The kernel crashed due to PF that happened with an instruction fetch

Solution Unverified - Updated -

Issue

  • The kernel crashed due to PF that happened with an instruction fetch
[401311.286626] BUG: unable to handle kernel paging request at ffffffff8a6ee33a
[401311.286819] PGD 6a20213067 P4D 6a20213067 PUD 6a20214063 PMD 0 
[401311.286970] Oops: 0010 [#1] SMP PTI
[401311.287056] CPU: 5 PID: 4167046 Comm: pybin Kdump: loaded Tainted: P          I E    --------- -  - 4.18.0-425.13.1.el8_7.x86_64 #1
[401311.287237] Hardware name: Dell Inc. PowerEdge R740xd/0YWR7D, BIOS 2.16.1 08/17/2022
[401311.287332] RIP: 0010:0xffffffff8a6ee33a
[401311.287429] Code: Unable to access opcode bytes at RIP 0xffffffff8a6ee310.
[401311.287527] RSP: 0018:ffffb3e3f81d7cd0 EFLAGS: 00010206
[401311.287624] RAX: ffff9d45f88a0850 RBX: ffffd3e3bfffffff RCX: ffff9d0e8d64b750
[401311.287725] RDX: ffffb3e3f0cfd000 RSI: ffff9cf93f738390 RDI: ffffb3e3f0bf1000
[401311.287829] RBP: 0000000000005000 R08: ffffb3e3f0bf1001 R09: ffffb3e3f0b34000
[401311.287935] R10: ffffb3e3f0bf9000 R11: 0000000000000001 R12: 0000000000003fff
[401311.288046] R13: ffffffffffffc000 R14: ffff9d0280c17bc0 R15: ffff9d0280c17a80
[401311.288156] FS:  00007fdd7c9dcf00(0000) GS:ffff9d555f880000(0000) knlGS:0000000000000000
[401311.288278] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[401311.288398] CR2: ffffffff8a6ee310 CR3: 000000801ebd8003 CR4: 00000000007706e0
[401311.288525] PKRU: 55555554
[401311.288647] Call Trace:
[401311.288771]  ? kmem_cache_alloc_node_trace+0x164/0x2b0
[401311.288900]  ? __get_vm_area_node+0xad/0x160
[401311.289031]  ? __get_vm_area_node+0xe2/0x160
[401311.289160]  ? __vmalloc_node_range+0x6c/0x230
[401311.289293]  ? _do_fork+0x8b/0x340
[401311.289427]  ? copy_process+0x8de/0x1bb0
[401311.289564]  ? _do_fork+0x8b/0x340
[401311.289695]  ? trace_call_bpf+0x7a/0xe0
[401311.289833]  ? _do_fork+0x8b/0x340
[401311.289969]  ? do_syscall_64+0x5b/0x1b0
[401311.290108]  ? entry_SYSCALL_64_after_hwframe+0x61/0xc6
[401311.290250] Modules linked in: [...]
[401311.290316] 
[401311.291765] Red Hat flags: eBPF/event
[401311.291933] CR2: ffffffff8a6ee33a

Environment

  • Red Hat Enterprise Linux 8.7.z - kernel-4.18.0-425.13.1.el8_7
  • Dell PowerEdge R740xd
  • Intel(R) Xeon(R) Gold 6126 CPU @ 2.60GHz
  • microcode = 0x2006e05

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