The kernel crashed due to a hard lockup caused by a highly possible single-bit flip on a signahd address.

Solution Unverified - Updated -

Issue

  • The kernel crashed due to a hard lockup caused by a highly possible single-bit flip on a signahd address.
    [30946.083475] Kernel panic - not syncing: Hard LOCKUP
    [30946.084115] CPU: 23 PID: 188378 Comm: java Kdump: loaded Tainted: G OE ------------ 3.10.0-957.48.1.el7.x86_64 #1
    [30946.085362] Hardware name: Cisco Systems Inc UCSC-C240-M5SX/UCSC-C240-M5SX, BIOS C240M5.4.1.1c.0.0405200025 04/05/2020
    [30946.085999] Call Trace:
    [30946.086613] <NMI> [<ffffffffb6f65ad0>] dump_stack+0x19/0x1b
    [30946.087235] [<ffffffffb6f5f8fd>] panic+0xe8/0x21f
    [30946.087853] [<ffffffffb6f78ddb>] ? system_call_fastpath+0x22/0x27
    [30946.088462] [<ffffffffb689882f>] nmi_panic+0x3f/0x40
    [30946.089073] [<ffffffffb694ab11>] watchdog_overflow_callback+0x121/0x140
    [30946.089683] [<ffffffffb69a2857>] __perf_event_overflow+0x57/0x100
    [30946.090294] [<ffffffffb69abfa4>] perf_event_overflow+0x14/0x20
    [30946.090894] [<ffffffffb680a850>] intel_pmu_handle_irq+0x220/0x510
    [30946.091479] [<ffffffffb6b7a088>] ? ioremap_page_range+0x2e8/0x480
    [30946.092060] [<ffffffffb69fd4c4>] ? vunmap_page_range+0x234/0x470
    [30946.092652] [<ffffffffb6c3fa86>] ? ghes_copy_tofrom_phys+0x116/0x210
    [30946.093227] [<ffffffffb6c3fc20>] ? ghes_read_estatus+0xa0/0x190
    [30946.093796] [<ffffffffb6f6f031>] perf_event_nmi_handler+0x31/0x50
    [30946.094376] [<ffffffffb6f7093c>] nmi_handle.isra.0+0x8c/0x150
    [30946.094945] [<ffffffffb6f70c18>] do_nmi+0x218/0x460
    [30946.095497] [<ffffffffb6f6fd9c>] end_repeat_nmi+0x1e/0x81
    [30946.096041] [<ffffffffb69137c2>] ? native_queued_spin_lock_slowpath+0x122/0x200
    [30946.096580] [<ffffffffb69137c2>] ? native_queued_spin_lock_slowpath+0x122/0x200
    [30946.097116] [<ffffffffb69137c2>] ? native_queued_spin_lock_slowpath+0x122/0x200
    [30946.097635] <EOE> [<ffffffffb6f60378>] queued_spin_lock_slowpath+0xb/0xf
    [30946.098165] [<ffffffffb6f6e078>] _raw_spin_lock_irq+0x28/0x30
    [30946.098689] [<ffffffffb68b0be0>] exit_signals+0xa0/0x160
    [30946.099217] [<ffffffffb689ef34>] do_exit+0xc4/0xa40
    [30946.099724] [<ffffffffb689f8e7>] SyS_exit+0x17/0x20
    [30946.100219] [<ffffffffb6f78ddb>] system_call_fastpath+0x22/0x27

Environment

  • Red Hat Enterprise Linux 7.6 (kernel-3.10.0-957.48.1.el7)

  • Cisco UCSC-C240-M5SX

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