 2018

Applies to:

Linux OS - Version Oracle Linux 7.3 with Unbreakable Enterprise Kerne [4.1.12] and later
Linux x86-64

Symptoms

When running Unbreakable Enterprise Kernel [4.1.12] version older than 4.1.12-112.1.0.el7uek, kernel warnings are found like the ones below, with reference to code file: "net/ipv4/tcp_input.c:2225 tcp_mark_head_lost+0x226/0x230()"

kernel: WARNING: CPU: 45 PID: 39268 at net/ipv4/tcp_input.c:2225 tcp_mark_head_lost+0x226/0x230()
kernel: scsi_transport_sas dca dm_mirror dm_region_hash dm_log dm_mod
kernel: CPU: 45 PID: 39268 Comm: java Tainted: G W 4.1.12-103.3.8.el7uek.x86_64 #2
kernel: Hardware name: Huawei CH121 V3/IT11SGCA1, BIOS 3.32 09/14/2016
kernel: 0000000000000286 000000005f97cc52 ffff88607eb437f8 ffffffff81736248

---SNIP---

kernel: Call Trace:
kernel: <IRQ> [<ffffffff81736248>] dump_stack+0x63/0x81
kernel: [<ffffffff810862aa>] warn_slowpath_common+0x8a/0xc0
kernel: [<ffffffff810863da>] warn_slowpath_null+0x1a/0x20
kernel: [<ffffffff8166be76>] tcp_mark_head_lost+0x226/0x230
kernel: [<ffffffff810220e9>] ? sched_clock+0x9/0x10

 

Changes

None

Cause

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