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  • kernel BUG at lib/list_debug.c:51!

    Posted on

    Description: Kernel crashes under under heavy load from application. Once application pods are deployed and begin I/O on CephFS-backed PVCs the kernel Ceph client is stressed and hits this issue on the current kernel version

    kernel crash with the following log:

    [22804.148350] list_del corruption. prev->next should be ffff8975aa023438, but was ffff896fce4cefe8

    [22804.151071] ------------[ cut here ]------------

    [22804.151075] kernel BUG at lib/list_debug.c:51!

    [22804.153355] invalid opcode: 0000 [#1] PREEMPT SMP PTI

    [22804.155567] CPU: 6 PID: 37577 Comm: 10_dirty_io_sch Kdump: loaded Not tainted 5.14.0-284.59.1.el9_2.x86_64 #1

    [22804.157309] Hardware name: VMware, Inc. VMware7,1/440BX Desktop Reference Platform, BIOS VMW71.00V.21100432.B64.2301110304 01/11/2023

    [22804.159243] RIP: 0010:__list_del_entry_valid.cold+0x31/0x47

    Kernel version: 5.14.0-284.59.1.el9_2.x86_64

    Additional Info:

    According to Red Hat Solution 7050813, this issue is currently unresolved.
    [+] https://access.redhat.com/solutions/7050813

    Interestingly, the Red Hat article mentions this affecting kernel-5.14.0-362.13.1.el9_3.x86_64, while I am running an earlier version (5.14.0-284.59.1.el9_2.x86_64).

    Question:
    Would changing the kernel version help mitigate or resolve this issue?

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