igt@kms_vblank@pipe-c-wait-forked-hang|igt@kms_flip_event_leak - Incomplete - Pstore logs, Kernel panic - not syncing: EXT4-fs (device nvme0n1p2): panic forced after error

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_10482/shard-tglb7/igt@kms_vblank@pipe-c-wait-forked-hang.html https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_10482/shard-tglb7/pstore0-1517155374_Panic_1.txt

<4>[  281.334051] nvme nvme0: controller is down; will reset: CSTS=0xffffffff, PCI_STATUS=0xffff
<3>[  281.359850] nvme 0000:01:00.0: can't change power state from D3cold to D0 (config space inaccessible)
<4>[  281.367481] nvme nvme0: Removing after probe failure status: -19
<6>[  281.378157] nvme0n1: detected capacity change from 500118192 to 0
<4>[  281.378184] EXT4-fs warning (device nvme0n1p2): ext4_end_bio:346: I/O error 10 writing to inode 918099 starting block 37446456)
<3>[  281.378322] blk_update_request: I/O error, dev nvme0n1, sector 340789256 op 0x1:(WRITE) flags 0x103000 phys_seg 1 prio class 0
<3>[  281.378798] Buffer I/O error on device nvme0n1p2, logical block 37315127
<3>[  281.380104] Aborting journal on device nvme0n1p2-8.
<2>[  281.380339] EXT4-fs error (device nvme0n1p2): ext4_journal_check_start:83: comm rs:main Q:Reg: Detected aborted journal
<3>[  281.380829] Buffer I/O error on dev nvme0n1p2, logical block 30965760, lost sync page write
<2>[  281.382182] EXT4-fs error (device nvme0n1p2) in ext4_writepages:2813: Journal has aborted
<2>[  281.382920] EXT4-fs error (device nvme0n1p2): ext4_journal_check_start:83: comm igt_runner: Detected aborted journal
<3>[  281.383884] JBD2: Error -5 detected when updating journal superblock for nvme0n1p2-8.
<3>[  281.385402] Buffer I/O error on dev nvme0n1p2, logical block 0, lost sync page write
<3>[  281.385955] EXT4-fs (nvme0n1p2): previous I/O error to superblock detected
<3>[  281.386077] EXT4-fs (nvme0n1p2): I/O error while writing superblock
<3>[  281.386174] Buffer I/O error on dev nvme0n1p2, logical block 0, lost sync page write
<0>[  281.386211] Kernel panic - not syncing: EXT4-fs (device nvme0n1p2): panic forced after error
<3>[  281.386275] EXT4-fs (nvme0n1p2): I/O error while writing superblock
<0>[  281.386397] Kernel Offset: disabled
<4>[  281.386403] CPU: 2 PID: 1191 Comm: kworker/u16:36 Tainted: G     U            5.14.0-rc5-CI-CI_DRM_10482+ #1
<4>[  281.386405] Hardware name: Intel Corporation Tiger Lake Client Platform/TigerLake U DDR4 SODIMM RVP, BIOS TGLSFWI1.R00.3197.A00.2005110542 05/11/2020
<4>[  281.386408] Workqueue: writeback wb_workfn (flush-259:0)
<4>[  281.386417] Call Trace:
<4>[  281.386420]  dump_stack_lvl+0x56/0x7b
<4>[  281.386426]  panic+0x13d/0x2db
<4>[  281.386436]  ext4_handle_error.cold.156+0x13/0x13
<4>[  281.386443]  __ext4_std_error+0x7e/0xe0
<4>[  281.386451]  __ext4_journal_stop+0x73/0xa0
<4>[  281.386456]  ext4_writepages+0x81f/0x1120
<4>[  281.386462]  ? validate_chain+0x234/0x1e70
<4>[  281.386476]  ? do_writepages+0x39/0xe0
<4>[  281.386482]  do_writepages+0x39/0xe0
<4>[  281.386488]  __writeback_single_inode+0x53/0x5b0
<4>[  281.386492]  writeback_sb_inodes+0x1fb/0x500
<4>[  281.386502]  __writeback_inodes_wb+0x5a/0xc0
<4>[  281.386506]  wb_writeback+0x2f8/0x470
<4>[  281.386514]  wb_workfn+0x41f/0x680
<4>[  281.386523]  process_one_work+0x26d/0x5c0
<4>[  281.386532]  worker_thread+0x37/0x390
<4>[  281.386535]  ? process_one_work+0x5c0/0x5c0
<4>[  281.386537]  kthread+0x13b/0x170
<4>[  281.386539]  ? set_kthread_struct+0x40/0x40
<4>[  281.386543]  ret_from_fork+0x1f/0x30